kopia lustrzana https://github.com/noDRM/DeDRM_tools
1813 wiersze
76 KiB
Python
1813 wiersze
76 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import with_statement
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# kindlekey.py
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# Copyright © 2008-2020 Apprentice Harper et al.
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__license__ = 'GPL v3'
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__version__ = '2.8'
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# Revision history:
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# 1.0 - Kindle info file decryption, extracted from k4mobidedrm, etc.
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# 1.1 - Added Tkinter to match adobekey.py
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# 1.2 - Fixed testing of successful retrieval on Mac
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# 1.3 - Added getkey interface for Windows DeDRM application
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# Simplified some of the Kindle for Mac code.
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# 1.4 - Remove dependency on alfcrypto
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# 1.5 - moved unicode_argv call inside main for Windows DeDRM compatibility
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# 1.6 - Fixed a problem getting the disk serial numbers
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# 1.7 - Work if TkInter is missing
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# 1.8 - Fixes for Kindle for Mac, and non-ascii in Windows user names
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# 1.9 - Fixes for Unicode in Windows user names
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# 2.0 - Added comments and extra fix for non-ascii Windows user names
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# 2.1 - Fixed Kindle for PC encryption changes March 2016
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# 2.2 - Fixes for Macs with bonded ethernet ports
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# Also removed old .kinfo file support (pre-2011)
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# 2.3 - Added more field names thanks to concavegit's KFX code.
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# 2.4 - Fix for complex Mac disk setups, thanks to Tibs
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# 2.5 - Final Fix for Windows user names with non-ascii characters, thanks to oneofusoneofus
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# 2.6 - Start adding support for Kindle 1.25+ .kinf2018 file
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# 2.7 - Finish .kinf2018 support, PC & Mac by Apprentice Sakuya
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# 2.8 - Fix for Mac OS X Big Sur
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"""
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Retrieve Kindle for PC/Mac user key.
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"""
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import sys, os, re
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from struct import pack, unpack
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import json
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import getopt
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try:
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RegError
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except NameError:
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class RegError(Exception):
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pass
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# Routines common to Mac and PC
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# Wrap a stream so that output gets flushed immediately
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# and also make sure that any unicode strings get
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# encoded using "replace" before writing them.
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class SafeUnbuffered:
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def __init__(self, stream):
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self.stream = stream
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self.encoding = stream.encoding
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if self.encoding == None:
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self.encoding = "utf-8"
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def write(self, data):
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if isinstance(data,unicode):
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data = data.encode(self.encoding,"replace")
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self.stream.write(data)
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self.stream.flush()
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def __getattr__(self, attr):
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return getattr(self.stream, attr)
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try:
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from calibre.constants import iswindows, isosx
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except:
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iswindows = sys.platform.startswith('win')
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isosx = sys.platform.startswith('darwin')
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def unicode_argv():
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if iswindows:
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# Uses shell32.GetCommandLineArgvW to get sys.argv as a list of Unicode
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# strings.
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# Versions 2.x of Python don't support Unicode in sys.argv on
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# Windows, with the underlying Windows API instead replacing multi-byte
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# characters with '?'. So use shell32.GetCommandLineArgvW to get sys.argv
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# as a list of Unicode strings and encode them as utf-8
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from ctypes import POINTER, byref, cdll, c_int, windll
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from ctypes.wintypes import LPCWSTR, LPWSTR
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GetCommandLineW = cdll.kernel32.GetCommandLineW
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GetCommandLineW.argtypes = []
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GetCommandLineW.restype = LPCWSTR
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CommandLineToArgvW = windll.shell32.CommandLineToArgvW
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CommandLineToArgvW.argtypes = [LPCWSTR, POINTER(c_int)]
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CommandLineToArgvW.restype = POINTER(LPWSTR)
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cmd = GetCommandLineW()
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argc = c_int(0)
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argv = CommandLineToArgvW(cmd, byref(argc))
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if argc.value > 0:
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# Remove Python executable and commands if present
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start = argc.value - len(sys.argv)
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return [argv[i] for i in
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xrange(start, argc.value)]
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# if we don't have any arguments at all, just pass back script name
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# this should never happen
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return [u"kindlekey.py"]
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else:
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argvencoding = sys.stdin.encoding
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if argvencoding == None:
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argvencoding = "utf-8"
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return [arg if (type(arg) == unicode) else unicode(arg,argvencoding) for arg in sys.argv]
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class DrmException(Exception):
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pass
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# crypto digestroutines
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import hashlib
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def MD5(message):
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ctx = hashlib.md5()
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ctx.update(message)
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return ctx.digest()
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def SHA1(message):
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ctx = hashlib.sha1()
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ctx.update(message)
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return ctx.digest()
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def SHA256(message):
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ctx = hashlib.sha256()
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ctx.update(message)
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return ctx.digest()
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# For K4M/PC 1.6.X and later
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def primes(n):
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"""
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Return a list of prime integers smaller than or equal to n
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:param n: int
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:return: list->int
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"""
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if n == 2:
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return [2]
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elif n < 2:
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return []
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primeList = [2]
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for potentialPrime in range(3, n + 1, 2):
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isItPrime = True
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for prime in primeList:
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if potentialPrime % prime == 0:
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isItPrime = False
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if isItPrime is True:
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primeList.append(potentialPrime)
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return primeList
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# Encode the bytes in data with the characters in map
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def encode(data, map):
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result = ''
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for char in data:
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value = ord(char)
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Q = (value ^ 0x80) // len(map)
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R = value % len(map)
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result += map[Q]
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result += map[R]
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return result
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# Hash the bytes in data and then encode the digest with the characters in map
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def encodeHash(data,map):
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return encode(MD5(data),map)
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# Decode the string in data with the characters in map. Returns the decoded bytes
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def decode(data,map):
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result = ''
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for i in range (0,len(data)-1,2):
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high = map.find(data[i])
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low = map.find(data[i+1])
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if (high == -1) or (low == -1) :
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break
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value = (((high * len(map)) ^ 0x80) & 0xFF) + low
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result += pack('B',value)
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return result
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# Routines unique to Mac and PC
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if iswindows:
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from ctypes import windll, c_char_p, c_wchar_p, c_uint, POINTER, byref, \
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create_unicode_buffer, create_string_buffer, CFUNCTYPE, addressof, \
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string_at, Structure, c_void_p, cast
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import _winreg as winreg
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MAX_PATH = 255
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kernel32 = windll.kernel32
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advapi32 = windll.advapi32
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crypt32 = windll.crypt32
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try:
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# try to get fast routines from alfcrypto
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from alfcrypto import AES_CBC, KeyIVGen
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except:
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# alfcrypto not available, so use python implementations
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"""
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Routines for doing AES CBC in one file
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Modified by some_updates to extract
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and combine only those parts needed for AES CBC
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into one simple to add python file
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Original Version
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Copyright (c) 2002 by Paul A. Lambert
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Under:
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CryptoPy Artistic License Version 1.0
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See the wonderful pure python package cryptopy-1.2.5
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and read its LICENSE.txt for complete license details.
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"""
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class CryptoError(Exception):
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""" Base class for crypto exceptions """
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def __init__(self,errorMessage='Error!'):
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self.message = errorMessage
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def __str__(self):
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return self.message
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class InitCryptoError(CryptoError):
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""" Crypto errors during algorithm initialization """
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class BadKeySizeError(InitCryptoError):
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""" Bad key size error """
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class EncryptError(CryptoError):
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""" Error in encryption processing """
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class DecryptError(CryptoError):
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""" Error in decryption processing """
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class DecryptNotBlockAlignedError(DecryptError):
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""" Error in decryption processing """
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def xorS(a,b):
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""" XOR two strings """
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assert len(a)==len(b)
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x = []
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for i in range(len(a)):
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x.append( chr(ord(a[i])^ord(b[i])))
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return ''.join(x)
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def xor(a,b):
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""" XOR two strings """
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x = []
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for i in range(min(len(a),len(b))):
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x.append( chr(ord(a[i])^ord(b[i])))
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return ''.join(x)
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"""
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Base 'BlockCipher' and Pad classes for cipher instances.
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BlockCipher supports automatic padding and type conversion. The BlockCipher
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class was written to make the actual algorithm code more readable and
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not for performance.
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"""
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class BlockCipher:
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""" Block ciphers """
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def __init__(self):
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self.reset()
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def reset(self):
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self.resetEncrypt()
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self.resetDecrypt()
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def resetEncrypt(self):
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self.encryptBlockCount = 0
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self.bytesToEncrypt = ''
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def resetDecrypt(self):
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self.decryptBlockCount = 0
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self.bytesToDecrypt = ''
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def encrypt(self, plainText, more = None):
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""" Encrypt a string and return a binary string """
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self.bytesToEncrypt += plainText # append plainText to any bytes from prior encrypt
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numBlocks, numExtraBytes = divmod(len(self.bytesToEncrypt), self.blockSize)
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cipherText = ''
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for i in range(numBlocks):
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bStart = i*self.blockSize
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ctBlock = self.encryptBlock(self.bytesToEncrypt[bStart:bStart+self.blockSize])
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self.encryptBlockCount += 1
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cipherText += ctBlock
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if numExtraBytes > 0: # save any bytes that are not block aligned
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self.bytesToEncrypt = self.bytesToEncrypt[-numExtraBytes:]
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else:
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self.bytesToEncrypt = ''
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if more == None: # no more data expected from caller
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finalBytes = self.padding.addPad(self.bytesToEncrypt,self.blockSize)
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if len(finalBytes) > 0:
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ctBlock = self.encryptBlock(finalBytes)
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self.encryptBlockCount += 1
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cipherText += ctBlock
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self.resetEncrypt()
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return cipherText
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def decrypt(self, cipherText, more = None):
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""" Decrypt a string and return a string """
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self.bytesToDecrypt += cipherText # append to any bytes from prior decrypt
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numBlocks, numExtraBytes = divmod(len(self.bytesToDecrypt), self.blockSize)
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if more == None: # no more calls to decrypt, should have all the data
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if numExtraBytes != 0:
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raise DecryptNotBlockAlignedError, 'Data not block aligned on decrypt'
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# hold back some bytes in case last decrypt has zero len
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if (more != None) and (numExtraBytes == 0) and (numBlocks >0) :
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numBlocks -= 1
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numExtraBytes = self.blockSize
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plainText = ''
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for i in range(numBlocks):
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bStart = i*self.blockSize
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ptBlock = self.decryptBlock(self.bytesToDecrypt[bStart : bStart+self.blockSize])
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self.decryptBlockCount += 1
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plainText += ptBlock
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if numExtraBytes > 0: # save any bytes that are not block aligned
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self.bytesToEncrypt = self.bytesToEncrypt[-numExtraBytes:]
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else:
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self.bytesToEncrypt = ''
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if more == None: # last decrypt remove padding
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plainText = self.padding.removePad(plainText, self.blockSize)
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self.resetDecrypt()
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return plainText
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class Pad:
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def __init__(self):
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pass # eventually could put in calculation of min and max size extension
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class padWithPadLen(Pad):
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""" Pad a binary string with the length of the padding """
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def addPad(self, extraBytes, blockSize):
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""" Add padding to a binary string to make it an even multiple
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of the block size """
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blocks, numExtraBytes = divmod(len(extraBytes), blockSize)
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padLength = blockSize - numExtraBytes
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return extraBytes + padLength*chr(padLength)
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def removePad(self, paddedBinaryString, blockSize):
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""" Remove padding from a binary string """
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if not(0<len(paddedBinaryString)):
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raise DecryptNotBlockAlignedError, 'Expected More Data'
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return paddedBinaryString[:-ord(paddedBinaryString[-1])]
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class noPadding(Pad):
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""" No padding. Use this to get ECB behavior from encrypt/decrypt """
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def addPad(self, extraBytes, blockSize):
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""" Add no padding """
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return extraBytes
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def removePad(self, paddedBinaryString, blockSize):
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""" Remove no padding """
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return paddedBinaryString
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"""
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Rijndael encryption algorithm
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This byte oriented implementation is intended to closely
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match FIPS specification for readability. It is not implemented
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for performance.
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"""
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class Rijndael(BlockCipher):
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""" Rijndael encryption algorithm """
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def __init__(self, key = None, padding = padWithPadLen(), keySize=16, blockSize=16 ):
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self.name = 'RIJNDAEL'
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self.keySize = keySize
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self.strength = keySize*8
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self.blockSize = blockSize # blockSize is in bytes
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self.padding = padding # change default to noPadding() to get normal ECB behavior
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assert( keySize%4==0 and NrTable[4].has_key(keySize/4)),'key size must be 16,20,24,29 or 32 bytes'
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assert( blockSize%4==0 and NrTable.has_key(blockSize/4)), 'block size must be 16,20,24,29 or 32 bytes'
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self.Nb = self.blockSize/4 # Nb is number of columns of 32 bit words
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self.Nk = keySize/4 # Nk is the key length in 32-bit words
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self.Nr = NrTable[self.Nb][self.Nk] # The number of rounds (Nr) is a function of
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# the block (Nb) and key (Nk) sizes.
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if key != None:
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self.setKey(key)
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def setKey(self, key):
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""" Set a key and generate the expanded key """
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assert( len(key) == (self.Nk*4) ), 'Key length must be same as keySize parameter'
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self.__expandedKey = keyExpansion(self, key)
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self.reset() # BlockCipher.reset()
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def encryptBlock(self, plainTextBlock):
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""" Encrypt a block, plainTextBlock must be a array of bytes [Nb by 4] """
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self.state = self._toBlock(plainTextBlock)
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AddRoundKey(self, self.__expandedKey[0:self.Nb])
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for round in range(1,self.Nr): #for round = 1 step 1 to Nr
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SubBytes(self)
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ShiftRows(self)
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MixColumns(self)
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AddRoundKey(self, self.__expandedKey[round*self.Nb:(round+1)*self.Nb])
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SubBytes(self)
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ShiftRows(self)
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AddRoundKey(self, self.__expandedKey[self.Nr*self.Nb:(self.Nr+1)*self.Nb])
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return self._toBString(self.state)
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def decryptBlock(self, encryptedBlock):
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""" decrypt a block (array of bytes) """
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self.state = self._toBlock(encryptedBlock)
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AddRoundKey(self, self.__expandedKey[self.Nr*self.Nb:(self.Nr+1)*self.Nb])
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for round in range(self.Nr-1,0,-1):
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InvShiftRows(self)
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InvSubBytes(self)
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AddRoundKey(self, self.__expandedKey[round*self.Nb:(round+1)*self.Nb])
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InvMixColumns(self)
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InvShiftRows(self)
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InvSubBytes(self)
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AddRoundKey(self, self.__expandedKey[0:self.Nb])
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return self._toBString(self.state)
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def _toBlock(self, bs):
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""" Convert binary string to array of bytes, state[col][row]"""
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assert ( len(bs) == 4*self.Nb ), 'Rijndarl blocks must be of size blockSize'
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return [[ord(bs[4*i]),ord(bs[4*i+1]),ord(bs[4*i+2]),ord(bs[4*i+3])] for i in range(self.Nb)]
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def _toBString(self, block):
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""" Convert block (array of bytes) to binary string """
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l = []
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for col in block:
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for rowElement in col:
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l.append(chr(rowElement))
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return ''.join(l)
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#-------------------------------------
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""" Number of rounds Nr = NrTable[Nb][Nk]
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Nb Nk=4 Nk=5 Nk=6 Nk=7 Nk=8
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------------------------------------- """
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NrTable = {4: {4:10, 5:11, 6:12, 7:13, 8:14},
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5: {4:11, 5:11, 6:12, 7:13, 8:14},
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6: {4:12, 5:12, 6:12, 7:13, 8:14},
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7: {4:13, 5:13, 6:13, 7:13, 8:14},
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8: {4:14, 5:14, 6:14, 7:14, 8:14}}
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#-------------------------------------
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def keyExpansion(algInstance, keyString):
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""" Expand a string of size keySize into a larger array """
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Nk, Nb, Nr = algInstance.Nk, algInstance.Nb, algInstance.Nr # for readability
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key = [ord(byte) for byte in keyString] # convert string to list
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w = [[key[4*i],key[4*i+1],key[4*i+2],key[4*i+3]] for i in range(Nk)]
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for i in range(Nk,Nb*(Nr+1)):
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temp = w[i-1] # a four byte column
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if (i%Nk) == 0 :
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temp = temp[1:]+[temp[0]] # RotWord(temp)
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temp = [ Sbox[byte] for byte in temp ]
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temp[0] ^= Rcon[i/Nk]
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elif Nk > 6 and i%Nk == 4 :
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temp = [ Sbox[byte] for byte in temp ] # SubWord(temp)
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w.append( [ w[i-Nk][byte]^temp[byte] for byte in range(4) ] )
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return w
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Rcon = (0,0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x1b,0x36, # note extra '0' !!!
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0x6c,0xd8,0xab,0x4d,0x9a,0x2f,0x5e,0xbc,0x63,0xc6,
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0x97,0x35,0x6a,0xd4,0xb3,0x7d,0xfa,0xef,0xc5,0x91)
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#-------------------------------------
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def AddRoundKey(algInstance, keyBlock):
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""" XOR the algorithm state with a block of key material """
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for column in range(algInstance.Nb):
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for row in range(4):
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algInstance.state[column][row] ^= keyBlock[column][row]
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#-------------------------------------
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def SubBytes(algInstance):
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for column in range(algInstance.Nb):
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for row in range(4):
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algInstance.state[column][row] = Sbox[algInstance.state[column][row]]
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def InvSubBytes(algInstance):
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for column in range(algInstance.Nb):
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for row in range(4):
|
|
algInstance.state[column][row] = InvSbox[algInstance.state[column][row]]
|
|
|
|
Sbox = (0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,
|
|
0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
|
|
0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,
|
|
0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
|
|
0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,
|
|
0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
|
|
0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,
|
|
0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
|
|
0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,
|
|
0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
|
|
0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,
|
|
0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
|
|
0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,
|
|
0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
|
|
0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,
|
|
0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
|
|
0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,
|
|
0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
|
|
0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,
|
|
0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
|
|
0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,
|
|
0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
|
|
0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,
|
|
0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
|
|
0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,
|
|
0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
|
|
0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,
|
|
0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
|
|
0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,
|
|
0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
|
|
0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,
|
|
0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16)
|
|
|
|
InvSbox = (0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,
|
|
0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb,
|
|
0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,
|
|
0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb,
|
|
0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,
|
|
0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e,
|
|
0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,
|
|
0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25,
|
|
0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,
|
|
0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92,
|
|
0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,
|
|
0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84,
|
|
0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,
|
|
0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06,
|
|
0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,
|
|
0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b,
|
|
0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,
|
|
0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73,
|
|
0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,
|
|
0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e,
|
|
0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,
|
|
0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b,
|
|
0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,
|
|
0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4,
|
|
0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,
|
|
0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f,
|
|
0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,
|
|
0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef,
|
|
0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,
|
|
0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61,
|
|
0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,
|
|
0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d)
|
|
|
|
#-------------------------------------
|
|
""" For each block size (Nb), the ShiftRow operation shifts row i
|
|
by the amount Ci. Note that row 0 is not shifted.
|
|
Nb C1 C2 C3
|
|
------------------- """
|
|
shiftOffset = { 4 : ( 0, 1, 2, 3),
|
|
5 : ( 0, 1, 2, 3),
|
|
6 : ( 0, 1, 2, 3),
|
|
7 : ( 0, 1, 2, 4),
|
|
8 : ( 0, 1, 3, 4) }
|
|
def ShiftRows(algInstance):
|
|
tmp = [0]*algInstance.Nb # list of size Nb
|
|
for r in range(1,4): # row 0 reamains unchanged and can be skipped
|
|
for c in range(algInstance.Nb):
|
|
tmp[c] = algInstance.state[(c+shiftOffset[algInstance.Nb][r]) % algInstance.Nb][r]
|
|
for c in range(algInstance.Nb):
|
|
algInstance.state[c][r] = tmp[c]
|
|
def InvShiftRows(algInstance):
|
|
tmp = [0]*algInstance.Nb # list of size Nb
|
|
for r in range(1,4): # row 0 reamains unchanged and can be skipped
|
|
for c in range(algInstance.Nb):
|
|
tmp[c] = algInstance.state[(c+algInstance.Nb-shiftOffset[algInstance.Nb][r]) % algInstance.Nb][r]
|
|
for c in range(algInstance.Nb):
|
|
algInstance.state[c][r] = tmp[c]
|
|
#-------------------------------------
|
|
def MixColumns(a):
|
|
Sprime = [0,0,0,0]
|
|
for j in range(a.Nb): # for each column
|
|
Sprime[0] = mul(2,a.state[j][0])^mul(3,a.state[j][1])^mul(1,a.state[j][2])^mul(1,a.state[j][3])
|
|
Sprime[1] = mul(1,a.state[j][0])^mul(2,a.state[j][1])^mul(3,a.state[j][2])^mul(1,a.state[j][3])
|
|
Sprime[2] = mul(1,a.state[j][0])^mul(1,a.state[j][1])^mul(2,a.state[j][2])^mul(3,a.state[j][3])
|
|
Sprime[3] = mul(3,a.state[j][0])^mul(1,a.state[j][1])^mul(1,a.state[j][2])^mul(2,a.state[j][3])
|
|
for i in range(4):
|
|
a.state[j][i] = Sprime[i]
|
|
|
|
def InvMixColumns(a):
|
|
""" Mix the four bytes of every column in a linear way
|
|
This is the opposite operation of Mixcolumn """
|
|
Sprime = [0,0,0,0]
|
|
for j in range(a.Nb): # for each column
|
|
Sprime[0] = mul(0x0E,a.state[j][0])^mul(0x0B,a.state[j][1])^mul(0x0D,a.state[j][2])^mul(0x09,a.state[j][3])
|
|
Sprime[1] = mul(0x09,a.state[j][0])^mul(0x0E,a.state[j][1])^mul(0x0B,a.state[j][2])^mul(0x0D,a.state[j][3])
|
|
Sprime[2] = mul(0x0D,a.state[j][0])^mul(0x09,a.state[j][1])^mul(0x0E,a.state[j][2])^mul(0x0B,a.state[j][3])
|
|
Sprime[3] = mul(0x0B,a.state[j][0])^mul(0x0D,a.state[j][1])^mul(0x09,a.state[j][2])^mul(0x0E,a.state[j][3])
|
|
for i in range(4):
|
|
a.state[j][i] = Sprime[i]
|
|
|
|
#-------------------------------------
|
|
def mul(a, b):
|
|
""" Multiply two elements of GF(2^m)
|
|
needed for MixColumn and InvMixColumn """
|
|
if (a !=0 and b!=0):
|
|
return Alogtable[(Logtable[a] + Logtable[b])%255]
|
|
else:
|
|
return 0
|
|
|
|
Logtable = ( 0, 0, 25, 1, 50, 2, 26, 198, 75, 199, 27, 104, 51, 238, 223, 3,
|
|
100, 4, 224, 14, 52, 141, 129, 239, 76, 113, 8, 200, 248, 105, 28, 193,
|
|
125, 194, 29, 181, 249, 185, 39, 106, 77, 228, 166, 114, 154, 201, 9, 120,
|
|
101, 47, 138, 5, 33, 15, 225, 36, 18, 240, 130, 69, 53, 147, 218, 142,
|
|
150, 143, 219, 189, 54, 208, 206, 148, 19, 92, 210, 241, 64, 70, 131, 56,
|
|
102, 221, 253, 48, 191, 6, 139, 98, 179, 37, 226, 152, 34, 136, 145, 16,
|
|
126, 110, 72, 195, 163, 182, 30, 66, 58, 107, 40, 84, 250, 133, 61, 186,
|
|
43, 121, 10, 21, 155, 159, 94, 202, 78, 212, 172, 229, 243, 115, 167, 87,
|
|
175, 88, 168, 80, 244, 234, 214, 116, 79, 174, 233, 213, 231, 230, 173, 232,
|
|
44, 215, 117, 122, 235, 22, 11, 245, 89, 203, 95, 176, 156, 169, 81, 160,
|
|
127, 12, 246, 111, 23, 196, 73, 236, 216, 67, 31, 45, 164, 118, 123, 183,
|
|
204, 187, 62, 90, 251, 96, 177, 134, 59, 82, 161, 108, 170, 85, 41, 157,
|
|
151, 178, 135, 144, 97, 190, 220, 252, 188, 149, 207, 205, 55, 63, 91, 209,
|
|
83, 57, 132, 60, 65, 162, 109, 71, 20, 42, 158, 93, 86, 242, 211, 171,
|
|
68, 17, 146, 217, 35, 32, 46, 137, 180, 124, 184, 38, 119, 153, 227, 165,
|
|
103, 74, 237, 222, 197, 49, 254, 24, 13, 99, 140, 128, 192, 247, 112, 7)
|
|
|
|
Alogtable= ( 1, 3, 5, 15, 17, 51, 85, 255, 26, 46, 114, 150, 161, 248, 19, 53,
|
|
95, 225, 56, 72, 216, 115, 149, 164, 247, 2, 6, 10, 30, 34, 102, 170,
|
|
229, 52, 92, 228, 55, 89, 235, 38, 106, 190, 217, 112, 144, 171, 230, 49,
|
|
83, 245, 4, 12, 20, 60, 68, 204, 79, 209, 104, 184, 211, 110, 178, 205,
|
|
76, 212, 103, 169, 224, 59, 77, 215, 98, 166, 241, 8, 24, 40, 120, 136,
|
|
131, 158, 185, 208, 107, 189, 220, 127, 129, 152, 179, 206, 73, 219, 118, 154,
|
|
181, 196, 87, 249, 16, 48, 80, 240, 11, 29, 39, 105, 187, 214, 97, 163,
|
|
254, 25, 43, 125, 135, 146, 173, 236, 47, 113, 147, 174, 233, 32, 96, 160,
|
|
251, 22, 58, 78, 210, 109, 183, 194, 93, 231, 50, 86, 250, 21, 63, 65,
|
|
195, 94, 226, 61, 71, 201, 64, 192, 91, 237, 44, 116, 156, 191, 218, 117,
|
|
159, 186, 213, 100, 172, 239, 42, 126, 130, 157, 188, 223, 122, 142, 137, 128,
|
|
155, 182, 193, 88, 232, 35, 101, 175, 234, 37, 111, 177, 200, 67, 197, 84,
|
|
252, 31, 33, 99, 165, 244, 7, 9, 27, 45, 119, 153, 176, 203, 70, 202,
|
|
69, 207, 74, 222, 121, 139, 134, 145, 168, 227, 62, 66, 198, 81, 243, 14,
|
|
18, 54, 90, 238, 41, 123, 141, 140, 143, 138, 133, 148, 167, 242, 13, 23,
|
|
57, 75, 221, 124, 132, 151, 162, 253, 28, 36, 108, 180, 199, 82, 246, 1)
|
|
|
|
|
|
|
|
|
|
"""
|
|
AES Encryption Algorithm
|
|
The AES algorithm is just Rijndael algorithm restricted to the default
|
|
blockSize of 128 bits.
|
|
"""
|
|
|
|
class AES(Rijndael):
|
|
""" The AES algorithm is the Rijndael block cipher restricted to block
|
|
sizes of 128 bits and key sizes of 128, 192 or 256 bits
|
|
"""
|
|
def __init__(self, key = None, padding = padWithPadLen(), keySize=16):
|
|
""" Initialize AES, keySize is in bytes """
|
|
if not (keySize == 16 or keySize == 24 or keySize == 32) :
|
|
raise BadKeySizeError, 'Illegal AES key size, must be 16, 24, or 32 bytes'
|
|
|
|
Rijndael.__init__( self, key, padding=padding, keySize=keySize, blockSize=16 )
|
|
|
|
self.name = 'AES'
|
|
|
|
|
|
"""
|
|
CBC mode of encryption for block ciphers.
|
|
This algorithm mode wraps any BlockCipher to make a
|
|
Cipher Block Chaining mode.
|
|
"""
|
|
from random import Random # should change to crypto.random!!!
|
|
|
|
|
|
class CBC(BlockCipher):
|
|
""" The CBC class wraps block ciphers to make cipher block chaining (CBC) mode
|
|
algorithms. The initialization (IV) is automatic if set to None. Padding
|
|
is also automatic based on the Pad class used to initialize the algorithm
|
|
"""
|
|
def __init__(self, blockCipherInstance, padding = padWithPadLen()):
|
|
""" CBC algorithms are created by initializing with a BlockCipher instance """
|
|
self.baseCipher = blockCipherInstance
|
|
self.name = self.baseCipher.name + '_CBC'
|
|
self.blockSize = self.baseCipher.blockSize
|
|
self.keySize = self.baseCipher.keySize
|
|
self.padding = padding
|
|
self.baseCipher.padding = noPadding() # baseCipher should NOT pad!!
|
|
self.r = Random() # for IV generation, currently uses
|
|
# mediocre standard distro version <----------------
|
|
import time
|
|
newSeed = time.ctime()+str(self.r) # seed with instance location
|
|
self.r.seed(newSeed) # to make unique
|
|
self.reset()
|
|
|
|
def setKey(self, key):
|
|
self.baseCipher.setKey(key)
|
|
|
|
# Overload to reset both CBC state and the wrapped baseCipher
|
|
def resetEncrypt(self):
|
|
BlockCipher.resetEncrypt(self) # reset CBC encrypt state (super class)
|
|
self.baseCipher.resetEncrypt() # reset base cipher encrypt state
|
|
|
|
def resetDecrypt(self):
|
|
BlockCipher.resetDecrypt(self) # reset CBC state (super class)
|
|
self.baseCipher.resetDecrypt() # reset base cipher decrypt state
|
|
|
|
def encrypt(self, plainText, iv=None, more=None):
|
|
""" CBC encryption - overloads baseCipher to allow optional explicit IV
|
|
when iv=None, iv is auto generated!
|
|
"""
|
|
if self.encryptBlockCount == 0:
|
|
self.iv = iv
|
|
else:
|
|
assert(iv==None), 'IV used only on first call to encrypt'
|
|
|
|
return BlockCipher.encrypt(self,plainText, more=more)
|
|
|
|
def decrypt(self, cipherText, iv=None, more=None):
|
|
""" CBC decryption - overloads baseCipher to allow optional explicit IV
|
|
when iv=None, iv is auto generated!
|
|
"""
|
|
if self.decryptBlockCount == 0:
|
|
self.iv = iv
|
|
else:
|
|
assert(iv==None), 'IV used only on first call to decrypt'
|
|
|
|
return BlockCipher.decrypt(self, cipherText, more=more)
|
|
|
|
def encryptBlock(self, plainTextBlock):
|
|
""" CBC block encryption, IV is set with 'encrypt' """
|
|
auto_IV = ''
|
|
if self.encryptBlockCount == 0:
|
|
if self.iv == None:
|
|
# generate IV and use
|
|
self.iv = ''.join([chr(self.r.randrange(256)) for i in range(self.blockSize)])
|
|
self.prior_encr_CT_block = self.iv
|
|
auto_IV = self.prior_encr_CT_block # prepend IV if it's automatic
|
|
else: # application provided IV
|
|
assert(len(self.iv) == self.blockSize ),'IV must be same length as block'
|
|
self.prior_encr_CT_block = self.iv
|
|
""" encrypt the prior CT XORed with the PT """
|
|
ct = self.baseCipher.encryptBlock( xor(self.prior_encr_CT_block, plainTextBlock) )
|
|
self.prior_encr_CT_block = ct
|
|
return auto_IV+ct
|
|
|
|
def decryptBlock(self, encryptedBlock):
|
|
""" Decrypt a single block """
|
|
|
|
if self.decryptBlockCount == 0: # first call, process IV
|
|
if self.iv == None: # auto decrypt IV?
|
|
self.prior_CT_block = encryptedBlock
|
|
return ''
|
|
else:
|
|
assert(len(self.iv)==self.blockSize),"Bad IV size on CBC decryption"
|
|
self.prior_CT_block = self.iv
|
|
|
|
dct = self.baseCipher.decryptBlock(encryptedBlock)
|
|
""" XOR the prior decrypted CT with the prior CT """
|
|
dct_XOR_priorCT = xor( self.prior_CT_block, dct )
|
|
|
|
self.prior_CT_block = encryptedBlock
|
|
|
|
return dct_XOR_priorCT
|
|
|
|
|
|
"""
|
|
AES_CBC Encryption Algorithm
|
|
"""
|
|
|
|
class aescbc_AES_CBC(CBC):
|
|
""" AES encryption in CBC feedback mode """
|
|
def __init__(self, key=None, padding=padWithPadLen(), keySize=16):
|
|
CBC.__init__( self, AES(key, noPadding(), keySize), padding)
|
|
self.name = 'AES_CBC'
|
|
|
|
class AES_CBC(object):
|
|
def __init__(self):
|
|
self._key = None
|
|
self._iv = None
|
|
self.aes = None
|
|
|
|
def set_decrypt_key(self, userkey, iv):
|
|
self._key = userkey
|
|
self._iv = iv
|
|
self.aes = aescbc_AES_CBC(userkey, noPadding(), len(userkey))
|
|
|
|
def decrypt(self, data):
|
|
iv = self._iv
|
|
cleartext = self.aes.decrypt(iv + data)
|
|
return cleartext
|
|
|
|
import hmac
|
|
|
|
class KeyIVGen(object):
|
|
# this only exists in openssl so we will use pure python implementation instead
|
|
# PKCS5_PBKDF2_HMAC_SHA1 = F(c_int, 'PKCS5_PBKDF2_HMAC_SHA1',
|
|
# [c_char_p, c_ulong, c_char_p, c_ulong, c_ulong, c_ulong, c_char_p])
|
|
def pbkdf2(self, passwd, salt, iter, keylen):
|
|
|
|
def xorstr( a, b ):
|
|
if len(a) != len(b):
|
|
raise Exception("xorstr(): lengths differ")
|
|
return ''.join((chr(ord(x)^ord(y)) for x, y in zip(a, b)))
|
|
|
|
def prf( h, data ):
|
|
hm = h.copy()
|
|
hm.update( data )
|
|
return hm.digest()
|
|
|
|
def pbkdf2_F( h, salt, itercount, blocknum ):
|
|
U = prf( h, salt + pack('>i',blocknum ) )
|
|
T = U
|
|
for i in range(2, itercount+1):
|
|
U = prf( h, U )
|
|
T = xorstr( T, U )
|
|
return T
|
|
|
|
sha = hashlib.sha1
|
|
digest_size = sha().digest_size
|
|
# l - number of output blocks to produce
|
|
l = keylen / digest_size
|
|
if keylen % digest_size != 0:
|
|
l += 1
|
|
h = hmac.new( passwd, None, sha )
|
|
T = ""
|
|
for i in range(1, l+1):
|
|
T += pbkdf2_F( h, salt, iter, i )
|
|
return T[0: keylen]
|
|
|
|
def UnprotectHeaderData(encryptedData):
|
|
passwdData = 'header_key_data'
|
|
salt = 'HEADER.2011'
|
|
iter = 0x80
|
|
keylen = 0x100
|
|
key_iv = KeyIVGen().pbkdf2(passwdData, salt, iter, keylen)
|
|
key = key_iv[0:32]
|
|
iv = key_iv[32:48]
|
|
aes=AES_CBC()
|
|
aes.set_decrypt_key(key, iv)
|
|
cleartext = aes.decrypt(encryptedData)
|
|
return cleartext
|
|
|
|
# Various character maps used to decrypt kindle info values.
|
|
# Probably supposed to act as obfuscation
|
|
charMap2 = "AaZzB0bYyCc1XxDdW2wEeVv3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_"
|
|
charMap5 = "AzB0bYyCeVvaZ3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_c1XxDdW2wE"
|
|
# New maps in K4PC 1.9.0
|
|
testMap1 = "n5Pr6St7Uv8Wx9YzAb0Cd1Ef2Gh3Jk4M"
|
|
testMap6 = "9YzAb0Cd1Ef2n5Pr6St7Uvh3Jk4M8WxG"
|
|
testMap8 = "YvaZ3FfUm9Nn_c1XuG4yCAzB0beVg-TtHh5SsIiR6rJjQdW2wEq7KkPpL8lOoMxD"
|
|
|
|
# interface with Windows OS Routines
|
|
class DataBlob(Structure):
|
|
_fields_ = [('cbData', c_uint),
|
|
('pbData', c_void_p)]
|
|
DataBlob_p = POINTER(DataBlob)
|
|
|
|
|
|
def GetSystemDirectory():
|
|
GetSystemDirectoryW = kernel32.GetSystemDirectoryW
|
|
GetSystemDirectoryW.argtypes = [c_wchar_p, c_uint]
|
|
GetSystemDirectoryW.restype = c_uint
|
|
def GetSystemDirectory():
|
|
buffer = create_unicode_buffer(MAX_PATH + 1)
|
|
GetSystemDirectoryW(buffer, len(buffer))
|
|
return buffer.value
|
|
return GetSystemDirectory
|
|
GetSystemDirectory = GetSystemDirectory()
|
|
|
|
def GetVolumeSerialNumber():
|
|
GetVolumeInformationW = kernel32.GetVolumeInformationW
|
|
GetVolumeInformationW.argtypes = [c_wchar_p, c_wchar_p, c_uint,
|
|
POINTER(c_uint), POINTER(c_uint),
|
|
POINTER(c_uint), c_wchar_p, c_uint]
|
|
GetVolumeInformationW.restype = c_uint
|
|
def GetVolumeSerialNumber(path = GetSystemDirectory().split('\\')[0] + '\\'):
|
|
vsn = c_uint(0)
|
|
GetVolumeInformationW(path, None, 0, byref(vsn), None, None, None, 0)
|
|
return str(vsn.value)
|
|
return GetVolumeSerialNumber
|
|
GetVolumeSerialNumber = GetVolumeSerialNumber()
|
|
|
|
def GetIDString():
|
|
vsn = GetVolumeSerialNumber()
|
|
#print('Using Volume Serial Number for ID: '+vsn)
|
|
return vsn
|
|
|
|
def getLastError():
|
|
GetLastError = kernel32.GetLastError
|
|
GetLastError.argtypes = None
|
|
GetLastError.restype = c_uint
|
|
def getLastError():
|
|
return GetLastError()
|
|
return getLastError
|
|
getLastError = getLastError()
|
|
|
|
def GetUserName():
|
|
GetUserNameW = advapi32.GetUserNameW
|
|
GetUserNameW.argtypes = [c_wchar_p, POINTER(c_uint)]
|
|
GetUserNameW.restype = c_uint
|
|
def GetUserName():
|
|
buffer = create_unicode_buffer(2)
|
|
size = c_uint(len(buffer))
|
|
while not GetUserNameW(buffer, byref(size)):
|
|
errcd = getLastError()
|
|
if errcd == 234:
|
|
# bad wine implementation up through wine 1.3.21
|
|
return "AlternateUserName"
|
|
# double the buffer size
|
|
buffer = create_unicode_buffer(len(buffer) * 2)
|
|
size.value = len(buffer)
|
|
|
|
# replace any non-ASCII values with 0xfffd
|
|
for i in xrange(0,len(buffer)):
|
|
if buffer[i]>u"\u007f":
|
|
#print u"swapping char "+str(i)+" ("+buffer[i]+")"
|
|
buffer[i] = u"\ufffd"
|
|
# return utf-8 encoding of modified username
|
|
#print u"modified username:"+buffer.value
|
|
return buffer.value.encode('utf-8')
|
|
return GetUserName
|
|
GetUserName = GetUserName()
|
|
|
|
def CryptUnprotectData():
|
|
_CryptUnprotectData = crypt32.CryptUnprotectData
|
|
_CryptUnprotectData.argtypes = [DataBlob_p, c_wchar_p, DataBlob_p,
|
|
c_void_p, c_void_p, c_uint, DataBlob_p]
|
|
_CryptUnprotectData.restype = c_uint
|
|
def CryptUnprotectData(indata, entropy, flags):
|
|
indatab = create_string_buffer(indata)
|
|
indata = DataBlob(len(indata), cast(indatab, c_void_p))
|
|
entropyb = create_string_buffer(entropy)
|
|
entropy = DataBlob(len(entropy), cast(entropyb, c_void_p))
|
|
outdata = DataBlob()
|
|
if not _CryptUnprotectData(byref(indata), None, byref(entropy),
|
|
None, None, flags, byref(outdata)):
|
|
# raise DrmException("Failed to Unprotect Data")
|
|
return 'failed'
|
|
return string_at(outdata.pbData, outdata.cbData)
|
|
return CryptUnprotectData
|
|
CryptUnprotectData = CryptUnprotectData()
|
|
|
|
# Returns Environmental Variables that contain unicode
|
|
def getEnvironmentVariable(name):
|
|
import ctypes
|
|
name = unicode(name) # make sure string argument is unicode
|
|
n = ctypes.windll.kernel32.GetEnvironmentVariableW(name, None, 0)
|
|
if n == 0:
|
|
return None
|
|
buf = ctypes.create_unicode_buffer(u'\0'*n)
|
|
ctypes.windll.kernel32.GetEnvironmentVariableW(name, buf, n)
|
|
return buf.value
|
|
|
|
# Locate all of the kindle-info style files and return as list
|
|
def getKindleInfoFiles():
|
|
kInfoFiles = []
|
|
# some 64 bit machines do not have the proper registry key for some reason
|
|
# or the python interface to the 32 vs 64 bit registry is broken
|
|
path = ""
|
|
if 'LOCALAPPDATA' in os.environ.keys():
|
|
# Python 2.x does not return unicode env. Use Python 3.x
|
|
path = winreg.ExpandEnvironmentStrings(u"%LOCALAPPDATA%")
|
|
# this is just another alternative.
|
|
# path = getEnvironmentVariable('LOCALAPPDATA')
|
|
if not os.path.isdir(path):
|
|
path = ""
|
|
else:
|
|
# User Shell Folders show take precedent over Shell Folders if present
|
|
try:
|
|
# this will still break
|
|
regkey = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\User Shell Folders\\")
|
|
path = winreg.QueryValueEx(regkey, 'Local AppData')[0]
|
|
if not os.path.isdir(path):
|
|
path = ""
|
|
try:
|
|
regkey = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\\")
|
|
path = winreg.QueryValueEx(regkey, 'Local AppData')[0]
|
|
if not os.path.isdir(path):
|
|
path = ""
|
|
except RegError:
|
|
pass
|
|
except RegError:
|
|
pass
|
|
|
|
found = False
|
|
if path == "":
|
|
print ('Could not find the folder in which to look for kinfoFiles.')
|
|
else:
|
|
# Probably not the best. To Fix (shouldn't ignore in encoding) or use utf-8
|
|
print(u'searching for kinfoFiles in ' + path.encode('ascii', 'ignore'))
|
|
|
|
# look for (K4PC 1.25.1 and later) .kinf2018 file
|
|
kinfopath = path +'\\Amazon\\Kindle\\storage\\.kinf2018'
|
|
if os.path.isfile(kinfopath):
|
|
found = True
|
|
print('Found K4PC 1.25+ kinf2018 file: ' + kinfopath.encode('ascii','ignore'))
|
|
kInfoFiles.append(kinfopath)
|
|
|
|
# look for (K4PC 1.9.0 and later) .kinf2011 file
|
|
kinfopath = path +'\\Amazon\\Kindle\\storage\\.kinf2011'
|
|
if os.path.isfile(kinfopath):
|
|
found = True
|
|
print('Found K4PC 1.9+ kinf2011 file: ' + kinfopath.encode('ascii','ignore'))
|
|
kInfoFiles.append(kinfopath)
|
|
|
|
# look for (K4PC 1.6.0 and later) rainier.2.1.1.kinf file
|
|
kinfopath = path +'\\Amazon\\Kindle\\storage\\rainier.2.1.1.kinf'
|
|
if os.path.isfile(kinfopath):
|
|
found = True
|
|
print('Found K4PC 1.6-1.8 kinf file: ' + kinfopath)
|
|
kInfoFiles.append(kinfopath)
|
|
|
|
# look for (K4PC 1.5.0 and later) rainier.2.1.1.kinf file
|
|
kinfopath = path +'\\Amazon\\Kindle For PC\\storage\\rainier.2.1.1.kinf'
|
|
if os.path.isfile(kinfopath):
|
|
found = True
|
|
print('Found K4PC 1.5 kinf file: ' + kinfopath)
|
|
kInfoFiles.append(kinfopath)
|
|
|
|
# look for original (earlier than K4PC 1.5.0) kindle-info files
|
|
kinfopath = path +'\\Amazon\\Kindle For PC\\{AMAwzsaPaaZAzmZzZQzgZCAkZ3AjA_AY}\\kindle.info'
|
|
if os.path.isfile(kinfopath):
|
|
found = True
|
|
print('Found K4PC kindle.info file: ' + kinfopath)
|
|
kInfoFiles.append(kinfopath)
|
|
|
|
if not found:
|
|
print('No K4PC kindle.info/kinf/kinf2011 files have been found.')
|
|
return kInfoFiles
|
|
|
|
|
|
# determine type of kindle info provided and return a
|
|
# database of keynames and values
|
|
def getDBfromFile(kInfoFile):
|
|
names = [\
|
|
'kindle.account.tokens',\
|
|
'kindle.cookie.item',\
|
|
'eulaVersionAccepted',\
|
|
'login_date',\
|
|
'kindle.token.item',\
|
|
'login',\
|
|
'kindle.key.item',\
|
|
'kindle.name.info',\
|
|
'kindle.device.info',\
|
|
'MazamaRandomNumber',\
|
|
'max_date',\
|
|
'SIGVERIF',\
|
|
'build_version',\
|
|
'SerialNumber',\
|
|
'UsernameHash',\
|
|
'kindle.directedid.info',\
|
|
'DSN',\
|
|
'kindle.accounttype.info',\
|
|
'krx.flashcardsplugin.data.encryption_key',\
|
|
'krx.notebookexportplugin.data.encryption_key',\
|
|
'proxy.http.password',\
|
|
'proxy.http.username'
|
|
]
|
|
DB = {}
|
|
with open(kInfoFile, 'rb') as infoReader:
|
|
data = infoReader.read()
|
|
# assume .kinf2011 or .kinf2018 style .kinf file
|
|
# the .kinf file uses "/" to separate it into records
|
|
# so remove the trailing "/" to make it easy to use split
|
|
data = data[:-1]
|
|
items = data.split('/')
|
|
|
|
# starts with an encoded and encrypted header blob
|
|
headerblob = items.pop(0)
|
|
encryptedValue = decode(headerblob, testMap1)
|
|
cleartext = UnprotectHeaderData(encryptedValue)
|
|
#print "header cleartext:",cleartext
|
|
# now extract the pieces that form the added entropy
|
|
pattern = re.compile(r'''\[Version:(\d+)\]\[Build:(\d+)\]\[Cksum:([^\]]+)\]\[Guid:([\{\}a-z0-9\-]+)\]''', re.IGNORECASE)
|
|
for m in re.finditer(pattern, cleartext):
|
|
version = int(m.group(1))
|
|
build = m.group(2)
|
|
guid = m.group(4)
|
|
|
|
if version == 5: # .kinf2011
|
|
added_entropy = build + guid
|
|
elif version == 6: # .kinf2018
|
|
salt = str(0x6d8 * int(build)) + guid
|
|
sp = GetUserName() + '+@#$%+' + GetIDString()
|
|
passwd = encode(SHA256(sp), charMap5)
|
|
key = KeyIVGen().pbkdf2(passwd, salt, 10000, 0x400)[:32] # this is very slow
|
|
|
|
# loop through the item records until all are processed
|
|
while len(items) > 0:
|
|
|
|
# get the first item record
|
|
item = items.pop(0)
|
|
|
|
# the first 32 chars of the first record of a group
|
|
# is the MD5 hash of the key name encoded by charMap5
|
|
keyhash = item[0:32]
|
|
|
|
# the remainder of the first record when decoded with charMap5
|
|
# has the ':' split char followed by the string representation
|
|
# of the number of records that follow
|
|
# and make up the contents
|
|
srcnt = decode(item[34:],charMap5)
|
|
rcnt = int(srcnt)
|
|
|
|
# read and store in rcnt records of data
|
|
# that make up the contents value
|
|
edlst = []
|
|
for i in xrange(rcnt):
|
|
item = items.pop(0)
|
|
edlst.append(item)
|
|
|
|
# key names now use the new testMap8 encoding
|
|
keyname = "unknown"
|
|
for name in names:
|
|
if encodeHash(name,testMap8) == keyhash:
|
|
keyname = name
|
|
#print "keyname found from hash:",keyname
|
|
break
|
|
if keyname == "unknown":
|
|
keyname = keyhash
|
|
#print "keyname not found, hash is:",keyname
|
|
|
|
# the testMap8 encoded contents data has had a length
|
|
# of chars (always odd) cut off of the front and moved
|
|
# to the end to prevent decoding using testMap8 from
|
|
# working properly, and thereby preventing the ensuing
|
|
# CryptUnprotectData call from succeeding.
|
|
|
|
# The offset into the testMap8 encoded contents seems to be:
|
|
# len(contents)-largest prime number <= int(len(content)/3)
|
|
# (in other words split "about" 2/3rds of the way through)
|
|
|
|
# move first offsets chars to end to align for decode by testMap8
|
|
# by moving noffset chars from the start of the
|
|
# string to the end of the string
|
|
encdata = "".join(edlst)
|
|
#print "encrypted data:",encdata
|
|
contlen = len(encdata)
|
|
noffset = contlen - primes(int(contlen/3))[-1]
|
|
pfx = encdata[0:noffset]
|
|
encdata = encdata[noffset:]
|
|
encdata = encdata + pfx
|
|
#print "rearranged data:",encdata
|
|
|
|
if version == 5:
|
|
# decode using new testMap8 to get the original CryptProtect Data
|
|
encryptedValue = decode(encdata,testMap8)
|
|
#print "decoded data:",encryptedValue.encode('hex')
|
|
entropy = SHA1(keyhash) + added_entropy
|
|
cleartext = CryptUnprotectData(encryptedValue, entropy, 1)
|
|
elif version == 6:
|
|
from Crypto.Cipher import AES
|
|
from Crypto.Util import Counter
|
|
# decode using new testMap8 to get IV + ciphertext
|
|
iv_ciphertext = decode(encdata, testMap8)
|
|
# pad IV so that we can substitute AES-CTR for GCM
|
|
iv = iv_ciphertext[:12] + b'\x00\x00\x00\x02'
|
|
ciphertext = iv_ciphertext[12:]
|
|
# convert IV to int for use with pycrypto
|
|
iv_ints = unpack('>QQ', iv)
|
|
iv = iv_ints[0] << 64 | iv_ints[1]
|
|
# set up AES-CTR
|
|
ctr = Counter.new(128, initial_value=iv)
|
|
cipher = AES.new(key, AES.MODE_CTR, counter=ctr)
|
|
# decrypt and decode
|
|
cleartext = decode(cipher.decrypt(ciphertext), charMap5)
|
|
|
|
if len(cleartext)>0:
|
|
#print "cleartext data:",cleartext,":end data"
|
|
DB[keyname] = cleartext
|
|
#print keyname, cleartext
|
|
|
|
if len(DB)>6:
|
|
# store values used in decryption
|
|
DB['IDString'] = GetIDString()
|
|
DB['UserName'] = GetUserName()
|
|
print u"Decrypted key file using IDString '{0:s}' and UserName '{1:s}'".format(GetIDString(), GetUserName().encode('hex'))
|
|
else:
|
|
print u"Couldn't decrypt file."
|
|
DB = {}
|
|
return DB
|
|
elif isosx:
|
|
import copy
|
|
import subprocess
|
|
|
|
# interface to needed routines in openssl's libcrypto
|
|
def _load_crypto_libcrypto():
|
|
from ctypes import CDLL, byref, POINTER, c_void_p, c_char_p, c_int, c_long, \
|
|
Structure, c_ulong, create_string_buffer, addressof, string_at, cast
|
|
from ctypes.util import find_library
|
|
|
|
libcrypto = find_library('crypto')
|
|
if libcrypto is None:
|
|
libcrypto = '/usr/lib/libcrypto.dylib'
|
|
try:
|
|
libcrypto = CDLL(libcrypto)
|
|
except Exception as e:
|
|
raise DrmException(u"libcrypto not found: " % e)
|
|
|
|
|
|
# From OpenSSL's crypto aes header
|
|
#
|
|
# AES_ENCRYPT 1
|
|
# AES_DECRYPT 0
|
|
# AES_MAXNR 14 (in bytes)
|
|
# AES_BLOCK_SIZE 16 (in bytes)
|
|
#
|
|
# struct aes_key_st {
|
|
# unsigned long rd_key[4 *(AES_MAXNR + 1)];
|
|
# int rounds;
|
|
# };
|
|
# typedef struct aes_key_st AES_KEY;
|
|
#
|
|
# int AES_set_decrypt_key(const unsigned char *userKey, const int bits, AES_KEY *key);
|
|
#
|
|
# note: the ivec string, and output buffer are both mutable
|
|
# void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
|
# const unsigned long length, const AES_KEY *key, unsigned char *ivec, const int enc);
|
|
|
|
AES_MAXNR = 14
|
|
c_char_pp = POINTER(c_char_p)
|
|
c_int_p = POINTER(c_int)
|
|
|
|
class AES_KEY(Structure):
|
|
_fields_ = [('rd_key', c_long * (4 * (AES_MAXNR + 1))), ('rounds', c_int)]
|
|
AES_KEY_p = POINTER(AES_KEY)
|
|
|
|
def F(restype, name, argtypes):
|
|
func = getattr(libcrypto, name)
|
|
func.restype = restype
|
|
func.argtypes = argtypes
|
|
return func
|
|
|
|
AES_cbc_encrypt = F(None, 'AES_cbc_encrypt',[c_char_p, c_char_p, c_ulong, AES_KEY_p, c_char_p,c_int])
|
|
|
|
AES_set_decrypt_key = F(c_int, 'AES_set_decrypt_key',[c_char_p, c_int, AES_KEY_p])
|
|
|
|
# From OpenSSL's Crypto evp/p5_crpt2.c
|
|
#
|
|
# int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
|
|
# const unsigned char *salt, int saltlen, int iter,
|
|
# int keylen, unsigned char *out);
|
|
|
|
PKCS5_PBKDF2_HMAC_SHA1 = F(c_int, 'PKCS5_PBKDF2_HMAC_SHA1',
|
|
[c_char_p, c_ulong, c_char_p, c_ulong, c_ulong, c_ulong, c_char_p])
|
|
|
|
class LibCrypto(object):
|
|
def __init__(self):
|
|
self._blocksize = 0
|
|
self._keyctx = None
|
|
self._iv = 0
|
|
|
|
def set_decrypt_key(self, userkey, iv):
|
|
self._blocksize = len(userkey)
|
|
if (self._blocksize != 16) and (self._blocksize != 24) and (self._blocksize != 32) :
|
|
raise DrmException(u"AES improper key used")
|
|
return
|
|
keyctx = self._keyctx = AES_KEY()
|
|
self._iv = iv
|
|
self._userkey = userkey
|
|
rv = AES_set_decrypt_key(userkey, len(userkey) * 8, keyctx)
|
|
if rv < 0:
|
|
raise DrmException(u"Failed to initialize AES key")
|
|
|
|
def decrypt(self, data):
|
|
out = create_string_buffer(len(data))
|
|
mutable_iv = create_string_buffer(self._iv, len(self._iv))
|
|
keyctx = self._keyctx
|
|
rv = AES_cbc_encrypt(data, out, len(data), keyctx, mutable_iv, 0)
|
|
if rv == 0:
|
|
raise DrmException(u"AES decryption failed")
|
|
return out.raw
|
|
|
|
def keyivgen(self, passwd, salt, iter, keylen):
|
|
saltlen = len(salt)
|
|
passlen = len(passwd)
|
|
out = create_string_buffer(keylen)
|
|
rv = PKCS5_PBKDF2_HMAC_SHA1(passwd, passlen, salt, saltlen, iter, keylen, out)
|
|
return out.raw
|
|
return LibCrypto
|
|
|
|
def _load_crypto():
|
|
LibCrypto = None
|
|
try:
|
|
LibCrypto = _load_crypto_libcrypto()
|
|
except (ImportError, DrmException):
|
|
pass
|
|
return LibCrypto
|
|
|
|
LibCrypto = _load_crypto()
|
|
|
|
# Various character maps used to decrypt books. Probably supposed to act as obfuscation
|
|
charMap1 = 'n5Pr6St7Uv8Wx9YzAb0Cd1Ef2Gh3Jk4M'
|
|
charMap2 = 'ZB0bYyc1xDdW2wEV3Ff7KkPpL8UuGA4gz-Tme9Nn_tHh5SvXCsIiR6rJjQaqlOoM'
|
|
|
|
# For kinf approach of K4Mac 1.6.X or later
|
|
# On K4PC charMap5 = 'AzB0bYyCeVvaZ3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_c1XxDdW2wE'
|
|
# For Mac they seem to re-use charMap2 here
|
|
charMap5 = charMap2
|
|
|
|
# new in K4M 1.9.X
|
|
testMap8 = 'YvaZ3FfUm9Nn_c1XuG4yCAzB0beVg-TtHh5SsIiR6rJjQdW2wEq7KkPpL8lOoMxD'
|
|
|
|
# uses a sub process to get the Hard Drive Serial Number using ioreg
|
|
# returns serial numbers of all internal hard drive drives
|
|
def GetVolumesSerialNumbers():
|
|
sernums = []
|
|
sernum = os.getenv('MYSERIALNUMBER')
|
|
if sernum != None:
|
|
sernums.append(sernum.strip())
|
|
cmdline = '/usr/sbin/ioreg -w 0 -r -c AppleAHCIDiskDriver'
|
|
cmdline = cmdline.encode(sys.getfilesystemencoding())
|
|
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
|
|
out1, out2 = p.communicate()
|
|
#print out1
|
|
reslst = out1.split('\n')
|
|
cnt = len(reslst)
|
|
for j in xrange(cnt):
|
|
resline = reslst[j]
|
|
pp = resline.find('\"Serial Number\" = \"')
|
|
if pp >= 0:
|
|
sernum = resline[pp+19:-1]
|
|
sernums.append(sernum.strip())
|
|
return sernums
|
|
|
|
def GetDiskPartitionNames():
|
|
names = []
|
|
cmdline = '/sbin/mount'
|
|
cmdline = cmdline.encode(sys.getfilesystemencoding())
|
|
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
|
|
out1, out2 = p.communicate()
|
|
reslst = out1.split('\n')
|
|
cnt = len(reslst)
|
|
for j in xrange(cnt):
|
|
resline = reslst[j]
|
|
if resline.startswith('/dev'):
|
|
(devpart, mpath) = resline.split(' on ')[:2]
|
|
dpart = devpart[5:]
|
|
names.append(dpart)
|
|
return names
|
|
|
|
# uses a sub process to get the UUID of all disk partitions
|
|
def GetDiskPartitionUUIDs():
|
|
uuids = []
|
|
uuidnum = os.getenv('MYUUIDNUMBER')
|
|
if uuidnum != None:
|
|
uuids.append(uuidnum.strip())
|
|
cmdline = '/usr/sbin/ioreg -l -S -w 0 -r -c AppleAHCIDiskDriver'
|
|
cmdline = cmdline.encode(sys.getfilesystemencoding())
|
|
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
|
|
out1, out2 = p.communicate()
|
|
#print out1
|
|
reslst = out1.split('\n')
|
|
cnt = len(reslst)
|
|
for j in xrange(cnt):
|
|
resline = reslst[j]
|
|
pp = resline.find('\"UUID\" = \"')
|
|
if pp >= 0:
|
|
uuidnum = resline[pp+10:-1]
|
|
uuidnum = uuidnum.strip()
|
|
uuids.append(uuidnum)
|
|
return uuids
|
|
|
|
def GetMACAddressesMunged():
|
|
macnums = []
|
|
macnum = os.getenv('MYMACNUM')
|
|
if macnum != None:
|
|
macnums.append(macnum)
|
|
cmdline = 'networksetup -listallhardwareports' # en0'
|
|
cmdline = cmdline.encode(sys.getfilesystemencoding())
|
|
p = subprocess.Popen(cmdline, shell=True, stdin=None, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=False)
|
|
out1, out2 = p.communicate()
|
|
reslst = out1.split('\n')
|
|
cnt = len(reslst)
|
|
for j in xrange(cnt):
|
|
resline = reslst[j]
|
|
pp = resline.find('Ethernet Address: ')
|
|
if pp >= 0:
|
|
#print resline
|
|
macnum = resline[pp+18:]
|
|
macnum = macnum.strip()
|
|
maclst = macnum.split(':')
|
|
n = len(maclst)
|
|
if n != 6:
|
|
continue
|
|
#print 'original mac', macnum
|
|
# now munge it up the way Kindle app does
|
|
# by xoring it with 0xa5 and swapping elements 3 and 4
|
|
for i in range(6):
|
|
maclst[i] = int('0x' + maclst[i], 0)
|
|
mlst = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
|
|
mlst[5] = maclst[5] ^ 0xa5
|
|
mlst[4] = maclst[3] ^ 0xa5
|
|
mlst[3] = maclst[4] ^ 0xa5
|
|
mlst[2] = maclst[2] ^ 0xa5
|
|
mlst[1] = maclst[1] ^ 0xa5
|
|
mlst[0] = maclst[0] ^ 0xa5
|
|
macnum = '%0.2x%0.2x%0.2x%0.2x%0.2x%0.2x' % (mlst[0], mlst[1], mlst[2], mlst[3], mlst[4], mlst[5])
|
|
#print 'munged mac', macnum
|
|
macnums.append(macnum)
|
|
return macnums
|
|
|
|
|
|
# uses unix env to get username instead of using sysctlbyname
|
|
def GetUserName():
|
|
username = os.getenv('USER')
|
|
#print "Username:",username
|
|
return username
|
|
|
|
def GetIDStrings():
|
|
# Return all possible ID Strings
|
|
strings = []
|
|
strings.extend(GetMACAddressesMunged())
|
|
strings.extend(GetVolumesSerialNumbers())
|
|
strings.extend(GetDiskPartitionNames())
|
|
strings.extend(GetDiskPartitionUUIDs())
|
|
strings.append('9999999999')
|
|
#print "ID Strings:\n",strings
|
|
return strings
|
|
|
|
|
|
# unprotect the new header blob in .kinf2011
|
|
# used in Kindle for Mac Version >= 1.9.0
|
|
def UnprotectHeaderData(encryptedData):
|
|
passwdData = 'header_key_data'
|
|
salt = 'HEADER.2011'
|
|
iter = 0x80
|
|
keylen = 0x100
|
|
crp = LibCrypto()
|
|
key_iv = crp.keyivgen(passwdData, salt, iter, keylen)
|
|
key = key_iv[0:32]
|
|
iv = key_iv[32:48]
|
|
crp.set_decrypt_key(key,iv)
|
|
cleartext = crp.decrypt(encryptedData)
|
|
return cleartext
|
|
|
|
|
|
# implements an Pseudo Mac Version of Windows built-in Crypto routine
|
|
class CryptUnprotectData(object):
|
|
def __init__(self, entropy, IDString):
|
|
sp = GetUserName() + '+@#$%+' + IDString
|
|
passwdData = encode(SHA256(sp),charMap2)
|
|
salt = entropy
|
|
self.crp = LibCrypto()
|
|
iter = 0x800
|
|
keylen = 0x400
|
|
key_iv = self.crp.keyivgen(passwdData, salt, iter, keylen)
|
|
self.key = key_iv[0:32]
|
|
self.iv = key_iv[32:48]
|
|
self.crp.set_decrypt_key(self.key, self.iv)
|
|
|
|
def decrypt(self, encryptedData):
|
|
cleartext = self.crp.decrypt(encryptedData)
|
|
cleartext = decode(cleartext, charMap2)
|
|
return cleartext
|
|
|
|
|
|
# Locate the .kindle-info files
|
|
def getKindleInfoFiles():
|
|
# file searches can take a long time on some systems, so just look in known specific places.
|
|
kInfoFiles=[]
|
|
found = False
|
|
home = os.getenv('HOME')
|
|
# check for .kinf2018 file in new location (App Store Kindle for Mac)
|
|
testpath = home + '/Library/Containers/com.amazon.Kindle/Data/Library/Application Support/Kindle/storage/.kinf2018'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac kinf2018 file: ' + testpath)
|
|
found = True
|
|
# check for .kinf2018 files
|
|
testpath = home + '/Library/Application Support/Kindle/storage/.kinf2018'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac kinf2018 file: ' + testpath)
|
|
found = True
|
|
# check for .kinf2011 file in new location (App Store Kindle for Mac)
|
|
testpath = home + '/Library/Containers/com.amazon.Kindle/Data/Library/Application Support/Kindle/storage/.kinf2011'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac kinf2011 file: ' + testpath)
|
|
found = True
|
|
# check for .kinf2011 files from 1.10
|
|
testpath = home + '/Library/Application Support/Kindle/storage/.kinf2011'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac kinf2011 file: ' + testpath)
|
|
found = True
|
|
# check for .rainier-2.1.1-kinf files from 1.6
|
|
testpath = home + '/Library/Application Support/Kindle/storage/.rainier-2.1.1-kinf'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac rainier file: ' + testpath)
|
|
found = True
|
|
# check for .kindle-info files from 1.4
|
|
testpath = home + '/Library/Application Support/Kindle/storage/.kindle-info'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac kindle-info file: ' + testpath)
|
|
found = True
|
|
# check for .kindle-info file from 1.2.2
|
|
testpath = home + '/Library/Application Support/Amazon/Kindle/storage/.kindle-info'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac kindle-info file: ' + testpath)
|
|
found = True
|
|
# check for .kindle-info file from 1.0 beta 1 (27214)
|
|
testpath = home + '/Library/Application Support/Amazon/Kindle for Mac/storage/.kindle-info'
|
|
if os.path.isfile(testpath):
|
|
kInfoFiles.append(testpath)
|
|
print('Found k4Mac kindle-info file: ' + testpath)
|
|
found = True
|
|
if not found:
|
|
print('No k4Mac kindle-info/rainier/kinf2011 files have been found.')
|
|
return kInfoFiles
|
|
|
|
# determine type of kindle info provided and return a
|
|
# database of keynames and values
|
|
def getDBfromFile(kInfoFile):
|
|
names = [\
|
|
'kindle.account.tokens',\
|
|
'kindle.cookie.item',\
|
|
'eulaVersionAccepted',\
|
|
'login_date',\
|
|
'kindle.token.item',\
|
|
'login',\
|
|
'kindle.key.item',\
|
|
'kindle.name.info',\
|
|
'kindle.device.info',\
|
|
'MazamaRandomNumber',\
|
|
'max_date',\
|
|
'SIGVERIF',\
|
|
'build_version',\
|
|
'SerialNumber',\
|
|
'UsernameHash',\
|
|
'kindle.directedid.info',\
|
|
'DSN'
|
|
]
|
|
with open(kInfoFile, 'rb') as infoReader:
|
|
filedata = infoReader.read()
|
|
|
|
data = filedata[:-1]
|
|
items = data.split('/')
|
|
IDStrings = GetIDStrings()
|
|
for IDString in IDStrings:
|
|
#print "trying IDString:",IDString
|
|
try:
|
|
DB = {}
|
|
items = data.split('/')
|
|
|
|
# the headerblob is the encrypted information needed to build the entropy string
|
|
headerblob = items.pop(0)
|
|
encryptedValue = decode(headerblob, charMap1)
|
|
cleartext = UnprotectHeaderData(encryptedValue)
|
|
|
|
# now extract the pieces in the same way
|
|
pattern = re.compile(r'''\[Version:(\d+)\]\[Build:(\d+)\]\[Cksum:([^\]]+)\]\[Guid:([\{\}a-z0-9\-]+)\]''', re.IGNORECASE)
|
|
for m in re.finditer(pattern, cleartext):
|
|
version = int(m.group(1))
|
|
build = m.group(2)
|
|
guid = m.group(4)
|
|
|
|
if version == 5: # .kinf2011: identical to K4PC, except the build number gets multiplied
|
|
entropy = str(0x2df * int(build)) + guid
|
|
cud = CryptUnprotectData(entropy,IDString)
|
|
|
|
elif version == 6: # .kinf2018: identical to K4PC
|
|
salt = str(0x6d8 * int(build)) + guid
|
|
sp = GetUserName() + '+@#$%+' + IDString
|
|
passwd = encode(SHA256(sp), charMap5)
|
|
key = LibCrypto().keyivgen(passwd, salt, 10000, 0x400)[:32]
|
|
|
|
# loop through the item records until all are processed
|
|
while len(items) > 0:
|
|
|
|
# get the first item record
|
|
item = items.pop(0)
|
|
|
|
# the first 32 chars of the first record of a group
|
|
# is the MD5 hash of the key name encoded by charMap5
|
|
keyhash = item[0:32]
|
|
keyname = 'unknown'
|
|
|
|
# unlike K4PC the keyhash is not used in generating entropy
|
|
# entropy = SHA1(keyhash) + added_entropy
|
|
# entropy = added_entropy
|
|
|
|
# the remainder of the first record when decoded with charMap5
|
|
# has the ':' split char followed by the string representation
|
|
# of the number of records that follow
|
|
# and make up the contents
|
|
srcnt = decode(item[34:],charMap5)
|
|
rcnt = int(srcnt)
|
|
|
|
# read and store in rcnt records of data
|
|
# that make up the contents value
|
|
edlst = []
|
|
for i in xrange(rcnt):
|
|
item = items.pop(0)
|
|
edlst.append(item)
|
|
|
|
keyname = 'unknown'
|
|
for name in names:
|
|
if encodeHash(name,testMap8) == keyhash:
|
|
keyname = name
|
|
break
|
|
if keyname == 'unknown':
|
|
keyname = keyhash
|
|
|
|
# the testMap8 encoded contents data has had a length
|
|
# of chars (always odd) cut off of the front and moved
|
|
# to the end to prevent decoding using testMap8 from
|
|
# working properly, and thereby preventing the ensuing
|
|
# CryptUnprotectData call from succeeding.
|
|
|
|
# The offset into the testMap8 encoded contents seems to be:
|
|
# len(contents) - largest prime number less than or equal to int(len(content)/3)
|
|
# (in other words split 'about' 2/3rds of the way through)
|
|
|
|
# move first offsets chars to end to align for decode by testMap8
|
|
encdata = ''.join(edlst)
|
|
contlen = len(encdata)
|
|
|
|
# now properly split and recombine
|
|
# by moving noffset chars from the start of the
|
|
# string to the end of the string
|
|
noffset = contlen - primes(int(contlen/3))[-1]
|
|
pfx = encdata[0:noffset]
|
|
encdata = encdata[noffset:]
|
|
encdata = encdata + pfx
|
|
|
|
if version == 5:
|
|
# decode using testMap8 to get the CryptProtect Data
|
|
encryptedValue = decode(encdata,testMap8)
|
|
cleartext = cud.decrypt(encryptedValue)
|
|
|
|
elif version == 6:
|
|
from Crypto.Cipher import AES
|
|
from Crypto.Util import Counter
|
|
# decode using new testMap8 to get IV + ciphertext
|
|
iv_ciphertext = decode(encdata, testMap8)
|
|
# pad IV so that we can substitute AES-CTR for GCM
|
|
iv = iv_ciphertext[:12] + b'\x00\x00\x00\x02'
|
|
ciphertext = iv_ciphertext[12:]
|
|
# convert IV to int for use with pycrypto
|
|
iv_ints = unpack('>QQ', iv)
|
|
iv = iv_ints[0] << 64 | iv_ints[1]
|
|
# set up AES-CTR
|
|
ctr = Counter.new(128, initial_value=iv)
|
|
cipher = AES.new(key, AES.MODE_CTR, counter=ctr)
|
|
# decrypt and decode
|
|
cleartext = decode(cipher.decrypt(ciphertext), charMap5)
|
|
|
|
# print keyname
|
|
# print cleartext
|
|
if len(cleartext) > 0:
|
|
DB[keyname] = cleartext
|
|
|
|
if len(DB)>6:
|
|
break
|
|
except:
|
|
pass
|
|
if len(DB)>6:
|
|
# store values used in decryption
|
|
print u"Decrypted key file using IDString '{0:s}' and UserName '{1:s}'".format(IDString, GetUserName())
|
|
DB['IDString'] = IDString
|
|
DB['UserName'] = GetUserName()
|
|
else:
|
|
print u"Couldn't decrypt file."
|
|
DB = {}
|
|
return DB
|
|
else:
|
|
def getDBfromFile(kInfoFile):
|
|
raise DrmException(u"This script only runs under Windows or Mac OS X.")
|
|
return {}
|
|
|
|
def kindlekeys(files = []):
|
|
keys = []
|
|
if files == []:
|
|
files = getKindleInfoFiles()
|
|
for file in files:
|
|
key = getDBfromFile(file)
|
|
if key:
|
|
# convert all values to hex, just in case.
|
|
for keyname in key:
|
|
key[keyname]=key[keyname].encode('hex')
|
|
keys.append(key)
|
|
return keys
|
|
|
|
# interface for Python DeDRM
|
|
# returns single key or multiple keys, depending on path or file passed in
|
|
def getkey(outpath, files=[]):
|
|
keys = kindlekeys(files)
|
|
if len(keys) > 0:
|
|
if not os.path.isdir(outpath):
|
|
outfile = outpath
|
|
with file(outfile, 'w') as keyfileout:
|
|
keyfileout.write(json.dumps(keys[0]))
|
|
print u"Saved a key to {0}".format(outfile)
|
|
else:
|
|
keycount = 0
|
|
for key in keys:
|
|
while True:
|
|
keycount += 1
|
|
outfile = os.path.join(outpath,u"kindlekey{0:d}.k4i".format(keycount))
|
|
if not os.path.exists(outfile):
|
|
break
|
|
with file(outfile, 'w') as keyfileout:
|
|
keyfileout.write(json.dumps(key))
|
|
print u"Saved a key to {0}".format(outfile)
|
|
return True
|
|
return False
|
|
|
|
def usage(progname):
|
|
print u"Finds, decrypts and saves the default Kindle For Mac/PC encryption keys."
|
|
print u"Keys are saved to the current directory, or a specified output directory."
|
|
print u"If a file name is passed instead of a directory, only the first key is saved, in that file."
|
|
print u"Usage:"
|
|
print u" {0:s} [-h] [-k <kindle.info>] [<outpath>]".format(progname)
|
|
|
|
|
|
def cli_main():
|
|
sys.stdout=SafeUnbuffered(sys.stdout)
|
|
sys.stderr=SafeUnbuffered(sys.stderr)
|
|
argv=unicode_argv()
|
|
progname = os.path.basename(argv[0])
|
|
print u"{0} v{1}\nCopyright © 2010-2016 by some_updates, Apprentice Alf and Apprentice Harper".format(progname,__version__)
|
|
|
|
try:
|
|
opts, args = getopt.getopt(argv[1:], "hk:")
|
|
except getopt.GetoptError, err:
|
|
print u"Error in options or arguments: {0}".format(err.args[0])
|
|
usage(progname)
|
|
sys.exit(2)
|
|
|
|
files = []
|
|
for o, a in opts:
|
|
if o == "-h":
|
|
usage(progname)
|
|
sys.exit(0)
|
|
if o == "-k":
|
|
files = [a]
|
|
|
|
if len(args) > 1:
|
|
usage(progname)
|
|
sys.exit(2)
|
|
|
|
if len(args) == 1:
|
|
# save to the specified file or directory
|
|
outpath = args[0]
|
|
if not os.path.isabs(outpath):
|
|
outpath = os.path.abspath(outpath)
|
|
else:
|
|
# save to the same directory as the script
|
|
outpath = os.path.dirname(argv[0])
|
|
|
|
# make sure the outpath is canonical
|
|
outpath = os.path.realpath(os.path.normpath(outpath))
|
|
|
|
if not getkey(outpath, files):
|
|
print u"Could not retrieve Kindle for Mac/PC key."
|
|
return 0
|
|
|
|
|
|
def gui_main():
|
|
try:
|
|
import Tkinter
|
|
import Tkconstants
|
|
import tkMessageBox
|
|
import traceback
|
|
except:
|
|
return cli_main()
|
|
|
|
class ExceptionDialog(Tkinter.Frame):
|
|
def __init__(self, root, text):
|
|
Tkinter.Frame.__init__(self, root, border=5)
|
|
label = Tkinter.Label(self, text=u"Unexpected error:",
|
|
anchor=Tkconstants.W, justify=Tkconstants.LEFT)
|
|
label.pack(fill=Tkconstants.X, expand=0)
|
|
self.text = Tkinter.Text(self)
|
|
self.text.pack(fill=Tkconstants.BOTH, expand=1)
|
|
|
|
self.text.insert(Tkconstants.END, text)
|
|
|
|
|
|
argv=unicode_argv()
|
|
root = Tkinter.Tk()
|
|
root.withdraw()
|
|
progpath, progname = os.path.split(argv[0])
|
|
success = False
|
|
try:
|
|
keys = kindlekeys()
|
|
keycount = 0
|
|
for key in keys:
|
|
while True:
|
|
keycount += 1
|
|
outfile = os.path.join(progpath,u"kindlekey{0:d}.k4i".format(keycount))
|
|
if not os.path.exists(outfile):
|
|
break
|
|
|
|
with file(outfile, 'w') as keyfileout:
|
|
keyfileout.write(json.dumps(key))
|
|
success = True
|
|
tkMessageBox.showinfo(progname, u"Key successfully retrieved to {0}".format(outfile))
|
|
except DrmException, e:
|
|
tkMessageBox.showerror(progname, u"Error: {0}".format(str(e)))
|
|
except Exception:
|
|
root.wm_state('normal')
|
|
root.title(progname)
|
|
text = traceback.format_exc()
|
|
ExceptionDialog(root, text).pack(fill=Tkconstants.BOTH, expand=1)
|
|
root.mainloop()
|
|
if not success:
|
|
return 1
|
|
return 0
|
|
|
|
if __name__ == '__main__':
|
|
if len(sys.argv) > 1:
|
|
sys.exit(cli_main())
|
|
sys.exit(gui_main())
|