mirror of
https://github.com/noDRM/DeDRM_tools.git
synced 2024-11-18 11:56:09 +06:00
433 lines
15 KiB
Python
433 lines
15 KiB
Python
#!/usr/bin/env python
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# K4PC Windows specific routines
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from __future__ import with_statement
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import sys, os, re
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from struct import pack, unpack, unpack_from
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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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import traceback
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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 K4PC 1.9.X
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# use routines in alfcrypto:
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# AES_cbc_encrypt
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# AES_set_decrypt_key
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# PKCS5_PBKDF2_HMAC_SHA1
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from alfcrypto import AES_CBC, KeyIVGen
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def UnprotectHeaderData(encryptedData):
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passwdData = 'header_key_data'
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salt = 'HEADER.2011'
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iter = 0x80
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keylen = 0x100
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key_iv = KeyIVGen().pbkdf2(passwdData, salt, iter, keylen)
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key = key_iv[0:32]
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iv = key_iv[32:48]
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aes=AES_CBC()
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aes.set_decrypt_key(key, iv)
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cleartext = aes.decrypt(encryptedData)
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return cleartext
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# simple primes table (<= n) calculator
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def primes(n):
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if n==2: return [2]
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elif n<2: return []
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s=range(3,n+1,2)
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mroot = n ** 0.5
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half=(n+1)/2-1
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i=0
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m=3
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while m <= mroot:
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if s[i]:
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j=(m*m-3)/2
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s[j]=0
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while j<half:
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s[j]=0
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j+=m
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i=i+1
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m=2*i+3
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return [2]+[x for x in s if x]
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# Various character maps used to decrypt kindle info values.
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# Probably supposed to act as obfuscation
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charMap2 = "AaZzB0bYyCc1XxDdW2wEeVv3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_"
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charMap5 = "AzB0bYyCeVvaZ3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_c1XxDdW2wE"
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# New maps in K4PC 1.9.0
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testMap1 = "n5Pr6St7Uv8Wx9YzAb0Cd1Ef2Gh3Jk4M"
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testMap6 = "9YzAb0Cd1Ef2n5Pr6St7Uvh3Jk4M8WxG"
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testMap8 = "YvaZ3FfUm9Nn_c1XuG4yCAzB0beVg-TtHh5SsIiR6rJjQdW2wEq7KkPpL8lOoMxD"
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class DrmException(Exception):
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pass
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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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# interface with Windows OS Routines
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class DataBlob(Structure):
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_fields_ = [('cbData', c_uint),
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('pbData', c_void_p)]
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DataBlob_p = POINTER(DataBlob)
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def GetSystemDirectory():
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GetSystemDirectoryW = kernel32.GetSystemDirectoryW
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GetSystemDirectoryW.argtypes = [c_wchar_p, c_uint]
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GetSystemDirectoryW.restype = c_uint
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def GetSystemDirectory():
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buffer = create_unicode_buffer(MAX_PATH + 1)
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GetSystemDirectoryW(buffer, len(buffer))
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return buffer.value
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return GetSystemDirectory
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GetSystemDirectory = GetSystemDirectory()
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def GetVolumeSerialNumber():
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GetVolumeInformationW = kernel32.GetVolumeInformationW
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GetVolumeInformationW.argtypes = [c_wchar_p, c_wchar_p, c_uint,
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POINTER(c_uint), POINTER(c_uint),
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POINTER(c_uint), c_wchar_p, c_uint]
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GetVolumeInformationW.restype = c_uint
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def GetVolumeSerialNumber(path = GetSystemDirectory().split('\\')[0] + '\\'):
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vsn = c_uint(0)
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GetVolumeInformationW(path, None, 0, byref(vsn), None, None, None, 0)
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return str(vsn.value)
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return GetVolumeSerialNumber
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GetVolumeSerialNumber = GetVolumeSerialNumber()
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def GetIDString():
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return GetVolumeSerialNumber()
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def getLastError():
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GetLastError = kernel32.GetLastError
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GetLastError.argtypes = None
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GetLastError.restype = c_uint
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def getLastError():
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return GetLastError()
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return getLastError
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getLastError = getLastError()
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def GetUserName():
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GetUserNameW = advapi32.GetUserNameW
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GetUserNameW.argtypes = [c_wchar_p, POINTER(c_uint)]
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GetUserNameW.restype = c_uint
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def GetUserName():
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buffer = create_unicode_buffer(2)
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size = c_uint(len(buffer))
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while not GetUserNameW(buffer, byref(size)):
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errcd = getLastError()
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if errcd == 234:
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# bad wine implementation up through wine 1.3.21
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return "AlternateUserName"
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buffer = create_unicode_buffer(len(buffer) * 2)
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size.value = len(buffer)
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return buffer.value.encode('utf-16-le')[::2]
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return GetUserName
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GetUserName = GetUserName()
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def CryptUnprotectData():
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_CryptUnprotectData = crypt32.CryptUnprotectData
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_CryptUnprotectData.argtypes = [DataBlob_p, c_wchar_p, DataBlob_p,
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c_void_p, c_void_p, c_uint, DataBlob_p]
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_CryptUnprotectData.restype = c_uint
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def CryptUnprotectData(indata, entropy, flags):
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indatab = create_string_buffer(indata)
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indata = DataBlob(len(indata), cast(indatab, c_void_p))
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entropyb = create_string_buffer(entropy)
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entropy = DataBlob(len(entropy), cast(entropyb, c_void_p))
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outdata = DataBlob()
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if not _CryptUnprotectData(byref(indata), None, byref(entropy),
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None, None, flags, byref(outdata)):
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# raise DrmException("Failed to Unprotect Data")
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return 'failed'
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return string_at(outdata.pbData, outdata.cbData)
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return CryptUnprotectData
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CryptUnprotectData = CryptUnprotectData()
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# Locate all of the kindle-info style files and return as list
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def getKindleInfoFiles(kInfoFiles):
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regkey = winreg.OpenKey(winreg.HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\\")
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path = winreg.QueryValueEx(regkey, 'Local AppData')[0]
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# some 64 bit machines do not have the proper registry key for some reason
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# or the pythonn interface to the 32 vs 64 bit registry is broken
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if 'LOCALAPPDATA' in os.environ.keys():
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path = os.environ['LOCALAPPDATA']
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print "searching for kinfoFiles in ", path
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# first look for older kindle-info files
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kinfopath = path +'\\Amazon\\Kindle For PC\\{AMAwzsaPaaZAzmZzZQzgZCAkZ3AjA_AY}\\kindle.info'
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if not os.path.isfile(kinfopath):
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print('No kindle.info files have not been found.')
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else:
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kInfoFiles.append(kinfopath)
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# now look for newer (K4PC 1.5.0 and later rainier.2.1.1.kinf file
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kinfopath = path +'\\Amazon\\Kindle For PC\\storage\\rainier.2.1.1.kinf'
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if not os.path.isfile(kinfopath):
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print('No K4PC 1.5.X .kinf files have not been found.')
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else:
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kInfoFiles.append(kinfopath)
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# now look for even newer (K4PC 1.6.0 and later) rainier.2.1.1.kinf file
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kinfopath = path +'\\Amazon\\Kindle\\storage\\rainier.2.1.1.kinf'
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if not os.path.isfile(kinfopath):
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print('No K4PC 1.6.X .kinf files have not been found.')
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else:
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kInfoFiles.append(kinfopath)
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# now look for even newer (K4PC 1.9.0 and later) .kinf2011 file
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kinfopath = path +'\\Amazon\\Kindle\\storage\\.kinf2011'
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if not os.path.isfile(kinfopath):
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print('No K4PC 1.9.X .kinf files have not been found.')
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else:
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kInfoFiles.append(kinfopath)
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return kInfoFiles
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# determine type of kindle info provided and return a
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# database of keynames and values
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def getDBfromFile(kInfoFile):
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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"]
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DB = {}
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cnt = 0
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infoReader = open(kInfoFile, 'r')
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hdr = infoReader.read(1)
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data = infoReader.read()
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if data.find('{') != -1 :
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# older style kindle-info file
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items = data.split('{')
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for item in items:
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if item != '':
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keyhash, rawdata = item.split(':')
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keyname = "unknown"
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for name in names:
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if encodeHash(name,charMap2) == keyhash:
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keyname = name
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break
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if keyname == "unknown":
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keyname = keyhash
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encryptedValue = decode(rawdata,charMap2)
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DB[keyname] = CryptUnprotectData(encryptedValue, "", 0)
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cnt = cnt + 1
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if cnt == 0:
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DB = None
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return DB
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if hdr == '/':
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# else rainier-2-1-1 .kinf file
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# the .kinf file uses "/" to separate it into records
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# so remove the trailing "/" to make it easy to use split
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data = data[:-1]
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items = data.split('/')
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# loop through the item records until all are processed
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while len(items) > 0:
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# get the first item record
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item = items.pop(0)
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# the first 32 chars of the first record of a group
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# is the MD5 hash of the key name encoded by charMap5
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keyhash = item[0:32]
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# the raw keyhash string is used to create entropy for the actual
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# CryptProtectData Blob that represents that keys contents
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entropy = SHA1(keyhash)
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# the remainder of the first record when decoded with charMap5
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# has the ':' split char followed by the string representation
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# of the number of records that follow
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# and make up the contents
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srcnt = decode(item[34:],charMap5)
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rcnt = int(srcnt)
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# read and store in rcnt records of data
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# that make up the contents value
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edlst = []
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for i in xrange(rcnt):
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item = items.pop(0)
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edlst.append(item)
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keyname = "unknown"
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for name in names:
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if encodeHash(name,charMap5) == keyhash:
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keyname = name
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break
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if keyname == "unknown":
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keyname = keyhash
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# the charMap5 encoded contents data has had a length
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# of chars (always odd) cut off of the front and moved
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# to the end to prevent decoding using charMap5 from
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# working properly, and thereby preventing the ensuing
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# CryptUnprotectData call from succeeding.
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# The offset into the charMap5 encoded contents seems to be:
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# len(contents)-largest prime number <= int(len(content)/3)
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# (in other words split "about" 2/3rds of the way through)
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# move first offsets chars to end to align for decode by charMap5
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encdata = "".join(edlst)
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contlen = len(encdata)
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noffset = contlen - primes(int(contlen/3))[-1]
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# now properly split and recombine
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# by moving noffset chars from the start of the
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# string to the end of the string
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pfx = encdata[0:noffset]
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encdata = encdata[noffset:]
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encdata = encdata + pfx
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# decode using Map5 to get the CryptProtect Data
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encryptedValue = decode(encdata,charMap5)
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DB[keyname] = CryptUnprotectData(encryptedValue, entropy, 1)
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cnt = cnt + 1
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if cnt == 0:
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DB = None
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return DB
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# else newest .kinf2011 style .kinf file
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# the .kinf file uses "/" to separate it into records
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# so remove the trailing "/" to make it easy to use split
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# need to put back the first char read because it it part
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# of the added entropy blob
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data = hdr + data[:-1]
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items = data.split('/')
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# starts with and encoded and encrypted header blob
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headerblob = items.pop(0)
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encryptedValue = decode(headerblob, testMap1)
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cleartext = UnprotectHeaderData(encryptedValue)
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# now extract the pieces that form the added entropy
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pattern = re.compile(r'''\[Version:(\d+)\]\[Build:(\d+)\]\[Cksum:([^\]]+)\]\[Guid:([\{\}a-z0-9\-]+)\]''', re.IGNORECASE)
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for m in re.finditer(pattern, cleartext):
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added_entropy = m.group(2) + m.group(4)
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# loop through the item records until all are processed
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while len(items) > 0:
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# get the first item record
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item = items.pop(0)
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# the first 32 chars of the first record of a group
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# is the MD5 hash of the key name encoded by charMap5
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keyhash = item[0:32]
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# the sha1 of raw keyhash string is used to create entropy along
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# with the added entropy provided above from the headerblob
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entropy = SHA1(keyhash) + added_entropy
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# the remainder of the first record when decoded with charMap5
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# has the ':' split char followed by the string representation
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# of the number of records that follow
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# and make up the contents
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srcnt = decode(item[34:],charMap5)
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rcnt = int(srcnt)
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# read and store in rcnt records of data
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# that make up the contents value
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edlst = []
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for i in xrange(rcnt):
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item = items.pop(0)
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edlst.append(item)
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# key names now use the new testMap8 encoding
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keyname = "unknown"
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for name in names:
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if encodeHash(name,testMap8) == keyhash:
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keyname = name
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break
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# the testMap8 encoded contents data has had a length
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# of chars (always odd) cut off of the front and moved
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# to the end to prevent decoding using testMap8 from
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# working properly, and thereby preventing the ensuing
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# CryptUnprotectData call from succeeding.
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# The offset into the testMap8 encoded contents seems to be:
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# len(contents)-largest prime number <= int(len(content)/3)
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# (in other words split "about" 2/3rds of the way through)
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# move first offsets chars to end to align for decode by testMap8
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# by moving noffset chars from the start of the
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# string to the end of the string
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encdata = "".join(edlst)
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contlen = len(encdata)
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noffset = contlen - primes(int(contlen/3))[-1]
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pfx = encdata[0:noffset]
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encdata = encdata[noffset:]
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encdata = encdata + pfx
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# decode using new testMap8 to get the original CryptProtect Data
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encryptedValue = decode(encdata,testMap8)
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cleartext = CryptUnprotectData(encryptedValue, entropy, 1)
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DB[keyname] = cleartext
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cnt = cnt + 1
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if cnt == 0:
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DB = None
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return DB
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