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https://github.com/noDRM/DeDRM_tools
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CMBDTC 1.1
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CMBDTC
Apprentice Alf
parent
7027ac9b3e
commit
3a83053af9
1 changed files with 63 additions and 40 deletions
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@ -2,7 +2,7 @@
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"""
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Comprehensive Mazama Book DRM with Topaz Cryptography V1.0
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Comprehensive Mazama Book DRM with Topaz Cryptography V1.1
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-----BEGIN PUBLIC KEY-----
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MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDdBHJ4CNc6DNFCw4MRCw4SWAK6
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@ -142,7 +142,7 @@ def MD5(message):
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return ctx.digest()
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#
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# Returns the SHA1 digest of "message"
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# Returns the MD5 digest of "message"
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#
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def SHA1(message):
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@ -229,7 +229,7 @@ def findNameForHash(hash):
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if hash == encodeHash(name, charMap2):
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result = name
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break
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return result
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return name
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#
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# Print all the records from the kindle.info file (option -i)
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@ -297,7 +297,7 @@ def bookReadString():
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#
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def bookReadHeaderRecordData():
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nbValues = ord(bookFile.read(1))
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nbValues = bookReadEncodedNumber()
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values = []
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for i in range (0,nbValues):
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values.append([bookReadEncodedNumber(),bookReadEncodedNumber(),bookReadEncodedNumber()])
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@ -327,7 +327,7 @@ def parseTopazHeader():
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if magic != 'TPZ0':
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raise CMBDTCFatal("Parse Error : Invalid Header, not a Topaz file")
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nbRecords = ord(bookFile.read(1))
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nbRecords = bookReadEncodedNumber()
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bookHeaderRecords = {}
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for i in range (0,nbRecords):
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@ -591,10 +591,11 @@ def generateDevicePID(table,dsn,nbRoll):
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def usage():
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print("\nUsage:")
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print("\nCMBDTC.py [options] bookFileName\n")
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print("-r prints a record indicated in the form name:index (e.g \"img:0\")")
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print("-p Adds a PID to the list of PIDs that are tried to decrypt the book key (can be used several times)")
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print("-r Prints or writes to disk a record indicated in the form name:index (e.g \"img:0\")")
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print("-o Output file name to write records")
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print("-v verbose (can be used several times)")
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print("-i print kindle.info database")
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print("-v Verbose (can be used several times)")
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print("-i Print kindle.info database")
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#
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# Main
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@ -612,9 +613,12 @@ def main(argv=sys.argv):
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recordName = ""
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recordIndex = 0
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outputFile = ""
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PIDs = []
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kindleDatabase = None
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try:
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opts, args = getopt.getopt(sys.argv[1:], "vir:o:")
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opts, args = getopt.getopt(sys.argv[1:], "vir:o:p:")
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except getopt.GetoptError, err:
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# print help information and exit:
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print str(err) # will print something like "option -a not recognized"
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@ -634,43 +638,52 @@ def main(argv=sys.argv):
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outputFile = a
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if o =="-r":
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recordName,recordIndex = a.split(':')
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if o =="-p":
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PIDs.append(a)
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#
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# Read the encrypted database
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#
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kindleDatabase = parseKindleInfo()
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try:
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kindleDatabase = parseKindleInfo()
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except Exception as message:
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if verbose>0:
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print(message)
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if printInfo:
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printKindleInfo()
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if kindleDatabase != None :
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if printInfo:
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printKindleInfo()
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#
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# Compute the DSN
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#
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# Get the Mazama Random number
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MazamaRandomNumber = getKindleInfoValueForKey("MazamaRandomNumber")
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MazamaRandomNumber = getKindleInfoValueForKey("MazamaRandomNumber")
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# Get the HDD serial
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encodedSystemVolumeSerialNumber = encodeHash(str(GetVolumeSerialNumber(GetSystemDirectory().split('\\')[0] + '\\')),charMap1)
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encodedSystemVolumeSerialNumber = encodeHash(str(GetVolumeSerialNumber(GetSystemDirectory().split('\\')[0] + '\\')),charMap1)
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# Get the current user name
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encodedUsername = encodeHash(GetUserName(),charMap1)
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encodedUsername = encodeHash(GetUserName(),charMap1)
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# concat, hash and encode
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DSN = encode(SHA1(MazamaRandomNumber+encodedSystemVolumeSerialNumber+encodedUsername),charMap1)
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if verbose >1:
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print("DSN: " + DSN)
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DSN = encode(SHA1(MazamaRandomNumber+encodedSystemVolumeSerialNumber+encodedUsername),charMap1)
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if verbose >1:
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print("DSN: " + DSN)
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#
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# Compute the device PID
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#
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table = generatePidEncryptionTable()
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devicePID = generateDevicePID(table,DSN,4)
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PIDs.append(devicePID)
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table = generatePidEncryptionTable()
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devicePID = generateDevicePID(table,DSN,4)
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if verbose > 0:
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print("Device PID: " + devicePID)
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if verbose > 0:
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print("Device PID: " + devicePID)
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#
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# Open book and parse metadata
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@ -687,36 +700,46 @@ def main(argv=sys.argv):
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#
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# Get the account token
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kindleAccountToken = getKindleInfoValueForKey("kindle.account.tokens")
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if verbose >1:
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print("Account Token: " + kindleAccountToken)
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if kindleDatabase != None:
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kindleAccountToken = getKindleInfoValueForKey("kindle.account.tokens")
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if verbose >1:
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print("Account Token: " + kindleAccountToken)
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keysRecord = bookMetadata["keys"]
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keysRecordRecord = bookMetadata[keysRecord]
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keysRecord = bookMetadata["keys"]
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keysRecordRecord = bookMetadata[keysRecord]
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pidHash = SHA1(DSN+kindleAccountToken+keysRecord+keysRecordRecord)
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pidHash = SHA1(DSN+kindleAccountToken+keysRecord+keysRecordRecord)
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PID = encodePID(pidHash)
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bookPID = encodePID(pidHash)
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PIDs.append(bookPID)
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if verbose > 0:
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print ("Book PID: " + PID )
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if verbose > 0:
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print ("Book PID: " + bookPID )
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#
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# Decrypt book key
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#
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dkey = getBookPayloadRecord('dkey', 0)
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bookKey = decryptDkeyRecords(dkey,PID)[0]
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if verbose > 0:
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print("Book key: " + bookKey.encode('hex'))
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if recordName != "" :
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extractBookPayloadRecord(recordName,int(recordIndex),outputFile)
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bookKeys = []
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for PID in PIDs :
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bookKeys+=decryptDkeyRecords(dkey,PID)
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if len(bookKeys) == 0 :
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if verbose > 0 :
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print ("Book key could not be found. Maybe this book is not registered with this device.")
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else :
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bookKey = bookKeys[0]
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if verbose > 0:
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print("Book key: " + bookKey.encode('hex'))
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if recordName != "" :
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extractBookPayloadRecord(recordName,int(recordIndex),outputFile)
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if outputFile != "" and verbose>0 :
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print("Wrote record to file: "+outputFile)
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print("Wrote record to file: "+outputFile)
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return 0
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