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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import with_statement
# kindleforios4key.py
# Copyright © 2013 by Apprentice Alf
# Portions Copyright © 2007, 2009 Igor Skochinsky <[email protected]>
# Revision history:
# 1.0 - Generates fixed PID for Kindle for iOS 3.1.1 running on iOS 4.x
"""
Generate fixed PID for Kindle for iOS 3.1.1
"""
__license__ = 'GPL v3'
__version__ = '1.0'
import sys, os
import getopt
import binascii
# Wrap a stream so that output gets flushed immediately
# and also make sure that any unicode strings get
# encoded using "replace" before writing them.
class SafeUnbuffered:
def __init__(self, stream):
self.stream = stream
self.encoding = stream.encoding
if self.encoding == None:
self.encoding = "utf-8"
def write(self, data):
if isinstance(data,str) or isinstance(data,unicode):
# str for Python3, unicode for Python2
data = data.encode(self.encoding,"replace")
try:
buffer = getattr(self.stream, 'buffer', self.stream)
# self.stream.buffer for Python3, self.stream for Python2
buffer.write(data)
buffer.flush()
except:
# We can do nothing if a write fails
raise
def __getattr__(self, attr):
return getattr(self.stream, attr)
iswindows = sys.platform.startswith('win')
isosx = sys.platform.startswith('darwin')
def unicode_argv():
if iswindows:
# Uses shell32.GetCommandLineArgvW to get sys.argv as a list of Unicode
# strings.
# Versions 2.x of Python don't support Unicode in sys.argv on
# Windows, with the underlying Windows API instead replacing multi-byte
# characters with '?'.
from ctypes import POINTER, byref, cdll, c_int, windll
from ctypes.wintypes import LPCWSTR, LPWSTR
GetCommandLineW = cdll.kernel32.GetCommandLineW
GetCommandLineW.argtypes = []
GetCommandLineW.restype = LPCWSTR
CommandLineToArgvW = windll.shell32.CommandLineToArgvW
CommandLineToArgvW.argtypes = [LPCWSTR, POINTER(c_int)]
CommandLineToArgvW.restype = POINTER(LPWSTR)
cmd = GetCommandLineW()
argc = c_int(0)
argv = CommandLineToArgvW(cmd, byref(argc))
if argc.value > 0:
# Remove Python executable and commands if present
start = argc.value - len(sys.argv)
return [argv[i] for i in
xrange(start, argc.value)]
# if we don't have any arguments at all, just pass back script name
# this should never happen
return [u"mobidedrm.py"]
else:
argvencoding = sys.stdin.encoding
if argvencoding == None:
argvencoding = "utf-8"
return [arg if (type(arg) == unicode) else unicode(arg,argvencoding) for arg in sys.argv]
import hashlib
def SHA256(message):
ctx = hashlib.sha256()
ctx.update(message)
return ctx.digest()
def crc32(s):
return (~binascii.crc32(s,-1))&0xFFFFFFFF
letters = 'ABCDEFGHIJKLMNPQRSTUVWXYZ123456789'
def checksumPid(s):
crc = crc32(s)
crc = crc ^ (crc >> 16)
res = s
l = len(letters)
for i in (0,1):
b = crc & 0xff
pos = (b // l) ^ (b % l)
res += letters[pos%l]
crc >>= 8
return res
def pidFromSerial(s, l):
crc = crc32(s)
arr1 = [0]*l
for i in xrange(len(s)):
arr1[i%l] ^= ord(s[i])
crc_bytes = [crc >> 24 & 0xff, crc >> 16 & 0xff, crc >> 8 & 0xff, crc & 0xff]
for i in xrange(l):
arr1[i] ^= crc_bytes[i&3]
pid = ''
for i in xrange(l):
b = arr1[i] & 0xff
pid+=letters[(b >> 7) + ((b >> 5 & 3) ^ (b & 0x1f))]
return pid
def generatekeys(email, mac):
keys = []
email = email.encode('utf-8').lower()
mac = mac.encode('utf-8').lower()
cleanmac = "".join(c if (c in "0123456789abcdef") else "" for c in mac)
lowermac = cleanmac.lower()
#print lowermac
keyseed = lowermac + email.encode('utf-8')
#print keyseed
keysha256 = SHA256(keyseed)
keybase64 = keysha256.encode('base64')
#print keybase64
cleankeybase64 = "".join(c if (c in "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ") else "0" for c in keybase64)
#print cleankeybase64
pseudoudid = cleankeybase64[:40]
#print pseudoudid
keys.append(pidFromSerial(pseudoudid.encode("utf-8"),8))
return keys
# interface for Python DeDRM
# returns single key or multiple keys, depending on path or file passed in
def getkey(email, mac, outpath):
keys = generatekeys(email,mac)
if len(keys) > 0:
if not os.path.isdir(outpath):
outfile = outpath
with file(outfile, 'w') as keyfileout:
keyfileout.write(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"kindleios{0:d}.pid".format(keycount))
if not os.path.exists(outfile):
break
with file(outfile, 'w') as keyfileout:
keyfileout.write(key)
print u"Saved a key to {0}".format(outfile)
return True
return False
def usage(progname):
print u"Generates the key for Kindle for iOS 3.1.1"
print u"Requires email address of Amazon acccount"
print u"And MAC address for iOS device’s wifi"
print u"Outputs to a file or to stdout"
print u"Usage:"
print u" {0:s} [-h] <email address> <MAC address> [<outfile>]".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 © 2013 Apprentice Alf".format(progname,__version__)
try:
opts, args = getopt.getopt(argv[1:], "h")
except getopt.GetoptError, err:
print u"Error in options or arguments: {0}".format(err.args[0])
usage(progname)
sys.exit(2)
for o, a in opts:
if o == "-h":
usage(progname)
sys.exit(0)
if len(args) < 2 or len(args) > 3:
usage(progname)
sys.exit(2)
if len(args) == 3:
# save to the specified file or folder
getkey(args[0],args[1],args[2])
else:
keys = generatekeys(args[0],args[1])
for key in keys:
print key
return 0
def gui_main():
try:
import Tkinter
import Tkconstants
import tkMessageBox
except:
print "Tkinter not installed"
return cli_main()
class DecryptionDialog(Tkinter.Frame):
def __init__(self, root):
Tkinter.Frame.__init__(self, root, border=5)
self.status = Tkinter.Label(self, text=u"Enter parameters")
self.status.pack(fill=Tkconstants.X, expand=1)
body = Tkinter.Frame(self)
body.pack(fill=Tkconstants.X, expand=1)
sticky = Tkconstants.E + Tkconstants.W
body.grid_columnconfigure(1, weight=2)
Tkinter.Label(body, text=u"Amazon email address").grid(row=0)
self.email = Tkinter.Entry(body, width=40)
self.email.grid(row=0, column=1, sticky=sticky)
Tkinter.Label(body, text=u"iOS MAC address").grid(row=1)
self.mac = Tkinter.Entry(body, width=40)
self.mac.grid(row=1, column=1, sticky=sticky)
buttons = Tkinter.Frame(self)
buttons.pack()
button = Tkinter.Button(
buttons, text=u"Generate", width=10, command=self.generate)
button.pack(side=Tkconstants.LEFT)
Tkinter.Frame(buttons, width=10).pack(side=Tkconstants.LEFT)
button = Tkinter.Button(
buttons, text=u"Quit", width=10, command=self.quit)
button.pack(side=Tkconstants.RIGHT)
def generate(self):
email = self.email.get()
mac = self.mac.get()
if not email:
self.status['text'] = u"Email not specified"
return
if not mac:
self.status['text'] = u"MAC not specified"
return
self.status['text'] = u"Generating..."
try:
keys = generatekeys(email, mac)
except Exception, e:
self.status['text'] = u"Error: (0}".format(e.args[0])
return
self.status['text'] = ", ".join(key for key in keys)
root = Tkinter.Tk()
root.title(u"Kindle for iOS PID Generator v.{0}".format(__version__))
root.resizable(True, False)
root.minsize(300, 0)
DecryptionDialog(root).pack(fill=Tkconstants.X, expand=1)
root.mainloop()
return 0
if __name__ == '__main__':
if len(sys.argv) > 1:
sys.exit(cli_main())
sys.exit(gui_main())
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