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#!/usr/bin/python
# Copyright 2011: dogbert <dogber1@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
#
# This script generates master passwords which can be used to unlock
# the BIOS passwords of most Fujitsu Siemens laptops (Lifebook, Amilo etc.).
# You have to install python for running this script.
import os
def calcPassword(strHash):
salt = 'Iou|hj&Z'
pwd = ""
for i in range(0, 8):
b = ord(salt[i]) ^ ord(strHash[i])
a = b
a = (a * 0x66666667) >> 32
a = (a >> 2) | (a & 0xC0)
if ( a & 0x80000000 ):
a += 1
a *= 10
pwd += str(b-a)
return pwd
print("Master Password Generator for InsydeH2O BIOS (Acer, HP laptops)")
print("Copyright (C) 2009-2011 dogbert <dogber1@gmail.com>")
print("")
print("Enter three invalid passwords. You will receive a hash code consisting")
print("out of eight numbers ")
print("e.g. 03133610")
print("")
print("Please enter the hash: ")
inHash = raw_input().strip().replace('-', '')
password = calcPassword(inHash)
print("")
print("The master password is: " + password)
print("")
print("Please note that the password is encoded for US QWERTY keyboard layouts.")
if (os.name == 'nt'):
print("Press a key to exit...")
raw_input()