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  2. #!/usr/bin/python
  4. # Copyright 2016: dogbert <dogber1@gmail.com>
  5. #
  6. # This program is free software; you can redistribute it and/or modify
  7. # it under the terms of the GNU General Public License as published by
  8. # the Free Software Foundation; either version 2 of the License, or
  9. # (at your option) any later version.
  10. #
  11. # This program is distributed in the hope that it will be useful,
  12. # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. # GNU General Public License for more details.
  15. #
  16. # You should have received a copy of the GNU General Public License
  17. # along with this program; if not, write to the Free Software
  18. # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19. #
  20. #
  21. # This script generates master passwords which can be used to unlock
  22. # the BIOS passwords of most Asus laptops.
  23. # You have to install python for running this script.
  25. import os
  27. def shuffle1(a1, a2):
  28. v3 = 2
  29. for i in range(0, a2):
  30. v4 = v3
  31. v5 = a1
  32. while v5 > 0:
  33. if ( v5 < v4 ):
  34. v5, v4 = v4, v5
  35. v5 %= v4
  36. if (v4 != 1):
  37. v3 += 1;
  38. if ( v3 < a1 ):
  39. continue
  40. return v3
  42. def shuffle2(a1, a2, a3):
  43. if (a1 >= a3):
  44. a1 %= a3
  45. result = a1
  46. if (a2 != 1):
  47. for i in range(0, a2-1):
  48. result = a1 * result % a3;
  49. return result
  51. def initTable(table, i1=11, i2=19, i3=6):
  52. table[0] = chr(i1+ord('0'))
  53. table[1] = chr(i2+ord('0'))
  54. table[2] = chr(i3+ord('0'))
  55. table[3] = "6"
  56. table[4] = "7"
  57. table[5] = "8"
  58. table[6] = "9"
  60. chksum = 0
  61. for i in range(0, 7):
  62. chksum += ord(table[i])
  63. for i in range(7, 32):
  64. chksum = 33676 * chksum + 12345
  65. table[i] = chr(((chksum >> 16) & 0x7FFF) % 43 + ord('0'))
  67. v3 = i1*i2
  68. v4 = shuffle1((i1-1)*(i2-1), i3)
  69. for i in range(0, 32):
  70. table[i] = chr(shuffle2(ord(table[i])-ord('0'), v4, v3))
  72. return table
  74. def calculatePassword(date, table):
  75. date = int(date.replace("-", ""), 16)
  76. chksum = date
  77. password = ""
  78. for i in range(8):
  79. chksum = 33676 * chksum + 12345
  80. index = (chksum >> 16) & 31
  81. pwdC = ord(table[index]) % 36
  82. if pwdC > 9:
  83. password += chr(pwdC + ord('7'))
  84. else:
  85. password += chr(pwdC + ord('0'))
  86. return password
  88. table = initTable(['']*32)
  89. print("Master Password Generator for Asus laptops (system date version)")
  90. print("Copyright (C) 2016 dogbert <dogber1@gmail.com>")
  91. print("")
  92. print("When asked for a password, enter an incorrect password, then press Alt+R. A prompt with the system date will appear, e.g. 2013-12-31")
  93. print("")
  94. print("Please enter the system date: ")
  95. inDate = raw_input().strip().replace('/', '-').replace('.', '-')
  96. password = calculatePassword(inDate, table)
  97. print("")
  98. print("The master password is: " + password)
  99. print("")
  100. print("Please note that the password is encoded for US QWERTY keyboard layouts.")
  101. if (os.name == 'nt'):
  102. print("Press a key to exit...")
  103. raw_input()
  104.  
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