Cryptography and Encryption

Crypto Identifier – Tool To Uncipher Data Using Multiple Algorithms And Block Chaining Modes

Crypto Identifier - Tool To Uncipher Data Using Multiple Algorithms And Block Chaining Modes
Crypto tool for pentest and ctf : try to uncipher data using multiple algorithms and block chaining modes. Usefull for a quick check on unknown cipher text and key dictionary.
Supported Algorithms :
  • AES
  • ARC2
  • ARC4
  • Blowfish
  • CAST
  • DES
  • DES3
  • XOR

Supported modes :

  • ECB
  • CBC
  • CFB
  • OFB

Usage:

python ./crypto_identifier.py --help
usage: crypto_identifier.py [-h] --input INPUT [--key KEY] [--keys KEYS]
                            [--printable] [--grep GREP]
                            [--algo {ARC4,CAST,AES,XOR,ARC2,DES,Blowfish,DES3}]
                            [--mode {ECB,CBC,CFB,OFB}]

optional arguments:
-h, –help show this help message and exit
–input INPUT, -i INPUT
input string (base64)
–key KEY, -k KEY key string
–keys KEYS, -ks KEYS
keys file
–printable, -p display only printable results
–grep GREP, -g GREP grep string in results
–algo {ARC4,CAST,AES,XOR,ARC2,DES,Blowfish,DES3}, -a {ARC4,CAST,AES,XOR,ARC2,DES,Blowfish,DES3}
cipher algo to use
–mode {ECB,CBC,CFB,OFB}, -m {ECB,CBC,CFB,OFB}
block chaining mode to use

Examples :

Multi ciphers + modes
python ./crypto_identifier.py --input "WpbizgqtUDjD5TV5ELVswFL92ao3T41T" --key secret

CAST128Cipher (ECB) : secret (with IV): 'x95x12(x8d0_O8xc7xb6x1fx9bxc1xbd5xe0'
CAST128Cipher (CBC) : secret (with IV): 'xcfx84xcaC:xf2x1fx00x04S*xe2xd1x08Y '
CAST128Cipher (CFB) : secret (with IV): 'x0fnFx83xd6xbex942xc4xccox11pxa7x81xd5'
CAST128Cipher (OFB) : secret (with IV): 'x0fxfbxd1x01xd2Lxedx18xc1x1c5^xfdvxabxfb'
AESCipher (CFB) : secret (with IV): 'x14xa9%xfdNxa3Fxbfx9b7,[email protected]"xf6xb14Vxfb{Fxc2xcf?'
ARC2 (ECB) : secret (with IV): 'xab4x8acx93  xe6xcax19xe7x15Mx7fxa7xe8'
ARC2 (CBC) : secret (with IV): 'xf1xa2hxadx99x8dpxdetxfcxd2l]xcaxcb('
ARC2 (CFB) : secret (with IV): 'xb8x06rxaax0fXx8cx92)x00xc0xedx0exa8x0exa7'
ARC2 (OFB) : secret (with IV): 'xb87}9{xc8fxa3x99xe4xda?,x01`x11'
DESCipher (ECB) : secret (with IV): 'a DES test case'
DESCipher (CBC) : secret (with IV): ';xb6xa6x8bYx8d$]xb0x91x15x1aqxc6txc0'
DESCipher (CFB) : secret (with IV): 'xc0x06xe6x7flxaex8bvxeexcfx8c[x88x07!x07'
DESCipher (OFB) : secret (with IV): 'xc0x86ugx1fx16xd4)xff0xc3x07-x10&x80'
BlowfishCipher (ECB) : secret (with IV): 'x1eBklxbex14x81x8c9*xaaxeexebW-3'
BlowfishCipher (CBC) : secret (with IV): 'Dxd4x89xa2xb4xb9xd1xb4xfaxcfx9fx97xfbxe2Axf3'
BlowfishCipher (CFB) : secret (with IV): 'x83xf59xea`-xfdd8KNxb0xcfYoxef'
BlowfishCipher (OFB) : secret (with IV): 'x83xd1Vx01xdfxad^tkP5x94xeerxa0x9f'
DES3Cipher (ECB) : secret (with IV): "<x00mlxa0xc1x84xcfx1e,o'xbdxa1xa8"
DES3Cipher (CBC) : secret (with IV): 'fx96x8fxa2xaalxd4dx0cxfbx19x167x08xcdh'
DES3Cipher (CFB) : secret (with IV): 'x8exe2x04x9axaax08xedJxfd%(xa2Fx92x06xa9'
DES3Cipher (OFB) : secret (with IV): 'x8eS+x18xce[xc5x0fx13xc7k8xdexbcxdaF'
ARC4Cipher : secret : 'xb7xa00xd2x88tx86x9exf1.x8exa5xe3Sx99xf7xffxcaxabHxb4xbcIx0f'
CAST128Cipher (ECB) : secret : 'xc7xcbyrxd4xe6xcfxa7x95x12(x8d0_O8xc7xb6x1fx9bxc1xbd5xe0'
CAST128Cipher (CBC) : secret : 'xc7xcbyrxd4xe6xcfxa7xcfx84xcaC:xf2x1fx00x04S*xe2xd1x08Y '
CAST128Cipher (CFB) : secret : 'xc6xa4<xf0>xe3x1dgx0fnFx83xd6xbex942xc4xccox11pxa7x81xd5'
CAST128Cipher (OFB) : secret : 'xc6x8a"?xd5#=x9931;axdaBxd0vxcbQ>6+Lxc1x9d'
AESCipher (CFB) : secret : 'x14xa9%xfdNxa3Fxbfx9b7,[email protected]"xf6xb14Vxfb{Fxc2xcf?'
XORCipher : secret : ")xf3x81xbcoxd9#]xa0x97Prcxd0x0fxb27x89xaaxcfT=xe8'"
ARC2 (ECB) : secret : 'x97 xb6x9bxb5Zx8axdcxab4x8acx93  xe6xcax19xe7x15Mx7fxa7xe8'
ARC2 (CBC) : secret : 'x97 xb6x9bxb5Zx8axdcxf1xa2hxadx99x8dpxdetxfcxd2l]xcaxcb('
ARC2 (CFB) : secret : 'Uxefx12xx0bx88x87*xb8x06rxaax0fXx8cx92)x00xc0xedx0exa8x0exa7'
ARC2 (OFB) : secret : 'Urx86rxfc|2xbfxfbxb0xa2xafxbaxe0xadx8f6x9aYxd9x926x8c{'
DESCipher (ECB) : secret : 'This is a DES test case'
DESCipher (CBC) : secret : 'This is ;xb6xa6x8bYx8d$]xb0x91x15x1aqxc6txc0'
DESCipher (CFB) : secret : '>>xd2xfdxe4xf0!yxc0x06xe6x7flxaex8bvxeexcfx8c[x88x07!x07'
DESCipher (OFB) : secret : '>x1942Hx03x04xd6x9axbd2vx9bx16x19rxb0xe5&x1e(xcex0fx12'
BlowfishCipher (ECB) : secret : 'xacxb6xcbzxe8xd76x91x1eBklxbex14x81x8c9*xaaxeexebW-3'
BlowfishCipher (CBC) : secret : 'xacxb6xcbzxe8xd76x91Dxd4x89xa2xb4xb9xd1xb4xfaxcfx9fx97xfbxe2Axf3'
BlowfishCipher (CFB) : secret : '#Xxe0rSxf0yxfex83xf59xea`-xfdd8KNxb0xcfYoxef'
BlowfishCipher (OFB) : secret : '#?xa1x06Tx7fx98x19x0bx000xf3x1axa9x08.x94x8fxd1ax9cx16xe6xb1'
DES3Cipher (ECB) : secret : "x90xc9xa5xd0x18)'x94<x00mlxa0xc1x84xcfx1e,o'xbdxa1xa8"
DES3Cipher (CBC) : secret : "x90xc9xa5xd0x18)'x94fx96x8fxa2xaalxd4dx0cxfbx19x167x08xcdh"
DES3Cipher (CFB) : secret : 'zp-x9dxb5xe8Rx1ax8exe2x04x9axaax08xedJxfd%(xa2Fx92x06xa9'
DES3Cipher (OFB) : secret : 'zxe1DYx07x17#Y6nxbfxd8x15%xbcx0f<Mx9cxa60Ix9axbe'

Multi ciphers + modes, print only printable results
python ./crypto_identifier.py --input "WpbizgqtUDjD5TV5ELVswFL92ao3T41T" --key secret --printable

DESCipher (ECB) : secret (with IV): a DES test case
DESCipher (ECB) : secret : This is a DES test case

Single cipher / single mode
python ./crypto_identifier.py --input "WpbizgqtUDjD5TV5ELVswFL92ao3T41T" --key secret --algo DES --mode ECB

DESCipher (ECB) : secret (with IV): 'a DES test case'
DESCipher (ECB) : secret : 'This is a DES test case'

using a dictionary as keys
python ./crypto_identifier.py --input "WpbizgqtUDjD5TV5ELVswFL92ao3T41T" --keys ./500-worst-passwords.txt --printable

DESCipher (ECB) : secret (with IV): a DES test case
DESCipher (ECB) : secret : This is a DES test case

Requirements:
Python 2.7 / 3.x

  • Argparse
  • Crypto

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