CryptoHack/XORprops.py at main · DarkCodeOrg/CryptoHack · GitHub

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#!/usr/bin/env python3
from binascii import unhexlify

def xor_two_str(s1,s2):
    if len(s1) != len(s2):
        raise "XOR EXCEPTION: Strings are not of equal length!"

    return ''.join(format(int(a, 16) ^ int(b, 16), 'x') for a,b in zip(s1,s2))


KEY1 = "a6c8b6733c9b22de7bc0253266a3867df55acde8635e19c73313"

KEY2 = xor_two_str("37dcb292030faa90d07eec17e3b1c6d8daf94c35d4c9191a5e1e", KEY1)
print("[-] KEY2: {}".format(KEY2))

KEY3 = xor_two_str("c1545756687e7573db23aa1c3452a098b71a7fbf0fddddde5fc1", KEY2)
print("[-] KEY3: {}".format(KEY3))

KEY4 = xor_two_str(xor_two_str(KEY1, KEY2), KEY3)
print("[-] KEY4: {}\n".format(KEY4))

FLAG = xor_two_str("04ee9855208a2cd59091d04767ae47963170d1660df7f56f5faf", KEY4)
print("[*] FLAG: {}".format(unhexlify(FLAG)))