49 lines
2.0 KiB
Python
49 lines
2.0 KiB
Python
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#!/usr/bin/env python3
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import hashlib
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### THIS FUNCTION WILL NOT HELP YOU FIND THE FLAG --LT ########################
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def str_xor(secret, key):
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#extend key to secret length
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new_key = key
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i = 0
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while len(new_key) < len(secret):
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new_key = new_key + key[i]
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i = (i + 1) % len(key)
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return "".join([chr(ord(secret_c) ^ ord(new_key_c)) for (secret_c,new_key_c) in zip(secret,new_key)])
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###############################################################################
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flag_enc = open('level4.flag.txt.enc', 'rb').read()
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correct_pw_hash = open('level4.hash.bin', 'rb').read()
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def hash_pw(pw_str):
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pw_bytes = bytearray()
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pw_bytes.extend(pw_str.encode())
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m = hashlib.md5()
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m.update(pw_bytes)
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return m.digest()
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def level_4_pw_check():
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user_pw = input("Please enter correct password for flag: ")
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user_pw_hash = hash_pw(user_pw)
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if( user_pw_hash == correct_pw_hash ):
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print("Welcome back... your flag, user:")
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decryption = str_xor(flag_enc.decode(), user_pw)
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print(decryption)
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return
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print("That password is incorrect")
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level_4_pw_check()
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# The strings below are 100 possibilities for the correct password.
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# (Only 1 is correct)
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pos_pw_list = ["158f", "1655", "d21e", "4966", "ed69", "1010", "dded", "844c", "40ab", "a948", "156c", "ab7f", "4a5f", "e38c", "ba12", "f7fd", "d780", "4f4d", "5ba1", "96c5", "55b9", "8a67", "d32b", "aa7a", "514b", "e4e1", "1230", "cd19", "d6dd", "b01f", "fd2f", "7587", "86c2", "d7b8", "55a2", "b77c", "7ffe", "4420", "e0ee", "d8fb", "d748", "b0fe", "2a37", "a638", "52db", "51b7", "5526", "40ed", "5356", "6ad4", "2ddd", "177d", "84ae", "cf88", "97a3", "17ad", "7124", "eff2", "e373", "c974", "7689", "b8b2", "e899", "d042", "47d9", "cca9", "ab2a", "de77", "4654", "9ecb", "ab6e", "bb8e", "b76b", "d661", "63f8", "7095", "567e", "b837", "2b80", "ad4f", "c514", "ffa4", "fc37", "7254", "b48b", "d38b", "a02b", "ec6c", "eacc", "8b70", "b03e", "1b36", "81ff", "77e4", "dbe6", "59d9", "fd6a", "5653", "8b95", "d0e5"]
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