30 lines
1.3 KiB
Python
30 lines
1.3 KiB
Python
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#!/usr/bin/env python3
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import random
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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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flag_enc = chr(0x15) + chr(0x07) + chr(0x08) + chr(0x06) + chr(0x27) + chr(0x21) + chr(0x23) + chr(0x15) + chr(0x5f) + chr(0x05) + chr(0x08) + chr(0x2a) + chr(0x1c) + chr(0x5e) + chr(0x1e) + chr(0x1b) + chr(0x3b) + chr(0x17) + chr(0x51) + chr(0x5b) + chr(0x58) + chr(0x5c) + chr(0x3b) + chr(0x4c) + chr(0x06) + chr(0x5d) + chr(0x09) + chr(0x5e) + chr(0x00) + chr(0x41) + chr(0x01) + chr(0x13)
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# NOTE: I just commented out the logic, to make the code print the flag directly
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# num = random.choice(range(10,101))
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# print('If ' + str(num) + ' is in decimal base, what is it in binary base?')
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# ans = input('Answer: ')
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# try:
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# ans_num = int(ans, base=2)
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# if ans_num == num:
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flag = str_xor(flag_enc, 'enkidu')
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print('That is correct! Here\'s your flag: ' + flag)
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# else:
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# print(str(ans_num) + ' and ' + str(num) + ' are not equal.')
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# except ValueError:
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# print('That isn\'t a binary number. Binary numbers contain only 1\'s and 0\'s')
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