Created
November 25, 2018 23:33
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#!/usr/bin/env python | |
''' | |
This script will XOR the data. | |
The key and the payload must be in hex format | |
The script is simplified from my_xor.py | |
''' | |
import binascii | |
enc = "f155f55cf610ee5feb5cfd" | |
key = "9930" | |
dec = "" | |
n = 2 | |
## if key is single byte | |
if ( (len(key) / 2) == 1): | |
m = 0 | |
for i in range(0, len(enc), n): | |
dec += hex(int(enc[i:i+n], 16) ^ int(key[m:m+n], 16)).replace('0x', '').zfill(2) | |
## I put zifll because I didn't want to lose the leading zero in hex | |
## eg) 0xd -> 0x0d (this is what I want) | |
else: | |
m = 0 | |
for i in range(0, len(enc), n): | |
dec += hex(int(enc[i:i+n], 16) ^ int(key[m:m+n], 16)).replace('0x', '').zfill(2) | |
m += n | |
## if the key gets to end, set the key back to beginning. | |
if (m >= len(key)): | |
m = 0 | |
print(dec) | |
#dec = dec.replace('0d0d', '0d0a') ## not sure why but when hex contains '0d0d' it doesn't print properly so replacing to '0d0a' | |
#print(binascii.unhexlify(dec)) | |
print(repr(binascii.unhexlify(dec))) | |
print("") |
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