FavByte
Notes from challenges I did @ https://cryptohack.org.
from pwn import xor
KEY1x = bytes.fromhex("73626960647f6b206821204f21254f7d694f7624662065622127234f726927756d")
count = 0
while count < 55:
count += 1
try:
possibleKey = (xor(KEY1x, count)).decode()
if possibleKey.startswith("crypto"):
print(possibleKey)
except:
print("An exception occurred wtih ", str(count))