it's a binary encoding, "yeah" is positive so 1 while "fuck" is negative so 0 decode it $ python decode.py open "binary" in IDA -> Mach-O file see that's it's just a xor of a ciphertext with a key decrypt it $ python decrypt.py ============================= Awwwww yeahh.. you managed to comprehend the clown-speak... You know, we clowns really arent THAT evil as you might think.. Oh right, a flag is what you want, eh? Here you go: bl4sty1z4cl0wndur1ngw33k3ndz =============================