#0ctf2021finals from hashlib import sha256 from secret import flag global p, alphabet p = 71 alphabet = '=0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$!?_{}<>' flag = flag.lstrip('flag{').rstrip('}') assert len(flag) == 2…