#UMASS_CTF_2022 #!/usr/bin/env python3 # # Polymero # # Imports import os # Local imports with open('flag.txt','rb') as f: FLAG = f.read() f.close() def bytes_to_mat(x): assert len(x) == 32 bits = list('{:0256b}'.format(int.from_bytes(x,'b…

#zh3ro_CTF_2021 # from secret import flag def ROTL(value, bits, size=32): return ((value % (1 << (size - bits))) << bits) | (value >> (size - bits)) def ROTR(value, bits, size=32): return ((value % (1 << bits)) << (size - bits)) | (value >…