This is the last (and only) challenge in the TryHackMe room Intro to Python.
You'll find a file attached to this task called encoded_flag.txt. Within this file, you will find some encoded information! This is your challenge as follows; Using the base64 library within python. Can you decode this and retrieve the flag? Note this has been encoded a total of 15 times
5 times encoded using base 64
5 times encoded using base 32
5 times encoded using base 16!
It might be tempting to decode it via the route b64 -> b32 -> b16 but think again.
My quick and dirty solution:
#!/usr/bin/env python3 import itertools import base64 filename = "txt" with open(filename) as f: cypher = f.readlines() for _ in itertools.repeat(None, 5): cypher = base64.b16decode(cypher) for _ in itertools.repeat(None, 5): cypher = base64.b32decode(cypher) for _ in itertools.repeat(None, 5): cypher = base64.b64decode(cypher) plaintext = str(cypher, "utf-8") print(plaintext)
Not much to it.
I just did this room to earn to some easy points but at least I learned something.