Ehnonymoose

from Crypto.PublicKey import RSA

with open('public_key.pem', 'rb') as f:
	modulus = RSA.importKey(f.read()).n

with open('message.enc', 'rb') as f:
	message = int.from_bytes(f.read(), byteorder='big')

def cube_root(n):
	guess, previous = n, 0