Download the python script, pw.txt and flag.txt.en. cat pw.txt cat flag.txt.en python3 ende.py -d flag.txt.en Enter the password of pw.txt and you get the flag. import sys import base64 from cryptography.fernet import Fernet usage_msg = "Usage: "+ sys.argv[0] +" (-e/-d) [file]" help_msg = usage_msg + "\n" +\ "Examples:\n" +\ " To decrypt a file named 'pole.txt', do: " +\ "'$ python "+ sys.argv[0] +" -d pole.txt'\n" if len(sys.argv) < 2 or len(sys....