rev: add a few more challenges

rev/unpackme_py/unpackme.flag.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i python3 -p python3 python3Packages.cryptography
+
+import base64
+from cryptography.fernet import Fernet
+
+payload = b'gAAAAABkzWGWvEp8gLI9AcIn5o-ahDUwkTvM6EwF7YYMZlE-_Gf9rcNYjxIgX4b0ltY6bcxKarib2ds6POclRwCwhsRb1LOXVt4Q3ePtMY4BmHFFZlIHLk05CjwigT7hiI9p3sH9e7Cpk1uO90xbHbuy-mfi3nkmn411aBgwxyWpJvykpkuBIG_nty6zbox3UhbB85TOis0TgM0zG4ht0-GUW4wTq2_5-wkw3kV1ZAisLJHzF-Z9oLMmwFZU0UCAcHaBTGDF5BnVLmUeCGTgzVLSNn6BmB61Yg=='
+
+key_str = 'correctstaplecorrectstaplecorrec'
+key_base64 = base64.b64encode(key_str.encode())
+f = Fernet(key_base64)
+plain = f.decrypt(payload)
+
+print(plain.decode())
+# exec(plain.decode())