CTF---Web入门第十六题 天下武功唯快不破

There is no martial art is indefectible, while the fastest speed is the only way for long success.
>>>>>>----You must do it as fast as you can!----<<<<<<

<!-- please post what you find with parameter:key -->

1 import requests
2 import base64
3 r = requests.post('http://ctf5.shiyanbar.com/web/10/10.php')
4 key = r.headers['FLAG']
5 flag = base64.b64decode(key).decode().split(':')[1]
6 para = {'key':flag}
7 r = requests.post('http://ctf5.shiyanbar.com/web/10/10.php',data = para)
8 print r.text