Bugku——web6

又是一道编程题，正好给自己练手

# coding:utf-8
import requests
from base64 import b64decode
s=requests.Session()
a=s.get('http://120.24.86.145:8002/web6/').headers['flag']
flag=b64decode(a)
uflag=str(flag,encoding="utf-8")
key=b64decode(uflag.split(': ')[1])
payload={'margin':key}
r=s.post('http://120.24.86.145:8002/web6/',data=payload)
print(r.text)