商密杯

as fast as you can

点击查看代码

import requests
from base64 import b64decode
s=requests.Session()
a=s.get('http://web.sniperoj.cn:10003/')
bs=a.headers['Get-flag']
flag=b64decode(bs)
payload={'SniperOJ':flag}
r=s.post('http://web.sniperoj.cn:10003/',data=payload)
print(r.text)

md5碰撞

s878926199a和s155964671a

参考：
Sniper-OJ 练习平台多题WriteUp-腾讯云开发者社区-腾讯云