https://ctf.bugku.com/challenges/detail/id/236.html
GET /score.php?score=25&ip=124.127.20.138&sign=zMMjU===
失败了
25 MjU=
9999999 OTk5OTk5OQ== zMOTk5OTk5OQ====
http://host:port/score.php?score=9999999&ip=124.127.20.138&sign=zMOTk5OTk5OQ====