有些網站可能掛了。。。。。

www.ichunqiu.com

www.wechall.net/challs

http://canyouhack.it/

https://microcorruption.com/login

http://smashthestack.org

http://overthewire.org/wargames/         一些writeup http://drops.wooyun.org/author/litao3rd

https://exploit-exercise.com/

http://pwnable.kr/play.php      PWN類題目

http://ctf.moomsos.com/pentest/index.php    Web漏洞靶場

https://xss.haozi.me/   XSS

http://redtiger.labs.overthewire.org/     SQL

不常見的工具：https://github.com/truongkma/ctf-tools

https://github.com/Plkachu/v0lt

https://github.com/zardus/ctf-tools

https://github.com/TUCTF/Tools