$ ctf42

The technique index for CTF.

Stop hunting writeups one by one. Find CTF challenges by the bug behind them, and learn the whole class at once.

2309techniques
21113challenges
491CTFs

Read from the community's writeups. How it works →

Browse by technique

All tags →

Pwn, crypto, web, rev and more, drilled down to the exact technique. Open a domain, expand a family, pick the bug.

Browse by category

Web2434 Pwn3859 Reverse3998 Crypto4387 Forensics1312 Misc3949 OSINT672 Stego14 Blockchain215 Hardware145 Mobile128

Recently added challenges

All challenges →