Challenge categories

Crypto — 19 challenges
Attacks against bad implementations of well-known cryptosystems, poorly designed algorithms, side-channels...

Forensics — 3 challenges
Digital investigations: dump analysis, data recovery, malware analysis

Misc — 6 challenges
Hax that doesn't fit anywhere else, mostly because it's not HTTP!

Pwning — 44 challenges
Binary exploitation on user programs and against the kernel: from basic buffer overflows to advanced ROP and heap exploits.

Reversing — 9 challenges
Reverse Engineering of binaries and bypass anti-RE techniques

Web — 17 challenges
Attacks against Web applications, for both client-side and server-side vulnerabilities

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