pwnable.xyz
Solve beginner pwn challenges and earn the right to add your own
pwnable.xyz is a set of binary exploitation challenges for beginners. Each challenge gives you a program with a bug, and you exploit it to get the flag. Some challenges come in several versions that get harder step by step.
Free · SSH · Beginner
About pwnable.xyz
It trains the basics of pwn: memory bugs, reading binaries and writing exploits. Most challenges were first made for an internal event of a CTF team, and the site says it is aimed at beginners.
You play through the website, which has a leaderboard and user profiles. Once you solve every challenge, you can upload your own, with source and a proof of concept, and the best ones are added. The rules ask you not to share solutions or flags in public.
On Breakpoint since 23 Oct 2026.