Crackmes.one

@CrackmesOne

World's largest crackmes (reverse engineering challenges) collection with solutions. Since 2017. Also Xusheng's personal account

crackmes.one

Joined January 2026

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Crackmes.one
@CrackmesOne
21h
Flare-on 13 starts in 1 day and you can already sign up for it: flare-on13.ctfd.io. Apparently they forgot to add a link to it so finding the URL become the 0th challenge. Also I hope they get the time zone correct this time
Crackmes.one
@CrackmesOne
Aug 11
Flare-on 13 announced! flare-on.com
Crackmes.one
@CrackmesOne
Sep 23
I just added a scoreboard to crackmes.one! crackmes.one/scoreboard
crackmes.one
Crackmes.one
Crackmes.one
@CrackmesOne
Sep 22
You can now earn points for solving a crackme! Check out the very first one which gives you 200 points after a solve: crackmes.one/crackme/6ab1e2…. You can also specify a flag for crackmes you create now (must be unique), so that players can get the point after solving it
crackmes.one
jeffli6789's Orbit Fold
Recover the flag accepted by this standalone Linux x86-64 crackme. You can earn 200 points solving this!
Crackmes.one
@CrackmesOne
Sep 21
AI also solved dozens of longstanding crackmes on crackmes.one recently lol
OpenAI
@OpenAI
Sep 21
We’re working with an independent advisory group of mathematicians to help OpenAI responsibly share advances in AI and mathematics. The group will advise on how we assess and communicate new mathematical results, uphold academic and professional standards, and build tools that
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Crackmes.one
@CrackmesOne
Sep 20
I would not be surprised that the next AI breakthrough is agents hack outside of this world and find a new one (e.g., the matrix). I would be surprised if OpenAI etc are not attempting it…