Here you will find pwnables for beginners. Most of the challenges were created for an internal event at our ctf team OpenToAll. Eventually I grew fond of the idea of hosting them publicly, so this website was born. Some challenges will have multiple variations with progressive difficulty, I hope you enjoy them all.

Upon completion of all challenges you will unlock a new feature: permission to upload your own challenges. From the ADD CHALLENGE menu, upload the source, compiler options along with a PoC. All of the uploads will be moderated and only the creative ones will be chosen.
  • Do not share solutions or flags publicly.
  • Do not brute force (too much).
  • If you find a vulnerability that would impact the website/challenges, don't ruin the fun for everybody, report it to us.
  • Most importantly, use common sense and show good sportsmanship.

Challenges Up

Nov. 13, 2021, 5:09 a.m.

Good news, service has been restored! All challenges are back up and running. Enjoy and have fun.

Challenges Down

Nov. 9, 2021, 7:51 p.m.

Due to the host platform (DigitalOcean) upgrade, all challenges are currently offline. Unfortunately, there's no ETA for the fix, but I'm in constant communication with their support team. I will send an update here and in discord when the issue has been resolved. Thank you


Jan. 1, 2019, 8:05 p.m.

Merry Christmas and Happy New Year!