$ ctf42

🇺🇸 L3akCTF

by L3ak 🇺🇸 United States CTFtime flag format L3AK{...}

Beginner-friendly CTF. Challenge difficulty will range from beginner to expert.

10 categories: crypto, web, rev, pwn, forensics, osint, mobile, hardware/rf, hash cracking, and misc.

We have created 60+ awesome challenges for you to enjoy with lots of prizes. Gather your hacking crew and be prepared to battle it out in the BEST CTF competition of the year!

Discord: https://discord.gg/wjSVdt3a7G

Infra sponsored by goo.gle/ctfsponsorship

We'd like to sincerely thank all our sponsors for their generous support and contribution to the prize pool:

Zellic OtterSec haxo.games HackTheBox TryHackMe Altered Security Google (Infra) RET2 Systems CTFguide OffSec Deloitte hex-rays Trail of Bits

Archived challenges by category

Editions

EditionWeight WebPwnReverseCryptoForensicsMiscHardwareMobile Total
2026 34.47 107694104· 50
2025 24.43 8710146324 54
2024 24.43 7777766· 47