The username is supposed to be random.
Beginner Hint
- cJSON is written in C.
- How are strings represented in C, and how is that different from Python?
- Looking through GitHub issues may also give you a hint.
CAuth
Topic: JSONReleased: Jun 14, 2026
A CTF challenge series with fun puzzles to enjoy every day
We regularly publish simple, beginner-friendly or educational CTF challenges!
Solve each challenge within its time window to appear on the leaderboard.
Discussion with friends or AI is welcome (account sharing is prohibited).
Sharing solutions is allowed only after the challenge period has ended.
Try the first challenge
Is this your first CTF? Let's begin by tackling the first challenge released on Daily AlpacaHack.
k0080Want a harder challenge?
Go to B-SIDE