Problems

Welcome to the Quantum Authentication System! This advanced system uses quantum-inspired cryptography with AES-CBC encryption …

Web Expert 250 0

A navigation simulator controls an autonomous car that endlessly travels between two points: A and …

Web Hard 150 0

A web challenge that hides the flag on the server filesystem. The application exposes a …

Web Hard 110 5

You are logged in as a guest, but there’s a special “admin dashboard.” The website …

Web Medium 55 4

The login form says: “SQL Injection is blocked!” But is it really? Find a way …

Web Medium 55 4

The website only shows a “Coming soon” page. But real CTF players know how to …

Web Easy 30 5