picoCTF 2025

pwn - Echo Valley

The echo valley is a simple function that echoes back whatever you say to it.But how do you make it...

pwn - Handoff

Vulnerability: stack buffer overflow

pwn - hash only 12

Here is a binary that has enough privilege to read the content of the flag file but will only let...

pwn - PIE TIME 12

Can you try to get the flag? Beware we have PIE! | Can you try to get the flag? I'm...

Vulnerability: format string bug