Program Security Challenges


pwn.college Archives.

Archived Shellcode and Memory Corruption challenges Archived: Fall 2025


Write and execute shellcode to read the flag, but all file descriptors (including stdin, stderr and stdout!) are closed.

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Write and execute shellcode to read the flag, but your input is sorted before being executed!

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Write and execute shellcode to read the flag, but your input is sorted before being executed and stdin is closed.

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Overflow a buffer and leak the flag. Be warned, this requires careful and clever payload construction!

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

Overflow a buffer and leak the flag. Be warned, this requires careful and clever payload construction!

Connect with SSH

Link your SSH key, then connect with: ssh hacker@pwn.college

30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

7-Day | 30-Day | All-Time

Rank Hacker Badges Score