logic on Hackropole

autodiag

Mon, 13 Apr 2026 00:00:00 +0000

This debug port looks promising.

Super Factorizer

Mon, 15 Apr 2024 00:00:00 +0000

I think crypto people are being a bit too clever. I can factor numbers too!

Note: the command to execute the binary server-side is: timeout -k 121 120 stdbuf -o0 /app/super-factorizer.

May the Fifth

Mon, 25 Dec 2023 00:00:00 +0000

A zForth user has, for performance reasons, disabled ASAN and ZF_ENABLE_BOUNDARY_CHECKS, because according to him “setjmp/longjmp is disabled and that is good enough”. Can you prove him wrong by reading the contents of the file containing the flag?

Note: A simpler variant of this challenge is available here: May The Forth.

Bonus Points

Fri, 08 Dec 2023 00:00:00 +0000

Do you want some additional bonus points? Get a score higher than 1000 to unlock the flag.

RsaCE

Fri, 01 Dec 2023 00:00:00 +0000

You have found this binary service which allows to execute signed commands on the remote server. You have also gotten your hands on an example that allows you to execute the id command on the server. Your goal is to get a shell on this server.

Note: This challenge has been made for the finale of FCSC 2020.