wsd

pwn x86/x64 heap FCSC 2026 solved on

star star

Description

You loved the HTTP trilogy, so let me introduce wsd: it’s almost the same, but different.

Retrieve the flag from /app/flag.txt.

Files

Author

voydstack

Challenge Instructions

  1. First, download docker-compose.yml:
    curl https://hackropole.fr/challenges/fcsc2026-pwn-wsd/docker-compose.public.yml -o docker-compose.yml
  2. Launch the challenge by executing in the same folder:
    docker compose up
  3. Then, in another console, access the challenge with Netcat:
    nc localhost 4000
⚠️ Important: You must solve the challenge by interacting with the Docker container through the exposed network port. Any other way is not considered valid.

In case you encounter problems, please consult the FAQ.

Flag

Share my success on Fediverse, Twitter, Linkedin, Facebook, or via email.

Submit your solution

You can submit your writeup for this challenge. Read the FAQ to learn how to proceed.

You need to be logged in to submit a writeup.

Writeups

There are no public solutions for this challenge yet, but you can submit yours after getting the flag.