OOO archive --- DEF CON CTF [ login ]

dc2021q - segnalooo pwn

by anton00b

This was a jeopardy challenge, part of dc2021q. (CTFtime)

This challenge was represented as 🤌
Points: 169
Was solved by: 20 teams

You may spawn the server:

On your laptop
  • Install docker
  • docker pull archiveooo/pub:segnalooo (docker-saved download)
  • docker run -d --name segnalooo archiveooo/pub:segnalooo
  • Local IP: docker inspect segnalooo -f '{{ .NetworkSettings.Networks.bridge.IPAddress }}'
  • Connect to that IP:4321 — Remember to docker rm -f when done.
On your laptop (full source)
  • Install docker and pip install PyYAML coloredlogs
  • git clone
  • cd segnalooo
  • ./spawner --log-level=INFO
  • Connect to the ip:port displayed
Hosted by OOO Right now we're asking players to login first.


x86 assembly is crazy. I hope this challenge will help you understand it a bit better.

line_weight stub


None yet :(
If you wish, you can contribute some.


Spoilers ahead! Code for this challenge is publicly available.