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dc2020q - mooodem reversing pwn

by mborgerson

This was a jeopardy challenge, part of dc2020q.

Points: 139
Was solved by: 33 teams

You may spawn the server:

On your laptop
  • Install docker
  • docker pull archiveooo/pub:mooodem (docker-saved download)
  • docker run -d --name mooodem archiveooo/pub:mooodem
  • Local IP: docker inspect mooodem -f '{{ .NetworkSettings.Networks.bridge.IPAddress }}'
  • Connect to that IP:5000 — Remember to docker rm -f when done.
On your laptop (full source)
  • Install docker and pip install PyYAML coloredlogs
  • git clone https://github.com/o-o-overflow/dc2020q-mooodem-public
  • cd mooodem
  • ./spawner --log-level=INFO
  • Connect to the ip:port displayed
Hosted by OOO Currently unavailable.

Description

Relive the good old days. Dust off your old Bell202 modems and dial in. (48kHz FP 8N1)

Hints

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

There's an author-recommended writeup.

Source

Spoilers ahead! Code for this challenge is publicly available.