CTF Writeups

Cameras are down. Not the endpoint installing their firmwares. Open socket here. Could analyze some outdated firmwares.

Can you try exploiting our shady copy of steghide so that we can convince our managers to update the binary?

This is a CTF challenge called TinyVM. The author is very lazy, not wanting to write a description of the challenge, and the code is directly cloned from https://github[.]com/jakogut/tinyvm.

The key to r00t is ZcZQndRX or was it DE7NUC6l? Wait, it was r2JLegUE. Eh, you’ll figure it out.

I’ve been told that there’s a service running in our infrastructure used by the API team to offload part of their computations. I have a bad feeling about it! Could you take a look at it and make sure it’s safe? There’s a rumour going around that there’s confidential information in some file named flag.txt.

Professor Terence Parr has taught us how to build a virtual machine. Now it’s time to break it!

This challenge was the only PWN challenge of the Hackfest 2020 CTF.