A CTFd King of the Hill binary.
A small binary to check which CTFd user owns a file.
The binary is intended to be run on a secure machine, from where it can check mounted network-shares from a compromised machine.
It will get the contents of the flag-file and award the owning user with a preconfigured award.
This is a proof-of-concept.
Lots of stuff could be done better, use at your own risk and shame…