0x0G is Google’s annual “Hacker Summer Camp” event. Normally this would be in Las Vegas during the week of DEF CON and Black Hat, but well, pandemic rules apply. I’m one of the organizers for the CTF we run during the event, and I thought I’d write up solutions to some of my challenges here.
gRoulette is a simplified Roulette game online. Win enough and you’ll get the flag. The source code is provided, and the entire thing is run over a WebSocket connection to the server.