# Debugging [Nightmare](https://guyinatuxedo.github.io/index.html) is a "binary exploitation / reverse engineering course based around ctf challenges" which seems like a great foray into debugging and lowerlevel code execution. Features assembly intro! gdb is extremely handy for debugging programs. Use it. https://everythingsysadmin.com/dumb-things-to-check.html -> handy troubleshooting list