Back then a cousin and I found a cheat exe on some BBS that gave you infinite ammo in Doom 2, it also gave us a virus (Michaelangelo, I think?). My dad somehow disassembled the exe to remove the virus so we could keep our infinite ammo cheat. I'm spoiled - I would struggle to do the same without online resources.
Got it right!
Back then cheat codes were hard to find, especially if you found doom on shareware floppies and didn’t have BBS access to the DooM FAQ.
And a couple of years later we had dlh.net