Super Mario Bros.

Arbitrary Code Execution is in Another Castle!

When one buys a computer, it should be expected that the owner can run any code on it that they want. Often this isn’t the case, though, as most modern devices are sold with locked bootloaders or worse. Older technology is a little bit easier to handle, however, but arbitrary code execution on something like an original Nintendo still involves quite a lot of legwork, as [Retro Game Mechanics Explained] shows with the inner workings of Super Mario Brothers 3.

While this hack doesn’t permanently modify the Nintendo itself, it does allow for arbitrary code execution within the game, which is used mostly by speedrunners to…