A perfect example is the script on GitHub. The Oryx configurator for Ergodox and Moonlander keyboards has a security limit: macros can only be five key sequences long. A developer created a hack (a post-processor) that takes the raw Oryx configuration and extends macros to any arbitrary sequence.
This isn't about stealing software. It is about tricking your operating system into recognizing two (or three, or four) standard USB keyboards as separate input devices, allowing you to assign unique macro libraries to each physical keyboard. multi keyboard macros crack