You reverse-engineer the system menu to load some own unsigned code.
Read here: http://en.wikipedia.org/wiki/Reverse_engineering
It´s applicable to cheating in games, a presentational tutorial:
https://www.youtube.com/watch?v=rpMpmm0nlEM
Hope you got an idea on how things are achieved.
Read here: http://en.wikipedia.org/wiki/Reverse_engineering
It´s applicable to cheating in games, a presentational tutorial:
https://www.youtube.com/watch?v=rpMpmm0nlEM
Hope you got an idea on how things are achieved.