Blether

We've been asked a lot about how it was that the Noobz team was able to resurrect the GTA exploit, for the recent v3.03 PSP downgrader. Well, you need wonder no longer...

The GTA exploit involves a classic buffer overflow attack, basically the original game does not check that the size of the savedata (as indicated within the savedata file) is the size that it expects. So, we can put larger data in there, and overflow the size of the buffer it is using to hold the data - which lets us overwrite some other control variables, ultimately allowing us to cause the game to jump to our code.