Hacking [Release] SudokuSTACK - "Carol Vorderman's Sudoku" PSP stack smash exploit

[ChampionLeake]

Hello. I recently got back into reverse engineering and I found this game on my dad's PSVita and ofc dumped it to do some research.
Coming to find out that thins game was vulnerable and I successsfully was able to run unsigned code.

For now, this exploit (in it's current stage)will run a very simple payload which would flash your screen to RED and BLUE. I'll release support for a binary loader and EUR support soon (it'll be fast).

Anyway, I do community feedback to test this exploit on real hardware, since my PSP is broken and my dad loves his PSVita. If you're planning on testing the exploit, please submit an issue on the github page the following:

• PSP/Vita Model
• Firmware
• Using CFW or not
• Digital/UMD Disk
• Your PSP/Vita's region
• Screenshot of the exploit's outcome

Github Repo: https://github.com/ChampionLeake/sudokustack

 

[ChampionLeake]

Before you ask why would I do this when there are better exploits, it's because I actually like doing this for fun and I'm still trying to have a better understand of MIPS Exploitation. Plus, finding vulnerabilities for the PSP are relatively simple so it's something I usually do in my free time to get away from or taking a break from messing with the DSi/3DS.

 

[Fugelmir]

Now if only I could survive the shame of owning Carol Vorderman's sudoku.

Actually, scratch that.

 

[ChampionLeake]

Now if only I could survive the shame of owning Carol Vorderman's sudoku.

Actually, scratch that.

Oh the reasons to own it lol.
Not going lie though, the game is actually interesting.