DesperateProgrammer/BrokenPit

A primary exploit for the Nintendo DSi Camera!

BrokenPitv0

BrokenPit is a primary exploit for the "Nintendo DSi Camera"!
This exploit's PoC will demonstrate a change of color splash screens from the touch screen.

Exploit/Vulnerability Detail:

Buffer overflow via unchecked header size
The Camera app loads the pit.bin file from the SD card to load images. However, the header size at offset 0x16 is unchecked, so a big enough header size value can exceed boundaries and cause the buffer to overwrite and jump to unsigned code.

Requirements:

• Any Nintendo DSi/3DS System on any System Firmware.
• Regions supported: USA, EUR, and JPN (Unsure about other regions).
• An SD Card (Any size).

Installation:

1. Download the "BrokenPitv0.zip" archive from the latest release and read the instructions from the `instructions.txt" file.

Triggering the BrokenPit Exploit:

1. Tap the SD Card option on the top right of your touch screen.
2. Tap Album.

FAQ:

1. Q: What's the purpose of this exploit?
   • A: To run simple unsigned custom code from the DSi Camera App and to understand the process of shutterbug2000's MemoryPit.
2. Q: My DSi crashes when I attempt to trigger the exploit.
   • A: You most likely have a different version of the DSi Camera Application which affect the addresses to run a payload. You can try shutterbug2000's MemoryPit or zoogie's edition to launch into the NDS-HBMenu.
3. Q: How do I uninstall this exploit?
   • A: Delete the pit.bin file from your SD Card that's located at private/ds/app/484E494A.

Special Thanks:

• zoogie: Assisting me to locate and calculate the WRAM Address for the pointers
• shutterbug2000: Originally Exploited the DSi Camera System Applet (MemoryPit)
• DSiBrew.org: Documentation of the pit.bin file. (https://dsibrew.org/wiki/Private/ds/app/484E94*/pit.bin)