Soundhax is a new primary entrypoint discovered in the "Nintendo 3DS Sound", that loads the homebrew launcher via a .m4a file. The exploit was shown and explained during the 33c3 talk. The exploit relies on a heap overflow in tag processing leads to code execution when a specially- crafted m4a file is loaded by Nintendo 3DS Sound.
Exploits are tested and are confirmed working on USA, EUR and JPN region, works on Old3DS/2DS and New 3DS, on the latest firmware. At the moment KOR, CHN and TWN systems aren't working yet.
How to use?
Download the .m4a file corresponding to your region and model from the official website. Generate an otherapp payload for your model/region/version, and put it at the root of your SD. It has to be renamed "otherapp.bin". Then, simply start the sound application, and load the m4a file. Please note that this doesn't have a 100% success rate, so it may take a few tries.
Official Website
Github
Otherapp payload
Last edited by xtheman,
, Reason: Fixed otherapp payload link.