Switch NFC Proxy

This repository provides a simple script to proxy Joy-Con <-> Switch communication with ability to spoof data read from NFC reader.

Installation

• Clone this repository
• Install dependencies

sudo pip3 install nxbt crc8

• Run proxy.py script. Check comment in proxy.py for full usage procedure.

sudo python3 proxy.py --mac XX:XX:XX:XX:XX:XX --nfc-data /path/to/data.bin

Getting MAC address

To obtain MAC address of right Joy-Con use following command:

bluetoothctl scan on

Now press pairing button (tiny button below lights) and wait for Joy-Con to show up on the list. Press Ctrl-C to terminate scanning process.

Credits

• dekuNukem/Nintendo_Switch_Reverse_Engineering
• Brikwerk/nxbt - this repository is based on this amazing controller emulation effort, original proxy.py was taken from there
• mart1nro/joycontrol - NFC emulation logic has been taken from this project

License

This project is licensed under GPLv3 because of dependency on joycontrol.

Limitation/known issues

• Please keep in mind this whole project is just a Proof of Concept based on a simple idea of gluing nxbt with pieces of joycontrol. Don't expect high coding standards from it ;)
• IrNfcMcu - contains a lot of magic constants and logic. I used it as a blackbox because it "just works" but ideally this should be removed from the project and replaced with a component written from a scratch. Unfortunately I would need some real NFC communication dumps for research and I don't have any right now. If you would like to contribute to this project this is a great way to start.