Airtag dumper

Simple utility to glitch and dump the nRF52832 firmware on an airtag using cheap hardware. Requirements:

• An airtag
• A bluepill STM32F103 eval board running https://github.com/pd0wm/airtag-glitcher
• A probe-rs compatible debug adapter such as a J-Link

Connect the following pins from the STM to the airtag (`test point numbering):

Function	STM	Airtag
Glitch output	PB7	28 (using an NFET)
Trigger	PB8	34 (1.8V)
Power	PB9	VCC1 + VCC2

Just run cargo run to start the process.

Credits

• Colin O'Flynn for documenting the test points: https://github.com/colinoflynn/airtag-re
• stacksmashing for his video explaining the procedure: https://www.youtube.com/watch?v=_E0PWQvW-14
• LimitedResults for their original research into glitching the NRF52: https://limitedresults.com/2020/06/nrf52-debug-resurrection-approtect-bypass/