The inevitable race to hack Apple’s AirTag item tracker has reportedly been won by a German security researcher, who managed to break into the device’s microcontroller and successfully modify its firmware.
Yesss!!! After hours of trying (and bricking 2 AirTags) I managed to break into the microcontroller of the AirTag! 🥳🥳🥳
/cc @colinoflynn @LennertWo pic.twitter.com/zGALc2S2Ph
— stacksmashing (@ghidraninja) May 8, 2021
Thomas Roth, aka Stack Smashing, shared his achievement in a tweet and explained that re-flashing the device’s microcontroller had enabled him to change the URL for Lost Mode, so that it opens his personal website on a nearby iPhone or other NFC-enabled device instead of directly linking to an official Find My web address.
Managing to break into the microcontroller is a crucial hurdle to overcome to if the aim is to further manipulate the device’s hardware. As The 8-Bit notes:
A microcontroller is an integrated circuit (IC) used for controlling devices usually via a microprocessing unit, memory, and other peripherals. According to AllAboutCircuits, “these devices are optimized for embedded applications that require both processing functionality and agile, responsive interaction with digital, analog, or electromechanical components.”
Roth also shared a video comparing a normal AirTag to his modified device.
Built a quick demo: AirTag with modified NFC URL 😎
(Cables only used for power) pic.twitter.com/DrMIK49Tu0
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