ESP32 theoretically can provide all of the hardware requirements (WLAN monitor m... | Hacker News

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perillamint on Aug 19, 2019 | parent | context | favorite | on: OpenDrop: An Open Source AirDrop Implementation

ESP32 theoretically can provide all of the hardware requirements (WLAN monitor mode, BLE) but there is one missing part:

> Triggering macOS/iOS receivers via Bluetooth Low Energy. Apple devices start their AWDL interface and AirDrop server only after receiving a custom advertisement via Bluetooth LE (see USENIX paper for details). This means, that Apple AirDrop receivers may not be discovered even if they are discoverable by everyone.

If someone reverse engineer BLE advertisement, yes they can build such hardware.

mstute on Aug 19, 2019 | [–]

The reverse engineering was already done and everything is described our the paper (https://www.usenix.org/conference/usenixsecurity19). We just have not implemented it yet.

Kliment on Aug 19, 2019 | [–]

This has been reversed - see https://hexway.io/blog/apple-bleee/

NKCSS on Aug 19, 2019 | [–]

Thanks, I did not know about this; looks like something fun to play with :)

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