Reverse engineering Bluetooth Low Energy notes #Bluetooth #BLE @ifnotpike
NotPike at bad-radio.solutions writes about taking a commercial piece of gear supporting Bluetooth low energy (BLE) unencrypted communications and reverse engineering the communications.
Kestrel is in the business of building weather and wind meters. The one I’m poking at is a 5500 Fire Weather Meter Pro and was designed for wildland fighters in mind. More or less it’s the same as the other meters and can do some wize bang math to output the Probability of Ignition (POI) and Fine Dead Fuel Moisture… Also you’re paying an extra $200 but you know lol, you’re paying the price for something built for “Emergency Response”. To help keep track of this data Kestrel built a phone app that connects to these devices using BLE. It stores weather measurements and maps|out trends in the weather. Because there’s no real consequences (As far as I can tell) for open communication, the developers didn’t bother implementing crypto / authentication for the BLE link.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.