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CarHacking

Hacking my 2018 Subaru Forester by reading accelerator pedal pressure over the CAN bus!

Project Story

This project was mostly an exercise in reverse engineering, as I had to figure out what CAN packets to send without any documentation on the manufacturer's part. This involved M2Ret (original found here, but cloned here for convenience), a library to read frames off the bus in real-time. Using M2Ret, I would compare logs of the car idling vs when I was pressing the pedal to figure out what the correct packet ID was, as well as some trial-and-error to figure out packets for "tester present" signals to wake up the bus. Lots of fun when I finally got it working!

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My experiments with Macchina M2 with my Subaru

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