Reversing an M32C Firmware - Lessons Learned from Playing with an Uncommon Architecture

Explore the intricacies of reversing firmware on an unfamiliar architecture in this 25-minute conference talk from Recon 2022. Delve into the journey of tackling an M32C firmware from a medical device, focusing on the approach and lessons learned rather than specific device details. Gain insights into handling unknown embedded architectures, including interrupt handlers, special purpose registers, and flash handling code. Examine low-level microcontroller concepts and M32C assembly, providing valuable pointers for hardware hackers venturing beyond Linux-based systems. Learn from Philippe Laulheret, a Senior Security Researcher at Trellix, as he shares his experience and expertise in reverse engineering and vulnerability research on complex systems.