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Explore the reverse engineering of a modern odometer manipulation device in this DEF CON 33 conference talk. Learn how researchers acquired and analyzed a commercial tool claiming to support 53 different car brands, beginning with a complete hardware teardown to understand its installation between the instrument panel cluster and vehicle systems. Discover the process of extracting internal flash memory from a locked STM32 microcontroller using open source exploits, then follow the detailed reverse engineering of the extracted binary to uncover how the device intercepts and rewrites CAN bus messages to alter odometer readings. Understand the broader implications of odometer fraud in the automotive industry and examine detection methods that can identify evidence of manipulation even after the device has been removed from the vehicle.
