Modern Odometer Manipulation - collin & oblivion
Colin
DEF CON 33 · Day 1 · Main Stage
In this insightful DEF CON talk, Colin delves into the surprisingly straightforward world of modern odometer manipulation. Challenging the common assumption that digital odometers are tamper-proof, he reveals how readily available devices can prevent mileage from accumulating, effectively devaluing used cars and defrauding warranty and lease providers. The presentation meticulously details the reverse engineering of one such device, exposing its core functionality: a simple modification of a single byte within a specific CAN bus message.
AI review
Solid DEF CON-caliber research that takes a real-world fraud problem and works it all the way down to firmware extraction via power glitching a protected STM32F1. The CAN bus finding itself is almost embarrassingly simple — one byte, no auth — but the hardware attack chain to get there is the actual contribution, and it's legitimate.