Reverse Engineering a 2012 Toyota Yaris: From OBD-II to Exploit Chain

Fri, 06 Feb 2026 00:00:00 +0000

Chapter 1: Introduction and Laboratory Setup

I picked a 2012 Toyota Yaris for this project mostly because of what it isn’t: it’s not a flagship, it’s not loaded with the kind of aftermarket telematics and OTA update infrastructure that makes modern vehicles a moving target for remote attacks, and it’s cheap enough on the used market that I could buy one, break it, and not lose sleep over it. That’s actually the point. Cars like this one make up a huge chunk of the vehicles still on the road today, and the electronics inside them were designed in an era when “attack surface” mostly meant “whoever plugs a scan tool into the OBD-II port at a dealership.” Nobody was thinking about buffer overflows delivered over a CAN frame. That assumption, it turns out, ages badly, and this post walks through exactly how badly.

CAN-BUS on Prepakis Georgios | Kernelstub | Security Researcher

Reverse Engineering a 2012 Toyota Yaris: From OBD-II to Exploit Chain

Chapter 1: Introduction and Laboratory Setup