One of the ways vulnerability researchers find bugs is with fuzzing. At a high level, fuzzing is the process of generating and mutating random inputs for a given target to crash it. In 2017, I started developing a bare metal hypervisor for the purposes of snapshot fuzzing: fuzzing small subsets of programs from a known, static starting state. This involved working on a custom kernel that could be booted on bare metal. Having not done any operating system development before, I thought this would be a great way to learn new techniques while gaining a new tool for the tool bag. This is the story of the project in the hopes that others could learn from this experience.



Talos Group

Talos Security Intelligence & Research Group