Microsoft Remote Procedure Call (MS-RPC) is a protocol used within Windows operating systems to enable inter-process communication, both locally and across networks.

Researching MS-RPC interfaces, however, poses several challenges. Manually analyzing RPC services can be time-consuming, especially when faced with hundreds of interfaces spread across different processes, services and accessible through various endpoints.

This post will dive into the new algorithm/method I designed and implemented for fuzzing. It will describe some results and why these results differ from the default fuzzing approach. Apart from the additional implemented features, the tool will be released with this post as well! All security researchers from over the world can now freely use this tool in their research.