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msFuzz is a coverage-guided fuzzer for Windows kernel drivers that utilizes Intel PT and leverages constraint and dependency analysis to guide fuzzing.

msFuzz

msFuzz is a coverage-guided fuzzer for Windows kernel drivers that utilizes Intel PT and leverages constraint and dependency analysis to guide fuzzing.

CI

Feature

  • msFuzz uses Intel PT to achieve code coverage.
  • The msFuzz follows an AFL-like design and can detect semi-stateful bugs.
  • msFuzz is a well-designed fuzzer based on Nyx-Fuzzer/kAFL and Redqueen.
  • Designed to find bugs for windows Driver that interact with user using DeviceIoControl.
    Fuzz Success

Requirements

  • Intel Skylake or later: The setup requires a Gen-6 or newer Intel CPU (for
    Intel PT) and adequate system memory (~2GB RAM per CPU)

  • Patched Host Kernel: A modified Linux host kernel will be installed as part
    of the setup. Running kAFL inside a VM may work starting IceLake or later CPU.

  • Ubuntu: The installation and tutorials are
    tested for recent Ubuntu 20.04.6 LTS.

Our Achievements

  • 100+ Security Bugs in 100 days
  • 20+ EoP (Elevation of Privilege)

How to use

Languages

Makefile73.2%C16.1%Jinja10.7%

Contributors

Latest Release

1.0vDecember 14, 2023
MIT License
Created November 6, 2023
Updated March 8, 2026