Why hypervisor for fuzzing

• Advantages:
  • Fuzzing targets are not limited to user-mode
  • Substantially faster than emulators
• Examples
  • Customized hypervisors: KF/x (Xen), kAFL/Nyx (KVM), HyperFuzzer (Hyper-V)
  • Using hypervisor API: What The Fuzz, Rewind, Hyperpom, Snapchange
  • Original hypervisors: FalkVisor, Barbervisor