![]() IoSpy and IoAttack are tools that perform IOCTL and WMI fuzz tests on kernel-mode drivers. You can also use the Kernel synchronization delay fuzzing that is included with Driver Verifier. Here are a few to consider.ĭF - Fuzz random IOCTL test (Reliability)ĭF - Fuzz zero length buffer FSCTL test (Reliability)ĭF - Fuzz random FSCTL test (Reliability) Previously, he spent five years at Unit 8200, as an officer and team leader of security researchers.IoSpy and IoAttack are no longer available in the WDK after Windows 10 Version 1703.Īs an alternative to these tools, consider using the fuzzing tests available in the HLK. Gal Kristal is a Senior Security Researcher at SentinelOne who specializes in Offensive Security. We’ll share how we drastically improved the performance of pe-afl and demonstrate Kernel mode fuzzing. ![]() ![]() Then, we’ll discuss special considerations for instrumenting 64-bit binaries and the Windows Kernel. This talk will briefly cover the existing solutions for instrumenting PE files and how peafl64 compares to them. peafl64 is the most comprehensive and efficient static instrumentation tool for Windows binaries that’s publicly available to the security research community today. It enables both Kernel mode (using kAFL) and User mode (using WinAFL) binary-level fuzzing. We’re releasing peafl64 – a static instrumentation tool for 64-bit PEs expanding on pe-afl. Regarding specifically 64-bit Windows Kernel drivers, there was no tool that supported static instrumentation of those, up until now. Code coverage is typically achieved using dynamic or static instrumentation the latter is preferred for its superior performance. Statically instrumenting 64-bit Windows binaries with peafl64įuzzing has long been used to search for vulnerabilities in complex binaries, and it works best when coupled with code coverage.
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