Windows Kernel Fuzzing

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Manager – Scaling it up • Second option: To the cloud + Flexible + Cheap (Spot instances/Preemptible) + No fixed costs • However, there is one problem: Labs.mwrinfosecurity.com | © MWR Labs 32
Manager – Scaling it up Labs.mwrinfosecurity.com | © MWR Labs 33
Page 1 and 2: Windows Kernel Fuzzing Nils T2 Info
Page 3 and 4: Introduction - About me • Nils (@
Page 5 and 6: Introduction - Goals Labs.mwrinfose
Page 7 and 8: What are we trying to find? • CVE
Page 9 and 10: Fuzzer Design and Implementation La
Page 11 and 12: Implementation • Everything imple
Page 13 and 14: Test Catalog - Implementation • E
Page 15 and 16: Test Catalog - Example - Short Form
Page 17 and 18: Handle DB Handles are references to
Page 19 and 20: Procedures • Execution of tests i
Page 21 and 22: Procedures - User Mode Callbacks
Page 23 and 24: Logging t0:main:SC_NtGdiCreateMetaf
Page 25 and 26: Reproducing Testcases • We get: t
Page 27 and 28: Repro Run 1. Fuzzer selects current
Page 29 and 30: Architecture - Manager Labs.mwrinfo
Page 31: Manager - Scaling it up • First O
Page 35 and 36: Cloud - Costs ¯\_(ツ)_/¯ Example
Page 37 and 38: Minimising Testcases - Divide & Con
Page 39 and 40: Distributed Minimising • Divide a
Page 41 and 42: Special Pool • Page heap or Addre
Page 43 and 44: Exception Handlers - DISCLAIMER •
Page 45 and 46: Fuzzing with Minidumps • Configur
Page 47 and 48: Results - 26 Bugs reported so far 1
Page 49 and 50: Future Work • Open source the fuz

Windows Kernel Fuzzing

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