Understanding TOCTTOU in the Windows Kernel Font Scaler Engine

Understanding TOCTTOU in the Windows Kernel Font Scaler Engine

Black Hat via YouTube Direct link

Drawing a Picture

18 of 27

18 of 27

Drawing a Picture

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Understanding TOCTTOU in the Windows Kernel Font Scaler Engine

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  1. 1 Introduction
  2. 2 Background
  3. 3 Time of Use
  4. 4 Why
  5. 5 How
  6. 6 State Structure
  7. 7 Changing Font File
  8. 8 Changing Character Code
  9. 9 Executing VM Instructions
  10. 10 Conclusions
  11. 11 Questions
  12. 12 Data Structure
  13. 13 Memory Allocation
  14. 14 Advanced Exploit Techniques
  15. 15 Understanding TOCTTOU
  16. 16 First Overrated
  17. 17 Summary
  18. 18 Drawing a Picture
  19. 19 FSAC Routine
  20. 20 BoxBone
  21. 21 While Loop
  22. 22 Patch Tuesday
  23. 23 MAF
  24. 24 Log
  25. 25 Precompute
  26. 26 GDI
  27. 27 Graph

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