iOS 10 Kernel Heap Revisited

iOS 10 Kernel Heap Revisited

Hack In The Box Security Conference via YouTube Direct link

Intro

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1 of 23

Intro

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iOS 10 Kernel Heap Revisited

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  1. 1 Intro
  2. 2 Kernel Zone Heap Allocator
  3. 3 Zone Allocator Usage
  4. 4 Zone Memory (Pages)
  5. 5 Dynamic Length Allocations?
  6. 6 Kernel Heap Allocation Debugging (1)
  7. 7 Zone Structure
  8. 8 Free Memory Blocks
  9. 9 How attackers abused the iOS 5 Zone Allocator
  10. 10 IOS & Heap Cookie Leak Protection
  11. 11 Zone Pagelist Feature
  12. 12 Zone Page Meta Data
  13. 13 Zone Pagelists
  14. 14 Allocation under Page Lists
  15. 15 Freeing under Page Lists
  16. 16 Was there a memory corruption? Yes? Continue!
  17. 17 Less Frequent Large Block Poisoning
  18. 18 Zone Page Metadata
  19. 19 Fored Zomestructure Array
  20. 20 new zone metadata region
  21. 21 page freelists
  22. 22 Metadata vs. Wrong Zone Frees
  23. 23 Wrappers and Metadata

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