You Have a Kernel Read/Write. Not Enough! How to Extract Offsets from XNU Kernelcaches
Summary
The article presents a repeatable methodology for extracting field offsets from stripped XNU kernelcaches on iOS, detailing cross-referencing with source, anchor points, accessor patterns, iterators, constructors, syscalls, zone validation, pointer chains, and hash tables. It emphasizes understanding layout despite symbol stripping and highlights practical techniques and caveats for researchers.