Deep dive into #Apple #macOS #drivers: Explore #IOKit and #BSD internals. Understand driver types and #kernel interfaces. Includes practical #RE techniques with #code examples. Enjoy and Merry Christmas!🎄
https://karol-mazurek.medium.com/drivers-on-macos-26edbde370ab?sk=v2%2F8a5bbc18-aae7-4a68-b0dd-bb5ce70b5752

@juandesant @dataandpolitics @glennf

1. The kernel (#xnu) was amalgamation of code that was mostly independent of NeXT. #NeXTSTEP was based on Mach 2.5 & 4.3BSD with an ObjC based DriverKit. xnu was built from #osfmk which was Mach 3.0 and ported to Mac HW as part of the #MkLinux project, a fresh rebase of 4.4BSD-Lites2, and the driver system (#IOKit) was a ground up redesign, despite the existence of DriverKit and NuIO.

2/7