11/13/2022 0 Comments Ida pro 7.5 github![]() ![]() Since AppleKeyStoreUserClient::registerNotificationPort is a non-static C++ method, we know that For example,Ĭonsider the following fragment of assembly from AppleKeyStoreUserClient: FFFFFFF0069D97C0 AppleKeyStoreUserClient::registerNotificationPort(AppleKeyStoreUserClient _hidden *this, ipc_port *, unsigned int, unsigned int)įFFFFFF0069D97C0 _ZN23AppleKeyStoreUserClient24registerNotificationPortEP8ipc_portjjįFFFFFF0069D97C4 TBZ W8, #4, loc_FFFFFFF0069D9800įFFFFFF0069D97D0 B.NE loc_FFFFFFF0069D97FC Memory region and track what parts of the memory region are accessed by the code. The implementation is available in theĪll this particular analysis does is take a set of registers and corresponding offsets into a Project it seemed easiest just to write a basic one myself. There already exist manyĭata flow analysis frameworks, some of them quite sophisticated, but for the purposes of this The key feature underlying class reconstruction is data flow analysis. ![]() Of the class layout can greatly aid in reverse engineering. Much crucial information has been lost during compilation. No such analysis can be perfect, of course, as The offsets and sizes of many of the class’s fields. Reads memory from the implicit this parameter (argument 0), it should be possible to reconstruct The idea is simple: based on how a virtual method IOKit classes using observed access patterns. The reason I started ida_kernelcache to begin with was to automatically determine the fields of However, I believe it’s now time to release this work Kernelcaches in search of vulnerabilities. I actually implemented this feature last November, and I’ve been using it since then to reverse What I’ve found to be the most useful part of the toolkit thus far: automatically reconstructingĬlass layouts and C structs via data flow analysis. Segment names, automatically converting some pointers into offsets, symbolicating virtual methodsĪnd virtual method tables, and automatically renaming stub functions in kexts. My goal was to make working with kernelcaches in IDA a bit easier by improving Last October I released ida_kernelcache, an IDA Pro toolkit for analyzing iOS Reconstructing C++ classes in the iOS kernelcache using IDA Pro ![]()
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