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E.g. if kernelcache has a value like 0x80113771010cbd28 and kernel base is 0xfffffff007004000, that yields: 0x3771000000000000 | ((0xfffffff007004000 + 0x010cbd28) & ~0xffffffffffff) = 0x3771fff0080cfd28
The 0x3771 seems to be the type signature used as the upper 16 bits of context value for virtual call BLRAA (with the lower 48 being the fptr’s address?)
Yes, a virtual method call looks like this in an iPhone11,8 kernel: ldr x8, [x0] ldraa x9, [x8, ...]! movk x8, 0x3771, lsl 48 blraa x9, x8 It's just a real pain decoding these atm, I need to get ARMv8.3 support into radare2 somehow...
I think it’s capstone’s fault: https://github.com/aquynh/capstone/pull/1011 … this should add ARMv8.1/2 support, for ARMv8.3 we “only” have to keep adding the new instructions
don’t reply if you don’t understand it
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