jmpews
commented
2 years ago - is the function signature special? ex: x8 used for struct param?
- which interface using? DobbyHook or DobbyInstrument?
iOSPrincekin @.***> 于2022年8月2日周二 19:38写道：
env:iOS13.3.1 arm64 iphone6s Xcode13.3.1 Hi: I hook a method that uses the x8 register in its body, let's call it method_A, I hook it using DobbyX by replacing it with the new function dobby_method_A, in the dobby_method_A body disassembler, it also uses the x8 register, so when back to method_A, its x8 register had changed, so it case error!
I don't know why method_A and its replace method use the same x8 register, I read and debug the two methods disassembler, and it shows that not set the original x8 register value back, It's possible the method_A does something protect? how to solve it?
any help would be appreciated!
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iOSPrincekin
codingsf
env:iOS13.3.1 arm64 iphone6s Xcode13.3.1 Hi: I hook a method that uses the x8 register in its body, let's call it method_A, I hook it using DobbyX by replacing it with the new function dobby_method_A, in the dobby_method_A body disassembler, it also uses the x8 register, so when back to method_A, its x8 register had changed, so it case error!
I don't know why method_A and its replace method use the same x8 register, I read and debug the two methods disassembler, and it shows that not set the original x8 register value back, It's possible the method_A does something protect? how to solve it?
any help would be appreciated!