![]() ![]() ![]() This call is expensive (it must essentially serialize the data into the kernel) and thus should be avoided whenever possible. \n\n\n \n\n\nThe () nicely explains its functionality: \n \n\n\nThis call lets you attach CF property list types to an IOSurface buffer. Instead they use one other very convenient feature: the ability to associate arbitrary kernel OSObjects with an IOSurface for heap grooming. Background to December 11th The fundamental kernel that drives both iOS and MacOS is the XNU kernel, which is a combination of BSD and Mach duct taped together to form the iOS kernel. Late in December 2017 Jonathan Levin authored the LiberiOS jailbreak for iOS 11 iOS 11.1.2, and even followed it up quickly with an updated version that fixed certain issues on the previous one. \n\n\n# Exploitation\n\nThey open an IOSurfaceRootUserClient: \n \n\n\nmatching_dict = IOServiceMatching(\"IOSurfaceRoot\") \n\nioservice = IOServiceGetMatchingService(kIOMasterPortDefault, matching_dict) \n\nIOServiceOpen(ioservice,\n\nmach_task_self(),\n\n0, // the userclient type\n\n
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