Advanced Mac OS X Rootkits.pdf - Reverse Engineering Mac OS X

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Mach Kernel RPC servers• In-kernel Mach RPC subsystems areenumerated in the mig_e table andinterfaces are in /usr/include/mach/subsystem.defs–mach_vm, mach_port, mach_host, host_priv,host_security, clock, clock_priv, processor,processor_set, is_iokit, memory_object_name,lock_set, ledger, semaphore, task, thread_act,vm_map, UNDReply, default_pager_object,security50
Conclusion• Mach is a whole lot of fun• Mach IPC can be made networktransparent and provides a goodabstraction for remote host control• I wish my desktop OS was as secure asiPhone OS• For updated slides and tools go to:–http://trailofbits.com/51
Page 1 and 2: AdvancedMac OS X RootkitsDino Dai Z
Page 3 and 4: WHAT IS MACH?3
Page 5 and 6: Mac OS X System ArchitectureSUP DAW
Page 7 and 8: Mach Microkernel Abstractions• Ta
Page 9 and 10: Example: Bootstrap server• Tasks
Page 11 and 12: Mach Tasks vs. BSD Processes• Mac
Page 13 and 14: Mach Task/Thread System Calls•Mac
Page 15 and 16: Why Mach-based Rootkits?• Traditi
Page 17 and 18: Injecting Mach Threads• Get acces
Page 19 and 20: Injecting Mach Bundles• Inject th
Page 21 and 22: Hooking and Swizzling• Hooking C
Page 23 and 24: INJECTED BUNDLE DEMO23
Page 25 and 26: NetMessage and NetName servers• N
Page 27 and 28: Machiavelli Architecture• Machiav
Page 29 and 30: Machiavelli Message FlowMachiavelli
Page 35 and 36: Complex Mach Messages• “Complex
Page 37 and 38: Serializing Mach Messages• Serial
Page 39 and 40: Machiavelli exampleint main(int arg
Page 41 and 42: Miscellaneous Agent services• Age
Page 43 and 44: MACH IN THE KERNEL43
Page 45 and 46: Uncloaking Kernel Rootkits• Acces
Page 47 and 48: Evasive Maneuvers• Unix system ca
Page 49: Example: inject_subsystemint inject

Advanced Mac OS X Rootkits.pdf - Reverse Engineering Mac OS X

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