Hacking Mac OS X - Black Hat

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Leopard security The good: application sandboxing The bad: Leopard firewall The ugly: library randomization
Sandboxing Done via Seatbelt kext Can use default profiles nointernet’, ‘nonet’, ‘nowrite’, ‘write-tmp-only’, and ‘pure-computation’ Or custom written profiles See /usr/share/sandbox for examples
Page 1 and 2: Owning the Fanboys: Hacking Mac OS
Page 3: Outline Leopard security Tracing ex
Page 7 and 8: More sandboxing Some applications a
Page 9 and 10: Leopard firewall Disabled by defaul
Page 11 and 12: One final note on Leopard “Securi
Page 13 and 14: Truss syscall:::entry /execname ==
Page 15 and 16: Memory Tracer pid$target::malloc:en
Page 17 and 18: iTunes hates you (gdb) attach 7551
Page 19 and 20: Inside iTunes In gdb (0x1f = PT_DEN
Page 21 and 22: Jump tables EIP relative data addre
Page 23 and 24: Result of script
Page 25 and 26: Typical disassembly of Obj-C
Page 27 and 28: objc_msgSend Typically the first ar
Page 29 and 30: The code get_func_name(cpu.eip + di
Page 31 and 32: More results: xrefs!
Page 33 and 34: Changelog snooping Apple forks proj
Page 35 and 36: Apple’s pre-release vulnerabiliti
Page 37 and 38: Server Side mDNSResponder (sandboxe
Page 39 and 40: Safari Native support /Applications
Page 41 and 42: ReportCrash aka CrashReporter launc
Page 43 and 44: Monitoring script #!/bin/bash X=0;
Page 45 and 46: Exploiting Safari Massaging the hea
Page 47 and 48: Heap spray This unpredictability wa
Page 49 and 50: The plan Occurs in three steps Defr
Page 51 and 52: Create adjacent allocations Keep re
Page 53 and 54: JavaScript Safari JavaScript code i
Page 55 and 56:
Therefore... In JavaScript var name
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Heap overflows Some protections on
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Win var name = new Array(1000); nam
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Pwn2Own - feng shei try{ for(i=0; i
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Heap defragmentation Breakpoint 3,
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Right in the hole! Breakpoint 3, 0x
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iPhone Apple’s phone Runs a strip
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Unlocking from carrier 3G Requires
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Processes # ps aux USER PID %CPU %M
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Interesting files /private/var/mobi
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Exploits then... When iPhone was re
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Smaller attack surface Mostly like
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Port of RegEx exploit NOOP sled and
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Feng shei iPhone style (Output from
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http://appleguytom.blogspot.com/200
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Hacking Mac OS X - Black Hat

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