Apple iOS 4 Security Evaluation

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Identifying PIE supportotool -hv $ otool -hv MobileSafariMobileSafari:Mach headermagic cputype cpusubtype caps filetype ncmds sizeofcmds flagsMH_MAGIC ARM V7 0x00 EXECUTE 40 4560 NOUNDEFS DYLDLINKTWOLEVEL PIEhexdump$ hexdump -C MobileSafari | head00000000 ce fa ed fe 0c 00 00 00 09 00 00 00 02 00 00 00 |................|00000010 28 00 00 00 d0 11 00 00 85 00 20 00 01 00 00 00 |(......... .....|
PIE in Real-World Apps?
Page 1 and 2: Apple iOS 4 Security EvaluationDino
Page 3 and 4: AcknowledgementsiPhone jailbreak de
Page 5 and 6: OverviewIntroductionASLRCode Signin
Page 7 and 8: Security ConcernsSensitive data com
Page 9 and 10: Persistence Attack GraphPrivileged
Page 11 and 12: Security ConcernsHow hard is it to
Page 13 and 14: ASLR with PIEExecutable Heap Stack
Page 15: Partial vs. Full ASLRPIEMainExecuta
Page 19 and 20: Bottom LineAll built-in apps in iOS
Page 21 and 22: Security ConcernsCan this applicati
Page 23 and 24: Mandatory Code SigningCode Signing
Page 25 and 26: Provisioning ProfilesThe Provisioni
Page 28 and 29: Distribution ModelsOn-Device Develo
Page 30 and 31: Code Signing InternalsAppleMobileFi
Page 32 and 33: MAC Hook API Description AMFI Usage
Page 34 and 35: Ad-Hoc Code SignatureExecutable=/De
Page 36 and 37: Code Signing Verificationvnode_chec
Page 38 and 39: Bypassing Code SigningIncomplete Co
Page 40 and 41: csopsint csops(pid_t pid, uint32_t
Page 42: CS Status FlagsFlag Value Descripti
Page 45 and 46: # ldid -e /Applications/MobileSafar
Page 47 and 48: Dynamic Code SigningThe dynamic-cod
Page 49 and 50: Sandboxing
Page 51 and 52: Sandboxing in iOSBased on same core
Page 53 and 54: Built-in Sandbox ProfilesBackground
Page 55 and 56: App Home DirectorySubdirectory.app/
Page 57 and 58: Mach Bootstrap ServersAll Mach task
Page 59 and 60: Bottom LineRemote exploits are most
Page 61 and 62: Security ConcernsWhat sensitive dat
Page 63 and 64: Encryption LayersEntire filesystem
Page 65 and 66: Data ProtectionCoverageIn iOS 4, DP
Page 67 and 68:
Passcode KeyPasscode Key is derived
Page 69 and 70:
Bottom Line6-character alphanumeric
Page 71 and 72:
FindingsThird-party applications wi
Page 73 and 74:
iOS vs. Android/BlackBerryHow does
Page 75 and 76:
On JailbreakingModern jailbreaks re
Page 77 and 78:
Hardware AdviceiPhone 3G and earlie
Page 79 and 80:
One more thing...
Page 81:
previewhobbyOne more thing...
Page 86 and 87:
$99
Page 88 and 89:
iOS Fuzz Farm• 4 x Apple TVs, swi
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Apple iOS 4 Security Evaluation

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