Apple iOS 4 Security Evaluation

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Bottom LineShould you deploy <strong>iOS</strong> devices for enterprise use?Wait for <strong>iOS</strong> 5, hopefully DP API is more thoroughAudit any apps w/ enterprise data for Data Protection API usageor poor use of custom cryptographyPrefer iPad2 and to-be-released iPhone because they don’t haveknown BootROM exploitsUse an MDM product and apply security policy to all devicesDon’t let users jailbreak the devices or else you may as well justgive them Android devices
One more thing...
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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
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Persistence Attack GraphPrivileged
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Security ConcernsHow hard is it to
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ASLR with PIEExecutable Heap Stack
Page 15 and 16:
Partial vs. Full ASLRPIEMainExecuta
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PIE in Real-World Apps?
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Bottom LineAll built-in apps in iOS
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Security ConcernsCan this applicati
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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: Hardware AdviceiPhone 3G and earlie
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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