Targeting the iOS Kernel - Reverse Engineering Mac OS X
Targeting the iOS Kernel - Reverse Engineering Mac OS X Targeting the iOS Kernel - Reverse Engineering Mac OS X
Helping IDA - findAndMarkKEXT.py • IDAPython script that • scans the __PRELINK_TEXT segment for Mach-O files • adds new segments for each KEXT section • marks code segments as THUMB code • handles __destructor and __constructor • adds kmod_info to sqlite database • shows a list of KEXT Stefan Esser • Targeting the iOS Kernel • April 2011 • 20
Helping IDA - findAndMarkKEXT.py Stefan Esser • Targeting the iOS Kernel • April 2011 • 21
- Page 1 and 2: Targeting the iOS Kernel Stefan Ess
- Page 3 and 4: Motivation • iPhone security heav
- Page 5 and 6: Part I Introduction Stefan Esser
- Page 7 and 8: Finding Vulnerabilities in the iOS
- Page 9 and 10: Interesting Kernel Bugs - OS X OS X
- Page 11 and 12: Part II The iOS Kernelcache Stefan
- Page 13 and 14: Getting the iOS Kernelcache (II)
- Page 15 and 16: Kernelcache is just a Mach-O Binary
- Page 17 and 18: iOS Kernelcache vs. IDA • IDA can
- Page 19: Helping IDA - Kernel Extensions •
- Page 23 and 24: IOKit Driver Classes (I) • IOKit
- Page 25 and 26: IOKit Object Hierarchy - Full View
- Page 27 and 28: Part IV iOS Kernel Where Are your S
- Page 29 and 30: Kernel Symbols - Manual Symbolizati
- Page 31 and 32: Zynamic‘s BinDiff • Zynamic‘s
- Page 33 and 34: Zynamic‘s BinDiff - Demo (II) Ste
- Page 35 and 36: Using IOKit Class Hierarchy for Sym
- Page 37 and 38: Exporting Symbols • IDA cannot ex
- Page 39 and 40: iOS Kernel Attack Surface • simpl
- Page 41 and 42: Finding and Marking the Syscall Tab
- Page 43 and 44: Attacking through Network Protocols
- Page 45 and 46: Attacking through Network Protocols
- Page 47 and 48: Attacking through Devices (II) com.
- Page 49 and 50: Dumping List of Sysctl Handlers mai
- Page 51 and 52: Attacking from User-Land: IOKit Dri
- Page 53 and 54: iOS Kernel Debugging • no support
- Page 55 and 56: iPhone Dock Connector (Pin-Out) PIN
- Page 57 and 58: Ingredients (I) • 470 kΩ resisto
- Page 59 and 60: Ingredients (III) • FT232RL Break
- Page 61 and 62: Final USB and USB Serial Cable •
- Page 63 and 64: KDP over serial • KDP over serial
- Page 65 and 66: Using GDB... $ /Developer/Platforms
- Page 67: Links • xpwntool - https://github
Helping IDA - findAndMarkKEXT.py<br />
• IDAPython script that<br />
• scans <strong>the</strong> __PRELINK_TEXT segment for <strong>Mac</strong>h-O files<br />
• adds new segments for each KEXT section<br />
• marks code segments as THUMB code<br />
• handles __destructor and __constructor<br />
• adds kmod_info to sqlite database<br />
• shows a list of KEXT<br />
Stefan Esser • <strong>Targeting</strong> <strong>the</strong> <strong>i<strong>OS</strong></strong> <strong>Kernel</strong> • April 2011 •<br />
20
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