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Difference between revisions of "S5L8720"
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| − | This is the Application Processor used on the [[ |
+ | This is the Application Processor used on the [[N72AP|iPod touch (2nd generation)]]. |
| − | == Exploits == |
+ | == [[Bootrom]] Exploits == |
| + | * [[0x24000 Segment Overflow]] - only in [[Bootrom 240.4]] (old bootrom) |
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| − | === [[iBoot]] === |
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| + | * [[usb_control_msg(0xA1, 1) Exploit]] |
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| − | '''Note''': [[iBoot]] on the S5L8720 can be downgraded, allowing any of these exploits to be used on future firmwares |
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| + | '''Note''': [[iBoot (Bootloader)|iBoot]] on the S5L8720 can be downgraded, allowing any of the [[iBoot (Bootloader)|iBoot]] exploits to be used on future firmwares. |
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| − | * [[ARM7 Go]] - Works on [[iOS]] 2.1.1 |
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| − | * [[iBoot Environment Variable Overflow]] - Works up to [[iOS]] 3.1 beta 3 |
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| − | * [[usb_control_msg(0x21, 2) Exploit]] - Works up to [[iOS]] 3.1.2 |
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| − | |||
| − | === [[S5L8720 (Bootrom)|Bootrom]] === |
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| − | * [[0x24000 Segment Overflow]] - only in [[iBoot-240.4]] (old bootrom) |
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| − | * [[usb_control_msg(0xA1, 1) Exploit]] - in [[iBoot-240.4]] and [[iBoot-240.5.1]] |
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| − | |||
| − | === [[Kernel]] === |
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| − | * [[BPF STX Kernel Write Exploit]] - Works up to [[iOS]] 3.1.3 |
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| − | * [[IOSurface Kernel Exploit]] - Works up to [[iOS]] 4.0 |
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| − | * [[Packet Filter Kernel Exploit]] - Works up to [[iOS]] 4.1 |
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| − | * [[HFS Legacy Volume Name Stack Buffer Overflow]] - Works up to iOS 4.2.1 |
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| − | |||
| − | === [[Userland]] === |
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| − | * [[MobileBackup Copy Exploit]] - Works up to [[iOS]] 3.1.3 |
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| − | * [[Malformed CFF Vulnerability]] - Works up to [[iOS]] 4.0 |
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==Boot Chain== |
==Boot Chain== |
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| − | [[VROM]]->[[LLB]]->[[iBoot]]->[[Kernel]]->[[Firmware|System Software]] |
+ | [[VROM]]->[[LLB]]->[[iBoot (Bootloader)|iBoot]]->[[Kernel]]->[[Firmware|System Software]] |
| − | It is definitely worthy to note that the [[Pwnage]] exploit is fixed because the images are now flashed to the [[NOR]] in their encrypted [[IMG3 File Format|IMG3]] containers, and the [[ |
+ | It is definitely worthy to note that the [[Pwnage]] exploit is fixed because the images are now flashed to the [[NOR]] in their encrypted [[IMG3 File Format|IMG3]] containers, and the [[bootrom]] can properly check [[LLB]]'s signature. That being said, unsigned images can still be run using the [[0x24000 Segment Overflow]], provided the bootrom is [[Bootrom 240.4|old enough]]. |
==See Also== |
==See Also== |
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==External Links== |
==External Links== |
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* [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0301h/DDI0301H_arm1176jzfs_r0p7_trm.pdf Technical Reference Manual: ARM1176JZF-S] |
* [http://infocenter.arm.com/help/topic/com.arm.doc.ddi0301h/DDI0301H_arm1176jzfs_r0p7_trm.pdf Technical Reference Manual: ARM1176JZF-S] |
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| + | [[Category:Application Processors]] |
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Latest revision as of 12:33, 23 March 2017
This is the Application Processor used on the iPod touch (2nd generation).
Bootrom Exploits
- 0x24000 Segment Overflow - only in Bootrom 240.4 (old bootrom)
- usb_control_msg(0xA1, 1) Exploit
Note: iBoot on the S5L8720 can be downgraded, allowing any of the iBoot exploits to be used on future firmwares.
Boot Chain
VROM->LLB->iBoot->Kernel->System Software
It is definitely worthy to note that the Pwnage exploit is fixed because the images are now flashed to the NOR in their encrypted IMG3 containers, and the bootrom can properly check LLB's signature. That being said, unsigned images can still be run using the 0x24000 Segment Overflow, provided the bootrom is old enough.
