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=== [[:Category:Patches|Patches]] === * [[Kernel Patches|Kernel]]

Pwnage starts by booting from a memory device (ramdisk) in “secure” environment to prevent the kernel from disabling encryptio ...They just copy the secure bootloader into RAM and blindly apply a list of patches to it. We exploited this pre-existing patching mechanism to patch out the R

* [[Ramdisk Hack]] * Uses [[Ramdisk Hack]]+[[Pwnage]] in iPwner then creates the firmware.

# it patches [[iBoot]] to load unsigned [[IMG3 File Format|IMG3]]s and not care about th # ramdisk is loaded (sent with payload) and moved to ramdisk region at 0x44000000, patched kernel is tacked on to the end

- slide for emergency (before lockdownd patches) <- this is activation and eventually ZiPhone is released (unsigned ramdisk exploit)

...eases an iPhone update. [[File:25C3 B08.png|thumb|left|B08]] We try to get patches out 24-48 hours after the release of those updates. And the modular bundle ...ure Hash Algorithm|SHA]] hash of the filesystem is stored on a encrypted [[Ramdisk]]. And this way everything is encrypted. This makes it difficult for us to

* ASR does not exist on ramdisk or is corrupt/not signed. ...use it. Therefore proper kernel patches are required. If necessary kernel patches are not applied, it will fail to load asr and error 9 would occur during re

Use [[xpwntool]] to decrypt all img3 files: NOR, kernelcache and the restore ramdisk #Use [[GenPass]] with decrypted [[Ramdisk]] to get the rootfs vfdecrypt key.

# Decrypt Restore Ramdisk using [[xpwntool]] and mount it # Edit options.plist on the [[Restore Ramdisk]] (Ignore any other settings specified in the plist, don't edit them)

...stem Restore''' (also known as '''ASR''') is an application found on the [[Ramdisk]]s of an [[IPSW File Format|IPSW]] firmware file. It works by writing the [[Category:Ramdisk Patches]]

[[Category:Ramdisk Patches]]

* [[Ramdisk Hack]] * Racing KPP for some of the patches.

...es are composed of 4 files; 3 patches and 1 plist. The patch files contain patches to ASR, iBEC and iBSS to ensure that iDevice boots up while skipping certai To be able to create the patches, one needs several files from related IPSW. In this tutorial, we will be us

...quire the kDFU procedure, because normal ota blobs are signing a different ramdisk. With ota blobs it is possible to downgrade the baseband, which is otherwis ...methods slightly differ (he uses TU’s buildmanifest.plist, I include the patches in the bundle), after successful downgrading there is no difference for the

...ning the process when the signatures don’t match. The ability to use any ramdisk also makes it possible to use OTA blobs instead of regular ERASE/UPDATE blo ...rtition <code>/dev/disk0s1s3</code> instead of the main system. Additional patches down the bootchain are required.