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Revision as of 16:29, 23 October 2011
This is the process by which full execute and write access is obtained on all the partitions of the iPhone. It is done by patching /etc/fstab to mount the System partition as read-write. This is entirely different from an unlock. Jailbreaking is the first action that must be taken before things like unofficial activation (hacktivation), and unofficial unlocking can be applied.
The original jailbreak also included modifying the AFC service (used by iTunes to access the filesystem) to give full filesystem access from root. This was later updated to create a new service (AFC2) that allows access to the full filesystem.
Modern jailbreaks also include patching the kernel to get around code signing and other restrictions.
Contents
Exploits which were used in order to jailbreak 1.x
1.0.2
- Restore Mode (iBoot had a command named cp, which had access to the whole filesystem)
1.1.1
- Symlinks (an upgrade jailbreak)
- libtiff exploit (Adapted from the PSP scene, used by JailbreakMe)
1.1.2
- Mknod (an upgrade jailbreak)
1.1.3 / 1.1.4 / 1.1.5
- Soft Upgrade (an upgrade jailbreak)
- Ramdisk Hack
Exploits which are used in order to jailbreak 2.x
2.0 / 2.0.1 / 2.0.2
2.1
2.1.1
2.2
- Pwnage + Pwnage 2.0 (iPhone, iPod touch, and iPhone 3G)
2.2.1
- Pwnage + Pwnage 2.0 (iPhone, iPod touch, and iPhone 3G)
- 0x24000 Segment Overflow + ARM7 Go (from iOS 2.1.1) (iPod touch 2G)
Exploits which are used in order to jailbreak 3.x
3.0 / 3.0.1
- Pwnage + Pwnage 2.0 (iPhone, iPod touch, and iPhone 3G)
- ARM7 Go (from iOS 2.1.1) + 0x24000 Segment Overflow ( iPod touch 2G)
- Pwnage + iBoot Environment Variable Overflow (iPhone, iPod touch, and iPhone 3G)
- 0x24000 Segment Overflow + iBoot Environment Variable Overflow (iPod touch 2G and iPhone 3GS)
3.1 / 3.1.1
- Pwnage + Pwnage 2.0 (together for untethered jailbreak on iPhone, iPod touch, and iPhone 3G)
- usb_control_msg(0x21, 2) Exploit (tethered jailbreak on iPod touch 2G new bootrom, iPhone 3GS new bootrom, and iPod touch 3G)
- 0x24000 Segment Overflow + usb_control_msg(0x21, 2) Exploit (iPod touch 2G old bootrom and iPhone 3GS old bootrom)
3.1.2
- Pwnage + Pwnage 2.0 (together for untethered jailbreak on iPhone, iPod touch, and iPhone 3G)
- usb_control_msg(0x21, 2) Exploit (tethered jailbreak on iPod touch 2G new bootrom, iPhone 3GS new bootrom, and iPod touch 3G)
- 0x24000 Segment Overflow + usb_control_msg(0x21, 2) Exploit (iPod touch 2G old bootrom and iPhone 3GS old bootrom)
- MobileBackup Copy Exploit + Incomplete Codesign Exploit + BPF_STX Kernel Write Exploit (all devices, used in Spirit)
- Malformed CFF Vulnerability + Incomplete Codesign Exploit + IOSurface Kernel Exploit (all devices, used in Star)
3.1.3
- Pwnage + Pwnage 2.0 (together for untethered jailbreak on iPhone, iPod touch, and iPhone 3G)
- 0x24000 Segment Overflow (for iPod touch 2G and iPhone 3GS devices with older bootroms)
- MobileBackup Copy Exploit + Incomplete Codesign Exploit + BPF_STX Kernel Write Exploit (all devices, used in Spirit)
- Malformed CFF Vulnerability + Incomplete Codesign Exploit + IOSurface Kernel Exploit (all devices, used in Star)
3.2
- MobileBackup Copy Exploit + Incomplete Codesign Exploit + BPF_STX Kernel Write Exploit (all devices, used in Spirit)
- Malformed CFF Vulnerability + Incomplete Codesign Exploit + IOSurface Kernel Exploit (iPad, used in Star)
3.2.1
- Malformed CFF Vulnerability + Incomplete Codesign Exploit + IOSurface Kernel Exploit (iPad, used in Star)
3.2.2
- limera1n's bootrom exploit + Packet Filter Kernel Exploit (iPad)
Exploits which are used in order to jailbreak 4.x
4.0 / 4.0.1
- Pwnage + Pwnage 2.0 (iPhone 3G)
- 0x24000 Segment Overflow (iPod touch 2G and iPhone 3GS devices with older bootroms)
- Malformed CFF Vulnerability + Incomplete Codesign Exploit + IOSurface Kernel Exploit (all devices, used in Star)
4.0.2
- Pwnage + Pwnage 2.0 (iPhone 3G)
- ARM7 Go (from iOS 2.1.1) + 0x24000 Segment Overflow (iPod touch 2G)
- 0x24000 Segment Overflow (iPhone 3GS)
- limera1n's bootrom exploit + Packet Filter Kernel Exploit (iPhone 3GS new bootrom, iPod touch 3G, iPhone 4 GSM model, and iPod touch 4G)
4.1
- Pwnage + Pwnage 2.0 (together to jailbreak the iPhone 3G)
- ARM7 Go (from iOS 2.1.1) + 0x24000 Segment Overflow (together for untethered jailbreak on iPod touch 2G old bootrom)
- limera1n's bootrom exploit + 0x24000 Segment Overflow (together for untethered jailbreak on iPhone 3GS old bootrom)
- limera1n's bootrom exploit + Packet Filter Kernel Exploit (together for untethered jailbreak on iPhone 3GS new bootrom, iPod touch 3G, iPhone 4 GSM model, iPod touch 4G, and Apple TV 2G))
- usb_control_msg(0xA1, 1) Exploit + Packet Filter Kernel Exploit (together for untethered jailbreak on iPod touch 2G)
4.2.1
- Pwnage + Pwnage 2.0 (together to jailbreak the iPhone 3G)
- ARM7 Go (from iOS 2.1.1) + 0x24000 Segment Overflow (together for untethered jailbreak on iPod touch 2G old bootrom)
- limera1n's bootrom exploit + 0x24000 Segment Overflow (together for untethered jailbreak on iPhone 3GS old bootrom)
- limera1n's bootrom exploit + HFS Legacy Volume Name Stack Buffer Overflow (together for untethered jailbreak on iPhone 3GS new bootrom, iPod touch 3G, iPad, iPhone 4 GSM model, iPod touch 4G, and Apple TV 2G)
- usb_control_msg(0xA1, 1) Exploit + HFS Legacy Volume Name Stack Buffer Overflow (together for untethered jailbreak on iPod touch 2G)
4.2.6 / 4.2.7 / 4.2.8
- limera1n's bootrom exploit + HFS Legacy Volume Name Stack Buffer Overflow (together for untethered jailbreak on iPhone 4 CDMA model)
- T1 Font Integer Overflow (used for Saffron)
4.3
- limera1n's bootrom exploit + 0x24000 Segment Overflow (together for untethered jailbreak on iPhone 3GS old bootrom)
- limera1n's bootrom exploit (tethered jailbreak on iPhone 3GS new bootrom, iPod touch 3G, iPad, iPhone 4 GSM model, iPod touch 4G, and Apple TV 2G)
- T1 Font Integer Overflow (used for Saffron)
4.3.1 / 4.3.2 / 4.3.3
- limera1n's bootrom exploit + 0x24000 Segment Overflow (together for untethered jailbreak on iPhone 3GS old bootrom)
- limera1n's bootrom exploit + ndrv_setspec() Integer Overflow (together for untethered jailbreak on iPhone 3GS new bootrom, iPod touch 3G, iPad, iPhone 4 GSM model, and iPod touch 4G)
- T1 Font Integer Overflow (used for Saffron)
