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Open-source jailbreaking tool for many iOS devices

*Read disclaimer before using this software.

checkm8

Quick start guide for checkm8

  1. Use a cable to connect device to your Mac. Hold buttons as needed to enter DFU Mode.

  2. First run ./ipwndfu -p to exploit the device. Repeat the process if it fails, it is not reliable.

  3. Run ./ipwndfu --dump-rom to get a dump of SecureROM.

  4. Run ./ipwndfu --decrypt-gid KEYBAG to decrypt a keybag.

  5. Run ./ipwndfu --demote to demote device and enable JTAG.

Features

Dependencies

This tool should be compatible with Mac and Linux. It won't work in a virtual machine.

Tutorial

This tool can be used to downgrade or jailbreak iPhone 3GS (new bootrom) without SHSH blobs, as documented in JAILBREAK-GUIDE.

Exploit write-up

Write-up for alloc8 exploit can be found here:

https://github.com/axi0mX/alloc8

iBSS

Download iPhone 3GS iOS 4.3.5 IPSW from Apple:

http://appldnld.apple.com/iPhone4/041-1965.20110721.gxUB5/iPhone2,1_4.3.5_8L1_Restore.ipsw

In Terminal, extract iBSS using the following command, then move the file to ipwndfu folder:

unzip -p iPhone2,1_4.3.5_8L1_Restore.ipsw Firmware/dfu/iBSS.n88ap.RELEASE.dfu > n88ap-iBSS-4.3.5.img3

Coming soon!

Disclaimer

This is BETA software.

Backup your data.

This tool is currently in beta and could potentially brick your device. It will attempt to save a copy of data in NOR to nor-backups folder before flashing new data to NOR, and it will attempt to not overwrite critical data in NOR which your device requires to function. If something goes wrong, hopefully you will be able to restore to latest IPSW in iTunes and bring your device back to life, or use nor-backups to restore NOR to the original state, but I cannot provide any guarantees.

There is NO warranty provided.

THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

Toolchain

You will not need to use make or compile anything to use ipwndfu. However, if you wish to make changes to assembly code in src/*, you will need to use an ARM toolchain and assemble the source files by running make.

If you are using macOS with Homebrew, you can use binutils and gcc-arm-embedded. You can install them with these commands:

brew install binutils
brew cask install https://raw.githubusercontent.com/Homebrew/homebrew-cask/b88346667547cc85f8f2cacb3dfe7b754c8afc8a/Casks/gcc-arm-embedded.rb

Credit

geohot for limera1n exploit

posixninja and pod2g for SHAtter exploit

chronic, CPICH, ius, MuscleNerd, Planetbeing, pod2g, posixninja, et al. for 24Kpwn exploit

pod2g for steaks4uce exploit

walac for pyusb