NVISO is proud to open source in collaboration with Christophe Beauval a tool suite to unpack the Nexus 4, 5 and 7 factory bootloader.img as well as code to work with Nexus 5’s imgdata.img and scripts to dump what’s in the flash of the Nexus 5 and write back to it. We are not aware of any more feature rich open source project that is able to dump information from the Nexus 5 and upload modified partitions to the Nexus 5.
The source code can be found on our GitHub page:
Unpacking the Nexus 4, 5 and 7 bootloader.img found in Google’s factory images and making changes to it is not an easy task. Freely available code to unpack, modify and upload the parts of the bootloader.img is already non existent, much less that code can be found to handle the imgdata partition. This open source package gives you all the building blocks to do all of this together with sample scripts on how to do it.
We would like to hear about any feedback you might have on this project, you can reach us at firstname.lastname@example.org. Collaborations and pull requests on GitHub are welcome!
We are excited to open source our first project and are planning on open sourcing more of our research in the future!