How can I unpack .mbn files?

[RockL79]

Hello all, I am trying to unpack man files to add volte support to a device that has all the hardware needed, but it is not enabled in software and I would like to try and change that. From all my research the files I need are all in the baseband and in .mbn file format, but I cannot find out how to unpack them. Any help would be appreciated!

 

[alecxs]

ghidra or IDA

 

[Renate]

I'm more conversant with Qualcomm ELF files, hashing, signing and certs.
These seem to have replaced the older MBN.

MBN files are signed. If you mod you'll have to work around this somehow.
See: https://github.com/openpst/libopenpst/blob/master/include/qualcomm/mbn.h
https://github.com/jnaulet/dloadtool/blob/master/mbn.h

 

[RockL79]

I'm more conversant with Qualcomm ELF files, hashing, signing and certs.
These seem to have replaced the older MBN.

MBN files are signed. If you mod you'll have to work around this somehow.
See: https://github.com/openpst/libopenpst/blob/master/include/qualcomm/mbn.h
https://github.com/jnaulet/dloadtool/blob/master/mbn.h

I see. This device is quite old and well, to say the least it isn’t an android device either. I’m assuming I would need to find a workaround for this even as it’s running an os that’s nearly a decade old now?

I know that the carrier bundles on this device are signed as well, but people were able to get around that, and this chip was supposedly made with the hexagon DSP and Qualcomm has documentation on how to program for this specific chip/version

 

[RockL79]

ghidra or IDA

Unfortunately these don't appear to work, or im using them incorrectly

 

[alecxs]

well, maybe you're not an reverse engineer

 

[RockL79]

well, maybe you're not an reverse engineer

Maybe it’s my first time even hearing of either of those programs and can’t even get one of them to launch without insta crashing, and the other spitting out an error whenever I try to unpack the files.

 

[alecxs]

no problem. just 10 year studying stuff and try again
https://github.com/lololosys/awesome-baseband-research

 

[Vortuks]

Hi,

I've probably managed to reverse engineer the MBN. I was able to create my own MBN and load it back.
If anyone wants to get an information, send me a message

 

[WoKoschekk]

Unfortunately these don't appear to work, or im using them incorrectly

rename it to *.zip

 

[WoKoschekk]

Hi,

I've probably managed to reverse engineer the MBN. I was able to create my own MBN and load it back.
If anyone wants to get an information, send me a message

they are only ELF files packed in an image, aren't they?

 

[Vortuks]

yeah ELF files, with 3 segments. I'm not sure about my knowledge about ELF vs MBN, but I've managed & have a program to extract $ repackage back. I've tested it on Pixel 2 XL and it's working (added support for my country).

 

[RockL79]

rename it to *.zip

unfortunately that didnt work for me either. It could be that the device im trying to work on is quite old and maybe something else has changed since then