i want to mod suzuki slda firmware please help

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aryanrh

Member
Aug 30, 2021
7
1
hello as i mentioned title i want to modify the slda firmware of suzuki infortainment system but if i edit flash it security checks will fail please help me how to change the checksums of fimware and i want to add a feauture to open terminal

please help me to do these changes i have been searching for it from around an year

the firmware files are like this:---
├── bot.fp.tar.gz.bin
├── container.iso.bin
├── dyn.bsh.tar.gz.bin
├── force.dnl
├── kds.dnl
├── manifest.ini
├── manifest.mnf
├── manifest.smd
├── nav.suz.tar.gz.bin
├── prj.bsh.tar.gz.bin
├── rfs.bsh.tar.bz2.bin
├── shutdown.dnl
├── stc.bsh.tar.gz.bin
└── version.info

the original firmware download link:::------ https://drive.google.com/file/d/1_vZkryOtVuRKnbn1AYijVvIx8YmfYT5d/view

and i tried booting from the kali live iso i replaced the kali filesystem.squashfs with the rfs.bsh.tar.bz2.bin which is main chroot of the slda firmware but it doesn't have a package manager so i couldn't do much.
Please help me with this
 

PanMaltan

New member
Feb 10, 2022
1
1
Hi

I think its RSA privtae key case here

i suppose that once you enter SD card bootloader check your software using its own private key which i think is stored somewhere on PCB (either eeprom or in HSM). If it is in EEPROM, then it would be easier to read it, but if in HSM then you can give up.

i tried to find PCB schematic or at least picture to find out what is there, but only thing i find is those pictures with very poor quality, so you cannot read part numbers: https://fccid.io/YBN-52R0/Internal-Photos/Internal-Photos-3419279
 
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    Hi

    I think its RSA privtae key case here

    i suppose that once you enter SD card bootloader check your software using its own private key which i think is stored somewhere on PCB (either eeprom or in HSM). If it is in EEPROM, then it would be easier to read it, but if in HSM then you can give up.

    i tried to find PCB schematic or at least picture to find out what is there, but only thing i find is those pictures with very poor quality, so you cannot read part numbers: https://fccid.io/YBN-52R0/Internal-Photos/Internal-Photos-3419279