Samsung Galaxy S4 GT-I9505 Works about qcsuper HOT 4 OPEN

Hello,

Thank you for your feedback. Yes, through writing some dedicated C code, it would be possible to write the DLF frames to the flash memory of your handled device by running a standalone daemon on the Android system.

In QCSuper, the ioctl call to the /dev/diag device is performed from this file: https://github.com/P1sec/QCSuper/blob/master/inputs/adb_bridge/adb_bridge.c this code purports to forward the raw Diag frames obtained from the character device to a TCP socket.

The following modifications should be done to achieve what you are trying to do:

• Replace the code writing to a server TCP socket by code handling the Diag framing further:
  • Parse the basic Diag framing (https://github.com/P1sec/QCSuper/blob/master/docs/The%20Diag%20protocol.md#the-diag-protocol-over-usb)
  • Filter in only DIAG_LOG_F packets
  • Remove the first header of DIAG_LOG_F packets, in order to retain only their inner part that is contained in DLF files, as done here: https://github.com/P1sec/QCSuper/blob/master/inputs/_base_input.py#L325
  • Write the obtained contents on the SD card or flash drive folder of the device

The concerned program should be cross-compiled, then launched through the background from ADB (e.g adb shell sh -c "cd /your_transfer_location; ./your_program &" as root)

Regards,

from qcsuper.

Hey!

Thank you for that extremely cool answer. It is super detailed. Thank your for taking that time.

Hope we can try it soon.

from qcsuper.

hey, it's a pretty long time to post, I tried with Galaxy 4 GT-I9505, but it said "Could not find /dev/diag, does your phone have a Qualcomm chip", Yes there is no /dev/diag directory on it.
how did you solve this issue, you seemed to address this issue.
Thanks.

from qcsuper.

@SebastienChevalley please specify what firmware and version is flashed on your Samsung Galaxy S4 GT-I9505.
Can you please write detailed instruction how you managed to get all working?
Thank you!

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