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| R&S RTB2004 Snooping |
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| YetAnotherTechie:
Thank you ElectronMan for your investigation! Can you please post your version numbers? About the NAND, i suggest not stripping but saving the extra NAND bytes to a separate file, this could help in the future to repair a corrupted dump/chip. Do you know that those chips have unique data sectors, that can be programmed only once, have you considered reading them too? |
| ElectronMan:
--- Quote from: YetAnotherTechie on October 07, 2020, 11:47:01 pm ---Thank you ElectronMan for your investigation! Can you please post your version numbers? About the NAND, i suggest not stripping but saving the extra NAND bytes to a separate file, this could help in the future to repair a corrupted dump/chip. Do you know that those chips have unique data sectors, that can be programmed only once, have you considered reading them too? --- End quote --- I haven't looked at any of the spare areas on the NAND chip. Everything appears to be out in the open. I can take an image easily enough with the NAND formatting in it, though I don't trust JTAG for writing back to my NAND unless I've got no other choice. Here are the versions (I have never installed most of these, so they must come on there from the factory): --- Code: ---25FF20: " [01.100 - HCL: 02.500 - MesOS: 03.760] with GCC 5.3.0" 143F630: "Build 39 built on 2017-03-02 15:39:23 by SBC [01.203 - HCL: 02.500 - MesOS: 03.760] with GCC 5.3.0" 269ED00: " [01.210 - HCL: 02.500 - MesOS: 03.760] with GCC 5.3.0" 38FE3D0: " [02.000 - HCL: 03.100 - MesOS: 04.100] with GCC 5.3.0" 4C7DA10: " [02.121 - HCL: 03.200 - MesOS: 04.200] with GCC 5.3.0" 605D020: " [02.202 - HCL: 03.300 - MesOS: 04.300] with GCC 5.3.0" --- End code --- |
| ElectronMan:
Found something interesting in memory. 32 bytes, padded with zeros on the end.... I wonder if they use the default AES256-CBC initialization vector for encrypting their firmware...... ::) |
| tv84:
:clap: :clap: :clap: IV=0 |
| abyrvalg:
Great! I was afraid they hid it in the FPGA part >:D |
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