Extracting firmware with python (offset question)

479 Views Asked by Bryan At 18 April 2025 at 13:44

for some reason whenever I try to extract a firmware with the identified parts using python, I get so many additional xz compressed data.

Here's my code in the python script, where it is (name, offset, and size)

    FirmwarePart("uimage_kernel", 0x0, 0x40),
    FirmwarePart("lzma",0x40,0x18A143),
    FirmwarePart("squashfs", 0x18A143,0)

Here's the Binwalk output of the original firmware binary.

I have a feeling I'm not calculating the size of the last component "squashfs" correctly. Sorry if this is unclear, I'm new to all this.

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