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firmware: support broadcom SAO images #8

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merged 1 commit into from
Oct 30, 2024

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andrewjlamarche
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Add support for detecting Broadcom SAO images, commonly found in DOCSIS cable modems.

Source: https://github.com/jclehner/bcm2-utils/blob/master/misc/binwalk_sobj.txt

@jstucke
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jstucke commented Oct 25, 2024

Thank you for your contribution! Do you have a link to a sample that I could use to try it out?

@andrewjlamarche
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I unfortunately do not have a real sample I can share, BUT there is one for testing I have created here: fkie-cad/fact_extractor#161

@andrewjlamarche andrewjlamarche changed the title firmware: support broadcom sao images firmware: support broadcom SAO images Oct 28, 2024
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Thank you for your contribution. Seems to work fine with the test file you provided. I'm not sure what the entries in curly braces are for, though. Especially the size just seems to produce some redundant output:

broadcom-sao.bin: Broadcom SAO image (header CRC: 0x9ba78d8c, type: META, {name:META.sao} version: 0x0001, flags: 0x0, size: 93, {size:93} code type: 0x00, sign type: 0x00 , data CRC: 0xed5c1275)

@jstucke jstucke merged commit 2a2bf8b into fkie-cad:master Oct 30, 2024
@andrewjlamarche andrewjlamarche deleted the broadcom branch October 30, 2024 17:04
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2 participants