To get at actual firmware, you'll want to identify the ROM chips and wire up an appropriate reader. You might be able to get by with a bus pirate. Once you have the actual firmware, you should be able to identify the processor (get ready to learn old obscure Motorola instruction sets) and you're off to the races. If you luck out with an x86 or ARM processor I highly recommend the Hex Rays Decompiler.
I was working as a generalist on the team, so the HN expert collective may be able to give you better pointers on specific items.
dsl|12 years ago
If you want to just hack around on CAN bus, check this project out: http://www.gadgetgangster.com/news/54/556
To get at actual firmware, you'll want to identify the ROM chips and wire up an appropriate reader. You might be able to get by with a bus pirate. Once you have the actual firmware, you should be able to identify the processor (get ready to learn old obscure Motorola instruction sets) and you're off to the races. If you luck out with an x86 or ARM processor I highly recommend the Hex Rays Decompiler.
I was working as a generalist on the team, so the HN expert collective may be able to give you better pointers on specific items.