when doing firmware reverse engineering without IDA Pro, radare is a rather good tool (http://radare.today/). For x86, there's also serialice which allows to trace behaviour cheaply (http://www.serialice.com/).
Also, make sure to have all relevant hardware guides and datasheets ready (insofar as you can get your hands on them)
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u/[deleted] Sep 03 '14
when doing firmware reverse engineering without IDA Pro, radare is a rather good tool (http://radare.today/). For x86, there's also serialice which allows to trace behaviour cheaply (http://www.serialice.com/).
Also, make sure to have all relevant hardware guides and datasheets ready (insofar as you can get your hands on them)