[Tfug] OT: driver reverse engineering

[erich]

I haven't actually used it,

              but I saw an open source "system/USB sniffer" that is used 
in connection
with figuring out how to use a cellular modem on Linux when its intended
application is for Windows/MAC. Something called SniffUSB:

                http://www.pcausa.com/Utilities/UsbSnoop/default.htm

            I looked at some of the output, and the problem is to look
thru the welter of information to try and find that which is relevant.

                                                                                         
Erich


Bexley Hall wrote:
> Hi Zack,
>
>   
>>> I need to reverse engineer the interface to a touch panel.
>>> I have a copy of a NT executable that "works".  But, I
>>> am clueless as to how to use "DOS" tools to peek at what
>>> is going on inside the "driver".
>>>       
>> What kind of interface is there between the device and the
>> system?
>>     
>
> I haven't completely disassembled the thing, yet.  It's an
> older piece of medial equipment (I think MRI or XRAY) so
> everything is "custom".  Made in Japan.  None of the
> names in the driver EXE are recognizable as "typical"
> firms so it was probably commissioned as a special by
> the manufacturer (runs under NT4, IIRC)
>
>   
>> That's where I'd look - for example, there are a whole lot
>> of USB traffic sniffers that can dump just the traffic between
>> your device and the rest of the system.
>>     
>
> Predates USB.  It will either be EIA232 (hopefully) or
> some really custom interface (e.g., a pair of A/DC's on
> some IO ports).
>
> I'll try to take it apart (without breaking it in the process)
> and see what goes where.  Maybe drag out the logic analyzer
> and let it watch what's happening on the interface while I
> poke at it.
>
> I figured digging through the binary would be more revealing as
> it may cover "special cases" that might not happen in my
> limited empirical testing...
>
> --don
>
>
>       
>
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