Who's interested in reverse engineering?

[Fisher Grubb]

Hi all,

My name is Fisher, I have one of these TV sticks and I want to see if I can further this project by helping to reverse engineer the driver.

Thankfully Josh has managed to capture the USB traces and put together a script/programme to send them to initialise the stick and load firmware etc but we need to know how each part works so that we know which values initialise the stick and how to change channels etc.

Does anyone have an interest or experience in this?

I am trying out the PEBrowse professional and interactive programmes, these are free from http://www.smidgeonsoft.prohosting.com/

I'm hoping that anything that is difficult to find out from the drivers them selves can be found by using USB trances and changing channels etc

Fisher

[Fisher Grubb]

I have now managed to get a hold of IDA and will be trying it out to see how useful it is.

It is supposed to be the benchmark/standard in reversing so it should prove very useful, it even gives a flow chart of bits of code so you can see what links to what.

I also have softIce which seems to be useful from what I've read but I think its development was stopped in 2000 so its probably only useful on windows 2000 or XP.

Fisher

[Michael Sabino]

Hello,

I am thinking about working on this project. FIrst I'd have to buy the card.

Have you tried converting the packet dumps to a spectrogram plot using matlab or octave or similar software? You might be able to see multiple FM stations if you tune to the middle of the FM band. Josh said 8 MHz @ 12-bits resolution. From this, we should be able to extract a spectrograph from the packet dumps.

Thanks,

Michael Sabino

[Joshua Roys]

Hello,

Thanks for your interest.  I have attempted to use GNU Radio for just that with no luck so far (but that doesn't mean I did it correctly or tried every option).  FYI, the data stream seems to be expanded to 16 bits for ease of host processing.  Newegg currently has the device for $28 after rebate, while Amazon has it for $30 with an online coupon.

Josh

[Fisher Grubb]

Hi all,

Nice to see some activity, I've been busy with my studies but Im interested so see if there is any more news and I may also get involved again as it would be nice to see another device added to the linux supported llist.

Fisher

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