GH1 IDA Pro database research

[Vitaliy Kiselev]

Necessary data and instructions.

All moved to developers section of this page : http://www.gh1-hack.info/wiki/IDA/GH...aseInformation

[mpgxsvcd]

Just to be clear. Is this only for the GH1 right now or can we participate with a GF1?

[Vitaliy Kiselev]

Sent few keys today. Hope that we'll see some guys posting research results soon.

[JerryB]

What is IDA 4.9 Pro and how will this help to progress the hacking of the camera? What goals do you have with this and what goals do you still feel are obtainable that have not already been accomplished with GH1? I have been away from forum for a couple weeks and saw this new post. Feel free to delete or move if necessary, I understand you guys are busy.

[cbrandin]

Vitaliy,

I got the files from you - thanks. I have a fully licensed version of IDA Pro Advanced v5 - which has some nice new features. Unfortunately, the MN103 module doesn't work with it. I can get the source code for the module. Any idea what I might be in for if I try to update it?

Chris

[Vitaliy Kiselev]

Generally we try to stay on 4.9 Free version due to fact that it is free and format is different from 5.0.

One real difference is build-in graph view. Not much.
Try modified WinGraph with 4,9 and you'll find that it is very usable.

[cbrandin]

Is there some kind of protocol we should follow with this? For example, can we put snippits of the code here, or will that cause legal issues? Also, I assume that we can't simply patch the firmware to try things out because it has to be re-packaged with some sort of checksum. Is that correct?

Chris

[Vitaliy Kiselev]

Is there some kind of protocol we should follow with this? For example, can we put snippits of the code here, or will that cause legal issues?

Just post screenshots of Ida screen with your questions or description.
I'll remove them or make closed thread in case of complains.

Also, I assume that we can't simply patch the firmware to try things out because it has to be re-packaged with some sort of checksum. Is that correct?

I'll later add support for external patch definitions to ptool.
But do not reccomend it, as bricking is possible.

[Vitaliy Kiselev]

Maybe someone should setup a collabreate server, it would be the best to share infos from the DB no ? http://www.idabook.com/collabreate/

Seems like overkill.
Plus this thing is not very polished and have troubles with IDA 4.9 we use.

[Vitaliy Kiselev]

I added requested patches to latest PTool.

Generally we must work on tables more and bitrate related routines logic reconstruction.

As I understand, bitrate is determinated with 0x66 size tables (it is 0x33 words).

0x33 is constant defining maximum possible quality.

If you look at logic, different tables are used according to settings and fps.