[Metalab] Ask Metalab: Please help decoding this web-request! (eg. ~base64) "?request=CsQCCuABRFFBQUFKd0FBQURCdU..."

[Chris Hager]

Maybe also interesting and related:

Google is internally using the protocol buffer [1] a lot for 
serialization. Could it be that the request is serialized with this 
protocol?

As you mentioned, beginning the request with "\xc4" indicates an 
information to the receiver about the content. Could that hint to a 
binary encoding -- or do you rather think it's encoded with an algorithm 
such as base64?

- Chris

 [1] http://code.google.com/p/protobuf/


Thomas R. Koll wrote:
>> Output (with repr):
>> '\n\xc4\x02\n 
>> \xe0\x01DQAAAJwAAADBuNClm8PAy5Hr393OZSI8DrglXLMTgVM5hn0glGaTY4Xj7lLGN_v1DgUDySiUWo5PITOmJU7CdEhXzpHr9s40OMGNDdHxoPmgck3DBMCcd53rWJiNW0xpar5-DIcmuEikPiBTD-R4BA143JOtl7nUSkmcHf2axnyQQYLPncTDEFsRsh7L_jSIqZCAyRj27Cx4BBh-TyXSlieTGEpSXNe0\x10\x00\x18\xea\x07"\x10200145da90c86e5f*\x07dream:32\x02en:\x02GBB\x10T-Mobile
>> AustriaJ\x00R\x0523203Z\x0523203b\x15am-android-tmobile-at\x13"\n 
>> \x08\x048\x01@\x00H\nP\x00\x14'
>>
>> So these are a lot of hex characters which are not inside the ascii
>> character map. I don't know if this is the right trail, but here is
>> where I don't know how to proceed on myself. It would be very
>> interesting to see how the G1's communicate with Google!
>
>
> \xc4 mean 244 characters. \x02GBB is 2 chars: that's GB plus that B?
> But in generalthat explains the hexcodes quite well.
> So, the only real interesting thing is this string:
> "DQAAAJwAAADBuNClm8PAy5Hr393OZSI8DrglXLMTgVM5hn0glGaTY4Xj7lLGN_v1DgUDySiUWo5PITOmJU7CdEhXzpHr9s40OMGNDdHxoPmgck3DBMCcd53rWJiNW0xpar5 
> -DIcmuEikPiBTD- 
> R4BA143JOtl7nUSkmcHf2axnyQQYLPncTDEFsRsh7L_jSIqZCAyRj27Cx4BBh- 
> TyXSlieTGEpSXNe0"
>
> I expect it to be a unique session key not containing any information  
> at all
> (or at least that's what I'd claim if I'd was Google).
>
> ciao, tom
>
> --
> Thomas R. "TomK32" Koll <> http://ananasblau.com
> just a geek trying to change the world
> http://github.com/TomK32
>
>
>
>
> _______________________________________________
> Metalab mailing list
> Metalab at lists.metalab.at
> http://lists.metalab.at/mailman/listinfo/metalab
>
>