(keitai-l) Re: Hacking Java sites

From: Sam Joseph <gaijin_at_yha.att.ne.jp>
Date: 09/03/03
Message-ID: <3F559B5A.9020405@yha.att.ne.jp>
Hi All,

It has been interesting following this discussion, but one thing that 
does not seem to have come up is how to get appli from official sites on 
to your PC in order to start hacking them.

I mean correct me if I'm wrong, but if you have say an official DoCoMo 
site and you make applis available over it, people will only be able to 
access the site by phone right?  I mean unless they know the actual URL 
of your site, then they can't even try and download your appli to the PC

Now presumably this it is not impossible to get hold of the URL for an 
official appli download site, I don't know a simple way to do it.

Then even if you are not an official site, you could set up your server 
so as to only provide downloads to requests coming from within the 
Docomo network (e.g. by filtering IP addresses), i.e. so that would-be 
hackers can only download onto phones and not their PCs, which is then 
not much use for hacking.

Presumably one could spoof the IP address so that one could pretend to 
be sending a request from inside the docomo network, but then again I'm 
not sure how easy or difficult this would be. 

Still this would put at least another couple of barriers between your 
precious source code and the would be hacker.

CHEERS> SAM


Cedric NICOLAS wrote:

>Hello everybody,
>
>I've a question for those who know well the mature Japanese market. Do you
>see hackers of Java programs using phones connected to a PC or using PC
>wireless modems to get Java archives from premium content sites, decompiling
>it (it's really easy to do it), and then republishing the games for free (or
>not) after modifications on the source code (like modifying images and
>graphics part, but keeping core algorithms of code) ?
>We are afraid about this security threat, because official content providers
>could complain about source code illegal use, and loss of revenues.
>Have you heard about this ? Is this technically possible in Japan ? In
>Europe GPRS modems that you can connect to a PC are freely available.
>
>Regards,
>
>
>C.Nicolas
>Bouygues Telecom
>
>
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Received on Wed Sep 3 10:40:14 2003