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Using code injection on emulated games

 
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slayermbm
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PostPosted: Fri Dec 31, 2010 12:32 pm    Post subject: Using code injection on emulated games Reply with quote

Sorry if posted in the wrong section.

I was thinking if there is a way to do it without the emulator crashing, because it happens all the time. Is there some impediment on doing that?

I mean, when I find the code which decreases health, or whetever, then I try to do a code injection with ctrl+a, template, code injection.

Well I'm a noob on ASM so could be it too. Or there is some specific problem with emulators?

Thanks.
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Dark Byte
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PostPosted: Fri Dec 31, 2010 1:36 pm    Post subject: Reply with quote

it's possible, but keep in mind that the same instruction is used by everything else in the game, from accessing health, to accessing the color of a pixel and the calculation of gravity, so you will have to put in a lot of checks to find out if it's the correct address that is being accessed

in short, no

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slayermbm
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PostPosted: Fri Dec 31, 2010 1:50 pm    Post subject: Reply with quote

These ASM comands do not work the same way in emulators they do in native PC games? Because I can easily do a code injection in computer games without crashing.
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Geri
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PostPosted: Fri Dec 31, 2010 6:07 pm    Post subject: Reply with quote

Just check a code that You find in an emulator and You will see that one code is changing MANY values. There are no specific codes to change health, ammo, etc. There are only a few codes which are changing everything in the game. Like a hub where every data exchange is taking place. So You need to write a very very good script to make sure that from thousands or millions of values, only Your health will be changed. Or else, crash.
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slayermbm
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PostPosted: Sat Jan 01, 2011 5:00 am    Post subject: Reply with quote

Ok thanks for the replies.

And a happy new year to everybody! Happy hacking! Very Happy
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