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AntiDebugger

 
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Johner1261
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PostPosted: Sat Mar 15, 2014 12:56 pm    Post subject: AntiDebugger Reply with quote

I'm looking to bypass the anti windows debugger a game uses. VEH debugger is detected and I can't use kernelmode because of my current CPU, though I'm planning an upgrade in less than a year.

I'd like to use the Windows Debugger for various reasons but it's detected. How can I go about getting it to work? Thanks.
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Rydian
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PostPosted: Sat Mar 15, 2014 2:31 pm    Post subject: Reply with quote

You can try changing the breakpoint settings to use hardware ones and not overwrite existing ones?
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Johner1261
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PostPosted: Sun Mar 16, 2014 4:50 pm    Post subject: Reply with quote

Rydian wrote:
You can try changing the breakpoint settings to use hardware ones and not overwrite existing ones?


Doesn't work, I tried; thanks anyways.
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Dark Byte
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PostPosted: Sun Mar 16, 2014 5:37 pm    Post subject: Reply with quote

try page exception breakpoints
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Johner1261
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PostPosted: Sun Mar 16, 2014 8:24 pm    Post subject: Reply with quote

Dark Byte wrote:
try page exception breakpoints


Unfortunately, just attaching VEH debugger will shut the game down after a bit, so that doesnt work.
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Rydian
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PostPosted: Sun Mar 16, 2014 9:21 pm    Post subject: Reply with quote

If the game has some sort of DRM-type crap that runs separately and scans active processes (so it's general cheat protection and not just anti-debugger stuff) you may just need a crack or bypass for the game.
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TsTg
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PostPosted: Sun Mar 16, 2014 9:22 pm    Post subject: Reply with quote

porbably its detecting cheatengine's veh library ?(vehdebug-i386.dll or vehdebug-x86_64.dll)

you can try Stealtheditv2 plugin, redirect the target adderss to debug, then do breakpoints in the new memory page, might work.
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Johner1261
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PostPosted: Mon Mar 17, 2014 4:57 pm    Post subject: Reply with quote

TsTg wrote:
porbably its detecting cheatengine's veh library ?(vehdebug-i386.dll or vehdebug-x86_64.dll)

you can try Stealtheditv2 plugin, redirect the target adderss to debug, then do breakpoints in the new memory page, might work.


Stealthedit is also detected. Nothing to stop the DRM I can find.
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++METHOS
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PostPosted: Mon Mar 17, 2014 5:22 pm    Post subject: Reply with quote

If stealthedit isn't working, you might look to see if CE is being detected, specifically, as there are ways to circumvent that detection. Have you tried Ollydbg or other to rule that out? The target may need to be patched, otherwise.
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Johner1261
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PostPosted: Tue Mar 18, 2014 4:49 pm    Post subject: Reply with quote

++METHOS wrote:
If stealthedit isn't working, you might look to see if CE is being detected, specifically, as there are ways to circumvent that detection. Have you tried Ollydbg or other to rule that out? The target may need to be patched, otherwise.



Ollydbg is detected. I've seen it done before but the methods are private. The debugger in specific is detected. Kernelmode isn't detected, my friend tried. I cannot use DBVM due to incompatibility though.
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Hatschi
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PostPosted: Tue Mar 18, 2014 6:05 pm    Post subject: Reply with quote

Use ollydb 1.10 + strongod plugin, this one never gets detected.
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Johner1261
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PostPosted: Tue Mar 18, 2014 6:59 pm    Post subject: Reply with quote

Hatschi wrote:
Use ollydb 1.10 + strongod plugin, this one never gets detected.


Didn't work.
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Hatschi
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PostPosted: Tue Mar 18, 2014 7:32 pm    Post subject: Reply with quote

I doubt it didn't worked. What's the game name?
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