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Copy Microsoft Functions

 
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Chaosis13
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Joined: 14 Aug 2007
Posts: 372
PostPosted: Tue Jul 14, 2009 12:25 pm    Post subject: Copy Microsoft Functions Reply with quote
I want to make a copy of a Microsoft function like Sleep, then edit the assembly to do something a little different (I can do that). When I set a pointer to Sleep and goto it in Cheat Engine I get this:

Code:
7606EEC6 - 8b ff                      - mov edi,edi
7606EEC8 - 55                         - push ebp
7606EEC9 - 8b ec                      - mov ebp,esp
7606EECB - 5d                         - pop ebp
7606EECC - e9 fd 31 fb ff             - jmp createprocessa+6c


And nop's before and after. How do I follow the jmp? Any idea of what to do next?
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&Vage
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PostPosted: Tue Jul 14, 2009 12:38 pm    Post subject: Reply with quote
Push F5 than wait for it to break than F11 or F12.
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Chaosis13
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PostPosted: Tue Jul 14, 2009 12:57 pm    Post subject: Reply with quote
So I toggle breakpoint, then what? F11/F12 doesn't do anything... Kernel tools grayed out and not enabled.

Sorry, I don't use Cheat Engine often anymore...
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Anden100
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PostPosted: Tue Jul 14, 2009 1:51 pm    Post subject: Reply with quote
Ollydbg might be better for this job
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Dark Byte
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PostPosted: Tue Jul 14, 2009 6:55 pm    Post subject: Reply with quote
in ce:
step into = f7
step over = f8

anyhow, just press space on a jmp and it'll go to that location
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