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define dword (dd) on c++

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gunminiho
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Joined: 15 Dec 2008
Posts: 144
Location: peru

Posted: Tue Jul 13, 2010 1:16 pm Post subject: define dword (dd) on c++

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OK guys there's some scripts liek this:

[

Code:

ENABLE]
alloc(lol,400)
label check
label return
label skip

lol:
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
dd 00256315
.
.
.
dd 00

check:
cmp eax,lol
je skip
cmp eax,0
je return
add eax,4
jmp check

return:
jmp Address+6

how do i do that dd on C++?

i've seen doing it on builder like this:

Code:

void __declspec(naked) lol()
{
__asm

{
   dd 0x001F6EE0
   dd 0x001F72C8
   dd 0x001F6EE1
   dd 0x001F72C9
.
.
.

and then use another naked function to emule this

Code:

check:
cmp eax,lol
je skip
cmp eax,0
je return
add eax,4
jmp check

return:
jmp Address+6

and i did it on C++ ( Visual Studio 2008 )

and it throws me an error on dd

Quote:

error C2400: syntax error inline assembly code in 'opcode', found 'constant'

am i doing something wrong? or isn't dd a way to recreate it.

PS: i already declared a array of DWORDs but it doesn't work.

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hcavolsdsadgadsg
I'm a spammer

Reputation: 26

Joined: 11 Jun 2007
Posts: 5801

Posted: Tue Jul 13, 2010 2:10 pm Post subject:

just create an array of DWORDS normally outside of the inline asm block

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gunminiho
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Joined: 15 Dec 2008
Posts: 144
Location: peru

Posted: Tue Jul 13, 2010 3:45 pm Post subject:

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slovach wrote:

just create an array of DWORDS normally outside of the inline asm block

i tried it doesn't work

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hcavolsdsadgadsg
I'm a spammer

Reputation: 26

Joined: 11 Jun 2007
Posts: 5801

Posted: Tue Jul 13, 2010 5:17 pm Post subject:

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Code:

#include <Windows.h>
int main()
{
DWORD scrote[] = { 1, 2, 3 };

__asm
{
   mov eax, dword ptr [scrote]
   mov ecx, dword ptr [scrote + 4]
   mov edx, dword ptr [scrote + 8]
   nop

}

return 0;
}

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gunminiho
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Joined: 15 Dec 2008
Posts: 144
Location: peru

Posted: Tue Jul 13, 2010 6:49 pm Post subject:

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slovach wrote:

Code:

#include <Windows.h>
int main()
{
DWORD scrote[] = { 1, 2, 3 };

__asm
{
   mov eax, dword ptr [scrote]
   mov ecx, dword ptr [scrote + 4]
   mov edx, dword ptr [scrote + 8]
   nop

}

return 0;
}

OK this mov eax, dword ptr [scrote] will put a pointer in scrote.

i dont need that i need to state the real value instead of a pointer to first data.

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hcavolsdsadgadsg
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Reputation: 26

Joined: 11 Jun 2007
Posts: 5801

Posted: Tue Jul 13, 2010 7:54 pm Post subject:

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the array decays into a pointer, yes.

eax will be 1, not the address of scrote.

same as doing something like:

Code:

#include <Windows.h>
int main()
{
DWORD scrote[] = { 1, 2, 3 };
DWORD butt;

butt = *scrote;

return 0;
}

but i'm not entirely sure what you're trying to do anyway

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gunminiho
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Joined: 15 Dec 2008
Posts: 144
Location: peru

Posted: Tue Jul 13, 2010 9:02 pm Post subject:

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slovach wrote:

the array decays into a pointer, yes.

eax will be 1, not the address of scrote.

same as doing something like:

Code:

#include <Windows.h>
int main()
{
DWORD scrote[] = { 1, 2, 3 };
DWORD butt;

butt = *scrote;

return 0;
}

but i'm not entirely sure what you're trying to do anyway

holy crap

Laughing

Laughing

Laughing

Laughing

this doesn't worked on Delphi xD!!

and works on C++ Very Happy

Very Happy

!!!!! <3333333333333333333333

i was lazy to test it still <33333

im trying to make a item filter

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hcavolsdsadgadsg
I'm a spammer

Reputation: 26

Joined: 11 Jun 2007
Posts: 5801

Posted: Wed Jul 14, 2010 3:46 am Post subject:

it's just dereferencing the pointer if you wanted to move the address into eax, you could use the lea instruction.

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