Find D3D device pointer programmaticaly?

Hey! How can i find the D3D device pointer (which is stored in memory, and can be found with Olly easily) programmaticaly?
I already tried with creating a new device and grabbing his address.. But I always get a dynamic address, and not the real pointer :S

So how to find it? Is it even possible to get it programmaticaly?

mac

Originally Posted by meldino

Hey! How can i find the D3D device pointer (which is stored in memory, and can be found with Olly easily) programmaticaly?
I already tried with creating a new device and grabbing his address.. But I always get a dynamic address, and not the real pointer :S

So how to find it? Is it even possible to get it programmaticaly?

mac

Very much is this possible. The member functions of the class actually take the pointer as the first argument. So in reality this:

Code:

HRESULT DrawIndexedPrimitive(
  [in]  D3DPRIMITIVETYPE Type,
  [in]  INT BaseVertexIndex,
  [in]  UINT MinIndex,
  [in]  UINT NumVertices,
  [in]  UINT StartIndex,
  [in]  UINT PrimitiveCount
);

Is actually:

Code:

HRESULT DrawIndexedPrimitive(
  [in]  LPDIRECT3DDEVICE9 D3DDevice,
  [in]  D3DPRIMITIVETYPE Type,
  [in]  INT BaseVertexIndex,
  [in]  UINT MinIndex,
  [in]  UINT NumVertices,
  [in]  UINT StartIndex,
  [in]  UINT PrimitiveCount
);

So hook any member function of IDirect3DDevice9 in d3d9.dll and you will get the D3D Device pointer.

Code:

DWORD** FindDevice(DWORD base, DWORD len)
{
	unsigned long i = 0, n = 0;

	for( i = 0; i < len-0xD; i++ )
	{
		if(*(BYTE *)(base+i+0x00)==0xC7)
			n++;
		if(*(BYTE *)(base+i+0x01)==0x06)
			n++;
		if(*(BYTE *)(base+i+0x06)==0x89)
			n++;
	    	if(*(BYTE *)(base+i+0x07)==0x86)
			n++;
	        if(*(BYTE *)(base+i+0x0C)==0x89)
			n++;
		if(*(BYTE *)(base+i+0x0D)==0x86)
			n++;

		if(n == 6)
		{ 
			return (DWORD**)(base + i + 2);
		}
		n = 0;
	}
	return NULL;
}

Call it with d3d9.dll's address until address + length

Got it already

Hooked endscene and logged the pointer
nvm, ty guys!

Originally Posted by meldino

Got it already

Hooked endscene and logged the pointer
nvm, ty guys!

The pointer will change no?

Find D3D device pointer programmaticaly?

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