如何访问其他程序内存中的结构？

Question

我知道如何在C#中导入和使用read/writeprocessmomory.我正在研究游戏培训师.我需要"直接"访问转换为struct的其他进程内存.我可以使用readprocessmemory或writeprocessmemory,但这需要花费很多时间来实现许多结构.

C++中有这种结构:

class CRenderer
{
public:
    char unknown0[1692]; //0x0000
    BYTE ID07D54FC8; //0x069C  
    BYTE drawObjects; //0x069D  
    BYTE drawDeferred; //0x069E  
    BYTE drawParticles; //0x069F  
    BYTE ID07E1CA70; //0x06A0  
    BYTE drawBundledMeshes; //0x06A1  
    BYTE drawStaticMeshes; //0x06A2  
    BYTE drawSkinnedMeshes; //0x06A3  
    BYTE drawRoads; //0x06A4  
    BYTE drawTerrain; //0x06A5  
    BYTE drawUnderGrowth; //0x06A6  
    BYTE drawOverGrowth; //0x06A7  
    BYTE drawNameTags; //0x06A8  
    BYTE drawTrees; //0x06A9  
    BYTE ID07E1CE70; //0x06AA  
    BYTE ID07E1CDF0; //0x06AB  
    BYTE DrawFPS; //0x06AC  
    BYTE ID07E1CEF0; //0x06AD  
    BYTE ID07E1C8F0; //0x06AE  
    BYTE ID07E1C870; //0x06AF  
    BYTE drawGraphs; //0x06B0  
    BYTE ID07D55048; //0x06B1  
    BYTE drawSkyDome; //0x06B2  
    BYTE drawSunFlare; //0x06B3  
    BYTE drawPostProduction; //0x06B4  
    BYTE ID07D550C8; //0x06B5  
    char unknown1718[6534]; //0x06B6
};//Size=0x203C(8252)

如何在C#中表示该结构？这样做最简单的方法是什么:

//C++
DWORD RendererBase = (DWORD)GetModuleHandle( "RendDx9.dll" ); //Gets the base address of RenDX9.dll
DWORD RendererOffset = RendererBase + 0x23D098; //Static address
CRenderer *cRenderer = *(CRenderer**)RendererOffset; //Points to the class using the static offset

cRenderer->drawSkyDome = 0; //No Sky
cRenderer->DrawFPS = 1; //Show FPS

在C#中,我希望能够像这样使用它:

cRenderer.drawSkyDome = 0; //No Sky
cRenderer.DrawFPS = 1; //Show FPS

如何在我的C#应用​​程序中使用其他进程内存作为结构？

Answer 1

如果您需要一个与非托管程序二进制兼容的结构,则可以使用该[StructLayout]属性及其朋友.例如,在您的情况下,它将是这样的:

[DllImport("kernel32.dll", CharSet=CharSet.Auto)]
public static extern IntPtr GetModuleHandle(string lpModuleName);

[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct RendererData
{
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1692)]
    public byte[] Unknown;
    public byte ID07D54FC8;
    public byte DrawObjects;
    public byte DrawDeferred;
    // ...
    public byte DrawFPS;
    // ...
    public byte DrawSkyDome;
    // ...
}

void Main()
{
    IntPtr rendererBase = GetModuleHandle("RendDx9.dll");
    if (rendererBase == IntPtr.Zero)
    {
        throw new InvalidOperationException("RendDx9.dll not found");
    }
    IntPtr rendererAddr = IntPtr.Add(rendererBase, 0x23D098);

    var data = new RendererData();
    Marshal.PtrToStructure(rendererAddr, data);

    data.DrawSkyDome = 0;
    data.DrawFPS = 1;

    Marshal.StructureToPtr(data, rendererAddr, false);
}

我不确定你是否能够以这种方式直接访问其他模块的数据,但你可以用ReadProcessMemory/ 替换方法WriteProcessMemory,基本原理仍然可以保留(只有这一次,你需要管理内存)为结构).