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我正在尝试使用 EasyHook 来检测本机 LoadLibrary 调用。

它确实检测到库的加载，但是该过程会导致冻结。这是因为下面的LoadLibrary_Hook方法无法加载 dll 或库，因为它返回 0 IntPtr（可能找不到库。）。

我什至尝试将事件设置为“void”类型，但随后进程简单地崩溃了，这可能是因为 EasyHook 期望我返回一个值来覆盖函数。

有没有办法让我返回要加载的确切需要的库，或者只是简单地获取正在加载的库的名称，而无需手动加载库？

（还有这样的名字在加载过程中：瑮汤⹬汤l逦逦仇嗿謘ౕ㍓谋四襗ﱝ嶉觬嶉觰嶉㯨࿓ﾄăࡅ쌻萏Ͽ䶋㬔瓋㤉ᡝ萏ϯ팻Ѵ᪉ᢉ疋㬐࿳ă㬀瓋謇ᡅᦉᢉ綋㬜 有点奇怪...）

private static LocalHook hook;

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

[DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr LoadLibrary(string lpFileName);

[DllImport("kernel32.dll", CharSet=CharSet.Ansi, ExactSpelling=true, SetLastError=true)]
public static extern IntPtr GetProcAddress(IntPtr handle, string varormethodname);

[UnmanagedFunctionPointer(CallingConvention.StdCall, CharSet = CharSet.Unicode, SetLastError = true)]
public delegate IntPtr LoadLibraryDelegate(string lpFileName);

public TestHook()
{
    IntPtr kernel32 = GetModuleHandle("kernel32.dll");
    Logger.Log("Kernel: " + kernel32);
    IntPtr address = GetProcAddress(kernel32, "LoadLibraryA");
    Logger.Log("Address: " + address);

    hook = LocalHook.Create(address,
    new LoadLibraryDelegate(LoadLibrary_Hook),
    null);
    hook.ThreadACL.SetExclusiveACL(new Int32[] {0});

    //RemoteHooking.WakeUpProcess();
}


public IntPtr LoadLibrary_Hook(string lpFileName)
{
    Logger.Log("File load: " + lpFileName);
    return LoadLibrary(lpFileName);
}
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1 回答 1

0

解决方案是使用原始函数地址调用原始方法：

public IntPtr LoadLibrary_Hook(string lpFileName)
{
    Logger.Log("File load: " + lpFileName);
    LoadLibraryDelegate origMethod = (LoadLibraryDelegate)Marshal.GetDelegateForFunctionPointer(LoadLibraryAddress, typeof(LoadLibraryDelegate));
    return origMethod(lpFileName);
}
于 2018-07-31T12:36:07.147 回答