安装全局消息钩子实现dll窗体程序注入

说明{
     通过设置全局消息钩子来实现dll注入，然后窗体有相关消息请求的时候就会自动加载注入dll，
然后在入口处做处理就可以了。注入方式简单很多，比代码注入和lsp等注入都简单，就不解释了。
这个也可以传递不同的劫持类型来进行键盘按键记录等。
}
注意{
    1.dll注入期间注入程序不可以退出，否则dll内核句柄有可能被释放。
    2.注意32位和64位注入问题

}

DLL调用
/*
HMODULE h = LoadLibrary(L"xx.dll");
_SetHook SetHook = (_SetHook)GetProcAddress(h,"SetHook");
_UnHook UnHook = (_UnHook)GetProcAddress(h,"UnHook");

SetHook();

Sleep(10000);

UnHook();

CloseHandle(h);
*/

//DLL相关代码

#include <windows.h>
#include <tlhelp32.h>
#include <Psapi.h>
#pragma comment(lib,"psapi.lib")

#pragma data_seg("Yrrehs")
HHOOK HT = NULL;
#pragma data_seg()

HINSTANCE DLLhinst = NULL;

LRESULT CALLBACK CProc(int nCode,WPARAM wParam,LPARAM lParam){
	return CallNextHookEx(HT,nCode,wParam,lParam);
}

//安装钩子
extern "C" __declspec(dllexport) BOOL SetHook(){
	HT = SetWindowsHookEx(WH_CALLWNDPROC,CProc,DLLhinst,0);
	if(HT == NULL){
		return false;
	}
	return true;
}

//卸载钩子
extern "C" __declspec(dllexport) BOOL UnHook(){
	BOOL HM_BOOL = FALSE;
	if(HT != NULL){
		HM_BOOL = UnhookWindowsHookEx(HT);
	}
	return HM_BOOL;
}

//获得进程名
wchar_t* GetProcessName(DWORD processID){
	HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,FALSE,processID);
	wchar_t *procName = new wchar_t[MAX_PATH];
	GetModuleFileNameEx(hProcess,NULL,procName,MAX_PATH);
	CloseHandle(hProcess);
	return procName;
}

//获得进程名
wchar_t* GetProcessName(wchar_t *FileName){
	size_t len = wcslen(FileName);
	size_t i = len-1;
	for(;i>=0;i--){
		if(FileName[i] == L'\'){
			break;
		}
	}
	wchar_t *temp = FileName + i + 1;
	return temp;
}

BOOL WINAPI DllMain(HINSTANCE hinstDll,DWORD fdwReason,LPVOID lpvReserved){
	DLLhinst = hinstDll;
	if(DLL_PROCESS_ATTACH == fdwReason){
		wchar_t *procName = GetProcessName(GetCurrentProcessId());
		if(_wcsicmp(L"xxx.exe",GetProcessName(procName))==0){
			//XXXXXX
		}
	}
	if(DLL_PROCESS_DETACH == fdwReason){

	}
	return TRUE;
}