今天无意之中在网上看到关于DLL注入的文章，感觉写的真的很好，代码很实用！！所以Ctrl+C,Ctrl+V！给大家学习学习~~~~
void InjectDLL(DWORD PID,char *Path)
{
DWORD dwSize;
HANDLE hProcess=OpenProcess(PROCESS_ALL_ACCESS,false,PID);
dwSize=strlen(Path)+1;
LPVOID lpParamAddress=VirtualAllocEx(hProcess,0,dwSize,PARITY_SPACE,PAGE_EXECUTE_READWRITE);
WriteProcessMemory(hProcess,lpParamAddress,(PVOID)Path,dwSize,NULL);
HMODULE hModule=GetModuleHandleA("kernel32.dll");
LPTHREAD_START_ROUTINE lpStartAddress=(LPTHREAD_START_ROUTINE)GetProcAddress(hModule,"LoadLibraryA");
HANDLE hThread=CreateRemoteThread(hProcess,NULL,0,lpStartAddress,lpParamAddress,0,NULL);
WaitForSingleObject(hThread,1000);
CloseHandle(hThread);
}
另一种是直接注入代码，代码如下：
//函数名：InjectCode
//功能：封装远程注入的函数
//参数：进程ID
//参数：被注入函数指针<函数名>
//参数：参数
//参数：参数长度
//**************************************************************************************
void InjectCode(DWORD dwProcId,LPVOID mFunc, LPVOID Param, DWORD ParamSize)
{
HANDLE hProcess;//远程句柄
LPVOID mFuncAddr;//申请函数内存地址
LPVOID ParamAddr;//申请参数内存地址
HANDLE hThread; //线程句柄
DWORD NumberOfByte; //辅助返回值
CString str;
//打开被注入的进程句柄
hProcess = OpenProcess(PROCESS_ALL_ACCESS,FALSE,dwProcId);
//申请内存
mFuncAddr = VirtualAllocEx(hProcess,NULL,128,MEM_COMMIT,PAGE_EXECUTE_READWRITE);
ParamAddr = VirtualAllocEx(hProcess,NULL,ParamSize,MEM_COMMIT,PAGE_EXECUTE_READWRITE);
//写内存
WriteProcessMemory(hProcess,mFuncAddr,mFunc,128, &NumberOfByte);
WriteProcessMemory(hProcess,ParamAddr,Param,ParamSize, &NumberOfByte);
//创建远程线程
hThread = CreateRemoteThread(hProcess,NULL,0,(LPTHREAD_START_ROUTINE)mFuncAddr,
ParamAddr,0,&NumberOfByte);
WaitForSingleObject(hThread, INFINITE); //等待线程结束
//释放申请有内存
VirtualFreeEx(hProcess,mFuncAddr,128,MEM_RELEASE);
VirtualFreeEx(hProcess,ParamAddr,ParamSize,MEM_RELEASE);
//释放远程句柄
CloseHandle(hThread);
CloseHandle(hProcess);
}
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