C++进程注入

#include "stdafx.h"

#include <windows.h>
#include <string>
#include "stdio.h"
#include <iostream>
using namespace std;

#define DEF_BUF_SIZE 1024

// 用于存储注入模块DLL的路径全名
char szDllPath[DEF_BUF_SIZE] = {0} ;

// 使用远程线程向指定ID的进程注入模块
BOOL InjectModuleToProcessById ( DWORD dwProcessId )
{
 if ( dwProcessId == 0 )
  return FALSE ;

 // 打开进程
 HANDLE hProcess = OpenProcess ( PROCESS_ALL_ACCESS, FALSE, dwProcessId ) ;
 if ( hProcess == NULL )
  return FALSE ;

 //申请存放文件名的空间
 UINT nLen = (UINT)strlen ( szDllPath ) + 1;
 LPVOID lpRemoteDllName = VirtualAllocEx ( hProcess, NULL, nLen, MEM_COMMIT, PAGE_READWRITE ) ;
 if ( lpRemoteDllName == NULL )
 {
  printf ( "[ERROR]VirtualAllocEx(%d)\n", GetLastError() ); 
  return FALSE ;
 }

 //把dll文件名写入申请的空间
 if ( WriteProcessMemory ( hProcess, lpRemoteDllName, szDllPath, nLen, NULL) == FALSE )
 {
  printf ( "[ERROR]WriteProcessMemory(%d)\n", GetLastError() ); 
  return FALSE ;
 }

 //获取动态链接库函数地址
 HMODULE hModule = GetModuleHandle ( L"kernel32.dll" ) ;
 LPTHREAD_START_ROUTINE fnStartAddr = ( LPTHREAD_START_ROUTINE )GetProcAddress(hModule,"LoadLibraryA") ;
 if ( (DWORD)fnStartAddr == 0 )
 {
  printf ( "[ERROR]GetProcAddress(%d)\n", GetLastError() ); 
  return FALSE ;
 }

 //创建远程线程
 HANDLE hRemoteThread = CreateRemoteThread ( hProcess, NULL, 0,fnStartAddr, lpRemoteDllName, 0, NULL ) ;
 if ( hRemoteThread == NULL )
 {
  printf ( "[ERROR]CreateRemoteThread(%d)\n", GetLastError() ); 
  return FALSE ;
 }

 // 等待远程线程结束
 if ( WaitForSingleObject ( hRemoteThread, INFINITE ) != WAIT_OBJECT_0 )
 {
  printf ( "[ERROR]WaitForSingleObject(%d)\n", GetLastError() ); 
  return FALSE ;
 }

 CloseHandle ( hRemoteThread ) ;
 CloseHandle ( hModule ) ;
 CloseHandle ( hProcess ) ;
 return TRUE ;
}

int _tmain(int argc, _TCHAR* argv[])
{
 // 取得当前工作目录路径
 GetCurrentDirectoryA ( DEF_BUF_SIZE, szDllPath ) ;

 // 生成注入模块DLL的路径全名
 strcat ( szDllPath, "\\DLL.dll" ) ;

 DWORD dwProcessId = 0 ;
 // 接收用户输入的目标进程ID
 while ( printf ( "请输入目标进程ID：" ) && cin >> dwProcessId && dwProcessId > 0 ) 
 {
  BOOL bRet = InjectModuleToProcessById ( dwProcessId ) ;
  printf ( bRet ? "注入成功！\n":"注入失败！\n") ;
 }
 return 0;
}