软件保护中强制关电源

最近看一个大牛的破解日志，软件中有这样一个小功能：如果检测到被od等调试软件加载，就会触发强制切断电源关机。网上找到代码如下:

#include <windows.h>
const unsigned int SE_SHUTDOWN_PRIVILEGE = 0x13;
int main()
{
  HMODULE hDll = ::LoadLibrary("ntdll.dll");
  typedef int (* type_RtlAdjustPrivilege)(int, bool, bool, int*);
  typedef int (* type_ZwShutdownSystem)(int);
  type_RtlAdjustPrivilege RtlAdjustPrivilege = (type_RtlAdjustPrivilege)GetProcAddress(hDll, "RtlAdjustPrivilege");
  type_ZwShutdownSystem ZwShutdownSystem = (type_ZwShutdownSystem)GetProcAddress(hDll, "ZwShutdownSystem");
  int nEn = 0;
  int nResult = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE, true, true, &nEn);
  if(nResult == 0x0c000007c)
  {
    nResult = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE, true, false, &nEn);
  }
  nResult = ZwShutdownSystem(2);
  FreeLibrary(hDll);
  return 0;
}

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