public static bool CreateProcessAsSystem(string ApplicationName, int Session, string Desktop, bool Hidden, WinAPI.PROCESS_PRIORITY Priority, bool Suspended, out WinAPI.ProcessInformation ProcInfo)
{
ProcInfo = new WinAPI.ProcessInformation();
IntPtr hToken = IntPtr.Zero;
var phandle = WinAPI.OpenProcess(WinAPI.ProcessAccess.All, false, (uint)Process.GetCurrentProcess().Id);
try {
WinAPI.OpenProcessToken(phandle, (int)WinAPI.TokenAccess.All, ref hToken);
} catch {
return(false);
}
try {
IntPtr hDupToken;
WinAPI.DuplicateTokenEx(hToken,
WinAPI.TokenAccess.All,
IntPtr.Zero,
WinAPI.SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation,
WinAPI.TokenType.Primary, out hDupToken);
Marshal.Release(hToken);
hToken = hDupToken;
} catch {
return(false);
}
var sessPtr = new IntPtr(Session);
WinAPI.NtSetInformationToken(hToken, WinAPI.TOKEN_INFORMATION_CLASS.TokenSessionId, ref sessPtr, sizeof(int));
var startupInfo = new WinAPI.StartupInfo();
IntPtr environment;
WinAPI.CreateEnvironmentBlock(out environment, hToken, false);
startupInfo.Desktop = Desktop; //"WinSta0\\Default";
WinAPI.ProcessCreationFlags priorityFlag;
if (Priority == WinAPI.PROCESS_PRIORITY.REAL_TIME)
{
priorityFlag = WinAPI.ProcessCreationFlags.RealtimePriorityClass;
}
else if (Priority == WinAPI.PROCESS_PRIORITY.HIGH)
{
priorityFlag = WinAPI.ProcessCreationFlags.HighPriorityClass;
}
else if (Priority == WinAPI.PROCESS_PRIORITY.IDLE)
{
priorityFlag = WinAPI.ProcessCreationFlags.IdlePriorityClass;
}
else
{
priorityFlag = WinAPI.ProcessCreationFlags.NormalPriorityClass;
}
try {
WinAPI.ClientId clientId;
ProcInfo = WinAPI.CreateWin32(hToken,
null,
ApplicationName,
false,
WinAPI.ProcessCreationFlags.CreateUnicodeEnvironment
| (Hidden ? WinAPI.ProcessCreationFlags.CreateNoWindow : 0x0)
| (Suspended ? WinAPI.ProcessCreationFlags.CreateSuspended : 0x0)
| priorityFlag,
environment,
null,
startupInfo,
out clientId);
Marshal.Release(ProcInfo.ProcessHandle);
Marshal.Release(ProcInfo.ThreadHandle);
} catch {
return(false);
} finally {
WinAPI.RtlDestroyEnvironment(environment);
}
return(true);
}