/// <summary>
/// Makes the exe not to open console.
/// </summary>
public static bool ProcessFile(string exeFilePath)
{
Console.WriteLine("NSubsys: Subsystem Changer for Windows PE files.");
Console.WriteLine($"NSubsys: Target EXE {exeFilePath}.");
using (var peFile = new PeUtility(exeFilePath))
{
SubSystemType subsysVal;
var subsysOffset = peFile.MainHeaderOffset;
var headerType = peFile.Is32BitHeader ? typeof(IMAGE_OPTIONAL_HEADER32) : typeof(IMAGE_OPTIONAL_HEADER64);
if (peFile.Is32BitHeader)
{
subsysVal = (SubSystemType)peFile.OptionalHeader32.Subsystem;
}
else
{
subsysVal = (SubSystemType)peFile.OptionalHeader64.Subsystem;
}
subsysOffset += Marshal.OffsetOf(headerType, "Subsystem").ToInt32();
switch (subsysVal)
{
case SubSystemType.IMAGE_SUBSYSTEM_WINDOWS_GUI:
Console.WriteLine("NSubsys: Executable file is already a Win32 App!");
return(true);
case SubSystemType.IMAGE_SUBSYSTEM_WINDOWS_CUI:
Console.WriteLine("NSubsys: Console app detected...");
Console.WriteLine("NSubsys: Converting...");
var subsysSetting = BitConverter.GetBytes((ushort)SubSystemType.IMAGE_SUBSYSTEM_WINDOWS_GUI);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(subsysSetting);
}
if (peFile.Stream.CanWrite)
{
peFile.Stream.Seek(subsysOffset, SeekOrigin.Begin);
peFile.Stream.Write(subsysSetting, 0, subsysSetting.Length);
Console.WriteLine("NSubsys: Conversion Complete...");
}
else
{
Console.WriteLine("NSubsys: Can't write changes!");
Console.WriteLine("NSubsys: Conversion Failed...");
}
return(true);
default:
Console.WriteLine($"NSubsys: Unsupported subsystem : {Enum.GetName(typeof(SubSystemType), subsysVal)}.");
return(false);
}
}
}
/// <summary>
/// Makes the exe not to open console.
/// </summary>
public static bool ProcessFile(string exeFilePath)
{
Console.WriteLine($"{nameof(NSubsys)}: Subsystem Changer for Windows PE files.");
Console.WriteLine($"{nameof(NSubsys)}: Target EXE {exeFilePath}.");
using (var peFile = new PeUtility(exeFilePath))
{
SubSystemType subsysVal;
var subsysOffset = peFile.MainHeaderOffset;
subsysVal = (SubSystemType)peFile.OptionalHeader.Subsystem;
subsysOffset += Marshal.OffsetOf <ImageOptionalHeader>(nameof(ImageOptionalHeader.Subsystem)).ToInt32();
switch (subsysVal)
{
case SubSystemType.ImageSubSystemWindowsGui:
Console.WriteLine($"{nameof(NSubsys)}: Executable file is already a Win32 App!");
return(true);
case SubSystemType.ImageSubSystemWindowsCui:
Console.WriteLine($"{nameof(NSubsys)}: Console app detected...");
Console.WriteLine($"{nameof(NSubsys)}: Converting...");
var subsysSetting = BitConverter.GetBytes((ushort)SubSystemType.ImageSubSystemWindowsGui);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(subsysSetting);
}
if (peFile.Stream.CanWrite)
{
peFile.Stream.Seek(subsysOffset, SeekOrigin.Begin);
peFile.Stream.Write(subsysSetting, 0, subsysSetting.Length);
Console.WriteLine($"{nameof(NSubsys)}: Conversion Complete...");
}
else
{
Console.WriteLine($"{nameof(NSubsys)}: Can't write changes!");
Console.WriteLine($"{nameof(NSubsys)}: Conversion Failed...");
}
return(true);
default:
Console.WriteLine($"{nameof(NSubsys)}: Unsupported subsystem number: {subsysVal}.");
return(false);
}
}
}
