Program.cs

using System;
using System.Diagnostics;

namespace MyApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Unreal Pak.exe Path");
            string UnrealPakEXE_path = Console.ReadLine();
            Console.WriteLine("unpack (0) or pack? (1)");
            if (int.TryParse(Console.ReadLine(), out int result))
            {
                if (result == 0)
                {
                    Console.WriteLine("*.pak path");
                    string UnrealGamePak = Console.ReadLine();
                    Process.Start("cmd.exe", $@"/c ""{UnrealPakEXE_path}"" {UnrealGamePak} -Extract {Path.GetDirectoryName(UnrealGamePak) + @"\All_of_the_Game"}");
                }
                if (result == 1)
                {
                    Console.WriteLine("decompiled pak folder");
                    string DecompiledPakFolder = Console.ReadLine();
                    string filePath = "DataToPack.txt";
                    string[] dd = Directory.GetDirectories(DecompiledPakFolder);
                    string GameNamePath = dd.FirstOrDefault(item => !item.Contains("Engine"));
                    string GameName = Path.GetFileName(GameNamePath);
                    using (var writer = new StreamWriter(filePath, append: true))
                    {
                        writer.WriteLine(@$"""{DecompiledPakFolder}\Engine\*"" ""../../../Engine/""");
                        writer.WriteLine(@$"""{DecompiledPakFolder}\{GameName}\*"" ""../../../{GameName}/""");
                    }

                    string basePath = Environment.CurrentDirectory;
                    string DataToPackPath = Path.GetFullPath(filePath, basePath);

                    Process.Start("cmd.exe", $@"/c ""{UnrealPakEXE_path}"" {Path.GetDirectoryName(DecompiledPakFolder) + @$"\{GameName}-WindowsNoeditor-Repackaged.pak"} -Create={DataToPackPath}");
                }
            }
        }
    }
}