C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PES20Patcher_nesa24
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


        #region file name
        OpenFileDialog ofd = new OpenFileDialog();
        string filename = "PES2020.exe";
        string shortname = "";
        string patchingfile = "";
        string exeversion = "";

        #endregion file name


        #region gameversions
        int gamever;
        int gamesub;
        int game;
        string gamename = "";
        string gamesubversion = "";
        #endregion

        private void ExitBTN_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        public void CheckGP(string file)
        {
            if (File.Exists(Directory.GetCurrentDirectory() + "\\" + filename))
            {
                BinaryReader br = new BinaryReader(File.Open(Directory.GetCurrentDirectory() + "\\" + filename, FileMode.Open, FileAccess.Read));

                byte[] kon = {0x96, 0x42};
                byte[] n24 = {0x65, 0x55};
                byte[] gpv = new byte[2];
                br.BaseStream.Position = 0x02565A56;
                gpv = br.ReadBytes(2);
                if (gpv[0]==kon[0])
                {
                    exeversion = "KONAMI";

                }
                if (gpv[0] == n24[0])
                {
                    exeversion = "nesa24";

                }
                br.Close();
                label2.Text= "Gameplay: " + exeversion;

            }
            else
            {
                MessageBox.Show("Copy PATCHER to PES2020 main folder!");
                MessageBox.Show("Tool will close!");
                this.Close();
            }
        }


        public void patch(string file)
        {
        BinaryWriter bw = new BinaryWriter(File.Open(Directory.GetCurrentDirectory()+"\\"+filename, FileMode.Open, FileAccess.Write));
        bw.BaseStream.Position = 0x02565A54;
        byte[] patch1 = { 0x00, 0x00, 0x65, 0x55, 0x00, 0x00, 0xF0, 0x42, 0x00, 0x00, 0x34, 0x43 };
        bw.Write(patch1);


        bw.BaseStream.Position = 0x0257FE0C;
        byte[] patch2 = { 0x99, 0x99, 0xB9, 0x3F, 0x53, 0x63, 0x72, 0x69, 0x70, 0x74, 0x42, 0x69, 0x6E, 0x64, 0x00, 0x00 };
        bw.Write(patch2);



        bw.BaseStream.Position = 0x0258888C;
        byte[] patch3 = { 0xCD, 0xCC, 0x0C, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x40, 0x00, 0x00, 0x88, 0x40 };
        bw.Write(patch3);



        bw.BaseStream.Position = 0x02588D20;
        byte[] patch4 = { 0x00, 0x00, 0x96, 0x45, 0x00, 0x00, 0xF0, 0x42, 0x00, 0x00, 0xC8, 0x42 };
        bw.Write(patch4);


        bw.BaseStream.Position = 0x02588D74;
        byte[] patch5 = { 0x00, 0x00, 0x96, 0x45, 0x00, 0x00, 0xB4, 0x41, 0x00, 0x00, 0xB4, 0x41 };
        bw.Write(patch5);



        bw.BaseStream.Position = 0x02588D9C;
        byte[] patch6 = { 0x00, 0x00, 0x96, 0x45, 0x00, 0x00, 0x70, 0x42, 0x00, 0x00, 0xD2, 0x42, 0x00, 0x00, 0x70, 0x41 };
        bw.Write(patch6);

        bw.BaseStream.Position = 0x03433FE8;
        byte[] patch7 = { 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0xA8, 0xFF, 0xFF, 0x00, 0xA8, 0xFF, 0xFF, 0x00, 0xA8, 0xFF, 0xFF, 0xF8, 0x44, 0x07, 0xFF };
        bw.Write(patch7);

        bw.BaseStream.Position = 0x0349ED14;
        byte[] patch8 = { 0x00, 0x00, 0xA0, 0x40, 0x00, 0x00, 0x80, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42 };
        bw.Write(patch8);


        bw.Close();

        exeversion = "nesa24";
        label2.Text = "Gameplay: " + exeversion;

        }


        public void konami(string file)
        {
            BinaryWriter bw = new BinaryWriter(File.Open(Directory.GetCurrentDirectory() + "\\" + filename, FileMode.Open, FileAccess.Write));


            bw.BaseStream.Position = 0x02565A54;
            byte[] patch1 = { 0x00, 0x00, 0x96, 0x42, 0x00, 0x00, 0xF0, 0x42, 0x00, 0x00, 0x34, 0x43 };   //000096420000F04200003443
            bw.Write(patch1);


            bw.BaseStream.Position = 0x0257FE0C;
            byte[] patch2 = { 0x99, 0x99, 0xD9, 0x3F, 0x53, 0x63, 0x72, 0x69, 0x70, 0x74, 0x42, 0x69, 0x6E, 0x64, 0x00, 0x00 }; //9999D93F53637269707442696E640000
            bw.Write(patch2);



            bw.BaseStream.Position = 0x0258888C;
            byte[] patch3 = { 0x66, 0x66, 0xE6, 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x40, 0x00, 0x00, 0x88, 0x40 }; // 6666E63F000000000000204000008840
            bw.Write(patch3);



            bw.BaseStream.Position = 0x02588D20;
            byte[] patch4 = { 0x00, 0x00, 0x96, 0x42, 0x00, 0x00, 0xF0, 0x42, 0x00, 0x00, 0xC8, 0x42 };    //000096420000F0420000C842
            bw.Write(patch4);


            bw.BaseStream.Position = 0x02588D74;
            byte[] patch5 = { 0x00, 0x00, 0x96, 0x42, 0x00, 0x00, 0xB4, 0x41, 0x00, 0x00, 0xB4, 0x41 }; //000096420000B4410000B441
            bw.Write(patch5);



            bw.BaseStream.Position = 0x02588D9C;
            byte[] patch6 = { 0x00, 0x00, 0x96, 0x42, 0x00, 0x00, 0x70, 0x42, 0x00, 0x00, 0xD2, 0x42, 0x00, 0x00, 0x70, 0x41 };  //00009642000070420000D24200007041
            bw.Write(patch6);

            bw.BaseStream.Position = 0x03433FE8;
            byte[] patch7 = { 0x00, 0xA8, 0xFF, 0xFF, 0x00, 0xA8, 0xFF, 0xFF, 0x00, 0xA8, 0xFF, 0xFF, 0x00, 0xA8, 0xFF, 0xFF, 0x00, 0xA8, 0xFF, 0xFF }; //00A8FFFF00A8FFFF00A8FFFF00A8FFFF00A8FFFF
            bw.Write(patch7);


            bw.BaseStream.Position = 0x0349ED14;
            byte[] patch8 = { 0x00, 0x00, 0x00, 0x41, 0x00, 0x00, 0x80, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x42 }; //00000041000080400000000000000042
            bw.Write(patch8);


            bw.Close();

            exeversion = "KONAMI";
            label2.Text = "Gameplay: " + exeversion;
        }


        private void PatchBTN_Click(object sender, EventArgs e)
        {
            patch(Directory.GetCurrentDirectory() + "\\"+ filename);
            MessageBox.Show("Patched with nesa24 GP");
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            CheckGP(Directory.GetCurrentDirectory() + "\\" + filename);
        }

        private void button1_Click(object sender, EventArgs e)
        {
                konami(Directory.GetCurrentDirectory() + "\\" + filename);
                MessageBox.Show("Restored KONAMI GP");
        }

    }
}