private static void receiver(Packet packet)
{
//if (packet.IpV4.Icmp == null || packet.IpV4.Icmp.MessageType != IcmpMessageType.EchoReply) return;
IP source = new IP(packet.Ethernet.IpV4.Source.ToString());
if (!TCPMode)
{
Console.WriteLine("icmp reply from {0}", source.ToString());
}
else
{
Console.WriteLine("SYN reply from {0}", source.ToString());
}
File.AppendAllText(outPath, source.ToString() + "\n");
}
static void Main(string[] args)
{
if (!parseArgs(args))
{
return;
}
preparePcap();
new Thread(() => { communicator.ReceivePackets(0, receiver); }).Start();
if (!RandomMode)
{
var end = endIP++;
for (IP i = startIP; i < end; i++)
{
if (!TCPMode)
{
Console.WriteLine("Sending ICMP to {0}", i);
SendICMP(i.ToString());
}
else
{
Console.WriteLine("Sending TCP SYN to {0}", i);
SendSYN(i.ToString());
}
Thread.Sleep(delay);
}
}
else
{
for (int x = 0; x < RandomLimit; x++)
{
string i = string.Format("{0}.{1}.{2}.{3}", rand.Next(1, 240), rand.Next(1, 255), rand.Next(1, 255), rand.Next(1, 255));
if (!TCPMode)
{
Console.WriteLine("Sending ICMP to {0}", i);
SendICMP(i);
}
else
{
Console.WriteLine("Sending TCP SYN to {0}", i);
SendSYN(i);
}
Thread.Sleep(delay);
}
}
Thread.Sleep(1000);
Console.WriteLine("Done.");
}
private static bool parseArgs(string[] args)
{
if (args.Length < 4)
{
Console.WriteLine("Usage: discovery <start ip> <end ip> <delay (ms)> <output>");
Console.WriteLine("Example: discovery 1.1.1.1 1.1.2.1 100 out.txt");
Console.WriteLine("For Random Scanning:");
Console.WriteLine("Example: discovery R <Number Of IPs> 100 out.txt");
Console.WriteLine("For TCP Scanning:");
Console.WriteLine("Example: discovery 1.1.1.1 1.1.2.1 100 out.txt <port> -t");
return(false);
}
try
{
if (args[0].ToLower().StartsWith("r"))
{
RandomMode = true;
RandomLimit = int.Parse(args[1]);
}
else
{
startIP = new IP(args[0]);
endIP = new IP(args[1]);
}
delay = int.Parse(args[2]);
outPath = args[3];
if (args.Length == 6)
{
TCPMode = true;
TCPPort = int.Parse(args[4]);
}
}
catch (Exception ex)
{
Console.WriteLine("Invalid args. {0}\n", ex.Message);
return(false);
}
return(true);
}
private static void receiver(Packet packet)
{
//if (packet.IpV4.Icmp == null || packet.IpV4.Icmp.MessageType != IcmpMessageType.EchoReply) return;
IP source = new IP(packet.Ethernet.IpV4.Source.ToString());
if (!TCPMode)
{
Console.WriteLine("icmp reply from {0}", source.ToString());
}
else
{
Console.WriteLine("SYN reply from {0}", source.ToString());
}
File.AppendAllText(outPath, source.ToString() + "\n");
}
private static bool parseArgs(string[] args)
{
if (args.Length < 4)
{
Console.WriteLine("Usage: discovery <start ip> <end ip> <delay (ms)> <output>");
Console.WriteLine("Example: discovery 1.1.1.1 1.1.2.1 100 out.txt");
Console.WriteLine("For Random Scanning:");
Console.WriteLine("Example: discovery R <Number Of IPs> 100 out.txt");
Console.WriteLine("For TCP Scanning:");
Console.WriteLine("Example: discovery 1.1.1.1 1.1.2.1 100 out.txt <port> -t");
return false;
}
try
{
if (args[0].ToLower().StartsWith("r"))
{
RandomMode = true;
RandomLimit = int.Parse(args[1]);
}
else
{
startIP = new IP(args[0]);
endIP = new IP(args[1]);
}
delay = int.Parse(args[2]);
outPath = args[3];
if (args.Length == 6)
{
TCPMode = true;
TCPPort = int.Parse(args[4]);
}
}
catch (Exception ex)
{
Console.WriteLine("Invalid args. {0}\n", ex.Message);
return false;
}
return true;
}