making IP address spoofing using sharp-pcap on c# ???

Question

I will use sharp-pcap framework to make my spoofing program

so I need to edit my machine IP address of the packet with another IP on the source address field

I found some example on sharp-pcap project but I don't know how can I edit or change the source address field of sending packet

here sample code for sending random packets:

byte[] bytes = GetRandomPacket();

private static byte[] GetRandomPacket()
    {
        byte[] packet = new byte[200];
        Random rand = new Random();
        rand.NextBytes( packet );
        return packet;
    }

-

    device.SendPacket( bytes );

Answer 1

Try Pcap.Net instead.

Here is how you build a simple IPv4 packet with specific source and destination addresses and a custom payload in Pcap.Net:

Packet packet =
    PacketBuilder.Build(DateTime.Now,
                        new EthernetLayer
                            {
                                Source = new MacAddress("11:22:33:44:55:66"),
                                Destination = new MacAddress("11:22:33:44:55:67"),
                            },
                        new IpV4Layer
                            {
                                Source = new IpV4Address("1.2.3.4"),
                                Destination = new IpV4Address("1.2.3.5"),
                                Ttl = 64,
                                Identification = 100,
                            },
                        new PayloadLayer
                            {
                                Data = new Datagram(new byte[] {1, 2, 3, 4})
                            });