Exemple #1
0
        void s_IpPacketSent(object sender, EventArgs e)
        {
            IPHeader ipHeader = (IPHeader)sender;

            if (ipHeader.ProtocolType == Protocol.Tcp)
            {
                try {
                    TCPHeader tcp = new TCPHeader(ipHeader.Data, ipHeader.MessageLength);
                    int       sourcePort;
                    if (int.TryParse(tcp.SourcePort, out sourcePort))
                    {
                        if (sourcePort == ((SmtpConfig)Configuration.AgentSettings).SmtpPort)
                        {
                            if (Tracing)
                            {
                                OnTrace((IPHeader)sender);
                            }
                            if (tcp.Data.Length > 0)
                            {
                                AppLayerSmtp ftp = new AppLayerSmtp(tcp.Data, tcp.Data.Length);
                                if (ftp.SmtpReplyCode == AppLayerSmtp.SMTP_REPLY_CODE_NEED_TO_AUTHENTICATE || ftp.SmtpReplyCode == AppLayerSmtp.SMTP_REPLY_CODE_LOGIN_DENIED)
                                {
                                    UnsuccessfulLogin(ipHeader.DestinationAddress.ToString());
                                }
                            }

                            // Console.WriteLine("Flags: {0}\tAck: {1}\tSeq:{2}", tcp.Flags, tcp.AcknowledgementNumber, tcp.SequenceNumber);
                            // Console.WriteLine("Source: {0}:{1}\tDestination: {2}:{3}", ipHeader.SourceAddress, tcp.SourcePort, ipHeader.DestinationAddress, tcp.DestinationPort);
                        }
                    }
                } catch (Exception ex) {
                    Sniffer.LogTrace(ex);
                }
            }
        }
Exemple #2
0
        void s_IpPacketSent(object sender, EventArgs e)
        {
            IPHeader ipHeader = (IPHeader)sender;

            if (ipHeader.ProtocolType == Protocol.Tcp)
            {
                try {
                    TCPHeader tcp = new TCPHeader(ipHeader.Data, ipHeader.MessageLength);
                    int       sourcePort;
                    int       destinationPort;
                    if (int.TryParse(tcp.SourcePort, out sourcePort) && int.TryParse(tcp.DestinationPort, out destinationPort))
                    {
                        if (sourcePort == ((Pop3Config)Configuration.AgentSettings).Pop3Port)
                        {
                            if (tcp.Data.Length > 0)
                            {
                                AppLayerPop3 ftp = new AppLayerPop3(tcp.Data, tcp.Data.Length);
                                if (ftp.Pop3Code.ToUpper().Equals(AppLayerPop3.POP3_REPLY_CODE_ERROR.ToUpper()))
                                {
                                    System.Threading.Thread.Sleep(100);
                                    if (CurrentClients.ContainsKey(destinationPort) && CurrentClients[destinationPort].LastMessage == Pop3Message.PASS)
                                    {
                                        if (Tracing)
                                        {
                                            OnTrace((IPHeader)sender);
                                        }
                                        UnsuccessfulLogin(ipHeader.DestinationAddress.ToString());
                                    }
                                }
                            }
                            // Console.WriteLine("Flags: {0}\tAck: {1}\tSeq:{2}", tcp.Flags, tcp.AcknowledgementNumber, tcp.SequenceNumber);
                            // Console.WriteLine("Source: {0}:{1}\tDestination: {2}:{3}", ipHeader.SourceAddress, tcp.SourcePort, ipHeader.DestinationAddress, tcp.DestinationPort);
                        }
                    }
                } catch (Exception ex) {
                    Sniffer.LogTrace(ex);
                }
            }
        }
Exemple #3
0
        void s_IpPacketReceived(object sender, EventArgs e)
        {
            IPHeader ipHeader = (IPHeader)sender;

            if (ipHeader.ProtocolType == Protocol.Tcp)
            {
                try {
                    TCPHeader tcp = new TCPHeader(ipHeader.Data, ipHeader.MessageLength);
                    int       sourcePort;
                    int       destinationPort;
                    if (int.TryParse(tcp.SourcePort, out sourcePort) && int.TryParse(tcp.DestinationPort, out destinationPort))
                    {
                        if (destinationPort == ((Pop3Config)Configuration.AgentSettings).Pop3Port)
                        {
                            if (tcp.Data.Length > 0)
                            {
                                AppLayerPop3 pop3 = new AppLayerPop3(tcp.Data, tcp.Data.Length);
                                if (!CurrentClients.ContainsKey(sourcePort))
                                {
                                    CurrentClients.Add(sourcePort, new Pop3Client());
                                }
                                CurrentClients[sourcePort].LastInteraction = DateTime.Now;
                                switch (pop3.Pop3Code.ToUpper())
                                {
                                case AppLayerPop3.POP3_INTERACTION_CODE_LIST:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.LIST;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_DELE:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.DELE;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_NOOP:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.NOOP;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_PASS:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.PASS;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_QUIT:
                                    if (CurrentClients.ContainsKey(sourcePort))
                                    {
                                        CurrentClients.Remove(sourcePort);
                                    }
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_RETR:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.RETR;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_RSET:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.RSET;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_STAT:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.STAT;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_TOP:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.TOP;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_UIDL:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.UIDL;
                                    break;

                                case AppLayerPop3.POP3_INTERACTION_CODE_USER:
                                    CurrentClients[sourcePort].LastMessage = Pop3Message.USER;
                                    break;
                                }
                            }
                            // Console.WriteLine("Flags: {0}\tAck: {1}\tSeq:{2}", tcp.Flags, tcp.AcknowledgementNumber, tcp.SequenceNumber);
                            // Console.WriteLine("Source: {0}:{1}\tDestination: {2}:{3}", ipHeader.SourceAddress, tcp.SourcePort, ipHeader.DestinationAddress, tcp.DestinationPort);
                        }
                    }
                } catch (Exception ex) {
                    Sniffer.LogTrace(ex);
                }
            }
        }