546 lines
25 KiB
C#
546 lines
25 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Management;
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using System.Net;
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using System.Net.NetworkInformation;
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using System.Runtime.InteropServices;
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using winPEAS.Helpers;
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using winPEAS.Info.NetworkInfo.Enums;
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using winPEAS.Info.NetworkInfo.Structs;
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using winPEAS.Native;
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namespace winPEAS.Info.NetworkInfo
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{
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class NetworkInfoHelper
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{
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// https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-socket
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private const int AF_INET = 2;
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private const int AF_INET6 = 23;
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[StructLayout(LayoutKind.Sequential)]
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internal struct MIB_IPNETROW
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{
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[MarshalAs(UnmanagedType.U4)]
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public int dwIndex;
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[MarshalAs(UnmanagedType.U4)]
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public int dwPhysAddrLen;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac0;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac1;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac2;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac3;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac4;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac5;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac6;
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[MarshalAs(UnmanagedType.U1)]
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public byte mac7;
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[MarshalAs(UnmanagedType.U4)]
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public int dwAddr;
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[MarshalAs(UnmanagedType.U4)]
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public int dwType;
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}
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public enum ArpEntryType
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{
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Other = 1,
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Invalid = 2,
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Dynamic = 3,
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Static = 4,
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}
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public const int ERROR_INSUFFICIENT_BUFFER = 122;
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public static List<Dictionary<string, string>> GetNetCardInfo()
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{
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List<Dictionary<string, string>> results = new List<Dictionary<string, string>>();
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Dictionary<int, Dictionary<string, string>> adapters = new Dictionary<int, Dictionary<string, string>>();
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try
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{
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foreach (NetworkInterface netElement in NetworkInterface.GetAllNetworkInterfaces())
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{
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Dictionary<string, string> card = new Dictionary<string, string>() {
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{ "Index", netElement.GetIPProperties().GetIPv4Properties().Index.ToString() },
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{ "Name", netElement.Name },
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{ "PysicalAddr", "" },
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{ "DNSs", String.Join(", ", netElement.GetIPProperties().DnsAddresses) },
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{ "Gateways", "" },
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{ "IPs", "" },
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{ "Netmasks", "" },
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{ "arp", "" }
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};
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card["PysicalAddrIni"] = netElement.GetPhysicalAddress().ToString();
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for (int i = 0; i < card["PysicalAddrIni"].Length; i += 2)
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card["PysicalAddr"] += card["PysicalAddrIni"].Substring(i, 2) + ":";
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foreach (GatewayIPAddressInformation address in netElement.GetIPProperties().GatewayAddresses.Reverse()) //Reverse so first IPv4
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card["Gateways"] += address.Address + ", ";
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foreach (UnicastIPAddressInformation ip in netElement.GetIPProperties().UnicastAddresses.Reverse())
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{ //Reverse so first IPv4
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card["IPs"] += ip.Address.ToString() + ", ";
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card["Netmasks"] += ip.IPv4Mask.ToString() + ", ";
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}
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//Delete last separator
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if (card["PysicalAddr"].Length > 0)
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card["PysicalAddr"] = card["PysicalAddr"].Remove(card["PysicalAddr"].Length - 1);
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if (card["Gateways"].Length > 0)
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card["Gateways"] = card["Gateways"].Remove(card["Gateways"].Length - 2);
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if (card["IPs"].Length > 0)
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card["IPs"] = card["IPs"].Remove(card["IPs"].Length - 2);
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if (card["Netmasks"].Length > 0)
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card["Netmasks"] = card["Netmasks"].Remove(card["Netmasks"].Length - 2);
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adapters[netElement.GetIPProperties().GetIPv4Properties().Index] = card;
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}
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//return results;
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// GET ARP values
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int bytesNeeded = 0;
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int result = Iphlpapi.GetIpNetTable(IntPtr.Zero, ref bytesNeeded, false);
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// call the function, expecting an insufficient buffer.
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if (result != ERROR_INSUFFICIENT_BUFFER)
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{
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Console.WriteLine(" [X] Exception: {0}", result);
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}
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IntPtr buffer = IntPtr.Zero;
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// allocate sufficient memory for the result structure
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buffer = Marshal.AllocCoTaskMem(bytesNeeded);
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result = Iphlpapi.GetIpNetTable(buffer, ref bytesNeeded, false);
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if (result != 0)
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{
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Console.WriteLine(" [X] Exception allocating buffer: {0}", result);
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}
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// now we have the buffer, we have to marshal it. We can read the first 4 bytes to get the length of the buffer
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int entries = Marshal.ReadInt32(buffer);
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// increment the memory pointer by the size of the int
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IntPtr currentBuffer = new IntPtr(buffer.ToInt64() + Marshal.SizeOf(typeof(int)));
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// allocate a list of entries
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List<MIB_IPNETROW> arpEntries = new List<MIB_IPNETROW>();
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// cycle through the entries
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for (int index = 0; index < entries; index++)
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{
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arpEntries.Add((MIB_IPNETROW)Marshal.PtrToStructure(new IntPtr(currentBuffer.ToInt64() + (index * Marshal.SizeOf(typeof(MIB_IPNETROW)))), typeof(MIB_IPNETROW)));
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}
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// sort the list by interface index
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List<MIB_IPNETROW> sortedARPEntries = arpEntries.OrderBy(o => o.dwIndex).ToList();
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int currentIndexAdaper = -1;
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foreach (MIB_IPNETROW arpEntry in sortedARPEntries)
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{
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int indexAdapter = arpEntry.dwIndex;
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if (!adapters.ContainsKey(indexAdapter))
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{
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Console.WriteLine("Error: No interface found with Index " + arpEntry.dwIndex.ToString());
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continue;
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}
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currentIndexAdaper = indexAdapter;
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IPAddress ipAddr = new IPAddress(BitConverter.GetBytes(arpEntry.dwAddr));
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byte[] macBytes = new byte[] { arpEntry.mac0, arpEntry.mac1, arpEntry.mac2, arpEntry.mac3, arpEntry.mac4, arpEntry.mac5 };
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string physAddr = BitConverter.ToString(macBytes);
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ArpEntryType entryType = (ArpEntryType)arpEntry.dwType;
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adapters[arpEntry.dwIndex]["arp"] += $" {ipAddr,-22}{physAddr,-22}{entryType}\n";
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}
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Iphlpapi.FreeMibTable(buffer);
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}
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catch (Exception ex)
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{
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Beaprint.PrintException(ex.Message);
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}
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results = adapters.Values.ToList();
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return results;
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}
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public static List<List<string>> GetNetConnections()
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{
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List<List<string>> results = new List<List<string>>();
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try
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{
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var props = IPGlobalProperties.GetIPGlobalProperties();
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results.Add(new List<string>() { "Proto", "Local Address", "Foreign Address", "State" });
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//foreach (var conn in props.GetActiveTcpConnections())
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// results.Add(new List<string>() { "TCP", conn.LocalEndPoint.ToString(), conn.RemoteEndPoint.ToString(), conn.State.ToString() });
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foreach (var listener in props.GetActiveTcpListeners())
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{
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bool repeated = false;
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foreach (List<string> inside_entry in results)
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{
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if (inside_entry.SequenceEqual(new List<string>() { "TCP", listener.ToString(), "", "Listening" }))
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repeated = true;
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}
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if (!repeated)
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results.Add(new List<string>() { "TCP", listener.ToString(), "", "Listening" });
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}
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foreach (var listener in props.GetActiveUdpListeners())
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{
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bool repeated = false;
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foreach (List<string> inside_entry in results)
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{
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if (inside_entry.SequenceEqual(new List<string>() { "UDP", listener.ToString(), "", "Listening" }))
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repeated = true;
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}
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if (!repeated)
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results.Add(new List<string>() { "UDP", listener.ToString(), "", "Listening" });
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}
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}
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catch (Exception ex)
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{
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Beaprint.PrintException(ex.Message);
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}
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return results;
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}
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// https://stackoverflow.com/questions/3567063/get-a-list-of-all-unc-shared-folders-on-a-local-network-server
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// v2: https://stackoverflow.com/questions/6227892/reading-share-permissions-in-c-sharp
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public static List<Dictionary<string, string>> GetNetworkShares(string pcname)
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{
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List<Dictionary<string, string>> results = new List<Dictionary<string, string>>();
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try
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{
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ManagementClass manClass = new ManagementClass(@"\\" + pcname + @"\root\cimv2:Win32_Share"); //get shares
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foreach (ManagementObject objShare in manClass.GetInstances())
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{
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string permStr = "";
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try
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{
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//get the access values you have
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ManagementBaseObject result = objShare.InvokeMethod("GetAccessMask", null, null);
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//value meanings: http://msdn.microsoft.com/en-us/library/aa390438(v=vs.85).aspx
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var currentPerm = Convert.ToInt32(result.Properties["ReturnValue"].Value);
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permStr = PermissionsHelper.PermInt2Str(currentPerm);
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}
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catch (ManagementException)
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{
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permStr = ""; //no permissions are set on the share
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}
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Dictionary<string, string> share = new Dictionary<string, string> { };
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share["Name"] = $"{objShare.Properties["Name"].Value}";
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share["Path"] = $"{objShare.Properties["Path"].Value}";
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share["Permissions"] = permStr;
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results.Add(share);
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}
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}
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catch (Exception ex)
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{
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Beaprint.PrintException(ex.Message);
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}
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return results;
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}
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//From Seatbelt
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public static List<Dictionary<string, string>> GetDNSCache()
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{
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List<Dictionary<string, string>> results = new List<Dictionary<string, string>>();
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try
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{
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using (ManagementObjectSearcher wmiData = new ManagementObjectSearcher(@"root\standardcimv2", "SELECT * FROM MSFT_DNSClientCache"))
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{
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using (ManagementObjectCollection data = wmiData.Get())
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{
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foreach (ManagementObject result in data)
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{
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Dictionary<string, string> dnsEntry = new Dictionary<string, string>();
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string entry = $"{result["Entry"]}";
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string name = $"{result["Name"]}";
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string dataDns = $"{result["Data"]}";
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dnsEntry["Entry"] = (entry.Length > 33) ? "..." + result["Entry"].ToString().Substring(entry.Length - 32) : entry;
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dnsEntry["Name"] = (name.Length > 33) ? "..." + name.Substring(name.Length - 32) : name;
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dnsEntry["Data"] = (dataDns.Length > 33) ? "..." + dataDns.Substring(dataDns.Length - 32) : dataDns;
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results.Add(dnsEntry);
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}
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}
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}
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}
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catch (ManagementException ex) when (ex.ErrorCode == ManagementStatus.InvalidNamespace)
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{
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Console.WriteLine(" [X] 'MSFT_DNSClientCache' WMI class unavailable (minimum supported versions of Windows: 8/2012)", ex.Message);
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}
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catch (Exception ex)
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{
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Beaprint.PrintException(ex.Message);
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}
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return results;
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}
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public static List<TcpConnectionInfo> GetTcpConnections(IPVersion ipVersion, Dictionary<int, Process> processesByPid = null)
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{
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int bufferSize = 0;
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List<TcpConnectionInfo> tcpTableRecords = new List<TcpConnectionInfo>();
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int ulAf = AF_INET;
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if (ipVersion == IPVersion.IPv6)
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{
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ulAf = AF_INET6;
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}
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// Getting the initial size of TCP table.
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uint result = Iphlpapi.GetExtendedTcpTable(IntPtr.Zero, ref bufferSize, true, ulAf, TcpTableClass.TCP_TABLE_OWNER_PID_ALL);
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// Allocating memory as an IntPtr with the bufferSize.
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IntPtr tcpTableRecordsPtr = Marshal.AllocHGlobal(bufferSize);
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try
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{
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// The IntPtr from last call, tcpTableRecoresPtr must be used in the subsequent
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// call and passed as the first parameter.
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result = Iphlpapi.GetExtendedTcpTable(tcpTableRecordsPtr, ref bufferSize, true, ulAf, TcpTableClass.TCP_TABLE_OWNER_PID_ALL);
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// If not zero, the call failed.
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if (result != 0)
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{
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return new List<TcpConnectionInfo>();
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}
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// Marshals data fron an unmanaged block of memory to the
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// newly allocated managed object 'tcpRecordsTable' of type
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// 'MIB_TCPTABLE_OWNER_PID' to get number of entries of TCP
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// table structure.
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// Determine if IPv4 or IPv6.
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if (ipVersion == IPVersion.IPv4)
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{
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MIB_TCPTABLE_OWNER_PID tcpRecordsTable = (MIB_TCPTABLE_OWNER_PID)Marshal.PtrToStructure(tcpTableRecordsPtr, typeof(MIB_TCPTABLE_OWNER_PID));
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IntPtr tableRowPtr = (IntPtr)((long)tcpTableRecordsPtr + Marshal.SizeOf(tcpRecordsTable.dwNumEntries));
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// Read and parse the TCP records from the table and store them in list
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// 'TcpConnection' structure type objects.
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for (int row = 0; row < tcpRecordsTable.dwNumEntries; row++)
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{
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MIB_TCPROW_OWNER_PID tcpRow = (MIB_TCPROW_OWNER_PID)Marshal.PtrToStructure(tableRowPtr, typeof(MIB_TCPROW_OWNER_PID));
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// Add row to list of TcpConnetions.
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string proc_name = GetProcessNameByPid(tcpRow.owningPid, processesByPid);
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if (proc_name == "Idle")
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{ //Sometime too many Idle connections that doesn't provide sensitive info
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continue;
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}
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tcpTableRecords.Add(new TcpConnectionInfo(
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Protocol.TCP,
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new IPAddress(tcpRow.localAddr),
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new IPAddress(tcpRow.remoteAddr),
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BitConverter.ToUInt16(new byte[2] {
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tcpRow.localPort[1],
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tcpRow.localPort[0] }, 0),
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BitConverter.ToUInt16(new byte[2] {
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tcpRow.remotePort[1],
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tcpRow.remotePort[0] }, 0),
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tcpRow.owningPid,
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tcpRow.state,
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proc_name));
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tableRowPtr = (IntPtr)((long)tableRowPtr + Marshal.SizeOf(tcpRow));
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}
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}
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else if (ipVersion == IPVersion.IPv6)
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{
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MIB_TCP6TABLE_OWNER_PID tcpRecordsTable = (MIB_TCP6TABLE_OWNER_PID)Marshal.PtrToStructure(tcpTableRecordsPtr, typeof(MIB_TCP6TABLE_OWNER_PID));
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IntPtr tableRowPtr = (IntPtr)((long)tcpTableRecordsPtr + Marshal.SizeOf(tcpRecordsTable.dwNumEntries));
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// Read and parse the TCP records from the table and store them in list
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// 'TcpConnection' structure type objects.
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for (int row = 0; row < tcpRecordsTable.dwNumEntries; row++)
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{
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MIB_TCP6ROW_OWNER_PID tcpRow = (MIB_TCP6ROW_OWNER_PID)Marshal.PtrToStructure(tableRowPtr, typeof(MIB_TCP6ROW_OWNER_PID));
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string proc_name = GetProcessNameByPid(tcpRow.owningPid, processesByPid);
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if (proc_name == "Idle")
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{ //Sometime too many Idle connections that doesn't provide sensitive info
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continue;
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}
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tcpTableRecords.Add(new TcpConnectionInfo(
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Protocol.TCP,
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new IPAddress(tcpRow.localAddr, tcpRow.localScopeId),
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new IPAddress(tcpRow.remoteAddr, tcpRow.remoteScopeId),
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BitConverter.ToUInt16(new byte[2] {
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tcpRow.localPort[1],
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tcpRow.localPort[0] }, 0),
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BitConverter.ToUInt16(new byte[2] {
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tcpRow.remotePort[1],
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tcpRow.remotePort[0] }, 0),
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tcpRow.owningPid,
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tcpRow.state,
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proc_name));
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tableRowPtr = (IntPtr)((long)tableRowPtr + Marshal.SizeOf(tcpRow));
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}
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}
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}
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catch (OutOfMemoryException outOfMemoryException)
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{
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throw outOfMemoryException;
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}
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catch (Exception exception)
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{
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throw exception;
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}
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finally
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{
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Marshal.FreeHGlobal(tcpTableRecordsPtr);
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}
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return tcpTableRecords != null ? tcpTableRecords.Distinct().ToList() : new List<TcpConnectionInfo>();
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}
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public static IEnumerable<UdpConnectionInfo> GetUdpConnections(IPVersion ipVersion, Dictionary<int, Process> processesByPid = null)
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{
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int bufferSize = 0;
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List<UdpConnectionInfo> udpTableRecords = new List<UdpConnectionInfo>();
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int ulAf = AF_INET;
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if (ipVersion == IPVersion.IPv6)
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{
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ulAf = AF_INET6;
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}
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// Getting the initial size of UDP table.
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uint result = Iphlpapi.GetExtendedUdpTable(IntPtr.Zero, ref bufferSize, true, ulAf, UdpTableClass.UDP_TABLE_OWNER_PID);
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// Allocating memory as an IntPtr with the bufferSize.
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IntPtr udpTableRecordsPtr = Marshal.AllocHGlobal(bufferSize);
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try
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{
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// The IntPtr from last call, udpTableRecoresPtr must be used in the subsequent
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// call and passed as the first parameter.
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result = Iphlpapi.GetExtendedUdpTable(udpTableRecordsPtr, ref bufferSize, true, ulAf, UdpTableClass.UDP_TABLE_OWNER_PID);
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// If not zero, call failed.
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if (result != 0)
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{
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return new List<UdpConnectionInfo>();
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}
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// Marshals data fron an unmanaged block of memory to the
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// newly allocated managed object 'udpRecordsTable' of type
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// 'MIB_UDPTABLE_OWNER_PID' to get number of entries of TCP
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// table structure.
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// Determine if IPv4 or IPv6.
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if (ipVersion == IPVersion.IPv4)
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{
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MIB_UDPTABLE_OWNER_PID udpRecordsTable = (MIB_UDPTABLE_OWNER_PID)Marshal.PtrToStructure(udpTableRecordsPtr, typeof(MIB_UDPTABLE_OWNER_PID));
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IntPtr tableRowPtr = (IntPtr)((long)udpTableRecordsPtr + Marshal.SizeOf(udpRecordsTable.dwNumEntries));
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// Read and parse the UDP records from the table and store them in list
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// 'UdpConnection' structure type objects.
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for (int i = 0; i < udpRecordsTable.dwNumEntries; i++)
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{
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MIB_UDPROW_OWNER_PID udpRow = (MIB_UDPROW_OWNER_PID)Marshal.PtrToStructure(tableRowPtr, typeof(MIB_UDPROW_OWNER_PID));
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udpTableRecords.Add(new UdpConnectionInfo(
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Protocol.UDP,
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new IPAddress(udpRow.localAddr),
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BitConverter.ToUInt16(new byte[2] { udpRow.localPort[1],
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udpRow.localPort[0] }, 0),
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udpRow.owningPid,
|
|
GetProcessNameByPid(udpRow.owningPid, processesByPid)));
|
|
|
|
tableRowPtr = (IntPtr)((long)tableRowPtr + Marshal.SizeOf(udpRow));
|
|
}
|
|
}
|
|
else if (ipVersion == IPVersion.IPv6)
|
|
{
|
|
MIB_UDP6TABLE_OWNER_PID udpRecordsTable = (MIB_UDP6TABLE_OWNER_PID)
|
|
Marshal.PtrToStructure(udpTableRecordsPtr, typeof(MIB_UDP6TABLE_OWNER_PID));
|
|
IntPtr tableRowPtr = (IntPtr)((long)udpTableRecordsPtr +
|
|
Marshal.SizeOf(udpRecordsTable.dwNumEntries));
|
|
|
|
// Read and parse the UDP records from the table and store them in list
|
|
// 'UdpConnection' structure type objects.
|
|
for (int i = 0; i < udpRecordsTable.dwNumEntries; i++)
|
|
{
|
|
MIB_UDP6ROW_OWNER_PID udpRow = (MIB_UDP6ROW_OWNER_PID)
|
|
Marshal.PtrToStructure(tableRowPtr, typeof(MIB_UDP6ROW_OWNER_PID));
|
|
udpTableRecords.Add(new UdpConnectionInfo(
|
|
Protocol.UDP,
|
|
new IPAddress(udpRow.localAddr, udpRow.localScopeId),
|
|
BitConverter.ToUInt16(new byte[2] {
|
|
udpRow.localPort[1],
|
|
udpRow.localPort[0] }, 0),
|
|
udpRow.owningPid,
|
|
GetProcessNameByPid(udpRow.owningPid, processesByPid)));
|
|
tableRowPtr = (IntPtr)((long)tableRowPtr + Marshal.SizeOf(udpRow));
|
|
}
|
|
}
|
|
}
|
|
catch (OutOfMemoryException outOfMemoryException)
|
|
{
|
|
throw outOfMemoryException;
|
|
}
|
|
catch (Exception exception)
|
|
{
|
|
throw exception;
|
|
}
|
|
finally
|
|
{
|
|
Marshal.FreeHGlobal(udpTableRecordsPtr);
|
|
}
|
|
|
|
return udpTableRecords != null ? udpTableRecords.Distinct().ToList() : new List<UdpConnectionInfo>();
|
|
}
|
|
|
|
private static string GetProcessNameByPid(int pid, Dictionary<int, Process> processesByPid = null)
|
|
{
|
|
if (processesByPid != null && processesByPid.ContainsKey(pid))
|
|
{
|
|
var process = processesByPid[pid];
|
|
var processName = process.ProcessName;
|
|
|
|
try
|
|
{
|
|
processName = process.MainModule?.FileName;
|
|
}
|
|
catch (System.Exception ex)
|
|
{
|
|
}
|
|
|
|
return processName;
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
}
|
|
}
|