How to Start Password Sniffing Attacks Projects using NS3

To Simulate a Password Sniffing Attack in NS-3 has includes the creating a scenario in which a malicious node intercepts the traffic we extract sensitive information like as plaintext passwords. This kind of attack targets in unencrypted communication protocols such as HTTP, FTP, or Telnet.

Here’s a guide to simulate a password sniffing attack using NS-3:

Steps to Start Password Sniffing Attacks Projects using NS3

  1. Set Up NS-3
  • Install and build NS-3:

./waf configure

./waf build

  • Verify the installation:

./waf –run hello-simulator

  1. Understand Password Sniffing Attacks
  • Mechanism:
    • we network traffic the attacker listens in promiscuous mode to intercept sensitive data.
  • Target Protocols:
    • The target protocols are unencrypted protocols such as HTTP, FTP, or Telnet.
    • The protocols are broadcast or weakly secured communications.
  1. Define the Network Topology
  • Generate a network with:
    • Legitimate Nodes: The legitimate nodes are client and server communicating generally.
    • Attacker Node: Overhears on transmission we intercept sensitive data.
  • Sample Topology:

NodeContainer clientNode, serverNode, attackerNode;

clientNode.Create(1);    // Client node

serverNode.Create(1);    // Server node

attackerNode.Create(1);  // Attacker node

PointToPointHelper p2p;

p2p.SetDeviceAttribute(“DataRate”, StringValue(“10Mbps”));

p2p.SetChannelAttribute(“Delay”, StringValue(“2ms”));

// Connect nodes

NetDeviceContainer devices1 = p2p.Install(NodeContainer(clientNode.Get(0), serverNode.Get(0)));

NetDeviceContainer devices2 = p2p.Install(NodeContainer(attackerNode.Get(0), clientNode.Get(0)));

  1. Assign IP Addresses
  • Install the Internet stack and assign IP addresses.

InternetStackHelper stack;

stack.Install(clientNode);

stack.Install(serverNode);

stack.Install(attackerNode);

Ipv4AddressHelper address;

address.SetBase(“10.1.1.0”, “255.255.255.0”);

address.Assign(devices1);

address.SetBase(“10.1.2.0”, “255.255.255.0”);

address.Assign(devices2);

 

  1. Simulate Legitimate Communication
  • Improve the traffic among the client and the server.
  • Example: Replicate the FTP or HTTP Communication

uint16_t port = 21; // FTP port

Address serverAddress = InetSocketAddress(Ipv4Address(“10.1.1.1”), port);

PacketSinkHelper packetSinkHelper(“ns3::TcpSocketFactory”, serverAddress);

ApplicationContainer serverApp = packetSinkHelper.Install(serverNode.Get(0));

serverApp.Start(Seconds(1.0));

serverApp.Stop(Seconds(10.0));

OnOffHelper clientTraffic(“ns3::TcpSocketFactory”, serverAddress);

clientTraffic.SetAttribute(“DataRate”, StringValue(“10Mbps”));

clientTraffic.SetAttribute(“PacketSize”, UintegerValue(512));

ApplicationContainer clientApps = clientTraffic.Install(clientNode.Get(0));

clientApps.Start(Seconds(2.0));

clientApps.Stop(Seconds(10.0));

  1. Simulate the Password Sniffing Attack
  • To setting the attacker node we seizure and analyse the network traffic.

6.1 Traffic Sniffing

  • Ensure the promiscuous mode and seizure packets.

void PacketSniffer(Ptr<const Packet> packet) {

NS_LOG_UNCOND(“Captured Packet: ” << *packet);

// Optionally analyze the packet for sensitive data

}

 

Ptr<NetDevice> attackerDevice = attackerNode.Get(0)->GetDevice(0);

attackerDevice->SetAttribute(“PromiscuousMode”, BooleanValue(true));

attackerDevice->TraceConnectWithoutContext(“PhyRxEnd”, MakeCallback(&PacketSniffer));

6.2 Password Extraction

  • Analyse their seized packets for plaintext passwords.

void AnalyzePackets(Ptr<const Packet> packet) {

uint8_t buffer[1024];

packet->CopyData(buffer, packet->GetSize());

std::string payload(reinterpret_cast<char*>(buffer), packet->GetSize());

if (payload.find(“USER”) != std::string::npos || payload.find(“PASS”) != std::string::npos) {

NS_LOG_UNCOND(“Potential Credential Found: ” << payload);

}

}

attackerDevice->TraceConnectWithoutContext(“PhyRxEnd”, MakeCallback(&AnalyzePackets));

  1. Enable Packet Capturing
  • Utilizing a PCAP tracing we seizure packets for offline analysis by Wireshark.

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PointToPointHelper p2p;

p2p.EnablePcapAll(“password-sniffing”);

  1. Run the Simulation
  • We Build and execute the simulation:

./waf –run password-sniffing

  • Analyse the build .pcap files.
  1. Analyse Captured Packets
  • Open the .pcap file in Wireshark:

wireshark password-sniffing-0-0.pcap

  • Used this filter we examine specific traffic:
    • FTP Login: tcp.port == 21
    • HTTP Traffic: http
  1. Implement Detection and Mitigation
  • Detection:
    • Track the promiscuous mode traffic or unusual packet seizure behaviour.
    • Sample: Count retransmissions or abnormal packet patterns.
  • Mitigation:
    • Used the encode protocols such as HTTPS, SFTP, or FTPS.
    • Estimate the authentication mechanisms for devices.
  1. Evaluate Metrics
  • Measure the attack’s success by analysing:
    • Captured Packets: Number of packets intercepted through the attacker.
    • Data Leakage: Sensitive information exposed.
  • Utilizing FlowMonitor for traffic analysis:

FlowMonitorHelper flowmon;

Ptr<FlowMonitor> monitor = flowmon.InstallAll();

  1. Extend the Simulation
  • Validate the attack against multiple protocols such as HTTP, FTP, Telnet.
  • Replicate the barricades such as encode or intrusion detection systems (IDS).

This setup provides a framework for simulating password sniffing attacks in NS-3. Let me know if you need additional guidance!

We cover the overall information that will understand the concepts and techniques that will help you to give some unique ideas to simulate the password sniffing attack project using the tool of NS3. More information will be shared in the upcoming manual.

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