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
- Set Up NS-3
- Install and build NS-3:
./waf configure
./waf build
- Verify the installation:
./waf –run hello-simulator
- 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.
- 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)));
- 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);
- 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));
- 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));
- 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”);
- Run the Simulation
- We Build and execute the simulation:
./waf –run password-sniffing
- Analyse the build .pcap files.
- 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
- 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.
- 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();
- 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!
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