# Ensure Python 3.6+ is installed
python3 --version

# Install required dependencies
pip3 install paramiko pyyaml colorama

# Clone the repository
git clone https://github.com/floriankostov/network_scanner.git
cd network_scanner

# Make executable (Unix/Linux/macOS)
chmod +x scanner.py

# Run the scanner
python3 scanner.py

# Build Docker image
docker build -t network-scanner .

# Run in container
docker run -it --network host network-scanner

python3 scanner.py

╔══════════════════════════════════════════════════════════════════╗
║                    NETWORK SCANNER TOOLKIT                      ║
║                  Professional Penetration Testing               ║
╠══════════════════════════════════════════════════════════════════╣
║  1. 📡 Extended Port Scan    - Comprehensive port discovery     ║
║  2. ⚡ Basic Port Scan       - Quick essential port check       ║
║  3. 🔐 SSH Security Testing  - Advanced SSH vulnerability scan  ║
║  4. 🎯 Custom Target Scan    - Manual IP/range specification   ║
║  5. ❌ Exit                   - Quit the application            ║
╚══════════════════════════════════════════════════════════════════╝

# Automatic network detection
[+] Network: 192.168.1.0/24 (254 hosts)
[+] Gateway: 192.168.1.1
[+] Local IP: 192.168.1.100

# Custom network specification
python3 scanner.py --network 10.0.0.0/16

# Standard enumeration
[EXPLOIT] CVE-2018-15473 Username Enumeration
[+] Target: 192.168.1.50:22 (OpenSSH 7.4)
[+] Testing 100 common usernames...
[✓] Valid users found: admin, user, test

# Stealth enumeration with evasion
[STEALTH] Enabling anti-detection measures
[+] Random delays: 0.5-2.0 seconds
[+] Connection variation: randomized
[✓] Valid users found: admin (confirmed)

# Smart brute force
[EXPLOIT] Smart SSH Brute Force
[+] Target: 192.168.1.50:22
[+] Valid users: admin, user
[+] Wordlist: 500 common passwords
[✓] Credentials found: admin:password123

# Stealth brute force with fail2ban evasion
[STEALTH] Advanced evasion enabled
[+] Adaptive delays: 3-8 seconds
[+] Connection resets: every 5 attempts
[+] IP rotation: enabled
[!] Intrusion detection bypass: active

# Network scanning settings
network:
  ping_timeout: 1.0
  port_timeout: 3.0
  thread_count: 50
  max_hosts: 254

# SSH exploitation settings
ssh:
  timeout: 10.0
  retry_count: 3
  stealth_mode: true
  delay_min: 0.5
  delay_max: 2.0
  
# Exploitation parameters
exploits:
  user_enumeration:
    max_users: 100
    timing_threshold: 0.05
  brute_force:
    max_attempts: 50
    wordlist_size: 500
    fail2ban_detection: true

port_lists:
  basic: [22, 80, 443, 8080]
  extended: [21, 22, 23, 25, 53, 80, 110, 143, 443, 993, 995, 8080]
  comprehensive: [1-1000, 3389, 5432, 5900, 8080-8090]

# Disable root login
echo "PermitRootLogin no" >> /etc/ssh/sshd_config

# Require key-based authentication
echo "PasswordAuthentication no" >> /etc/ssh/sshd_config
echo "PubkeyAuthentication yes" >> /etc/ssh/sshd_config

# Change default port
echo "Port 2222" >> /etc/ssh/sshd_config

# Restart SSH service
systemctl restart sshd

# Username enumeration attempts
grep "Invalid user" /var/log/auth.log

# Brute force detection
grep "Failed password" /var/log/auth.log | head -10

# Connection frequency analysis
awk '{print $1, $2, $3, $11}' /var/log/auth.log | grep "sshd" | sort | uniq -c

[sshd]
enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 3
bantime = 3600
findtime = 600

# Simplified timing attack pseudocode
def enumerate_users(target, usernames):
    timings = {}
    for user in usernames:
        start = time.time()
        try_authentication(target, user, "invalid_password")
        end = time.time()
        timings[user] = end - start
    
    # Analyze timing patterns
    return analyze_timing_anomalies(timings)

╔══════════════════════════════════════════════════════════════════╗
║                       NETWORK SCAN RESULTS                      ║
╠══════════════════════════════════════════════════════════════════╣
║ Network: 192.168.1.0/24                                         ║
║ Active Hosts: 12/254                                             ║
║ Scan Duration: 45.3 seconds                                     ║
╚══════════════════════════════════════════════════════════════════╝

📡 DISCOVERED HOSTS:
┌─────────────────┬──────────────────┬─────────────────────────────┐
│ IP Address      │ Hostname         │ Response Time               │
├─────────────────┼──────────────────┼─────────────────────────────┤
│ 192.168.1.1     │ gateway.local    │ 1.2ms                      │
│ 192.168.1.50    │ server.local     │ 2.1ms                      │
│ 192.168.1.100   │ workstation.local│ 0.8ms                      │
└─────────────────┴──────────────────┴─────────────────────────────┘

╔══════════════════════════════════════════════════════════════════╗
║                    SSH VULNERABILITY REPORT                     ║
║                      Target: 192.168.1.50:22                   ║
╠══════════════════════════════════════════════════════════════════╣
║ SSH Version: OpenSSH 7.4                                        ║
║ Risk Level: HIGH                                                 ║
║ Vulnerabilities: 3 Critical, 2 High, 1 Medium                  ║
╚══════════════════════════════════════════════════════════════════╝

🔴 CRITICAL VULNERABILITIES:
┌─────────────────┬────────────────────────────────────────────────┐
│ CVE-2018-15473  │ Username Enumeration via Timing Attack        │
│ Status          │ ✅ EXPLOITABLE - 3 valid users discovered     │
│ Impact          │ Information Disclosure, Attack Preparation    │
│ Users Found     │ admin, user, test                             │
└─────────────────┴────────────────────────────────────────────────┘

┌─────────────────┬────────────────────────────────────────────────┐
│ Brute Force     │ Weak Authentication Configuration              │
│ Status          │ ✅ EXPLOITABLE - Password auth enabled        │
│ Impact          │ Unauthorized Access, Credential Compromise    │
│ Attempts        │ 45/50 tested, 1 credential found             │
└─────────────────┴────────────────────────────────────────────────┘

💥 EXPLOITATION RESULTS:
╔══════════════════════════════════════════════════════════════════╗
║ ✅ Successfully compromised SSH service                          ║
║ 🔑 Credential: admin:password123                                ║
║ 🎯 Access Level: Administrative                                 ║
║ ⚠️  Recommend immediate credential change and hardening         ║
╚══════════════════════════════════════════════════════════════════╝