Penetration Testing - Deep Technical Breakdown

What Is Penetration Testing?

Think of pentesting as hiring ethical hackers to break your system legally.

Purpose of Penetration Testing

Pentesting answers: "If a real attacker tried today, how far could they go?"

• Find exploitable weaknesses
• Map real attack paths
• Demonstrate impact
• Validate actual risk

Unlike audits, pentesting actively attempts exploitation.

Types of Penetration Testing

Types of Pentests by Scope

Web Application Pentest

• SQL injection
• XSS
• IDOR
• JWT flaws
• Authentication bypass

Relevant for CRM, HRMS, WhatsApp SaaS, and APIs.

Cloud Pentest

• IAM misconfigurations
• Public storage exposure
• Over-permissioned roles
• Lateral movement
• Metadata access abuse

Network Pentest

• Open ports
• Firewall weaknesses
• Internal pivoting
• Privilege escalation paths

Mobile App Pentest

• Reverse engineering
• Hardcoded keys
• Insecure local storage
• Certificate pinning bypass

Red Team Exercise

• Phishing
• Endpoint compromise
• Lateral movement
• Data exfiltration

This is full-scope, advanced attacker simulation.

Pentesting Methodology (Step-by-Step)

1) Reconnaissance

Gather attack-surface intelligence: domains, subdomains, ports, technologies.

Typical tools: nmap, DNS enumeration, OSINT.

2) Scanning

Identify weaknesses such as outdated libraries, open services, and weak configurations.

3) Exploitation

Attempt controlled exploitation: SQLi, RCE, JWT tampering, privilege escalation.

4) Post-Exploitation

Assess blast radius and attacker progression:

• Can they access databases?
• Can they escalate privileges?
• Can they move laterally?

5) Reporting

Deliver practical, actionable outputs:

• Vulnerability list
• Severity ratings
• Proof-of-concept evidence
• Remediation guidance

Typical Pentest Outcome Format