Penetration testing methodology in Cybersecurity - Step-by-Step Execution

Concept Flow - Penetration testing methodology

Planning & Reconnaissance

↓

Scanning & Enumeration

↓

Gaining Access

↓

Maintaining Access

↓

Analysis & Reporting

↓

Cleanup

Penetration testing follows a step-by-step process from planning to cleanup to find and report security weaknesses.

Execution Sample

Cybersecurity

1. Plan test scope and goals
2. Gather info about target
3. Scan for open ports and services
4. Exploit vulnerabilities to enter
5. Keep access to explore deeper
6. Document findings and fix
7. Remove all test traces

This sequence shows the main steps a penetration tester follows to simulate an attack and report security issues.

Analysis Table

Step	Action	Purpose	Tools/Techniques	Outcome
1	Planning & Reconnaissance	Define scope and gather target info	Interviews, OSINT, network maps	Clear test goals and target data
2	Scanning & Enumeration	Find open ports and services	Nmap, Nessus, Netcat	List of active services and potential entry points
3	Gaining Access	Exploit vulnerabilities to enter	Metasploit, manual exploits	Access to target system gained
4	Maintaining Access	Keep control for further testing	Backdoors, rootkits	Persistent access established
5	Analysis & Reporting	Document findings and risks	Report templates, screenshots	Detailed report for fixing issues
6	Cleanup	Remove all test traces	Manual removal, scripts	No evidence of testing left
7	End	Testing complete	N/A	Test finished successfully

💡 All steps completed to simulate attack and report security weaknesses.

State Tracker

Phase	Before	After Step 1	After Step 2	After Step 3	After Step 4	After Step 5	After Step 6	Final
Access Level	None	None	None	User Access	Persistent Access	Persistent Access	None	None
Information Collected	None	Target info	Services list	Services list + vulnerabilities	Services list + vulnerabilities	Report data	Report data	Report data
Test Footprint	None	Minimal	Low	Medium	Medium	Medium	Cleaned	Clean

Key Insights - 3 Insights

Why do testers spend time on reconnaissance before attacking?

Reconnaissance gathers important target info to plan effective attacks, as shown in execution_table step 1 where clear goals and data are collected.

What happens if cleanup is skipped after testing?

Skipping cleanup leaves traces that can alert defenders or cause issues, but execution_table step 6 shows cleanup removes all test evidence.

Why maintain access after gaining entry?

Maintaining access allows deeper testing and checking persistence, as seen in step 4 where persistent access is established for further exploration.

Visual Quiz - 3 Questions

Look at the execution_table, at which step is access first gained to the target system?

A Step 2 - Scanning & Enumeration

B Step 3 - Gaining Access

C Step 4 - Maintaining Access

D Step 1 - Planning & Reconnaissance

💡 Hint

Check the 'Outcome' column for when 'Access to target system gained' appears.

According to variable_tracker, what is the 'Access Level' after Step 5?

A Persistent Access

B User Access

C None

D Admin Access

💡 Hint

Look at the 'Access Level' row under 'After Step 5' column.

If the 'Cleanup' step is skipped, what would likely happen to the 'Test Footprint' variable?

A It would remain 'Clean'

B It would become 'Minimal'

C It would stay 'Medium' or higher

D It would reset to 'None'

💡 Hint

Refer to 'Test Footprint' changes in variable_tracker after Step 6.

Concept Snapshot

Penetration testing follows these steps:
1. Plan and gather info
2. Scan for open services
3. Exploit to gain access
4. Maintain access for deeper testing
5. Analyze and report findings
6. Clean up all test traces
Each step builds on the last to safely simulate attacks and improve security.

Full Transcript

Penetration testing methodology is a step-by-step process used to find security weaknesses by simulating attacks. It starts with planning and gathering information about the target. Then testers scan for open ports and services to find possible entry points. Next, they exploit vulnerabilities to gain access to the system. After gaining access, they maintain it to explore further and test persistence. Once testing is done, they analyze and report all findings clearly. Finally, they clean up to remove any traces of testing. This process helps organizations understand and fix their security gaps.

Practice

1. What is the first step in the penetration testing methodology?

easy

A. Cleaning up after testing

B. Planning and information gathering

C. Reporting findings

D. Exploiting vulnerabilities

Solution

1. Step 1: Understand the methodology sequence

   The penetration testing methodology starts with planning and gathering information about the target system.

2. Step 2: Identify the first step in the process

   Before any testing or exploitation, testers must plan and collect data to know what to test.

3. Final Answer:

   Planning and information gathering -> Option B

4. Quick Check:

   First step = Planning and information gathering [OK]

Hint: Remember: Plan first, then test, then report [OK]

Common Mistakes:

• Starting with exploitation before planning
• Reporting before testing
• Skipping cleanup step

2. Which of the following is the correct order of steps in penetration testing?

easy

A. Exploitation, Planning, Reporting, Cleanup

B. Reporting, Exploitation, Scanning, Planning

C. Planning, Scanning, Exploitation, Reporting

D. Cleanup, Reporting, Exploitation, Scanning

Solution

1. Step 1: Recall the standard penetration testing phases

   The typical order is Planning, Scanning (information gathering), Exploitation (attacking), then Reporting.

2. Step 2: Match the correct sequence

   Planning, Scanning, Exploitation, Reporting correctly lists the steps in the right order.

3. Final Answer:

   Planning, Scanning, Exploitation, Reporting -> Option C

4. Quick Check:

   Correct order = Planning, Scanning, Exploitation, Reporting [OK]

Hint: Think: Plan, scan, attack, then report [OK]

Common Mistakes:

• Mixing up the order of steps
• Starting with exploitation
• Reporting before testing

3. During a penetration test, a tester runs a scan and finds open ports 22 and 80. What is the next logical step?

medium

A. Ignore the ports and scan again

B. Report the open ports immediately

C. Clean up the system

D. Exploit vulnerabilities on services running on ports 22 and 80

Solution

1. Step 1: Understand the scanning results

   Open ports 22 (SSH) and 80 (HTTP) indicate services that can be tested for weaknesses.

2. Step 2: Decide the next step in methodology

   After scanning, the next step is exploitation, trying to find and use vulnerabilities on those services.

3. Final Answer:

   Exploit vulnerabilities on services running on ports 22 and 80 -> Option D

4. Quick Check:

   Scan -> Exploit next [OK]

Hint: Scan finds targets, next step is to test them [OK]

Common Mistakes:

• Reporting before exploitation
• Skipping exploitation step
• Ignoring open ports

4. A penetration tester forgot to clean up after testing and left test accounts active. What is the main issue with this?

medium

A. It violates the cleanup phase and may leave security risks

B. It improves system security

C. It speeds up the reporting process

D. It is part of the exploitation phase

Solution

1. Step 1: Identify the cleanup phase purpose

   The cleanup phase ensures no test artifacts or accounts remain that could be exploited later.

2. Step 2: Understand consequences of skipping cleanup

   Leaving test accounts active creates security risks and violates best practices.

3. Final Answer:

   It violates the cleanup phase and may leave security risks -> Option A

4. Quick Check:

   Cleanup prevents leftover risks [OK]

Hint: Always clean up to avoid leaving security holes [OK]

Common Mistakes:

• Thinking leftover accounts improve security
• Confusing cleanup with reporting
• Ignoring cleanup importance

5. A penetration tester finds a vulnerability during exploitation but decides not to report it because it seems minor. What is the best practice according to penetration testing methodology?

hard

A. Report all vulnerabilities found, regardless of severity

B. Only report vulnerabilities that are easy to exploit

C. Ignore minor vulnerabilities to save time

D. Report vulnerabilities only if the client asks

Solution

1. Step 1: Understand reporting responsibilities

   Penetration testing methodology requires reporting all findings to give a full security picture.

2. Step 2: Evaluate the options

   Ignoring minor vulnerabilities is not best practice; all should be reported for client awareness.

3. Final Answer:

   Report all vulnerabilities found, regardless of severity -> Option A

4. Quick Check:

   Report all findings for full transparency [OK]

Hint: Always report every vulnerability found [OK]

Common Mistakes:

• Ignoring minor issues
• Reporting only major vulnerabilities
• Waiting for client to ask