PT0-002 Practice Test 9 — 10 Questions

Question 1

A client requests a penetration test of their web application, but they want to exclude all third-party APIs from the scope. Where should this exclusion be documented?

Accepted Answer

Rules of Engagement. The Rules of Engagement (ROE) document is the authoritative source for defining the scope, boundaries, and constraints of a penetration test, including explicit exclusions such as third-party APIs. This document is established during the planning and scoping phase to ensure both the client and the testing team agree on what is and is not in scope, preventing legal or operational issues. Without documenting the exclusion in the ROE, the tester might inadvertently interact with the third-party APIs, violating the agreement and potentially causing service disruptions or legal liabilities.

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Executive Summary

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Findings Report

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Remediation Plan

Question 2

During a penetration test, you want to perform a stealthy port scan that minimizes the chance of being logged by the target. Which Nmap option should you use?

Accepted Answer

-sS. SYN scan (-sS) is considered stealthy because it does not complete the TCP handshake, reducing the likelihood of being logged compared to a full connect scan.

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-sU

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-sV

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-sT

Question 3

During a penetration test, you want to discover API endpoints and hidden parameters in a web application. Which tool combination is most effective for this task?

Accepted Answer

Arjun and ffuf. Arjun is specifically designed for parameter discovery, while ffuf can be used to bruteforce both directories and parameters. Together they effectively find API endpoints and parameters. gobuster is for directory/file enumeration, not specifically for parameters.

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Wappalyzer and curl

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WhatWeb and theHarvester

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Gobuster and Nikto

Question 4

A penetration tester is performing passive reconnaissance on a target organization. The tester wants to gather information about the target's technology stack, including web server software and frameworks, without directly interacting with the target systems. Which technique is most effective?

Accepted Answer

Querying public records with BuiltWith. BuiltWith is a passive reconnaissance tool that queries public web data and DNS records to identify a target's technology stack, such as web server software (e.g., Apache, Nginx) and frameworks (e.g., React, Django), without sending any packets to the target's systems. This makes it ideal for passive information gathering, as it relies on third-party databases and cached information rather than direct interaction.

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Running Nmap with the -A flag against the target's public IP range

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Using theHarvester to search for email addresses and subdomains

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Performing a DNS zone transfer

Question 5

During a penetration test of a large e-commerce platform, the client requests additional testing on a newly discovered microservice mid-engagement. The scope defined in the rules of engagement (ROE) explicitly lists all target systems. What should the penetration tester do FIRST?

Accepted Answer

Inform the client that a scope amendment is needed and pause testing on the microservice until it is approved. The rules of engagement (ROE) are a legally binding document that defines the scope of testing. Adding a new microservice mid-engagement without an approved scope amendment violates the ROE and could lead to legal or contractual issues. The penetration tester must first pause testing on the microservice and formally request a scope amendment to ensure all activities remain authorized.

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Add the microservice to the test and include it in the final report as an unadvertised finding

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Decline the request because the microservice was not part of the original scope

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Test the microservice only if it is using the same technology stack as other targets

Question 6

A penetration tester is analyzing a Python script that uses the 'requests' library to send HTTP POST requests to a target URL with different payloads. The script also implements a retry mechanism with exponential backoff. What is the most likely purpose of this script?

Accepted Answer

Password spraying. The script sends HTTP POST requests with different payloads and implements a retry mechanism with exponential backoff. This behavior is characteristic of password spraying, where an attacker attempts a small number of common passwords against many usernames to avoid account lockouts. The exponential backoff helps evade rate-limiting and intrusion detection systems by gradually increasing delays between attempts.

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Directory brute-forcing

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SQL injection testing

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Session hijacking

Question 7

A penetration tester gained low-privileged access to a Linux server and found that the user can run a custom script located at /opt/tool/backup.sh with setuid root. The script begins with a hashbang #!/bin/bash and uses an internal variable defined as BASEDIR=$(dirname $0) to determine paths. Which technique is most likely to allow privilege escalation?

Accepted Answer

Create a malicious executable named 'dirname' in a directory earlier in the PATH. The script uses `BASEDIR=$(dirname $0)` to resolve paths. If the user can place a malicious executable named `dirname` earlier in the PATH than the legitimate `/usr/bin/dirname`, then when the script runs with setuid root, the shell will execute the attacker's `dirname` binary instead, allowing arbitrary code execution as root.

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Modify the $0 variable during execution

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Overwrite /opt/tool/backup.sh with a reverse shell

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Exploit a buffer overflow in the Bash interpreter

Question 8

A penetration testing firm is scoping a test for a financial institution. The client insists that the test only be performed on systems located in the corporate headquarters, excluding cloud-based infrastructure and remote branch offices. Which of the following should the penetration tester emphasize during the scoping discussion?

Accepted Answer

The exclusion of cloud infrastructure may leave critical assets untested. The client's exclusion of cloud-based infrastructure and remote branch offices creates a significant gap in the test scope. A penetration test that ignores cloud assets (e.g., AWS, Azure, or SaaS applications) may miss critical vulnerabilities in systems that process or store sensitive financial data, as these are often part of the institution's attack surface. The tester must emphasize that such exclusions can lead to a false sense of security, as attackers frequently target cloud and remote assets due to their accessibility and potential misconfigurations.

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The test will include social engineering of remote employees

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The test can only be performed during off-hours

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The tester will require VPN access to the corporate network

Question 9

A penetration tester is using a vulnerability scanner to assess an internal network. The scanner reports a critical vulnerability in a custom web application, but manual verification shows the application is not vulnerable. Which of the following is the MOST likely cause of this false positive?

Accepted Answer

The scanner detected a vulnerable library used by the application, but the application's implementation does not expose the vulnerable code path. Vulnerability scanners often identify libraries or components with known CVEs, but they cannot determine whether the application's code actually invokes the vulnerable functions. In this case, the scanner flagged a library with a known vulnerability, but the custom web application's implementation does not expose the vulnerable code path, resulting in a false positive. This is a common limitation of static or version-based detection versus dynamic, context-aware analysis.

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The scanner used an outdated vulnerability database that does not match the application's patches

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The scanner identified the application version from the HTTP response header, but the vulnerability was already patched in that version

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The scanner performed an exploit attempt that succeeded on a different service on the same host

Question 10

A penetration tester has compromised a Linux server and wants to move laterally to a Windows server. The Linux server has network access to the Windows server on port 445. The tester has a captured NTLM hash of a domain administrator account. Which technique is most likely to allow the tester to authenticate and execute commands on the Windows server?

Accepted Answer

Pass-the-hash using Impacket's psexec. The tester has a captured NTLM hash of a domain administrator account and network access to the Windows server on port 445 (SMB). Pass-the-hash (PtH) allows authentication using the NTLM hash directly without needing the plaintext password. Impacket's psexec uses the SMB protocol to authenticate with the hash and execute commands remotely, making it the most direct and effective technique for lateral movement in this scenario.

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Kerberos Golden Ticket attack

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SMB relay attack using the hash

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Brute-force password cracking of the hash