PT0-002 Practice Test 2 — 10 Questions

Question 1

A client requests a penetration test of their internal network. During scoping, the tester learns that the client uses a managed security service provider (MSSP) that monitors all network traffic. The client does not want the MSSP to be informed about the test. What is the most appropriate action for the tester to take?

Accepted Answer

Advise the client to inform the MSSP about the scheduled test and coordinate a maintenance window or exclusion list. Option C is correct because failing to inform the MSSP could trigger automated incident response actions (e.g., IPS blocking, SIEM alerting, or even network isolation) that disrupt the test and potentially cause false-positive security incidents. Coordinating a maintenance window or exclusion list ensures the MSSP's monitoring tools (like Snort, Suricata, or proprietary NDR) do not interfere with legitimate test traffic, preserving both test integrity and the client's operational security.

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Proceed with the test without informing the MSSP, as the client has requested confidentiality

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Include a clause in the rules of engagement that holds the tester harmless for any disruptions caused by the MSSP's monitoring

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Perform the test only after hours to minimize the chance of the MSSP detecting the test activity

Question 2

A penetration tester has gained access to a Windows domain and wants to perform a Kerberoasting attack. Which account privileges are required to request service tickets for Kerberoasting?

Accepted Answer

Any domain user. Kerberoasting exploits the Kerberos protocol's TGS-REP step, where any domain user can request a service ticket for any service principal name (SPN) in Active Directory. The domain controller returns the ticket encrypted with the service account's NTLM hash, which the attacker can then crack offline. No special privileges beyond being a valid domain user are required because the TGS request is part of normal Kerberos authentication.

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Domain Admin

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Local Administrator on the domain controller

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Enterprise Admin

Question 3

A client engages a penetration testing firm to evaluate the security of their internal network. During the scoping meeting, the client states that they use a network access control (NAC) solution that might block the tester's machine if it is connected to the internal network without prior authorization. Which of the following should be included in the rules of engagement to address this potential issue?

Accepted Answer

Add a clause requiring the client to whitelist the tester's MAC address in the NAC policy before testing.. Option D is correct because whitelisting the tester's MAC address in the NAC policy allows the tester's machine to connect to the internal network without being blocked, while keeping the NAC solution active for other devices. This approach preserves the real-world security posture of the client's environment and ensures the tester can perform internal network assessments as scoped. It is a standard practice in penetration testing to request MAC address whitelisting to avoid false positives from NAC enforcement.

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Include a requirement that the client disables NAC during the testing window.

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State that the tester will not connect to the internal network and will only test externally.

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Specify that the tester will bypass NAC as part of the test objectives.

Question 4

A penetration test report includes a finding about a SQL injection vulnerability in a public-facing web application. Which section of the report would be the MOST appropriate place to provide step-by-step remediation instructions for the development team?

Accepted Answer

Technical Findings. Option C is correct because the Technical Findings section of a penetration test report is designed to provide detailed, step-by-step remediation instructions for technical audiences, such as the development team. This section includes specific code-level fixes, parameterized query examples, and input validation techniques to address the SQL injection vulnerability, ensuring the team can implement precise changes.

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Executive Summary

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Risk Assessment

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Appendices

Question 5

A penetration tester has gained a shell on a Linux machine as a low-privileged user. The user can execute the binary 'less' with sudo privileges without a password. Which technique can the tester use to escalate privileges to root?

Accepted Answer

Use the '!' command within 'less' to execute a shell.. The 'less' binary, when executed with sudo, retains its ability to spawn a shell via the '!' command. Since the user can run 'less' as root without a password, typing '!/bin/bash' (or simply '!bash') inside 'less' will execute a shell with root privileges, effectively escalating to root.

Answer

Exploit a buffer overflow in the 'less' binary.

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Run 'sudo -u root bash' to switch to a root shell.

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Modify the PATH to trick sudo into running a malicious binary.

Question 6

A penetration tester is analyzing a Python script that performs a buffer overflow attack. The script imports the struct module and the socket module. It constructs a payload by packing a pattern of characters, then overwriting a return address with a specific offset. Which of the following is the most critical piece of information the tester must determine before running this script against the target?

Accepted Answer

The exact location of a JMP ESP instruction in memory. The script performs a buffer overflow attack by overwriting a return address. To redirect execution to attacker-controlled shellcode, the tester must overwrite the return address with the address of a JMP ESP instruction (or equivalent) that is reliably located in memory. Without this address, the overwritten return pointer will cause a crash or unpredictable behavior, making exploitation impossible.

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The IP address and port of the target service

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The version of the operating system running on the target

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The username and password for the target service

Question 7

A penetration tester is analyzing a Python script used during a test. The script contains the following code: 'import requests; r = requests.get('http://target', headers={'User-Agent': 'Mozilla/5.0'}); print(r.text)'. What is the primary purpose of setting the User-Agent header in this script?

Accepted Answer

To mimic a legitimate browser to evade detection by web application firewalls.. Setting the User-Agent header to 'Mozilla/5.0' makes the HTTP request appear to originate from a standard web browser rather than a Python script. This helps evade detection by web application firewalls (WAFs) and other security controls that may block or flag requests with non-browser User-Agent strings, which are common indicators of automated or malicious traffic.

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To bypass IP-based rate limiting.

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To authenticate to the web server.

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To enable SSL/TLS encryption.

Question 8

A client hires a penetration testing firm to assess a web application that integrates with a third-party API for payment processing. The client wants to include the API endpoint in the test scope. What should the penetration tester do FIRST to ensure the test is conducted ethically and legally?

Accepted Answer

Obtain written authorization from the third-party API provider. Option B is correct because the penetration tester must obtain explicit written authorization from the third-party API provider before testing. Without this, testing the API endpoint could violate the Computer Fraud and Abuse Act (CFAA) or similar laws, as the tester would be accessing a system they do not own or have contractual permission to test. The client's scope inclusion does not grant legal access to the third-party's infrastructure.

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Assume the client has already obtained permission from the API provider

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Rely on the client's statement that the API is within scope

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Test only the client's application code and ignore the API

Question 9

A client with a hybrid infrastructure (on-premises and cloud IaaS) requests a penetration test covering both environments. The cloud provider's terms of service require notification and restrict scanning to specific IP ranges. In which document should these constraints be documented?

Accepted Answer

Rules of Engagement (ROE). The Rules of Engagement (ROE) document is the authoritative source for defining the legal and technical boundaries of a penetration test, including provider-mandated constraints such as notification requirements and restricted IP ranges. In a hybrid infrastructure with cloud IaaS, the ROE must explicitly list the allowed source IPs, target CIDR blocks, and any time windows or rate limits imposed by the cloud provider to ensure compliance with their terms of service. This document is signed by both the client and the testing team before any testing begins, making it the correct place to document these operational constraints.

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Non-Disclosure Agreement (NDA)

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Penetration Testing Report

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Scope of Work (SOW)

Question 10

A penetration tester has gained a foothold on a Linux server through a vulnerable web application. The server has an outbound firewall that blocks all traffic except DNS queries (UDP 53). The tester needs to establish a reverse shell to maintain access. Which technique is most likely to succeed?

Accepted Answer

Encode the payload in Base64 and use DNS tunneling to execute commands. Option B is correct because DNS tunneling encapsulates non-DNS traffic (e.g., command output) within DNS query and response packets, which are allowed through the firewall on UDP port 53. This technique bypasses the outbound firewall restriction by making the malicious traffic appear as legitimate DNS queries, enabling the tester to execute commands and exfiltrate data without triggering network-level blocks.

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Use a bind shell on a high TCP port and connect from the tester's machine

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Attempt a reverse shell over HTTP using TCP port 80

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Use SSH reverse port forwarding to the tester's server on port 443