A penetration tester discovers a remote command injection vulnerability in a Java-based web application on a Windows server. The tester wants to execute a PowerShell reverse shell. Which encoding technique is most effective to avoid filter restrictions on special characters?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Best answer
Base64 encoding
PowerShell supports -EncodedCommand, allowing the entire command to be Base64-encoded, which evades many filter restrictions on special characters.
Distractor review
URL encoding
URL encoding only encodes specific characters for HTTP transmission; it does not bypass application-level input filters that scan for command injection patterns.
Distractor review
Unicode encoding
Unicode encoding is not typically used to obfuscate PowerShell commands; it may also not be decoded by the shell automatically.
Distractor review
Hex encoding
Hex encoding is used for certain contexts like binary data, but PowerShell does not natively execute hex-encoded commands without additional decoding.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Related practice questions
Related PT0-002 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A penetration tester is writing the executive summary for a report. The client's CEO needs to understand the business impact of a critical SQL injection vulnerability. Which of the following should the tester include?
Question 2
A penetration tester has gained a low-privileged shell on a Linux server. During enumeration, the tester discovers a binary with the SUID bit set that belongs to root and is known to have a buffer overflow vulnerability. What is the MOST effective next step to escalate privileges?
Question 3
A penetration tester is performing passive reconnaissance against a target domain. Which of the following resources can be used to gather information about the target without directly sending packets to the target's network? (Select two.) (Choose 2.)
Question 4
A penetration tester has obtained a TGT from a domain controller by cracking the krbtgt hash. Which attack can the tester now perform to gain persistent administrative access to any resource in the domain?
Question 5
A penetration tester is writing the executive summary for the final report. The CEO needs to understand the overall risk level and the business impact of the findings. Which of the following should be included in the executive summary?
Question 6
A penetration tester is writing the executive summary of a penetration test report. Which of the following elements is MOST important to include for a non-technical audience?
FAQ
Questions learners often ask
What does this PT0-002 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Base64 encoding — Base64 encoding is commonly used for PowerShell commands because it avoids many character-based filters and can be decoded by PowerShell using the -EncodedCommand parameter. URL encoding may not bypass filters that block certain characters, Unicode encoding is less common in this context, and hex encoding is not natively supported by PowerShell for command execution.
What should I do if I get this PT0-002 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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