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Question 39 - PT0-003 discussion

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A penetration tester needs to confirm the version number of a client's web application server. Which of the following techniques should the penetration tester use?

A.
SSL certificate inspection
Answers
A.
SSL certificate inspection
B.
URL spidering
Answers
B.
URL spidering
C.
Banner grabbing
Answers
C.
Banner grabbing
D.
Directory brute forcing
Answers
D.
Directory brute forcing
Suggested answer: C

Explanation:

Banner grabbing is a technique used to gather information about a service running on an open port, which often includes the version number of the application or server. Here's why banner grabbing is the correct answer:

Banner Grabbing: It involves connecting to a service and reading the welcome banner or response, which typically includes version information. This is a direct method to identify the version number of a web application server.

SSL Certificate Inspection: While it can provide information about the server, it is not reliable for identifying specific application versions.

URL Spidering: This is used for discovering URLs and resources within a web application, not for version identification.

Directory Brute Forcing: This is used to discover hidden directories and files, not for identifying version information.

Reference from Pentest:

Luke HTB: Shows how banner grabbing can be used to identify the versions of services running on a server.

Writeup HTB: Demonstrates the importance of gathering version information through techniques like banner grabbing during enumeration phases.

Conclusion:

Option C, banner grabbing, is the most appropriate technique for confirming the version number of a web application server.

asked 02/10/2024
Ahmed Khan
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