Certified Ethical Hacker (CEH v13) — Question 90

Allen, a professional pen tester, was hired by XpertTech Solutions to perform an attack simulation on the organization’s network resources. To perform the attack, he took advantage of the NetBIOS API and targeted the NetBIOS service. By enumerating NetBIOS, he found that port 139 was open and could see the resources that could be accessed or viewed on a remote system. He came across many NetBIOS codes during enumeration.
Identify the NetBIOS code used for obtaining the messenger service running for the logged-in user?

Answer options

• A. <00>
• B. <20>
• C. <03>
• D. <1B>

Correct answer: C

Explanation

The correct answer is <03>, which is used to identify the messenger service associated with the currently logged-in user in NetBIOS. The other codes, such as <00>, <20>, and <1B>, serve different purposes; <00> is for the workstation service, <20> is for file and printer sharing, and <1B> is for the domain master browser.