312-50V12 · Question #170
A network security analyst, while conducting penetration testing, is aiming to identify a service account password using the Kerberos authentication protocol. They have a valid user authentication tic
The correct answer is D. Request a service ticket for the service principal name of the target service account. To perform a Kerberoasting attack after obtaining a TGT, the analyst must first request a service ticket for the target service principal name (SPN). This action will return an encrypted service ticket containing a hash that can then be cracked offline.
Question
Options
- ACarry out a passive wire sniffing operation using Internet packet sniffers
- BPerform a PRobability INfinite Chained Elements (PRINCE) attack
- CExtract plaintext passwords, hashes, PIN codes, and Kerberos tickets using a tool like Mimikatz
- DRequest a service ticket for the service principal name of the target service account
How the community answered
(41 responses)- A5% (2)
- B2% (1)
- C10% (4)
- D83% (34)
Why each option
To perform a Kerberoasting attack after obtaining a TGT, the analyst must first request a service ticket for the target service principal name (SPN). This action will return an encrypted service ticket containing a hash that can then be cracked offline.
Carrying out a passive wire sniffing operation is a general network analysis technique but does not actively generate the specific Kerberos service ticket needed for a Kerberoasting attack to obtain the target service account's hash.
A PRINCE attack is a advanced password cracking methodology used to guess passwords from a dictionary or list, and it is performed *after* the service account hash has been obtained, not as a step to acquire the hash itself.
Extracting plaintext passwords, hashes, or tickets using tools like Mimikatz is often done *after* a Kerberos service ticket has been obtained and imported, or to dump credentials already present in memory, but the immediate next step in Kerberoasting is to *generate* the service ticket to be cracked.
In a Kerberoasting attack, after a valid TGT is acquired, the next crucial step is to request a service ticket (TGS-REQ) for a specific Service Principal Name (SPN) associated with the target service account. The Key Distribution Center (KDC) will encrypt this service ticket using the NTLM hash of the service account's password, which can then be extracted from the ticket and cracked offline.
Concept tested: Kerberoasting attack methodology and steps
Source: https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/manage/understand-kerberos-and-active-directory
Topics
Community Discussion
No community discussion yet for this question.