Password Spraying / Brute Force
Last updated
Last updated
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Once you have found several valid usernames you can try the most common passwords (keep in mind the password policy of the environment) with each of the discovered users. By default the minimum password length is 7.
Lists of common usernames could also be useful: https://github.com/insidetrust/statistically-likely-usernames
Notice that you could lockout some accounts if you try several wrong passwords (by default more than 10).
If you have some user credentials or a shell as a domain user you can get the password policy with:
Using crackmapexec:
Using kerbrute (Go)
spray (you can indicate number of attempts to avoid lockouts):
Using kerbrute (python) - NOT RECOMMENDED SOMETIMES DOESN'T WORK
With the scanner/smb/smb_login module of Metasploit:
Using rpcclient:
With Rubeus version with brute module:
With Invoke-DomainPasswordSpray (It can generate users from the domain by default and it will get the password policy from the domain and limit tries according to it):
There are multiples tools for password spraying outlook.
With MSF Owa_login
with MSF Owa_ews_login
With Ruler (reliable!)
With DomainPasswordSpray (Powershell)
With MailSniper (Powershell)
To use any of these tools, you need a user list and a password / a small list of passwords to spray.
Deepen your expertise in Mobile Security with 8kSec Academy. Master iOS and Android security through our self-paced courses and get certified:
Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)
