Password Cracking

Password Cracking:SNMP

In this article, we will learn how to gain control over our victim’s SNMP service. There are various ways to do it and let take time and learn all those because different circumstances call for a different measure.


Hydra is often the tool of choice. It can perform rapid dictionary attacks against more than 50 protocols, including telnet, FTP, HTTP, HTTPS, smb, several databases, and much more

Now, we need to choose a word list. As with any dictionary attack, the wordlist is key. Kali has numerous wordlists built right in.

Run the following command

hydra -P /root/Desktop/pass.txt snmp

-P:  denotes the path for the password list

Once the commands are executed it will start applying the dictionary attack and so you will have the right username and password in no time. As you can observe that we had successfully grabbed the SNMP password as ignite123.


This is the graphical version to apply dictionary attack via SNMP port to hack a system. For this method to work:

Open xHydra in your Kali. And select Single Target option and their give the IP of your victim PC. And select SNMP in the box against Protocol option and give the port number 161 against the port option.

Now, go to Passwords tab and in Username section check the box adjacent to Protocol doesn’t require a username.

Then select Password List and give the path of your text file, which contains all the passwords, in the box adjacent to it.

Now go to the specific Tab and in the SNMP and clear the data written in the text box below the SNMP as shown in the given image.

When you will clear all entries it will look like as shown in the next image given below.

After doing this, go to the Start tab and click on the Start button on the left.

Now, the process of dictionary attack will start. Thus, you will obtain the password of your victim.

As you can see that we have the password ignite123 cracked.


Medusa is intended to be a speedy, massively parallel, modular, login brute-forcer. It supports many protocols: AFP, CVS, FTP, HTTP, IMAP, rlogin, SSH, SNMP, and VNC to name a few

Run the following command

medusa -M snmp -h –u ignite -P /root/Desktop/pass.txt


-h: denotes host IP

-u: denote a particular user

But Brute forcing SNMP doesn’t require username but medusa doesn’t work without a proper syntax, you can use any username of your choice

P:  denotes the path for the password list

As you can observe that we had successfully grabbed the SNMP password as ignite123.


This module will test SNMP logins on a range of machines and report successful logins. If you have loaded a database plugin and connected to a database this module will record successful logins and hosts so you can track your access.

Open Kali terminal type msfconsole

use auxiliary/scanner/snmp/snmp_login
msf auxiliary(scanner/snmp/snmp_login)> set rhosts
msf auxiliary(scanner/snmp/snmp_login)> set pass_file /root/Desktop/pass.txt
msf auxiliary(scanner/snmp/snmp_login)> set stop_on_success true
msf auxiliary(scanner/snmp/snmp_login)> run

 From given below image you can observe that we had successfully grabbed the SNMP password.


We can also crack the SNMP password using nmap, execute given below command.

nmap -sU –p 161 –n --script snmp-brute --script-args snmp-brute.communitiesdb=/root/Desktop/pass.txt

As you can see above that we have the password cracked as ignite123.


Onesixtyone is an SNMP scanner that sends multiple SNMP requests to multiple IP addresses, trying different community strings and waiting for replies.

onesixtyone -c /root/Desktop/pass.txt

As you can see above that we have the password cracked as ignite123 using onesixtyone


Author: Pavandeep Singh is a Technical Writer, Researcher and Penetration Tester Contact here