Hydra

Introduction

Hydra is a powerful tool for performing brute-force attacks on various services. It supports a wide range of protocols and can be used to test the security of your systems by identifying weak passwords.

Table of Contents

• Introduction
• Installation
• Usage
• Examples
  • Example 1: SSH Brute Force
  • Example 2: FTP Brute Force
  • Example 3: Web Form Brute Force
  • Example 4: SMTP Brute Force
  • Example 5: MySQL Brute Force
  • Example 6: RDP Brute Force
  • Example 7: Telnet Brute Force
  • Example 8: HTTP Basic Authentication Brute Force
  • Example 9: VNC Brute Force
  • Example 10: SNMP Brute Force
• Best Practices
• Contributing
• Credits
• License

Installation

To install Hydra, follow these steps:

1. Clone the repository:

   git clone https://github.com/vanhauser-thc/thc-hydra

2. Change to the Hydra directory:

   cd thc-hydra

3. Compile Hydra:

   ./configure
   make
   make install

Usage

Hydra can be used to perform brute-force attacks on various services. Here is a basic usage example:

hydra -L username_list.txt -P password_list.txt target_ip ssh

Examples

Here are some pseudocode examples to illustrate how Hydra can be used:

Example 1: SSH Brute Force

// Define the target IP and the protocol
target_ip = "192.168.1.1"
protocol = "ssh"

// Define the username and password lists
username_list = ["admin", "user", "test"]
password_list = ["password123", "admin", "123456"]

// Execute the brute force attack
hydra -L username_list -P password_list target_ip protocol

Example 2: FTP Brute Force

// Define the target IP and the protocol
target_ip = "192.168.1.2"
protocol = "ftp"

// Define the username and password lists
username_list = ["ftpuser", "anonymous"]
password_list = ["ftp123", "anonymous"]

// Execute the brute force attack
hydra -L username_list -P password_list target_ip protocol

Example 3: Web Form Brute Force

// Define the target URL and the protocol
target_url = "http://example.com/login"
protocol = "http-post-form"

// Define the username and password lists
username_list = ["admin", "user"]
password_list = ["admin123", "password"]

// Define the login form parameters
form_parameters = "/login:username=^USER^&password=^PASS^:Invalid username or password"

// Execute the brute force attack
hydra -L username_list -P password_list target_url protocol form_parameters

Example 4: SMTP Brute Force

// Define the target IP and the protocol
target_ip = "192.168.1.3"
protocol = "smtp"

// Define the username and password lists
username_list = ["admin@example.com", "user@example.com"]
password_list = ["admin123", "password"]

// Execute the brute force attack
hydra -L username_list -P password_list target_ip protocol

Example 5: MySQL Brute Force

// Define the target IP and the protocol
target_ip = "192.168.1.4"
protocol = "mysql"

// Define the username and password lists
username_list = ["root", "admin"]
password_list = ["rootpass", "adminpass"]

// Execute the brute force attack
hydra -L username_list -P password_list target_ip protocol

Example 6: RDP Brute Force

// Define the target IP and the protocol
target_ip = "192.168.1.5"
protocol = "rdp"

// Define the username and password lists
username_list = ["Administrator", "User"]
password_list = ["admin123", "password"]

// Execute the brute force attack
hydra -L username_list -P password_list target_ip protocol

Example 7: Telnet Brute Force

// Define the target IP and the protocol
target_ip = "192.168.1.6"
protocol = "telnet"

// Define the username and password lists
username_list = ["root", "admin"]
password_list = ["toor", "admin123"]

// Execute the brute force attack
hydra -L username_list -P password_list target_ip protocol

Example 8: HTTP Basic Authentication Brute Force

// Define the target URL and the protocol
target_url = "http://example.com/protected"
protocol = "http-get"

// Define the username and password lists
username_list = ["admin", "user"]
password_list = ["admin123", "password"]

// Execute the brute force attack
hydra -L username_list -P password_list target_url protocol

Example 9: VNC Brute Force

// Define the target IP and the protocol
target_ip = "192.168.1.7"
protocol = "vnc"

// Define the password list (VNC typically only uses a password)
password_list = ["password", "vncpass"]

// Execute the brute force attack
hydra -P password_list target_ip protocol

Best Practices

• Always ensure you have permission before performing any brute-force attacks.
• Use strong and unique passwords to protect your own systems.
• Regularly update Hydra to benefit from the latest features and security updates.

Contributing

Contributions are welcome! Please submit a pull request or open an issue to discuss your ideas.

Credits

Hydra is developed by van Hauser and other contributors. See Link

License

Hydra is licensed under the GNU AFFERO GENERAL PUBLIC LICENSE.