How to Install John The Ripper on Termux

Welcome to TerminalTools! In this guide, we'll show you how to install John The Ripper in Termux , a powerful terminal emulator for Android devices. If you're a cybersecurity enthusiast or interested in ethical hacking tools, this tutorial will help you get John The Ripper up and running on your smartphone. What is Termux? Termux is a feature-rich terminal emulator that provides a Linux-like environment on Android devices. It allows you to run command-line tools, programming languages, and penetration testing utilities directly from your phone. Whether you're a developer, hacker, or security researcher, Termux offers a lightweight and versatile way to perform tasks typically done on a traditional Linux system. What is John The Ripper? John The Ripper (JtR) is an open-source password cracking tool used for penetration testing and security auditing. It supports various encryption algorithms and hash formats, making it a valuable tool for ethical hackers and cybersecurity professionals. With John The Ripper , you can: Perform dictionary-based and brute-force attacks Crack password hashes Test system security for weak passwords Now, let's install it on Termux and start using it. Prerequisites Before installing John The Ripper , ensure that: Your Android device has at least 1GB RAM and sufficient storage You have a stable internet connection Termux is installed on your device (Follow Step 1 below if not) Installation Steps Follow these steps carefully to install John The Ripper in Termux : Step 1: Update and Upgrade Termux The first step is to update and upgrade Termux, use this command: pkg update && pkg upgrade -y Step 2: Install Required Packages To install the necessary dependencies, run: pkg install git clang make -y Step 3: Clone John The Ripper Repository Download the official John The Ripper source code from GitHub: git clone https://github.com/openwall/john.git Step 4: Navigate to the Directory Move into the John The Ripper folder: cd john Step 5: Build and Compile John The Ripper Compile the source code to ensure compatibility with Termux : cd src ./configure && make -s clean && make -sj4 Step 6: Run John The Ripper Once the installation is complete, navigate to the run directory: cd ../run To verify the installation, check the version: ./john --version If everything is set up correctly, you should see the John The Ripper version details displayed on your screen. How to Use John The Ripper in Termux After installation, you can start using John The Ripper for password cracking. Here are some basic usage commands: 1. Check Available Hash Types ./john --list=formats 2. Crack a Password Hash If you have a password hash file (e.g., hashes.txt), use: ./john hashes.txt 3. Use a Custom Wordlist To use a custom dictionary file (wordlist.txt): ./john --wordlist=wordlist.txt hashes.txt 4. Show Cracked Passwords To display all cracked passwords: ./john --show hashes.txt Conclusion In this guide, we walked you through installing John The Ripper in Termux and demonstrated how to use it for password cracking and security auditing. Key Takeaways: John The Ripper is a powerful password-cracking tool Termux makes it possible to run it on Android devices Regularly update your tool to access new features and improvements Disclaimer: Use this tool only for ethical hacking and cybersecurity research. Unauthorized password cracking is illegal and unethical. For more cybersecurity tutorials and ethical hacking guides , stay tuned to TerminalTools! Found this guide helpful? Share it with your fellow cybersecurity enthusiasts! Originally published at TerminalTools

Apr 27, 2025 - 18:41

How to Install John The Ripper on Termux

Welcome to TerminalTools! In this guide, we'll show you how to install John The Ripper in Termux , a powerful terminal emulator for Android devices. If you're a cybersecurity enthusiast or interested in ethical hacking tools, this tutorial will help you get John The Ripper up and running on your smartphone.

What is Termux?

Termux is a feature-rich terminal emulator that provides a Linux-like environment on Android devices. It allows you to run command-line tools, programming languages, and penetration testing utilities directly from your phone. Whether you're a developer, hacker, or security researcher, Termux offers a lightweight and versatile way to perform tasks typically done on a traditional Linux system.

What is John The Ripper?

John The Ripper (JtR) is an open-source password cracking tool used for penetration testing and security auditing. It supports various encryption algorithms and hash formats, making it a valuable tool for ethical hackers and cybersecurity professionals.

With John The Ripper , you can:

Perform dictionary-based and brute-force attacks
Crack password hashes
Test system security for weak passwords

Now, let's install it on Termux and start using it.

Prerequisites

Before installing John The Ripper , ensure that:

Your Android device has at least 1GB RAM and sufficient storage
You have a stable internet connection
Termux is installed on your device (Follow Step 1 below if not)

Installation Steps

Follow these steps carefully to install John The Ripper in Termux :

Step 1: Update and Upgrade Termux

The first step is to update and upgrade Termux, use this command:

pkg update && pkg upgrade -y

Step 2: Install Required Packages

To install the necessary dependencies, run:

pkg install git clang make -y

Step 3: Clone John The Ripper Repository

Download the official John The Ripper source code from GitHub:

git clone https://github.com/openwall/john.git

Step 4: Navigate to the Directory

Move into the John The Ripper folder:

cd john

Step 5: Build and Compile John The Ripper

Compile the source code to ensure compatibility with Termux :

cd src
./configure && make -s clean && make -sj4

Step 6: Run John The Ripper

Once the installation is complete, navigate to the run directory:

cd ../run

To verify the installation, check the version:

./john --version

If everything is set up correctly, you should see the John The Ripper version details displayed on your screen.

How to Use John The Ripper in Termux

After installation, you can start using John The Ripper for password cracking. Here are some basic usage commands:

1. Check Available Hash Types

./john --list=formats

2. Crack a Password Hash

If you have a password hash file (e.g., hashes.txt), use:

./john hashes.txt

3. Use a Custom Wordlist

To use a custom dictionary file (wordlist.txt):

./john --wordlist=wordlist.txt hashes.txt

4. Show Cracked Passwords

To display all cracked passwords:

./john --show hashes.txt

Conclusion

In this guide, we walked you through installing John The Ripper in Termux and demonstrated how to use it for password cracking and security auditing.

Key Takeaways:

John The Ripper is a powerful password-cracking tool
Termux makes it possible to run it on Android devices
Regularly update your tool to access new features and improvements

Disclaimer: Use this tool only for ethical hacking and cybersecurity research. Unauthorized password cracking is illegal and unethical.

For more cybersecurity tutorials and ethical hacking guides , stay tuned to TerminalTools!

Found this guide helpful? Share it with your fellow cybersecurity enthusiasts!

Originally published at TerminalTools