NXcrypt – Python Backdoor Framework

NXcrypt is a polymorphic crypter with Python backdoors. The output is completely unnoticeable. NXcrypt uses a multi-threading mechanism to inject a malicious python file into a regular file. Use the superuser’s permissions to run it. The output of NXcrypt is completely untraceable and is python based tool. NXcrypt tool is available on the Github platform for free and its open-source tool so you can also contribute to it.

Note: As NXcrpyt is a python-based utility, make sure you have Python2 installed on your Kali Linux system. To check the installation process, click here: Steps for installing Python on Linux.

Installation of NXcrypt Tool on Kali Linux OS

Step 1: Use the following command to install this tool in the Kali Linux system.

https://github.com/Hadi999/NXcrypt.git    

Step 2: To execute the tool, you must first navigate to the directory and then run the tool script for its usage.

cd NXcrypt

Step 3: Execute the below command to install all the required packages which are required for the execution of the NXcrypt tool.

sudo chmod 777 NXcrypt

Step 5: Verify the installation with the command below and check the help page of the tool for better understanding.

sudo ./NXcrypt.py -h

Using NXcrypt Tool on Kali Linux OS

Example 1: Encrypt meterpreter.py and the output file is output_backdoor.py

sudo ./NXcrypt.py –file=meterpreter.py –output=output_backdoor.py

In below the screenshot, we will display the meterpreter.py file

In this screenshot, we will encrypt the meterpreter.py file.

We will execute the following command for display output_backdoor.py file 

Example 2: Inject backdoor.py with shell.py into hacked.py with multi-threading system

sudo ./NXcrypt.py –backdoor-file=payload.py –file=shell.py –output=hacked.py

In this screenshot, we will execute the following command for the display shell.py file 

In this screenshot, we will execute the following command for the display backdoor.py

We will  Inject backdoor.py with shell.py into hacked.py with a multi-threading system

In the below screenshot we have displayed the content of backdoor.py, shell.py, hacked.py