Ghostwriting.sh

Ghostwriting Malware Bypass Technique

• Ghostwriting is a bypass technique that involves modifying the structure of the malware code without affecting its functionality.

• This can be done by deconstructing the assembly code and adding arbitrary code.

• Attackers use this technique to bypass endpoint device security agents such as antivirus software and hide malware to evade signature-based detection.

Ghostwriting.sh

Attackers use tools such as Ghostwriting.sh to modify the malware structure.

Ghostwriting works by:

• Binary deconstruction
• Insertion of arbitrary assembly code
• Reconstruction

It uses built-in metasploit tools to perform these actions. Ghostwriting.sh automates this process.

Example Scenario

Run the following commands to execute the Ghostwriting.sh script:

# Change directory to where the Ghostwriting.sh script is loaded
cd /opt/ghostwriting/

# Execute the script with sudo privileges
sudo ./ghostwriting.sh

What the script does

• Downloads and installs missing dependencies
• Creates a MeterPreter reverse TCP binary file to connect to the machine’s private IP address
• Disassembles the executable and inserts junk code for signature evasion
• Reassembles the binary code with the junk code
• Opens a web server on the machine’s IP address to facilitate file transfer to the victim machine

This helps attackers avoid endpoint security systems.

Output Example

****************************************************
Opening webserver on <IP_Address>:8000 for file transfer
Ctrl+C to continue after file transfer
****************************************************
Serving HTTP on 0.0.0.0 port 8000 ...

Do you want me to also add syntax highlighting for assembly snippets (like junk code insertion), so it looks even cleaner for a cybersecurity report or training doc?