Add any necessary dependencies by creating a file named “my_dependencies” in /etc/apt/sources.list.d/. For example, if you want to add the nmap package, add this line: deb http://http.kali.org/kali kali-rolling main contrib non-free
3. Run apt update and then install any additional packages that are required for your custom image by running apt install or apt install /. For example, to add nmap from the kali-rolling repository, run: apt install nmap/kali-rolling
4. Create a new file named “my_customization” in /opt/kali-live-custom/. This is where you can customize your Kali Live image by adding scripts or configuration files that will be executed during the installation process. For example, if you want to add a script that installs and configures nmap, create a new file named “my_nmap_script” in /opt/kali-live-custom/. 5. Run mkimage -C /boot/grub -o . For example, to create an ISO image from the Kali Live CD that includes your customizations and additional packages, run: mkimage -C /boot/grub -o kali-live-custom.iso initrd.gz config
6. Burn the ISO image to a DVD or USB drive using your preferred method (such as dd or unetbootin). 7. Boot from the custom Kali Live CD and enjoy! Your customizations and additional packages will be available during the installation process, making it easy to promote your favorite tools and utilities to other users. To avoid any issues with building custom Kali Live ISO images for persistence and promotion using apt-cacher-ng as a caching proxy, ensure that you have a stable internet connection and enough storage space on your computer or server. Also, make sure that all necessary dependencies are installed before proceeding with the build process. If you encounter any errors during the installation of additional packages, check the package documentation to see if there are any prerequisites that need to be met first. Finally, test your custom Kali Live ISO image thoroughly to ensure that it works as expected and does not contain any security vulnerabilities or other issues.