I’ve been researching/experimenting with WiFi hacking and was frustrated with the process of configuring a Raspberry Pi Zero W to be setup the correct way. There are lots of posts on the Web covering how to do this, but what I really wanted is an image I could just load onto a SD card and boot into the system right away.
The best way to create a Raspbian distribution is to use the Pi-Gen tool. This can be found here. What I learned from doing the process myself is:
- Use Debian Buster / 386 as your building base.
- Take advantage of the
APT_PROXYoption. This allows the packages to be cached, speeding up subsequent builds. - If using Docker, increase the Disk Image size to at least 100G.
I created a distribution I call cap-zero. It is a fork of pi-gen to build a system that uses the onboard WiFi to create an access point named cap-zero. There is no authentication for assocation. The ssh daemon runs automatically. Mosh is installed as well. The following WiFi hacking tools are installed:
- bettercap
- aircrack-ng and related tools
- bully
Plugging in a USB WiFi causes that adapter to be put into monitor mode, therefore allowing WiFi hacking from it. cap-zero can be found at GitHub. Feel free to fork it or ask for improvements. My original goal is to have a very minimal system, but as I explore WiFi hacking, I’ll probably expand it.