I actually wanted to explore ways to use menues on my little I2C OLED display. So I set out to combine testing for weak WiFi passwords and findind a way to make easy to use menus.
But menues need buttons and there was no space left on my little breadboard between the NodeMCU dev module and the OLED. So I looked for smaller breadboard-ready ESP8266 dev modules and found this inexpensive ESP8266 Dev Mini Module.
Further research showed that this might be pretty much a knockoff of the Wemos D1 Mini, I hadn't seen before.
This board has a lot less pins as compared to a full NodeMCU dev board. But all the important ones seem to be there. The board came with a set of headers and I decided to make the USB stuff the bottom side, so I can see the LED on the ESP-12F module.
|Top view: ESP-12f
|Bottom view: USB
So my first project with this board was a very simple WiFi security scanner that lists all available AccessPoints (excluding the invisible ones) and try to get in with a list of passwords stored in the SPIFFS file system.
Here is my video about both the module and the Wifi Security tester.
|Fritzing schematic of the WiFi scanner
I use interrupts (falling edge) on the GPIO pins to trigger functions that increment or decrement the menu selection bar.
Good WPA/WPA2 password lists are shipped with Kali linux, but these are *WAY* too big to fit on the module's file system. You have to ressort to "educated guessing" there,
If you are looking for the code for the Wifi-Security tester, it is up on my GitHub repository. It still needs quite a lot of cleanup and a few functions should be rewritten, so beware!