Marauder is a tool for hacking WiFi networks. It is a collection of tools that can be used to perform WiFi attacks. It is designed to be used with the Flipper Zero.
These are the directions for updating the firmware on the ESP32.
This secret_ssid is a tool that can be used to send a secret message over WiFi. The message is encoded into a SSID, which is then sent out over WiFi. The message can be decoded on a PC.