Nexmon: Firmware-Patching-Framework for Broadcom/Cypress WiFi Chips

Nexmon is a C-based firmware patching framework for Broadcom/Cypress WiFi chips that can be used to write custom firmware patches to enable, for example, monitor mode with radotap-headers and frame-injection.

Nexmon Github

Building SDR with Nexmon

CSI Extraction with Nexmon

Nexmon at C't Magazin