Scapy ESPNOW

espnow_passive.py

#sudo setcap cap_net_raw=eip /bin/python3.10
from scapy.all import *
from struct import *

def dissect(srcMac, load):
    categoryCode = unpack('B', load[:1])[0]
    organizationIdentifier = load[1:4]
    randomValues = load[4:8]
    # Vendor Specific
    vsElementId = unpack('B', load[8:9])[0]
    vsLength = unpack('B', load[9:10])[0]
    vsOrganizationIdentifier = load[10:13]
    vsType = unpack('B', load[13:14])[0]
    vsVersion = unpack('B', load[14:15])[0]
    vsBody = load[15:]
    print((srcMac,
           categoryCode,
           organizationIdentifier,
           randomValues,
           vsElementId,
           vsLength,
           vsOrganizationIdentifier,
           vsType,
           vsVersion,
           vsBody
           ))

def espnow(pkt):
    if pkt.haslayer(Dot11):
        if pkt.type == 0 and pkt.subtype == 13:
            if pkt.addr3 == 'ff:ff:ff:ff:ff:ff':
                dissect(pkt.addr2, pkt['Raw'].load)

sniff(iface='wlan0mon', prn=espnow)

https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/network/esp_now.html