Awesome work on the ESP8266 deauther. But I wonder is it possible to capture the 4 way handshake of WPA authentication? Not sure where would it be saved though. May be on the browser at runtime?
Read the readme!
Can it sniff handshakes?
The ESP8266 has a promiscuous mode in which you can sniff packets, but handshake packets are dropped and there is no other way to get them with the functions provided by the SDK.
Maybe someone will find a way around this barrier but I wasn't able to.
It is possible but you can't see full conversation. You can't sniff all 4 packets
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Read the readme!