Prerequisites

First install some dependencies:

# Kali Linux and Ubuntu:
sudo apt-get update
sudo apt-get install libnl-3-dev libnl-genl-3-dev libnl-route-3-dev libssl-dev \
	libdbus-1-dev git pkg-config build-essential macchanger net-tools python3-venv \
	aircrack-ng rfkill

Compiling the AP and Client

First compile hostapd:

cd hostapd
cp defconfig .config
make -j 2
cd ..

Now compile wpa_supplicant:

cd wpa_supplicant
cp defconfig .config
make -j 2
cd ..

Example WPA3 configurations

Access Point

See hostapd/hostapd_wpa3.conf:

interface=wlan0
ssid=WPA3-Network

hw_mode=g
channel=1

wpa=2
wpa_passphrase=abcdefgh
wpa_key_mgmt=SAE
rsn_pairwise=CCMP
ieee80211w=2

Client

See wpa_supplicant/supp_wpa3.conf:

network={
	ssid="WPA3-Network"
	psk="abcdefgh"
	key_mgmt=SAE
	ieee80211w=2
}

Configuring SAE-PK

First generate a private key:

openssl ecparam -name prime256v1 -genkey -noout -out example_key.der -outform der

Now derive the password from it:

cd hostapd
make sae_pk_gen
./sae_pk_gen example_key.der 3 SAEPK-Network

Example output:

...
sae_password=2udb-slxf-3ij2|pk=04e8aad54d1a121955e8703d1dfa115e:MHcCAQEEIKMP3SZEAlW9rSwTFsaR/sEyX963opsOo2QYe4G8Kcl+oAoGCCqGSM49AwEHoUQDQgAE4GuxyTkKNt0MEispu/XPxImInj+tl2ri/Jfu2mOQKb1TdNHSPs6UP+rxv5OWnezhOpjpD63Y+zjjz1yk7/iF7g==
# Longer passwords can be used for improved security at the cost of usability:
# 2udb-slxf-3ijn-y65k
# 2udb-slxf-3ijn-y65x-vr2e
# 2udb-slxf-3ijn-y65x-vr2i-6qob
...

The example config files hostapd_sae_pk.conf and supp_saepk.conf can be used to create the SAE-PK network.

Testing Using Virtual Interface

1. Create Virtual Wi-Fi Interface

First create the virtual interfaces

sudo modprobe mac80211_hwsim radios=3

2. Disable Wi-Fi in the Network Manager

Disable Wi-Fi in the network manager so your operating system won't interfere with our Wi-Fi tests.

Alternatively, you can blacklist the MAC address of your Wi-Fi dongle so that Linux will automatically ignore the Wi-Fi dongle. This is done by adding the following lines to the file /etc/NetworkManager/NetworkManager.conf:

[keyfile]
unmanaged-devices=mac:02:00:00:00:00:00

Replace 02:00:00:00:00:00 with the MAC addess of your (virtual) Wi-Fi dongle and then reboot Kali.

3. Start the client and AP

# Manually enable Wi-Fi for our client and AP
sudo rfkill unblock wifi

# Optionally kill other Wi-Fi clients the brute-force way:
#sudo pkill wpa_supplicant

# Open a new terminal, and in the directory hostapd execute:
sudo ./hostapd hostapd_wpa3.conf -dd -K

# Open another terminal, and in the directory wpa_supplicant execute:
sudo ./wpa_supplicant -D nl80211 -i wlan1 -c supp_wpa3.conf -dd -K

To monitor traffic you can execute sudo ifconfig hwsim0 up and view traffic in wireshark.

It may be usefull to disable MAC address randomization when performing tests (or use macchanger to set a custom fixed MAC address).

vanhoefm/hostap-wpa3