Refactoring modules

modules/net_sniff/net_sniff_krb5.go

@@ -0,0 +1,43 @@
+package net_sniff
+
+import (
+	"encoding/asn1"
+
+	"github.com/bettercap/bettercap/packets"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+
+	"github.com/evilsocket/islazy/tui"
+)
+
+func krb5Parser(ip *layers.IPv4, pkt gopacket.Packet, udp *layers.UDP) bool {
+	if udp.DstPort != 88 {
+		return false
+	}
+
+	var req packets.Krb5Request
+	_, err := asn1.UnmarshalWithParams(udp.Payload, &req, packets.Krb5AsReqParam)
+	if err != nil {
+		return false
+	}
+
+	if s, err := req.String(); err == nil {
+		NewSnifferEvent(
+			pkt.Metadata().Timestamp,
+			"krb5",
+			ip.SrcIP.String(),
+			ip.DstIP.String(),
+			nil,
+			"%s %s -> %s : %s",
+			tui.Wrap(tui.BACKRED+tui.FOREBLACK, "krb-as-req"),
+			vIP(ip.SrcIP),
+			vIP(ip.DstIP),
+			s,
+		).Push()
+
+		return true
+	}
+
+	return false
+}