mirror of
https://github.com/bettercap/bettercap
synced 2025-07-06 04:52:10 -07:00
117 lines
2.7 KiB
Go
117 lines
2.7 KiB
Go
package modules
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import (
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"fmt"
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"github.com/evilsocket/bettercap-ng/core"
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"github.com/evilsocket/bettercap-ng/log"
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"github.com/google/gopacket"
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"github.com/google/gopacket/layers"
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)
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func tcpParser(ip *layers.IPv4, pkt gopacket.Packet, verbose bool) {
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tcp := pkt.Layer(layers.LayerTypeTCP).(*layers.TCP)
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if sniParser(ip, pkt, tcp) {
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return
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} else if ntlmParser(ip, pkt, tcp) {
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return
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} else if httpParser(ip, pkt, tcp) {
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return
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} else if verbose == true {
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NewSnifferEvent(
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pkt.Metadata().Timestamp,
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"tcp",
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fmt.Sprintf("%s:%s", ip.SrcIP, vPort(tcp.SrcPort)),
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fmt.Sprintf("%s:%s", ip.DstIP, vPort(tcp.DstPort)),
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SniffData{
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"Size": len(ip.Payload),
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},
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"%s %s:%s > %s:%s %s",
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core.W(core.BG_LBLUE+core.FG_BLACK, "tcp"),
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vIP(ip.SrcIP),
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vPort(tcp.SrcPort),
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vIP(ip.DstIP),
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vPort(tcp.DstPort),
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core.Dim(fmt.Sprintf("%d bytes", len(ip.Payload))),
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).Push()
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}
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}
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func udpParser(ip *layers.IPv4, pkt gopacket.Packet, verbose bool) {
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udp := pkt.Layer(layers.LayerTypeUDP).(*layers.UDP)
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if dnsParser(ip, pkt, udp) {
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return
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} else if krb5Parser(ip, pkt, udp) {
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return
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} else if verbose == true {
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NewSnifferEvent(
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pkt.Metadata().Timestamp,
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"udp",
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fmt.Sprintf("%s:%s", ip.SrcIP, vPort(udp.SrcPort)),
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fmt.Sprintf("%s:%s", ip.DstIP, vPort(udp.DstPort)),
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SniffData{
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"Size": len(ip.Payload),
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},
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"%s %s:%s > %s:%s %s",
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core.W(core.BG_DGRAY+core.FG_WHITE, "udp"),
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vIP(ip.SrcIP),
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vPort(udp.SrcPort),
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vIP(ip.DstIP),
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vPort(udp.DstPort),
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core.Dim(fmt.Sprintf("%d bytes", len(ip.Payload))),
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).Push()
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}
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}
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func unkParser(ip *layers.IPv4, pkt gopacket.Packet, verbose bool) {
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if verbose == true {
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NewSnifferEvent(
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pkt.Metadata().Timestamp,
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pkt.TransportLayer().LayerType().String(),
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vIP(ip.SrcIP),
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vIP(ip.DstIP),
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SniffData{
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"Size": len(ip.Payload),
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},
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"%s %s > %s %s",
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core.W(core.BG_DGRAY+core.FG_WHITE, pkt.TransportLayer().LayerType().String()),
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vIP(ip.SrcIP),
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vIP(ip.DstIP),
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core.Dim(fmt.Sprintf("%d bytes", len(ip.Payload))),
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).Push()
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}
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}
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func mainParser(pkt gopacket.Packet, verbose bool) bool {
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nlayer := pkt.NetworkLayer()
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if nlayer == nil {
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log.Debug("Missing network layer skipping packet.")
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return false
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}
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if nlayer.LayerType() != layers.LayerTypeIPv4 {
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log.Debug("Unexpected layer type %s, skipping packet.", nlayer.LayerType())
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return false
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}
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ip := nlayer.(*layers.IPv4)
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tlayer := pkt.TransportLayer()
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if tlayer == nil {
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log.Debug("Missing transport layer skipping packet.")
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return false
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}
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if tlayer.LayerType() == layers.LayerTypeTCP {
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tcpParser(ip, pkt, verbose)
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} else if tlayer.LayerType() == layers.LayerTypeUDP {
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udpParser(ip, pkt, verbose)
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} else {
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unkParser(ip, pkt, verbose)
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}
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return true
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}
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