mirror of
https://github.com/bettercap/bettercap
synced 2025-07-06 04:52:10 -07:00
49 lines
963 B
Go
49 lines
963 B
Go
package modules
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/evilsocket/bettercap-ng/core"
|
|
"regexp"
|
|
|
|
"github.com/google/gopacket"
|
|
"github.com/google/gopacket/layers"
|
|
)
|
|
|
|
// poor man's TLS Client Hello with SNI extension parser :P
|
|
var sniRe = regexp.MustCompile("\x00\x00.{4}\x00.{2}([a-z0-9]+([\\-\\.]{1}[a-z0-9]+)*\\.[a-z]{2,6})\x00")
|
|
|
|
func sniParser(ip *layers.IPv4, pkt gopacket.Packet, tcp *layers.TCP) bool {
|
|
data := tcp.Payload
|
|
dataSize := len(data)
|
|
|
|
if dataSize < 2 || data[0] != 0x16 || data[1] != 0x03 {
|
|
return false
|
|
}
|
|
|
|
m := sniRe.FindSubmatch(data)
|
|
if len(m) < 2 {
|
|
return false
|
|
}
|
|
|
|
domain := string(m[1])
|
|
if tcp.DstPort != 443 {
|
|
domain = fmt.Sprintf("%s:%d", domain, tcp.DstPort)
|
|
}
|
|
|
|
NewSnifferEvent(
|
|
pkt.Metadata().Timestamp,
|
|
"https",
|
|
ip.SrcIP.String(),
|
|
domain,
|
|
SniffData{
|
|
"Domain": domain,
|
|
},
|
|
"%s %s > %s",
|
|
core.W(core.BG_YELLOW+core.FG_WHITE, "sni"),
|
|
vIP(ip.SrcIP),
|
|
core.Yellow("https://"+domain),
|
|
).Push()
|
|
|
|
return true
|
|
}
|