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new: aliases can now be used along with MACs and IP ranges for the arp.spoof.targets variable (ref #204)

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evilsocket 2018-03-26 11:38:22 +02:00
commit 54607993ba
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GPG key ID: 1564D7F30393A456
4 changed files with 75 additions and 42 deletions
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42
modules/arp_spoof.go
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@ -1,10 +1,7 @@
package modules
import (
"fmt"
"net"
"regexp"
"strings"
"sync"
"time"
@ -12,13 +9,8 @@ import (
"github.com/bettercap/bettercap/network"
"github.com/bettercap/bettercap/packets"
"github.com/bettercap/bettercap/session"
"github.com/malfunkt/iprange"
)
// lulz this sounds like a hamburger
var macParser = regexp.MustCompile(`([a-fA-F0-9]{1,2}:[a-fA-F0-9]{1,2}:[a-fA-F0-9]{1,2}:[a-fA-F0-9]{1,2}:[a-fA-F0-9]{1,2}:[a-fA-F0-9]{1,2})`)
type ArpSpoofer struct {
session.SessionModule
addresses []net.IP
@ -140,47 +132,17 @@ func (p *ArpSpoofer) unSpoof() error {
return nil
}
func (p *ArpSpoofer) parseTargets(targets string) (err error) {
// first isolate MACs and parse them
for _, mac := range macParser.FindAllString(targets, -1) {
mac = network.NormalizeMac(mac)
log.Debug("Parsing MAC %s", mac)
hw, err := net.ParseMAC(mac)
if err != nil {
return fmt.Errorf("Error while parsing MAC '%s': %s", mac, err)
}
p.macs = append(p.macs, hw)
targets = strings.Replace(targets, mac, "", -1)
}
targets = strings.Trim(targets, ", ")
log.Debug("Parsing IP range %s", targets)
if len(p.macs) == 0 || targets != "" {
list, err := iprange.ParseList(targets)
if err != nil {
return fmt.Errorf("Error while parsing arp.spoof.targets variable '%s': %s.", targets, err)
}
p.addresses = list.Expand()
}
log.Debug(" addresses=%v", p.addresses)
log.Debug(" macs=%v", p.macs)
return nil
}
func (p *ArpSpoofer) Configure() error {
var err error
var targets string
if err, targets = p.StringParam("arp.spoof.targets"); err != nil {
return err
} else if err = p.parseTargets(targets); err != nil {
} else if p.addresses, p.macs, err = network.ParseTargets(targets, p.Session.Lan.Aliases()); err != nil {
return err
}
log.Debug(" addresses=%v macs=%v", p.addresses, p.macs)
if p.ban == true {
log.Warning("Running in BAN mode, forwarding not enabled!")
p.Session.Firewall.EnableForwarding(false)