forked from bettercap/bettercap
/
mac_changer.go
125 lines (99 loc) · 2.83 KB
/
mac_changer.go
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package modules
import (
"fmt"
"net"
"runtime"
"strings"
"github.com/bettercap/bettercap/core"
"github.com/bettercap/bettercap/log"
bnet "github.com/bettercap/bettercap/network"
"github.com/bettercap/bettercap/session"
)
type MacChanger struct {
session.SessionModule
iface string
originalMac net.HardwareAddr
fakeMac net.HardwareAddr
}
func NewMacChanger(s *session.Session) *MacChanger {
mc := &MacChanger{
SessionModule: session.NewSessionModule("mac.changer", s),
}
mc.AddParam(session.NewStringParameter("mac.changer.iface",
session.ParamIfaceName,
"",
"Name of the interface to use."))
mc.AddParam(session.NewStringParameter("mac.changer.address",
session.ParamRandomMAC,
"[a-fA-F0-9]{2}:[a-fA-F0-9]{2}:[a-fA-F0-9]{2}:[a-fA-F0-9]{2}:[a-fA-F0-9]{2}:[a-fA-F0-9]{2}",
"Hardware address to apply to the interface."))
mc.AddHandler(session.NewModuleHandler("mac.changer on", "",
"Start mac changer module.",
func(args []string) error {
return mc.Start()
}))
mc.AddHandler(session.NewModuleHandler("mac.changer off", "",
"Stop mac changer module and restore original mac address.",
func(args []string) error {
return mc.Stop()
}))
return mc
}
func (mc *MacChanger) Name() string {
return "mac.changer"
}
func (mc *MacChanger) Description() string {
return "Change active interface mac address."
}
func (mc *MacChanger) Author() string {
return "Simone Margaritelli <evilsocket@protonmail.com>"
}
func (mc *MacChanger) Configure() (err error) {
var changeTo string
if err, mc.iface = mc.StringParam("mac.changer.iface"); err != nil {
return err
}
if err, changeTo = mc.StringParam("mac.changer.address"); err != nil {
return err
}
changeTo = bnet.NormalizeMac(changeTo)
if mc.fakeMac, err = net.ParseMAC(changeTo); err != nil {
return err
}
mc.originalMac = mc.Session.Interface.HW
return nil
}
func (mc *MacChanger) setMac(mac net.HardwareAddr) error {
os := runtime.GOOS
args := []string{}
if strings.Contains(os, "bsd") || os == "darwin" {
args = []string{mc.iface, "ether", mac.String()}
} else if os == "linux" {
args = []string{mc.iface, "hw", "ether", mac.String()}
} else {
return fmt.Errorf("OS %s is not supported by mac.changer module.", os)
}
_, err := core.Exec("ifconfig", args)
if err == nil {
mc.Session.Interface.HW = mac
}
return err
}
func (mc *MacChanger) Start() error {
if err := mc.Configure(); err != nil {
return err
} else if err := mc.setMac(mc.fakeMac); err != nil {
return err
}
return mc.SetRunning(true, func() {
log.Info("Interface mac address set to %s", core.Bold(mc.fakeMac.String()))
})
}
func (mc *MacChanger) Stop() error {
if err := mc.setMac(mc.originalMac); err != nil {
return err
}
return mc.SetRunning(false, func() {
log.Info("Interface mac address restored to %s", core.Bold(mc.originalMac.String()))
})
}