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https://github.com/bettercap/bettercap.git
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134 lines
3.2 KiB
Go
134 lines
3.2 KiB
Go
package mac_changer
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import (
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"fmt"
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"net"
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"runtime"
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"strings"
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"github.com/bettercap/bettercap/v2/core"
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"github.com/bettercap/bettercap/v2/network"
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"github.com/bettercap/bettercap/v2/session"
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"github.com/evilsocket/islazy/tui"
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)
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type MacChanger struct {
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session.SessionModule
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iface string
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originalMac net.HardwareAddr
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fakeMac net.HardwareAddr
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}
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func NewMacChanger(s *session.Session) *MacChanger {
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mod := &MacChanger{
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SessionModule: session.NewSessionModule("mac.changer", s),
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}
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mod.AddParam(session.NewStringParameter("mac.changer.iface",
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session.ParamIfaceName,
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"",
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"Name of the interface to use."))
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mod.AddParam(session.NewStringParameter("mac.changer.address",
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session.ParamRandomMAC,
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"[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}",
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"Hardware address to apply to the interface."))
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mod.AddHandler(session.NewModuleHandler("mac.changer on", "",
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"Start mac changer module.",
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func(args []string) error {
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return mod.Start()
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}))
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mod.AddHandler(session.NewModuleHandler("mac.changer off", "",
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"Stop mac changer module and restore original mac address.",
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func(args []string) error {
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return mod.Stop()
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}))
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return mod
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}
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func (mod *MacChanger) Name() string {
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return "mac.changer"
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}
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func (mod *MacChanger) Description() string {
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return "Change active interface mac address."
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}
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func (mod *MacChanger) Author() string {
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return "Simone Margaritelli <evilsocket@gmail.com>"
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}
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func (mod *MacChanger) Configure() (err error) {
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var changeTo string
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if err, mod.iface = mod.StringParam("mac.changer.iface"); err != nil {
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return err
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} else if err, changeTo = mod.StringParam("mac.changer.address"); err != nil {
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return err
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}
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changeTo = network.NormalizeMac(changeTo)
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if mod.fakeMac, err = net.ParseMAC(changeTo); err != nil {
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return err
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}
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mod.originalMac = mod.Session.Interface.HW
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return nil
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}
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func (mod *MacChanger) setMac(mac net.HardwareAddr) error {
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core.Exec("ifconfig", []string{mod.iface, "down"})
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defer func() {
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core.Exec("ifconfig", []string{mod.iface, "up"})
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}()
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var args []string
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os := runtime.GOOS
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if strings.Contains(os, "bsd") || os == "darwin" {
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args = []string{mod.iface, "ether", mac.String()}
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} else if os == "linux" || os == "android" {
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args = []string{mod.iface, "hw", "ether", mac.String()}
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} else {
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return fmt.Errorf("%s is not supported by this module", os)
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}
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out, err := core.Exec("ifconfig", args)
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if err == nil {
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mod.Session.Interface.HW = mac
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} else {
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mod.Warning("%v: %s", err, out)
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}
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return err
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}
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func (mod *MacChanger) Start() error {
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if mod.Running() {
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return session.ErrAlreadyStarted(mod.Name())
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} else if err := mod.Configure(); err != nil {
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return err
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} else if err := mod.setMac(mod.fakeMac); err != nil {
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return err
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}
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return mod.SetRunning(true, func() {
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mod.Info("interface mac address set to %s", tui.Bold(mod.fakeMac.String()))
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})
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}
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func (mod *MacChanger) Stop() error {
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return mod.SetRunning(false, func() {
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if err := mod.setMac(mod.originalMac); err == nil {
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mod.Info("interface mac address restored to %s", tui.Bold(mod.originalMac.String()))
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} else {
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mod.Error("error while restoring mac address: %s", err)
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}
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})
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}
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