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package cmd
import (
"github.com/FalconOpsLLC/goexec/internal/exec"
"github.com/FalconOpsLLC/goexec/internal/util"
"github.com/FalconOpsLLC/goexec/internal/windows"
"github.com/RedTeamPentesting/adauth"
"github.com/oiweiwei/go-msrpc/dcerpc"
"github.com/spf13/cobra"
scmrexec "github.com/FalconOpsLLC/goexec/internal/exec/scmr"
)
func scmrCmdInit() {
registerRpcFlags(scmrCmd)
scmrCreateCmdInit()
scmrCmd.AddCommand(scmrCreateCmd)
scmrChangeCmdInit()
scmrCmd.AddCommand(scmrChangeCmd)
scmrDeleteCmdInit()
scmrCmd.AddCommand(scmrDeleteCmd)
}
func scmrCreateCmdInit() {
scmrCreateCmd.Flags().StringVarP(&scmrDisplayName, "display-name", "n", "", "Display name of service to create")
scmrCreateCmd.Flags().StringVarP(&scmrServiceName, "service-name", "s", "", "Name of service to create")
scmrCreateCmd.Flags().BoolVar(&scmrNoDelete, "no-delete", false, "Don't delete service after execution")
scmrCreateCmd.Flags().BoolVar(&scmrNoStart, "no-start", false, "Don't start service")
scmrCreateCmd.Flags().StringVarP(&executablePath, "executable-path", "f", "", "Full path to a remote Windows executable file")
scmrCreateCmd.Flags().StringVarP(&executableArgs, "args", "a", "", "Arguments to pass to the executable")
if err := scmrCreateCmd.MarkFlagRequired("executable-path"); err != nil {
panic(err)
}
}
func scmrChangeCmdInit() {
scmrChangeCmd.Flags().StringVarP(&scmrDisplayName, "display-name", "n", "", "Display name of service to create")
scmrChangeCmd.Flags().BoolVar(&scmrNoStart, "no-start", false, "Don't start service")
scmrChangeCmd.Flags().StringVarP(&scmrServiceName, "service-name", "s", "", "Name of service to modify")
scmrChangeCmd.Flags().StringVarP(&executablePath, "executable-path", "f", "", "Full path to remote Windows executable")
scmrChangeCmd.Flags().StringVarP(&executableArgs, "args", "a", "", "Arguments to pass to executable")
if err := scmrChangeCmd.MarkFlagRequired("service-name"); err != nil {
panic(err)
}
}
func scmrDeleteCmdInit() {
scmrDeleteCmd.Flags().StringArrayVarP(&scmrServiceNames, "service-name", "s", scmrServiceNames, "Name of service(s) to delete")
if err := scmrDeleteCmd.MarkFlagRequired("service-name"); err != nil {
panic(err)
}
}
var (
// scmr arguments
scmrServiceName string
scmrServiceNames []string
scmrDisplayName string
scmrNoDelete bool
scmrNoStart bool
creds *adauth.Credential
target *adauth.Target
scmrCmd = &cobra.Command{
Use: "scmr",
Short: "Establish execution via SCMR",
Args: cobra.NoArgs,
}
scmrCreateCmd = &cobra.Command{
Use: "create [target]",
Short: "Create & run a new Windows service to gain execution",
Long: `Description:
The create method calls RCreateServiceW to create a new Windows service with
the provided executable & arguments as the lpBinaryPathName
References:
https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-scmr/6a8ca926-9477-4dd4-b766-692fab07227e
`,
Args: needsRpcTarget("cifs"),
Run: func(cmd *cobra.Command, args []string) {
if scmrServiceName == "" {
log.Warn().Msg("No service name was specified, using random string")
scmrServiceName = util.RandomString()
}
if scmrNoDelete {
log.Warn().Msg("Service will not be deleted after execution")
}
if scmrDisplayName == "" {
log.Debug().Msg("No display name specified, using service name as display name")
scmrDisplayName = scmrServiceName
}
executor := scmrexec.Module{}
cleanCfg := &exec.CleanupConfig{
CleanupMethod: scmrexec.CleanupMethodDelete,
CleanupMethodConfig: scmrexec.CleanupMethodDeleteConfig{},
}
connCfg := &exec.ConnectionConfig{
ConnectionMethod: exec.ConnectionMethodDCE,
ConnectionMethodConfig: dceConfig,
}
execCfg := &exec.ExecutionConfig{
ExecutablePath: executablePath,
ExecutableArgs: executableArgs,
ExecutionMethod: scmrexec.MethodCreate,
ExecutionMethodConfig: scmrexec.MethodCreateConfig{
NoDelete: scmrNoDelete,
ServiceName: util.RandomStringIfBlank(scmrServiceName),
DisplayName: scmrDisplayName,
ServiceType: windows.SERVICE_WIN32_OWN_PROCESS,
StartType: windows.SERVICE_DEMAND_START,
},
}
ctx = log.With().
Str("module", "scmr").
Str("method", "create").
Logger().WithContext(ctx)
if err := executor.Connect(ctx, creds, target, connCfg); err != nil {
log.Fatal().Err(err).Msg("Connection failed")
}
if !scmrNoDelete {
defer func() {
if err := executor.Cleanup(ctx, cleanCfg); err != nil {
log.Error().Err(err).Msg("Cleanup failed")
}
}()
}
if err := executor.Exec(ctx, execCfg); err != nil {
log.Error().Err(err).Msg("Execution failed")
}
},
}
scmrChangeCmd = &cobra.Command{
Use: "change [target]",
Short: "Change an existing Windows service to gain execution",
Args: needsRpcTarget("cifs"),
Run: func(cmd *cobra.Command, args []string) {
executor := scmrexec.Module{}
cleanCfg := &exec.CleanupConfig{
CleanupMethod: scmrexec.CleanupMethodRevert,
CleanupMethodConfig: scmrexec.CleanupMethodRevertConfig{},
}
connCfg := &exec.ConnectionConfig{
ConnectionMethod: exec.ConnectionMethodDCE,
ConnectionMethodConfig: dceConfig,
}
execCfg := &exec.ExecutionConfig{
ExecutablePath: executablePath,
ExecutableArgs: executableArgs,
ExecutionMethod: scmrexec.MethodChange,
ExecutionMethodConfig: scmrexec.MethodChangeConfig{
NoStart: scmrNoStart,
ServiceName: scmrServiceName,
},
}
ctx = log.With().
Str("module", "scmr").
Str("method", "change").
Logger().WithContext(ctx)
if err := executor.Connect(ctx, creds, target, connCfg); err != nil {
log.Fatal().Err(err).Msg("Connection failed")
}
if !scmrNoDelete {
defer func() {
if err := executor.Cleanup(ctx, cleanCfg); err != nil {
log.Error().Err(err).Msg("Cleanup failed")
}
}()
}
if err := executor.Exec(ctx, execCfg); err != nil {
log.Error().Err(err).Msg("Execution failed")
}
},
}
scmrDeleteCmd = &cobra.Command{
Use: "delete [target]",
Short: "Delete an existing Windows service",
Long: `Description:
TODO
`,
Args: needsRpcTarget("cifs"),
Run: func(cmd *cobra.Command, args []string) {
dceConfig.DceOptions = append(dceConfig.DceOptions, dcerpc.WithInsecure())
executor := scmrexec.Module{}
cleanCfg := &exec.CleanupConfig{
CleanupMethod: scmrexec.CleanupMethodDelete,
CleanupMethodConfig: scmrexec.CleanupMethodDeleteConfig{ServiceNames: scmrServiceNames},
}
connCfg := &exec.ConnectionConfig{
ConnectionMethod: exec.ConnectionMethodDCE,
ConnectionMethodConfig: dceConfig,
}
ctx = log.With().
Str("module", "scmr").
Str("method", "delete").
Logger().WithContext(ctx)
if err := executor.Connect(ctx, creds, target, connCfg); err != nil {
log.Fatal().Err(err).Msg("Connection failed")
} else if err = executor.Cleanup(ctx, cleanCfg); err != nil {
log.Fatal().Err(err).Msg("Delete failed")
}
},
}
)
|