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package cmd
import (
"fmt"
"github.com/FalconOpsLLC/goexec/internal/client/dce"
"github.com/FalconOpsLLC/goexec/internal/exec"
"github.com/FalconOpsLLC/goexec/internal/exec/tsch"
"github.com/spf13/cobra"
"regexp"
"time"
)
func tschCmdInit() {
registerRpcFlags(tschCmd)
tschDeleteCmdInit()
tschCmd.AddCommand(tschDeleteCmd)
tschRegisterCmdInit()
tschCmd.AddCommand(tschRegisterCmd)
tschDemandCmdInit()
tschCmd.AddCommand(tschDemandCmd)
}
func tschDeleteCmdInit() {
tschDeleteCmd.Flags().StringVarP(&tschTaskPath, "path", "t", "", "Scheduled task path")
if err := tschDeleteCmd.MarkFlagRequired("path"); err != nil {
panic(err)
}
}
func tschDemandCmdInit() {
tschDemandCmd.Flags().StringVarP(&executable, "executable", "e", "", "Remote Windows executable to invoke")
tschDemandCmd.Flags().StringVarP(&executableArgs, "args", "a", "", "Arguments to pass to executable")
tschDemandCmd.Flags().StringVarP(&tschTaskName, "name", "n", "", "Target task name")
tschDemandCmd.Flags().BoolVar(&tschNoDelete, "no-delete", false, "Don't delete task after execution")
if err := tschDemandCmd.MarkFlagRequired("executable"); err != nil {
panic(err)
}
}
func tschRegisterCmdInit() {
tschRegisterCmd.Flags().StringVarP(&executable, "executable", "e", "", "Remote Windows executable to invoke")
tschRegisterCmd.Flags().StringVarP(&executableArgs, "args", "a", "", "Arguments to pass to executable")
tschRegisterCmd.Flags().StringVarP(&tschTaskName, "name", "n", "", "Target task name")
tschRegisterCmd.Flags().DurationVar(&tschStopDelay, "delay-stop", time.Duration(5*time.Second), "Delay between task execution and termination. This will not stop the process spawned by the task")
tschRegisterCmd.Flags().DurationVarP(&tschDelay, "delay-start", "d", time.Duration(5*time.Second), "Delay between task registration and execution")
tschRegisterCmd.Flags().DurationVarP(&tschDeleteDelay, "delay-delete", "D", time.Duration(0*time.Second), "Delay between task termination and deletion")
tschRegisterCmd.Flags().BoolVar(&tschNoDelete, "no-delete", false, "Don't delete task after execution")
tschRegisterCmd.Flags().BoolVar(&tschCallDelete, "call-delete", false, "Directly call SchRpcDelete to delete task")
tschRegisterCmd.MarkFlagsMutuallyExclusive("no-delete", "delay-delete")
tschRegisterCmd.MarkFlagsMutuallyExclusive("no-delete", "call-delete")
tschRegisterCmd.MarkFlagsMutuallyExclusive("delay-delete", "call-delete")
if err := tschRegisterCmd.MarkFlagRequired("executable"); err != nil {
panic(err)
}
}
func tschArgs(principal string) func(cmd *cobra.Command, args []string) error {
return func(cmd *cobra.Command, args []string) error {
if tschTaskPath != "" && !tschTaskPathRegex.MatchString(tschTaskPath) {
return fmt.Errorf("invalid task path: %s", tschTaskPath)
}
if tschTaskName != "" {
if !tschTaskNameRegex.MatchString(tschTaskName) {
return fmt.Errorf("invalid task name: %s", tschTaskName)
} else if tschTaskPath == "" {
tschTaskPath = `\` + tschTaskName
}
}
return needsRpcTarget(principal)(cmd, args)
}
}
var (
tschNoDelete bool
tschCallDelete bool
tschDeleteDelay time.Duration
tschStopDelay time.Duration
tschDelay time.Duration
tschTaskName string
tschTaskPath string
tschTaskPathRegex = regexp.MustCompile(`^\\[^ :/\\][^:/]*$`)
tschTaskNameRegex = regexp.MustCompile(`^[^ :/\\][^:/\\]*$`)
tschCmd = &cobra.Command{
Use: "tsch",
Short: "Establish execution via TSCH (ITaskSchedulerService)",
Args: cobra.NoArgs,
}
tschRegisterCmd = &cobra.Command{
Use: "register [target]",
Short: "Register a remote scheduled task with an automatic start time",
Long: `Description:
The register method calls SchRpcRegisterTask to register a scheduled task
with an automatic start time.This method avoids directly calling SchRpcRun,
and can even avoid calling SchRpcDelete by populating the DeleteExpiredTaskAfter
Setting.
References:
SchRpcRegisterTask - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/849c131a-64e4-46ef-b015-9d4c599c5167
SchRpcRun - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/77f2250d-500a-40ee-be18-c82f7079c4f0
SchRpcDelete - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/360bb9b1-dd2a-4b36-83ee-21f12cb97cff
DeleteExpiredTaskAfter - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/6bfde6fe-440e-4ddd-b4d6-c8fc0bc06fae
`,
Args: tschArgs("cifs"),
Run: func(cmd *cobra.Command, args []string) {
log = log.With().
Str("module", "tsch").
Str("method", "register").
Logger()
if tschNoDelete {
log.Warn().Msg("Task will not be deleted after execution")
}
module := tschexec.Module{}
connCfg := &exec.ConnectionConfig{
ConnectionMethod: exec.ConnectionMethodDCE,
ConnectionMethodConfig: dce.ConnectionMethodDCEConfig{
Endpoint: dceStringBinding,
Options: dceOptions,
EpmAuto: argDceEpmAuto,
},
}
execCfg := &exec.ExecutionConfig{
ExecutableName: executable,
ExecutableArgs: executableArgs,
ExecutionMethod: tschexec.MethodRegister,
ExecutionMethodConfig: tschexec.MethodRegisterConfig{
NoDelete: tschNoDelete,
CallDelete: tschCallDelete,
StartDelay: tschDelay,
StopDelay: tschStopDelay,
DeleteDelay: tschDeleteDelay,
TaskPath: tschTaskPath,
},
}
if err := module.Connect(log.WithContext(ctx), creds, target, connCfg); err != nil {
log.Fatal().Err(err).Msg("Connection failed")
} else if err = module.Exec(log.WithContext(ctx), execCfg); err != nil {
log.Fatal().Err(err).Msg("Execution failed")
}
},
}
tschDemandCmd = &cobra.Command{
Use: "demand [target]",
Short: "Register a remote scheduled task and demand immediate start",
Long: `Description:
Similar to the register method, the demand method will call SchRpcRegisterTask,
But rather than setting a defined time when the task will start, it will
additionally call SchRpcRun to forcefully start the task.
References:
SchRpcRegisterTask - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/849c131a-64e4-46ef-b015-9d4c599c5167
SchRpcRun - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/77f2250d-500a-40ee-be18-c82f7079c4f0
`,
Args: tschArgs("cifs"),
Run: func(cmd *cobra.Command, args []string) {
log = log.With().
Str("module", "tsch").
Str("method", "register").
Logger()
if tschNoDelete {
log.Warn().Msg("Task will not be deleted after execution")
}
module := tschexec.Module{}
connCfg := &exec.ConnectionConfig{
ConnectionMethod: exec.ConnectionMethodDCE,
ConnectionMethodConfig: dce.ConnectionMethodDCEConfig{
Endpoint: dceStringBinding,
Options: dceOptions,
EpmAuto: argDceEpmAuto,
},
}
execCfg := &exec.ExecutionConfig{
ExecutableName: executable,
ExecutableArgs: executableArgs,
ExecutionMethod: tschexec.MethodDemand,
ExecutionMethodConfig: tschexec.MethodDemandConfig{
NoDelete: tschNoDelete,
TaskPath: tschTaskPath,
},
}
if err := module.Connect(log.WithContext(ctx), creds, target, connCfg); err != nil {
log.Fatal().Err(err).Msg("Connection failed")
} else if err = module.Exec(log.WithContext(ctx), execCfg); err != nil {
log.Fatal().Err(err).Msg("Execution failed")
}
},
}
tschDeleteCmd = &cobra.Command{
Use: "delete [target]",
Short: "Manually delete a scheduled task",
Long: `Description:
The delete method manually deletes a scheduled task by calling SchRpcDelete
References:
SchRpcDelete - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/360bb9b1-dd2a-4b36-83ee-21f12cb97cff
`,
Args: tschArgs("cifs"),
Run: func(cmd *cobra.Command, args []string) {
log = log.With().
Str("module", "tsch").
Str("method", "delete").
Logger()
module := tschexec.Module{}
connCfg := &exec.ConnectionConfig{
ConnectionMethod: exec.ConnectionMethodDCE,
ConnectionMethodConfig: dce.ConnectionMethodDCEConfig{
Endpoint: dceStringBinding,
Options: dceOptions,
EpmAuto: argDceEpmAuto,
},
}
cleanCfg := &exec.CleanupConfig{
CleanupMethod: tschexec.MethodDelete,
CleanupMethodConfig: tschexec.MethodDeleteConfig{TaskPath: tschTaskPath},
}
if err := module.Connect(log.WithContext(ctx), creds, target, connCfg); err != nil {
log.Fatal().Err(err).Msg("Connection failed")
} else if err := module.Cleanup(log.WithContext(ctx), cleanCfg); err != nil {
log.Fatal().Err(err).Msg("Cleanup failed")
}
},
}
)
|