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package cmd
import (
"encoding/json"
"fmt"
"github.com/FalconOpsLLC/goexec/internal/exec"
wmiexec "github.com/FalconOpsLLC/goexec/internal/exec/wmi"
"github.com/spf13/cobra"
"regexp"
"strings"
)
func wmiCmdInit() {
wmiCustomCmdInit()
wmiCmd.AddCommand(wmiCustomCmd)
wmiProcessCmdInit()
wmiCmd.AddCommand(wmiProcessCmd)
}
func wmiCustomCmdInit() {
wmiCustomCmd.Flags().StringVarP(&wmiArgMethod, "method", "m", "", `WMI Method to use in the format CLASS.METHOD (i.e. "Win32_Process.Create")`)
wmiCustomCmd.Flags().StringVarP(&wmiArgMethodArgs, "args", "A", "{}", `WMI Method argument(s) in JSON dictionary format (i.e. {"CommandLine":"calc.exe"})`)
if err := wmiCustomCmd.MarkFlagRequired("method"); err != nil {
panic(err)
}
}
func wmiProcessCmdInit() {
wmiProcessCmd.Flags().StringVarP(&command, "command", "c", "", "Process command line")
wmiProcessCmd.Flags().StringVarP(&workingDirectory, "directory", "d", `C:\`, "Working directory")
if err := wmiProcessCmd.MarkFlagRequired("command"); err != nil {
panic(err)
}
}
var (
// for custom method
wmiArgMethod string
wmiArgMethodArgs string
wmiClass string
wmiMethod string
wmiMethodArgsMap map[string]any
methodRegex = regexp.MustCompile(`^\w+\.\w+$`)
wmiCmd = &cobra.Command{
Use: "wmi",
Short: "Establish execution via WMI",
Args: cobra.NoArgs,
}
wmiCustomCmd = &cobra.Command{
Use: "custom",
Short: "Execute specified WMI method",
Long: `Description:
The custom method creates an instance of the specified WMI class (-c),
then calls the provided method (-m) with the provided arguments (-A).
References:
https://learn.microsoft.com/en-us/windows/win32/wmisdk/wmi-classes
`,
Args: func(cmd *cobra.Command, args []string) (err error) {
if err = needsTarget("cifs")(cmd, args); err == nil {
if wmiArgMethod != "" && !methodRegex.MatchString(wmiArgMethod) {
return fmt.Errorf("invalid CLASS.METHOD syntax: %s", wmiArgMethod)
}
if err = json.Unmarshal([]byte(wmiArgMethodArgs), &wmiMethodArgsMap); err != nil {
err = fmt.Errorf("failed to parse JSON arguments: %w", err)
}
}
return
},
Run: func(cmd *cobra.Command, args []string) {
module := wmiexec.Module{}
connCfg := &exec.ConnectionConfig{}
cleanCfg := &exec.CleanupConfig{}
parts := strings.SplitN(wmiArgMethod, ".", 2)
wmiClass = parts[0]
wmiMethod = parts[1]
execCfg := &exec.ExecutionConfig{
ExecutableName: executable,
ExecutableArgs: executableArgs,
ExecutionMethod: wmiexec.MethodCustom,
ExecutionMethodConfig: wmiexec.MethodCustomConfig{
Class: wmiClass,
Method: wmiMethod,
Arguments: wmiMethodArgsMap,
},
}
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")
} else if err := module.Cleanup(log.WithContext(ctx), cleanCfg); err != nil {
log.Error().Err(err).Msg("Cleanup failed")
}
},
}
wmiProcessCmd = &cobra.Command{
Use: "proc",
Short: "Start a Windows process",
Long: `Description:
The proc method creates an instance of the Win32_Process WMI class, then
calls the Win32_Process.Create method with the provided command (-c),
and optional working directory (-d).
References:
https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/create-method-in-class-win32-process
`,
Args: needsTarget("cifs"),
Run: func(cmd *cobra.Command, args []string) {
log = log.With().Str("module", "wmi").Logger()
module := wmiexec.Module{}
connCfg := &exec.ConnectionConfig{}
cleanCfg := &exec.CleanupConfig{}
execCfg := &exec.ExecutionConfig{
ExecutableName: executable,
ExecutableArgs: executableArgs,
ExecutionMethod: wmiexec.MethodProcess,
ExecutionMethodConfig: wmiexec.MethodProcessConfig{
Command: command,
WorkingDirectory: workingDirectory,
},
}
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")
} else if err := module.Cleanup(log.WithContext(ctx), cleanCfg); err != nil {
log.Error().Err(err).Msg("Cleanup failed")
}
},
}
)
|