1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
package cmd
import (
"context"
"fmt"
"github.com/FalconOpsLLC/goexec/internal/util"
"github.com/FalconOpsLLC/goexec/pkg/goexec"
tschexec "github.com/FalconOpsLLC/goexec/pkg/goexec/tsch"
"github.com/oiweiwei/go-msrpc/ssp/gssapi"
"github.com/spf13/cobra"
"time"
)
func tschCmdInit() {
registerRpcFlags(tschCmd)
tschDemandCmdInit()
tschCmd.AddCommand(tschDemandCmd)
tschCreateCmdInit()
tschCmd.AddCommand(tschCreateCmd)
}
func tschDemandCmdInit() {
tschDemandCmd.Flags().StringVarP(&tschTask, "task", "t", "", "Name or path of the new task")
tschDemandCmd.Flags().Uint32Var(&tschDemand.SessionId, "session", 0, "Hijack existing session given the session ID")
tschDemandCmd.Flags().BoolVar(&tschDemand.NoDelete, "no-delete", false, "Don't delete task after execution")
tschDemandCmd.Flags().StringVar(&tschDemand.UserSid, "sid", "S-1-5-18", "User SID to impersonate")
registerProcessExecutionArgs(tschDemandCmd)
registerExecutionOutputArgs(tschDemandCmd)
}
func tschCreateCmdInit() {
tschCreateCmd.Flags().StringVarP(&tschTask, "task", "t", "", "Name or path of the new task")
tschCreateCmd.Flags().DurationVar(&tschCreate.StopDelay, "delay-stop", 5*time.Second, "Delay between task execution and termination. This won't stop the spawned process")
tschCreateCmd.Flags().DurationVar(&tschCreate.StartDelay, "start-delay", 5*time.Second, "Delay between task registration and execution")
tschCreateCmd.Flags().DurationVar(&tschCreate.DeleteDelay, "delete-delay", 0*time.Second, "Delay between task termination and deletion")
tschCreateCmd.Flags().BoolVar(&tschCreate.NoDelete, "no-delete", false, "Don't delete task after execution")
tschCreateCmd.Flags().BoolVar(&tschCreate.CallDelete, "call-delete", false, "Directly call SchRpcDelete to delete task")
tschCreateCmd.Flags().StringVar(&tschCreate.UserSid, "sid", "S-1-5-18", "User SID to impersonate")
registerProcessExecutionArgs(tschCreateCmd)
registerExecutionOutputArgs(tschCreateCmd)
}
func argsTask(*cobra.Command, []string) error {
switch {
case tschTask == "":
tschTask = `\` + util.RandomString()
case tschexec.ValidateTaskPath(tschTask) == nil:
return nil
case tschexec.ValidateTaskName(tschTask) == nil:
tschTask = `\` + tschTask
}
return fmt.Errorf("invalid task name or path: %q", tschTask)
}
var (
tschDemand tschexec.TschDemand
tschCreate tschexec.TschCreate
tschTask string
tschCmd = &cobra.Command{
Use: "tsch",
Short: "Execute with Windows Task Scheduler (MS-TSCH)",
GroupID: "module",
Args: cobra.NoArgs,
}
tschDemandCmd = &cobra.Command{
Use: "demand [target]",
Short: "Register a remote scheduled task and demand immediate start",
Long: `Description:
Similar to the create 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:
- https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/849c131a-64e4-46ef-b015-9d4c599c5167
- https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-tsch/77f2250d-500a-40ee-be18-c82f7079c4f0
`,
Args: args(
argsRpcClient("cifs"),
argsOutput("smb"),
argsTask,
),
Run: func(*cobra.Command, []string) {
tschDemand.IO = exec
tschDemand.Client = &rpcClient
tschDemand.TaskPath = tschTask
ctx := log.With().
Str("module", "tsch").
Str("method", "demand").
Logger().WithContext(gssapi.NewSecurityContext(context.TODO()))
if err := goexec.ExecuteCleanMethod(ctx, &tschDemand, &exec); err != nil {
log.Fatal().Err(err).Msg("Operation failed")
}
},
}
tschCreateCmd = &cobra.Command{
Use: "create [target]",
Short: "Create a remote scheduled task with an automatic start time",
Long: `Description:
The create 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: args(
argsRpcClient("cifs"),
argsOutput("smb"),
argsTask,
),
Run: func(*cobra.Command, []string) {
tschCreate.Tsch.Client = &rpcClient
tschCreate.IO = exec
tschCreate.TaskPath = tschTask
ctx := log.With().
Str("module", "tsch").
Str("method", "create").
Logger().WithContext(gssapi.NewSecurityContext(context.TODO()))
if err := goexec.ExecuteCleanMethod(ctx, &tschCreate, &exec); err != nil {
log.Fatal().Err(err).Msg("Operation failed")
}
},
}
)
|