# Windows executables and DLL's

## dnSpy

dnSpy is a debugger and .NET assembly editor. You can use it to edit and debug assemblies even if you don't have any source code available.

{% embed url="<https://github.com/dnSpy/dnSpy>" %}

<figure><img src="https://3347686964-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fu7zwkkeRzjx9PZGhfY9D%2Fuploads%2FJayH2pq1H4neJCKwlpmV%2Fdebug-animated.gif?alt=media&#x26;token=6411c4e3-6c18-4d72-80cf-1f5461555255" alt=""><figcaption></figcaption></figure>

## Python compiled executable

If a executable was compiled with pyinstaller, we can extract the python compiled code and actually decompile it.

To extract use:

{% embed url="<https://github.com/extremecoders-re/pyinstxtractor>" %}

```
python pyinstxtractor.py <filename>
```

And to decompile use Uncompyle6

* Tip: use a python venv

{% embed url="<https://github.com/rocky/python-uncompyle6/>" %}

```
uncompyle6 *compiled-python-file-pyc-or-pyo*
```