Sniffign in Monitor Mode on Windows Throws Exception - libpcap & WLanHelper path issue

[FrequenzForce]

Brief description

On a windows machine, with scapy 2.5.0 and npcap 1.79, when calling sniff like this:

a=sniff(iface="Valid Wifi Interface Name",monitor=True,count=5)

Scapy throws an exception due to a path formulation error for WLanHelper.

Scapy version

2.5

Python version

3.12

Operating system

Windows LATEST

Additional environment information

pip show scapy

Name: scapy
Version: 2.5.0
Summary: Scapy: interactive packet manipulation tool
Home-page: https://scapy.net
Author: Philippe BIONDI
Author-email: guillaume@valadon.net
License: GPL-2.0-only
Location: C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages
Requires:
Required-by:

How to reproduce

• Install scapy 2.5 per docs
• Install npcap 1.79
• Call "sniff" - either interactively or in code - sniff(iface="Valid Wifi Interface Name",monitor=True,count=5)

Actual result

'\WlanHelper.exe' is not recognized as an internal or external command,
operable program or batch file.
Traceback (most recent call last):
File "", line 1, in
File "C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\scapy\sendrecv.py", line 1311, in sniff
sniffer.run(*args, **kwargs)
File "C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\scapy\sendrecv.py", line 1171, in run
sniff_sockets[RL2(iface)(type=ETH_P_ALL, iface=iface,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\scapy\arch\libpcap.py", line 481, in init
fd = open_pcap(
^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\scapy\arch\windows_init.py", line 766, in open_pcap
monitored = iface.ismonitor()
^^^^^^^^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\scapy\arch\windows_init.py", line 413, in ismonitor
res = (self.mode() == "monitor")
^^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\scapy\arch\windows_init.py", line 404, in mode
return self.npcap_get("mode")
^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\user\AppData\Local\Programs\Python\Python312\Lib\site-packages\scapy\arch\windows_init.py", line 396, in _npcap_get
raise OSError(res.decode("utf8", errors="ignore"))
OSError

Expected result

<Sniffed: TCP:0 UDP:0 ICMP:0 Other:5>

Related resources

No response