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auto-t: Rework spoofing code

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Use scapy library which allows one to easily construct and fudge various
network packets.  This makes constructing spoofed packets much easier
and more readable compared to hex-encoded, hand-crafted frames.
This commit is contained in:
Denis Kenzior 2022-05-11 17:18:38 -05:00
parent 2019823443
commit e44ccf3daa
1 changed files with 51 additions and 18 deletions
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69
autotests/util/hwsim.py
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@ -6,6 +6,8 @@ import collections
from weakref import WeakValueDictionary
from abc import ABCMeta, abstractmethod
from enum import Enum
from scapy.all import *
from scapy.contrib.wpa_eapol import WPA_key
import iwd
from config import ctx
@ -396,28 +398,59 @@ class Hwsim(iwd.AsyncOpAbstract):
def object_manager(self):
return self._object_manager_if
@staticmethod
def _convert_address(address):
first = int(address[0:2], base=16)
first |= 0x40
first = format(first, 'x')
address = first + address[2:]
return address
def spoof_disassociate(self, radio, freq, station):
'''
Send a spoofed disassociate frame to a station
'''
dest = radio.addresses[0].replace(':', '')
frame = Dot11()/Dot11Disas(reason=7)
frame[Dot11].addr1 = station
frame[Dot11].addr2 = radio.addresses[0]
frame[Dot11].addr3 = radio.addresses[0]
frame = 'a0 00 3a 01'
frame += station.replace(':', '')
frame += dest
frame += dest
frame += '30 01 07 00'
self.spoof_frame(radio, freq, station, frame)
self.spoof_frame(radio, freq, station, raw(frame))
def spoof_deauthenticate(self, radio, freq, station):
'''
Send a spoofed deauthenticate frame to a station
'''
frame = Dot11()/Dot11Deauth(reason=6)
frame[Dot11].addr1 = station
frame[Dot11].addr2 = radio.addresses[0]
frame[Dot11].addr3 = radio.addresses[0]
self.spoof_frame(radio, freq, station, raw(frame))
def spoof_eap_fail(self, radio, freq, station):
'''
Send a spoofed EAP-Failure frame to a station
'''
frame = Dot11(type="Data", subtype=0)
frame[Dot11].addr1 = station
frame[Dot11].addr2 = radio.addresses[0]
frame[Dot11].addr3 = radio.addresses[0]
frame /= LLC()/SNAP()/EAPOL( version="802.1X-2001" )
frame /= EAP( code="Failure" )
self.spoof_frame(radio, freq, station, raw(frame))
def spoof_invalid_ptk_1_of_4(self, radio, freq, station):
'''
Send a spoofed PTK 1/4 frame to a station
'''
frame = Dot11(type="Data", subtype=0)
frame[Dot11].addr1 = station
frame[Dot11].addr2 = radio.addresses[0]
frame[Dot11].addr3 = radio.addresses[0]
# NOTE: Expected key_info is 0x008a, with the install flag
# this becomes 0x00ca.
eapol = WPA_key( descriptor_type = 2,
key_info = 0x00ca, # Includes an invalid install flag!
replay_counter = struct.pack(">Q", 100))
frame /= LLC()/SNAP()/EAPOL(version="802.1X-2004", type="EAPOL-Key")
frame /= eapol
self.spoof_frame(radio, freq, station, raw(frame))
def spoof_frame(self, radio, freq, station, frame):
'''
@ -442,7 +475,7 @@ class Hwsim(iwd.AsyncOpAbstract):
HWSIM_INTERFACE_INTERFACE)
iface.SendFrame(dbus.ByteArray.fromhex(station.replace(':', '')),
freq, -30, dbus.ByteArray.fromhex(frame))
freq, -30, frame)
def get_radio(self, name):
for path in self.radios: