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wifisniff.py
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wifisniff.py
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# -*- coding:utf-8 -*-
from scapy.all import *
import queue
import json
class Wifi:
iface = 'prism0'
aps = []
aps2 = []
channel_lst = set()
frequency_lst = {
"1": 2412,
"2": 2417,
"3": 2422,
"4": 2427,
"5": 2432,
"6": 2437,
"7": 2442,
"8": 2447,
"9": 2452,
"10": 2457,
"11": 2462,
"12": 2467,
"13": 2472,
"32": 5160,
"34": 5170,
"36": 5180,
"38": 5190,
"40": 5200,
"42": 5210,
"44": 5220,
"46": 5230,
"48": 5240,
"50": 5250,
"52": 5260,
"54": 5270,
"56": 5280,
"58": 5290,
"60": 5300,
"62": 5310,
"64": 5320,
"68": 5340,
"96": 5480,
"100": 5500,
"102": 5510,
"104": 5520,
"106": 5530,
"108": 5540,
"110": 5550,
"112": 5560,
"114": 5570,
"116": 5580,
"118": 5590,
"120": 5600,
"122": 5610,
"124": 5620,
"126": 5630,
"128": 5640,
"132": 5660,
"134": 5670,
"136": 5680,
"138": 5690,
"140": 5700,
"142": 5710,
"144": 5720,
"149": 5745,
"151": 5755,
"153": 5765,
"155": 5775,
"157": 5785,
"159": 5795,
"161": 5805,
"165": 5825,
"169": 5845,
"173": 5865,
"183": 4915,
"184": 4920,
"185": 4925,
"187": 4935,
"188": 4940,
"189": 4945,
"192": 4960,
"196": 4980,
"0": 0
}
def __init__(self, iface='prism0'):
self.iface = iface
def start(self):
sniff(iface = self.iface, prn = self.worker)
def get_rssi(self, pkt):
# 在混杂模式下获取信号强度。
# 参考 https://stackoverflow.com/questions/10818661/scapy-retrieving-rssi-from-wifi-packets
rssi = -100
if pkt.haslayer(Dot11Beacon) or pkt.haslayer(Dot11ProbeResp):
try:
if pkt.type == 0 and (pkt.subtype == 5 or pkt.subtype == 8):
extra = pkt.notdecoded
rssi = -(256-ord(extra[-4:-3]))
except:
pass
#print("WiFi signal strength:", rssi, "dBm of", pkt.addr2, pkt.info)
return rssi
def get_channel(self, pkt):
# 获取信道频率
# 参考 https://tutorials.technology/tutorials/49-Process-wifi-packets-with-scapy.html
channel = 0
if ((pkt.haslayer(Dot11Beacon))):
try:
if pkt.type == 0 and (pkt.subtype == 5 or pkt.subtype == 8):
channel = int(ord(pkt[Dot11Elt:3].info))
except:
pass
return channel
def get_frequency(self, channel):
frequency = int(self.frequency_lst[str(channel)]/1000)
if frequency == 2:
frequency = 2.4
return "{}GHz".format(frequency)
def get_aps(self, pkt):
#
# 加密类型识别参考： https://stackoverflow.com/questions/21613091/how-to-use-scapy-to-determine-wireless-encryption-type/21664038#21664038
# 参考scapy源码： https://github.com/secdev/scapy/blob/c3b6d41fea1d916ab1cb8e40f20bd135c116bf92/scapy/layers/dot11.py#L442
# 识别加密算法参考： https://gist.github.com/tintinweb/04c14d1497001e55e6c10ca28f198fbe
# https://gist.github.com/garyconstable/16b12823411c2d6515fb
'''
'\x01\x00' #RSN Version 1
'\x00\x0f\xac\x02' #Group Cipher Suite : 00-0f-ac TKIP
'\x02\x00' #2 Pairwise Cipher Suites (next two lines)
'\x00\x0f\xac\x04' #AES Cipher
'\x00\x0f\xac\x02' #TKIP Cipher
'\x01\x00' #1 Authentication Key Managment Suite (line below)
'\x00\x0f\xac\x02' #Pre-Shared Key
'\x00\x00')) #RSN Capabilities (no extra capabilities)
'''
bssid = pkt[Dot11].addr3
mac = pkt[Dot11].addr2
p = pkt[Dot11Elt]
cap = pkt.sprintf("{Dot11Beacon:%Dot11Beacon.cap%}"
"{Dot11ProbeResp:%Dot11ProbeResp.cap%}").split('+')
ssid, channel, channel_frequency = None, None, None
crypto = set()
is_hidden = 0
while isinstance(p, Dot11Elt):
if p.ID == 0:
ssid = p.info
try:
if binascii.hexlify(p.info)[:2] == '00':
is_hidden = 1
ssid = ""
if not p.info.strip():
is_hidden = 1
except:
print("hexlify error")
pass
elif p.ID == 3:
channel = ord(p.info)
# 信道频率参考 https://en.wikipedia.org/wiki/List_of_WLAN_channels
channel_frequency = self.get_frequency(channel)
elif p.ID == 48:
# 将info中的十六进制转换为字符串，使用 5*2-5*2+2 取02 AES Cipher或04 TKIP Cipher表示十六进制的字符，
# WPA-PSK / WPA2-PSK使用-6:-4取PKS值02表示十六进制的字符
# 例如:
# binascii.hexlify(p.info)[5*2:5*2+2]
# binascii.hexlify(p.info)[-6:-4]
if binascii.hexlify(p.info)[5*2:5*2+2] == '02':
#print("====================5============= TKIP")
pass
if binascii.hexlify(p.info)[5*2:5*2+2] == '04':
#print("====================5============= AES")
pass
if binascii.hexlify(p.info)[-6:-4] == '02':
#print("====================11============= PSK")
crypto.add("WPA2-PSK")
else:
crypto.add("WPA2")
elif p.ID == 221 and p.info.startswith('\x00P\xf2\x01\x01\x00'):
crypto.add("WPA")
p = p.payload
if not crypto:
if 'privacy' in cap:
crypto.add("WEP")
else:
crypto.add("OPN")
ap = {
"ssid": ssid,
"mac": mac,
"is_hidden": is_hidden,
"bssid": bssid,
"channel": channel,
"channel_frequency": channel_frequency,
"rssi": self.get_rssi(pkt),
"crypto": list(crypto)
}
print("ssid: {ssid},mac: {mac},is_hidden: {is_hidden}, bssid: {bssid}, channel: {channel}, channel_frequency: {channel_frequency}, rssi: {rssi}, crypto: {crypto}".format(
ssid=ssid,
mac=mac,
is_hidden=is_hidden,
bssid=bssid,
channel=channel,
channel_frequency=channel_frequency,
rssi=self.get_rssi(pkt),
crypto=list(crypto)
)
)
#print(json.dumps(ap))
#print("NEW AP: %r [%s], channed %d, %s" % (str(ssid).decode('utf-8'), bssid, channel,' / '.join(crypto)))
self.aps2.append(ap)
return self.aps2
def worker(self, pkt):
# info = pkt.sprintf("{Dot11Beacon:%Dot11.addr3% %Dot11Beacon.info% %PrismHeader.channel% %Dot11Beacon.cap%}")
# print(info)
try:
if pkt.haslayer(Dot11):
if pkt.type == 0 and (pkt.subtype == 5 or pkt.subtype == 8):
if pkt.addr2 not in self.aps:
self.aps.append(pkt.addr2)
self.get_aps(pkt)
'''
rssi = self.get_rssi(pkt)
channel = self.get_channel(pkt)
print("test channel: %s"%channel)
channel = int(ord(pkt[Dot11Elt:3].info))
print("WIFI SSID: %s WIFI Name: %s RSSI: %s Channel: %s"%(pkt.addr2, pkt.info, rssi, channel))
#sig_str = -(256-ord(pkt.notdecoded[-4:-3]))
#print("signal strength: %s" % sig_str)
self.ssid = pkt.addr2
'''
except Exception as e:
print(e)
if __name__ == '__main__':
iface = 'prism0'
try:
opts, args = getopt.getopt(sys.argv[1:],'i:',['interface=','help'])
except getopt.GetoptError as e:
sys.exit('use -i or --interface')
for o, opt in opts:
if o in ("-i", "--interface"):
iface = opt
Wifi(iface=iface).start()