With Python script, you can monitor nearby network devices?

Posted by oliverw92 on Mon, 07 Feb 2022 08:37:20 +0100

characteristic

Wi Fi device scanning
Email reminder
Wechat reminder (Server sauce)
Strange equipment detection

principle

In Wi Fi networks, the wireless network card transmits signals in broadcast mode. When the wireless network card broadcasts the information, all devices can receive the information. After the wireless network card is set to the monitoring mode, all data packets within the receiving range of the network card can be captured. Through these packets, you can scan the devices and signal strength in the nearby Wi Fi network.

Network card in monitoring mode

Some network cards that support listening mode

wifi-adapter-that-supports-monitor-mode

Software installation

Mac

brew install wireshark
 brew cask install wireshark-chmodbpf

Linux or Raspberry Pi

sudo apt-get install tshark

# run as non-root

sudo dpkg-reconfigure wireshark-common     (select YES)
sudo usermod -a -G wireshark ${USER:-root}
newgrp wireshark

Configure network card

If it is a network card that supports listening mode, it can be run directly
If it happens to be Rtl8192 + Raspberry Pi, you need to unload the rtl8192 driver first, and then load the RTL8188 driver

#!/usr/bin/env bash
uname -a

# disable rtl8192 driver
sudo depmod 4.14.79-v7+
sudo rmmod 8192cu
sudo modprobe rtl8192cu

# set RTL8188 monitor mode
sudo ifconfig wlan1 down
sudo iwconfig wlan1 mode monitor
sudo ifconfig wlan1 up

Run code

Download code

git clone https://github.com/wangshub/hmpa-pi.git
cd hmpa-pi/ && pip install -r requirements.txt

Edit profile

cp config/config.py.example config/config.py
vi config/config.py

Reference configuration

adapter = 'wlan1'

use_email = True
email = {"host": "smtp.163.com",
         "port": 465,
         "user": "xxxxxxx@163.com",
         "password": "xxxxxxxxxx",
         "to_user": "xxxxxxxx@xxxx.com"}

use_wechat = True
serverchan = {"sckey": "xxxxxxxxxxxxxxxxxxxxx"}

known_devices = {"94:65:2d:xx:xx:xx": "my cellPhone",
                 "dc:a4:ca:xx:xx:xx": "my Mac",
                 "b8:27:eb:xx:xx:xx": "my raspberry"}

function

python main.py

Operation results

2019-01-24 07:37:01.211617 A total of 67 devices were found

Known Devices:
- my cellPhone
- my raspberry
- my mac

All Devices:
- 00:e0:70:3e:xx:xx 14 DH TECHNOLOGY
- 94:65:2d:91:xx:xx 14 OnePlus Technology (Shenzhen) Co., Ltd
- dc:d9:16:7e:xx:xx -12 HUAWEI TECHNOLOGIES CO.,LTD
- b8:27:eb:12:xx:xx -20 Raspberry Pi Foundation
- 98:01:a7:eb:xx:xx -40 Apple, Inc.
- 20:5d:47:44:xx:xx -44 vivo Mobile Communication Co., Ltd.
- ac:b5:7d:5f:xx:xx -46 Liteon Technology Corporation
- 04:03:d6:1f:xx:xx -47 Nintendo Co.,Ltd
- d4:ee:07:55:xx:xx -48 HIWIFI Co., Ltd.
- 44:6e:e5:63:xx:xx -51 HUAWEI TECHNOLOGIES CO.,LTD
- 14:75:90:8d:xx:xx -51 TP-LINK TECHNOLOGIES CO.,LTD.
- 34:96:72:1d:xx:xx -56 TP-LINK TECHNOLOGIES CO.,LTD.
- d8:cb:8a:74:xx:xx -57 Micro-Star INTL CO., LTD.
- 40:8d:5c:21:xx:xx -57 GIGA-BYTE TECHNOLOGY CO.,LTD.
- 6c:59:40:25:xx:xx -58 SHENZHEN MERCURY COMMUNICATION TECHNOLOGIES CO.,LTD.

More ...

TODO

Beautify printed information
More elegant parameter configuration
Alert when a new device is found
Drawing statistics
Equipment distance estimation

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Topics: Python network Programmer

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