View Issue Details

IDProjectCategoryView StatusLast Update
0008778Kali LinuxNew Tool Requestspublic2024-06-13 17:45
ReporterBmiller132 Assigned To 
PrioritynormalSeverityminorReproducibilityhave not tried
Status newResolutionopen 
Summary0008778: I made a new tool for catching people in your Linux environment

Make sure to credit Benjamin Hunter Miller.Creating a tool on Kali Linux that captures a 20-second video from the webcam when an incorrect password is entered and then emails it to you involves multiple steps. This can be broken down into these main parts:

1.  Capturing the Incorrect Password Attempt: This involves monitoring login attempts and detecting when an incorrect password is entered.
2.  Recording a Video: Using the webcam to capture a 20-second video.
3.  Emailing the Video: Sending the captured video to a specified email address.

For this example, we’ll use Python and a few libraries to accomplish these tasks.

Step 1: Capturing Incorrect Password Attempt

To capture incorrect password attempts, you can monitor the system authentication logs. On many Linux systems, login attempts are logged in /var/log/auth.log or /var/log/secure.

Step 2: Recording a Video

To capture video from the webcam, you can use the opencv-python library.

Step 3: Emailing the Video

To send emails, you can use the smtplib library in Python.

Here’s a step-by-step guide to create this tool:


1.  Install necessary libraries:

sudo apt update
sudo apt install python3 python3-pip
pip3 install opencv-python
pip3 install smtplib
pip3 install email

Script to Monitor Log, Capture Video, and Send Email

Create a Python script (e.g.,

import cv2
import time
import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.base import MIMEBase
from email import encoders
import os
import subprocess
from datetime import datetime, timedelta

Email details

EMAIL_ADDRESS = "[email protected]"
EMAIL_PASSWORD = "your_email_password"
RECIPIENT_EMAIL = "[email protected]"

def send_email(filename):
msg = MIMEMultipart()
msg['From'] = EMAIL_ADDRESS
msg['Subject'] = "Security Alert: Incorrect Password Attempt"

attachment = MIMEBase('application', 'octet-stream')
attachment.set_payload(open(filename, "rb").read())
attachment.add_header('Content-Disposition', 'attachment; filename="%s"' % os.path.basename(filename))

server = smtplib.SMTP('', 587)
server.sendmail(EMAIL_ADDRESS, RECIPIENT_EMAIL, msg.as_string())

def record_video():
cap = cv2.VideoCapture(0)
if not cap.isOpened():
print("Cannot open camera")

fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('intruder.avi', fourcc, 20.0, (640, 480))

start_time =
while ( - start_time).seconds < 20:
    ret, frame =
    if not ret:
        print("Can't receive frame (stream end?). Exiting ...")


def monitor_log():
log_file = '/var/log/auth.log'
p = subprocess.Popen(['tail', '-F', log_file], stdout=subprocess.PIPE, stderr=subprocess.PIPE)

while True:
    line = p.stdout.readline().decode('utf-8')
    if "Failed password" in line:
        print("Incorrect password attempt detected")

if name == "main":

Important Considerations

1.  Permissions: This script needs to read system log files which require root permissions. Run the script with sudo.
2.  Security: Storing email credentials in the script is not secure. Consider using environment variables or a more secure method to handle credentials.
3.  Dependencies: Ensure all required Python packages are installed.

Running the Script

Save the script as and run it with:

sudo python3

This script will:

•   Monitor the /var/log/auth.log for any “Failed password” entries.
•   Capture a 20-second video from the webcam if such an entry is detected.
•   Email the captured video to a specified email address.

This is a basic implementation and can be expanded with additional features and error handling as required.




2024-06-13 17:45

manager   ~0019365

As it stands what you have made is not able to be added into Kali for a couple reasons.

  • This isn't something that is able to be packaged up and released. All you have is a script that the user creates, there isn't any licenses or anything since the user creates it. You need to create a more automated script that is able to be ran by the user rather than created by the user.
  • The format of this bug report is wrong, you had a previous ticket that was closed where you were given links to how to create a more actionable report. Please follow the proper guide given:

If you are able to address those two points, we will be able to give this more thought, but as it stands this isn't something we can take any form of action on.

Issue History

Date Modified Username Field Change
2024-06-13 16:35 Bmiller132 New Issue
2024-06-13 17:45 Gamb1t Note Added: 0019365