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:

Prerequisites

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., security_monitor.py):

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['To'] = RECIPIENT_EMAIL
msg['Subject'] = "Security Alert: Incorrect Password Attempt"

attachment = MIMEBase('application', 'octet-stream')
attachment.set_payload(open(filename, "rb").read())
encoders.encode_base64(attachment)
attachment.add_header('Content-Disposition', 'attachment; filename="%s"' % os.path.basename(filename))
msg.attach(attachment)

server = smtplib.SMTP('smtp.gmail.com', 587)
server.starttls()
server.login(EMAIL_ADDRESS, EMAIL_PASSWORD)
server.sendmail(EMAIL_ADDRESS, RECIPIENT_EMAIL, msg.as_string())
server.quit()

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

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

start_time = datetime.now()
while (datetime.now() - start_time).seconds < 20:
    ret, frame = cap.read()
    if not ret:
        print("Can't receive frame (stream end?). Exiting ...")
        break
    out.write(frame)

cap.release()
out.release()
cv2.destroyAllWindows()

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")
        record_video()
        send_email('intruder.avi')

if name == "main":
monitor_log()

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 security_monitor.py and run it with:

sudo python3 security_monitor.py

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.