Build A MAC Changer In Python

Python Code

A quick and easy script.

Method 1.

import subprocess  

# Define the network interface and the new MAC address
interface = "eth0"  # Replace with the name of your network interface new_mac = "00:11:22:33:44:55"  # Replace with the desired MAC address

# Disable the network interface 
subprocess.call(["ifconfig", interface, "down"])  

# Change the MAC address 
subprocess.call(["ifconfig", interface, "hw", "ether", new_mac])  

# Enable the network interface 
subprocess.call(["ifconfig", interface, "up"])  
print(f"MAC address of {interface} changed to {new_mac}")

Step 1: Open a Python code editor or create a new Python script file.

Step 2: Copy and paste the code provided above into the script.

Step 3: Replace "eth0" with the name of your network interface (you can find this using

the ifconfig or ip addr command) and replace "00:11:22:33:44:55" with the MAC address you want to set.

Step 4: Save the script with a .py extension, for example, change_mac.py.

Step 5: Open a terminal and run the script using python change_mac.py.

This code will temporarily change the MAC address of the specified network interface. Please use it responsibly and for lawful purposes.

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Method 2.

import string
import random

class MacAddressGenerator:
    def __init__(self):
        self.uppercased_hexdigits = ''.join(set(string.hexdigits.upper())

    def generate_random_mac_address(self):
        mac = ""
        for i in range(6):
            for j in range(2):
                if i == 0:
                    mac += random.choice("02468ACE")
                else:
                    mac += random.choice(self.uppercased_hexdigits)
            mac += ":"
        return mac.strip(":")

# Example usage:
mac_generator = MacAddressGenerator()
random_mac = mac_generator.generate_random_mac_address()
print(random_mac)

We define a class named MacAddressGenerator to encapsulate the MAC address generation logic.

1. In the class constructor, __init__, we initialize an instance variable uppercased_hexdigits. This variable contains all the uppercase hexadecimal digits (0-9 and A-F) and is used to ensure that we generate valid MAC address characters.
   

2. The generate_random_mac_address method generates a random MAC address. Here's a step-by-step explanation of what this method does: a. Initialize an empty string mac to store the MAC address. b. Iterate six times (for the six pairs of characters in a MAC address). c. For each pair, iterate twice (for the two characters in the pair). d. For the first character of the pair (at i == 0), select a random character from the set "02468ACE." This is because the second character of a MAC address must be one of these values. e. For the second character of the pair, select a random uppercase hexadecimal digit from uppercased_hexdigits. f. Add a colon ":" between each pair of characters. g. Finally, strip the trailing colon from the MAC address string.
   

3. After defining the MacAddressGenerator class, we create an instance of it (mac_generator) and use the generate_random_mac_address method to obtain a random MAC address.
   

4. The generated MAC address is printed to the console.

#python #macchanger #cybersecurity

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