A Python script to decode Base64-encoded data

Output

I stumbled across a base64-encoded string while investigating a potential attack, therefore I made the decision to create my own decoder. You can use the base64 module in Python to decode Base64-encoded data. Here's an example script that decodes a Base64 string:

import base64

def decode_base64(base64_string):
    try:
        # Add padding if necessary
        padding = len(base64_string) % 4
        if padding != 0:
            base64_string += '=' * (4 - padding)

        # Decode the Base64 string
        decoded_bytes = base64.b64decode(base64_string)
        # Convert the decoded bytes to a string
        decoded_string = decoded_bytes.decode('utf-8')
        return decoded_string
    except Exception as e:
        print(f"Error decoding Base64: {str(e)}")
        return None

# Example usage
base64_string = "SGVsbG8gV29ybGQh"
decoded_string = decode_base64(base64_string)
print(decoded_string)

In this script, the decode_base64 function takes a Base64-encoded string as input and returns the corresponding decoded string. If there is an error during the decoding process, it will print an error message and return None.

The example usage demonstrates how to decode a Base64 string using the decode_base64 function and then print the decoded string. In this case, the Base64 string "SGVsbG8gV29ybGQh" is decoded to "Hello World!".

You can replace the base64_string variable with your own Base64-encoded string to decode it.

Thank you for reading my post.