Add python3 script to convert amiibo nfc Flipper Zero files to eml files to be used with Proxmark3

client/pyscripts/pm3_nfc2eml.py

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+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+Script to convert amiibo nfc Flipper Zero files to eml files to be used with Proxmark3
+Date: 18/05/2023
+Script Author: OscarAkaElvis
+Tested on: Linux and Windows
+OscarAkaElvis - https://twitter.com/OscarAkaElvis
+"""
+
+import re
+import argparse
+import os
+from os import path
+from sys import argv
+
+# Vars
+script_name = path.basename(argv[0])
+script_version = "1.0"
+
+# Function to print script's version
+def print_version():
+    print()
+    return 'v{}'.format(script_version)
+
+# Check if the input file is a text file based on its content
+def is_text_file(file_path):
+    with open(file_path, 'rb') as file:
+        try:
+            file_content = file.read().decode('utf-8')
+            return all(ord(char) < 128 for char in file_content)
+        except UnicodeDecodeError:
+            return False
+
+# Main script code
+def main():
+    # Text help data
+    description_text = "Script to convert amiibo nfc Flipper Zero files to eml files to be used with Proxmark3."
+    epilog_text = 'Example:\n    python3 ' + script_name + ' -i file.nfc -o output.eml'
+
+    # Create an argument parser
+    parser = argparse.ArgumentParser(exit_on_error=False, description=description_text, formatter_class=argparse.RawDescriptionHelpFormatter, epilog=epilog_text)
+    # Add the input file argument
+    parser.add_argument("-i", "--input", required=True, help="Path to the input nfc file.")
+    # Add the output file argument
+    parser.add_argument("-o", "--output", required=True, help="Name of the output eml file.")
+    # Add the version argument
+    parser.add_argument('-v', '--version', action='version', version=print_version(), help="Show script's version number and exit")
+
+    # Parse the command-line arguments
+
+    args = parser.parse_args()
+
+    # Extract the file paths from the command-line arguments
+    file_path = args.input
+    output_file = args.output
+
+    # Check if the target file exists
+    if not os.path.isfile(file_path):
+        print(f"[!] The input file '{file_path}' does not exist.")
+        exit(0)
+
+    # Validation to check if the input file is a text file based on its content
+    if not is_text_file(file_path):
+        print("[!] The input file does not appear to be a nfc text file.")
+
+    # Check if the input file name has the .nfc extension
+    if not file_path.lower().endswith('.nfc'):
+        print("[+] Warning. The input file should have the '.nfc' extension.")
+
+    # Get the absolute path of the output file
+    output_file_path = os.path.abspath(output_file)
+
+    # Check if the directory of the output file is writable
+    output_dir = os.path.dirname(output_file_path)
+    if not os.access(output_dir, os.W_OK):
+        print(f"[!] The output directory '{output_dir}' is not writable or doesn't exist.")
+
+    # Check if the output file name has the .eml extension
+    if not output_file.lower().endswith('.eml'):
+        print("[+] Warning. The output file should have the '.eml' extension.")
+
+    # Read the target file
+    with open(file_path, 'r') as file:
+        file_content = file.read()
+
+    # Extract the data from each "Page X" line
+    matches = re.findall(r'Page \d+:(.*?)$', file_content, re.MULTILINE | re.DOTALL)
+
+    if matches:
+        # Remove spaces and convert to lowercase for each match
+        extracted_data = [re.sub(r'\s', '', match).lower() for match in matches]
+
+        # Join the extracted data with line feeds
+        result = '\n'.join(extracted_data)
+
+        # Write the extracted data to the output file
+        with open(output_file_path, 'w', newline='\n') as output_file:
+            output_file.write(result)
+            print(f"[*] File converted successfully. Output eml file written as '{os.path.basename(output_file.name)}'.")
+    else:
+        # If the needed data is not there
+        print("[!] Provided input file seems to not be a valid nfc file to work with.")
+
+# Application entrypoint
+if __name__ == '__main__':
+    try:
+        main()
+    except:
+        pass
+