Added fallback parsing and better output
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msr90.py
208
msr90.py
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#!/usr/bin/env python
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# MSR90 Card Reader - Developed by acidvegas in Python (https://acid.vegas/msr90)
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# MSR90 Magnetic Stripe Reader - Developed by acidvegas in Python (https://git.acid.vegas/msr90)
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import getpass
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import re
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import sys
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# ANSI Escape Codes
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YELLOW = '\033[93m'
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RESET = '\033[0m'
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# Numeric values for the service code
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service_code_values = {
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'0': 'No restrictions and PIN required.',
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'1': 'No restrictions.',
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'2': 'Goods and services only (no cash).',
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'3': 'ATM only and PIN required.',
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'4': 'Cash only.',
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'5': 'Goods and services only (no cash), PIN required.',
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'6': 'No restrictions, use of PIN depends on issuers requirements.',
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'7': 'Goods and services only, use of PIN depends on issuers requirements.'
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}
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def format_pan(pan: str) -> str:
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'''
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Format the Primary Account Number (PAN) by grouping the digits in sets of 4
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:param pan: The Primary Account Number (PAN) to format
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'''
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return ' '.join(pan[i:i+4] for i in range(0, len(pan), 4))
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def format_exp_date(exp_date: str) -> str:
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'''
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Format the expiration date by to be MM/YY
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:param exp_date: The expiration date to format'''
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return exp_date[2:4] + '/' + exp_date[0:2]
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def service_code_descriptions(digit, code):
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'''
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Get the description for the service code digit
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:param digit: The digit number (1, 2, or 3)
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:param code: The code value for the digit
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'''
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descriptions = {
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'1': {
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'1': 'International interchange OK',
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'2': 'International interchange, use IC (chip) where feasible',
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'5': 'National interchange only except under bilateral agreement',
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'6': 'National interchange only, use IC (chip) where feasible',
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'7': 'No interchange except under bilateral agreement (closed loop)',
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'9': 'Test'
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},
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'2': {
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'0': 'Normal',
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'2': 'Contact issuer via online means',
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'4': 'Contact issuer via online means except under bilateral agreement'
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},
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'3': {
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'0': 'No restrictions, PIN required',
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'1': 'No restrictions',
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'2': 'Goods and services only (no cash)',
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'3': 'ATM only, PIN required',
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'4': 'Cash only',
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'5': 'Goods and services only (no cash), PIN required',
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'6': 'No restrictions, use PIN where feasible',
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'7': 'Goods and services only (no cash), use PIN where feasible'
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}
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}
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return descriptions[str(digit)].get(code, 'Unknown')
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# Description of the format code
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format_code_values = {
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'A': 'Reserved for proprietary use of the card issuer.',
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'B': 'Used by financial and credit card systems.'
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}
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def parse_magnetic_stripe(data: str):
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'''
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Parse the raw data from the magnetic stripe of a card.
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'''
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Parse the magnetic stripe data and print the results
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:param data: The raw magnetic stripe data to parse
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'''
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:param data: Raw data from the magnetic stripe of a card.
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'''
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# Patterns for specific track data parsing
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track1_pattern = r'^%([AB])(\d{1,19})\^([^\^]{2,26})\^(\d{4})(\d{3})([^\?]*?)\?(\w?)'
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track2_pattern = r';(\d{1,19})=(\d{4})(\d{3})(.*?)\?$'
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# Regex to match the track 1 and track 2 data
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track1 = re.search(r'%([AB])(\d+)\^([^?^]+)\^(\d{4})(\d{3}).*?\?', data)
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track2 = re.search(r';(\d+)=(\d{4})(\d{3}).*?\?', data)
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# Generic patterns to capture raw data if specific parsing fails
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generic_track1_pattern = r'(%[AB][^\?]+\?)'
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generic_track2_pattern = r'(;[^\?]+\?)'
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generic_track3_pattern = r'(\+[^\?]+\?)'
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# Check if the data is valid
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if not track1 or not track2:
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raise ValueError('Invalid data format')
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# Attempt to match the track data
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track1_match = re.search(track1_pattern, data)
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track2_match = re.search(track2_pattern, data)
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track3_match = re.search(generic_track3_pattern, data)
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# Parse the data from the track 1 and track 2
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format_code = track1.group(1)
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account_number = track1.group(2)
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name = track1.group(3).strip()
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expiry_date = track1.group(4)
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expiry_date = f'{expiry_date[2:4]}/{expiry_date[0:2]}'
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service_code = track1.group(5)
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# Track 1 specific parsing
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if track1_match:
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format_code, pan, name, exp_date, service_code, discretionary_data, lrc = track1_match.groups()
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if format_code == 'A':
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print('Error: Unsupported format code \'A\'. Exiting.')
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sys.exit(1)
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formatted_pan = format_pan(pan)
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formatted_exp_date = format_exp_date(exp_date)
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desc1 = service_code_descriptions(1, service_code[0])
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desc2 = service_code_descriptions(2, service_code[1])
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desc3 = service_code_descriptions(3, service_code[2])
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print_fields('Track 1 Data', [
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('Format Code', f'{format_code} - Financial cards (ISO/IEC 7813)'),
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('Primary Account Number (PAN)', formatted_pan),
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('Cardholder Name', name),
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('Expiration Date', formatted_exp_date),
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('Service Code Digit 1', f'{service_code[0]}: {desc1}'),
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('Service Code Digit 2', f'{service_code[1]}: {desc2}'),
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('Service Code Digit 3', f'{service_code[2]}: {desc3}'),
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('Discretionary Data', discretionary_data),
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('LRC (optional)', lrc),
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('Raw Track Data', track1_match.group(0))
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], '\033[93m')
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service_code_description = [
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f'{service_code[0]} - {service_code_values.get(service_code[0], \'Unknown\')}',
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f'{service_code[1]} - {service_code_values.get(service_code[1], \'Unknown\')}',
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f'{service_code[2]} - {service_code_values.get(service_code[2], \'Unknown\')}'
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]
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# Fallback generic track 1
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elif re.search(generic_track1_pattern, data):
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print('Track 1 Data:')
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print('Raw: ' + re.search(generic_track1_pattern, data).group(1))
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format_code_description = format_code_values.get(format_code, 'Unknown')
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print('\n')
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# Track 2 specific parsing
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if track2_match:
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pan, exp_date, service_code, discretionary_data = track2_match.groups()
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formatted_pan = format_pan(pan)
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formatted_exp_date = format_exp_date(exp_date)
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print_fields('Track 2 Data', [
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('Primary Account Number (PAN)', formatted_pan),
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('Expiration Date', formatted_exp_date),
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('Service Code', service_code),
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('Discretionary Data', discretionary_data),
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('Raw Track Data', track2_match.group(0))
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], '\033[96m')
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# Fallback generic track 2
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elif re.search(generic_track2_pattern, data):
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print('Track 2 Data:')
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print('Raw: ' + re.search(generic_track2_pattern, data).group(1))
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print('\n')
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# Track 3 generic data if found
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if track3_match:
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print('Track 3 Data:')
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print('Raw: ' + track3_match.group(1))
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else:
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print('Track 3 Data: No data found.')
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def print_fields(title: str, fields: list, color_code: str):
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'''
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Print the fields in a formatted table
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:param title: The title of the table
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:param fields: The fields to print
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:param color_code: The color code to use for the table
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'''
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max_len = max(len(name) for name, _ in fields)
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print(title)
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for name, value in fields:
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print(color_code + name.ljust(max_len) + '\033[90m | \033[0m' + value)
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# Print the parsed data
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print(f'{YELLOW}Name :{RESET} {name}')
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print(f'{YELLOW}Account Number :{RESET} {account_number}')
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print(f'{YELLOW}Expiration Date :{RESET} {expiry_date}')
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print(f'{YELLOW}Service Code :{RESET} {service_code}')
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for item in service_code_description:
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print(' '*18 + item)
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print(f'{YELLOW}Format Code :{RESET} {format_code} ({format_code_description})')
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print(f'{YELLOW}Track 1 :{RESET} {track1.group(0)}')
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print(f'{YELLOW}Track 2 :{RESET} {track2.group(0)}')
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def main():
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print('Please swipe the card...')
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data = input()
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parse_magnetic_stripe(data)
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if __name__ == '__main__':
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main()
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try:
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swipe_data = getpass.getpass(prompt='Please swipe the card: ')
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parse_magnetic_stripe(swipe_data)
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except Exception as e:
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print('Error:', e)
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