Convert CLSID to Hex

clsid.py

#!/usr/bin/env python
import binascii
import sys

'''
Usage:
python3 clsid.py 85131631-480C-11D2-B1F9-00C04F86C324
311613850c48d211B1F900C04F86C324
'''

def parse(clsid):
    parts = [binascii.unhexlify(chunk) for chunk in clsid.split('-')]
    repacked = [int.from_bytes(parts[0], byteorder='little'), 
                int.from_bytes(parts[1], byteorder='little'), 
                int.from_bytes(parts[2], byteorder='little'),
                int.from_bytes(parts[3], byteorder='big'),
                int.from_bytes(parts[4], byteorder='big')]
    return '{:08x}{:04x}{:04x}{:04X}{:012X}'.format(*repacked)

if __name__ == '__main__':
    print(parse(sys.argv[1]))