Save a string of HEXs into a bin file and curl it away

hexfile.py

import binascii

data = '4b4344'

with open('bla.bin', 'wb') as fout:
    for hex in [data[i:i+2] for i in range(0, len(data), 2)]:
        fout.write(binascii.unhexlify(hex))

# now send it with curl -X POST --data-binary @bla.bin http://foo.com