Python to look for hexadecimal patterns in a file
By Pierre-Alain B on Sunday, October 23 2016, 14:01 - Permalink
It is quite easy to look for hexadecimal patterns in a file in Python, for example match for the magic numbers for JPG or PNG:
import re with open("~/file", "rb") as f: pattern = b'(\xFF\xD8\xFF\xE0|\xFF\xD8\xFF\xE1|\xFF\xD8\xFF\xDB|\x89\x50\x4E\x47\x0D\x0A\x1A\x0A)' regex = re.compile(pattern) for match in regex.finditer(f.read()): print "%s" % (match.start())
This should print all the positions in the file where the given hexadecimal patterns were seen.