Find all the occurences of pattern in a byte buffer using python.

FindPattern.py

#usage python FindPattern.py sequence pattern
import sys

def str_to_bytes(_bytes):
	current = ""
	sequence = bytearray()
	for ltr in _bytes:
		for i in range(2):
			current += ltr
		sequence.append(int(current, 16))
		current = ""
	return sequence


_bytes   = str_to_bytes(sys.argv[1])
toFind  = str_to_bytes(sys.argv[2])

o = 0
x = 0
m = 0

while(x < len(_bytes)):
	o = x
	for y in range(len(toFind)):
		if(o >= len(_bytes)):
			print("\nNumber of sequences found %u" % m)
			exit(0)
		if(_bytes[o] == toFind[y]):
			o += 1
		if(o-x == len(toFind)-1):
			m += 1
			print("Sequence found at offset: 0x%X" % int(x/2)) 
			x = o
	x += 1