Find data inside a PID memory

memory_find.py

import os, sys, re, time
from bitstring import ConstBitStream

def getPid(program):
	os.system('(pidof ' + program + ') > .tmp')
	pid = open('.tmp', 'r').read()
	return pid.strip()

def seekData(pid, lookForStr):
	maps_file = open("/proc/"+str(pid)+"/maps", 'r')
	mem_file = open("/proc/"+str(pid)+"/mem", 'rb')

	for line in maps_file.readlines():
	    m = re.match(r'([0-9A-Fa-f]+)-([0-9A-Fa-f]+) ([-r])', line)
	    if m.group(3) == 'r':
	        start = int(m.group(1), 16)
	        end = int(m.group(2), 16)

	        try:
	        	mem_file.seek(start)
		        chunk = mem_file.read(end - start)
		        
		        treta = ConstBitStream(chunk)

		        bytesArr = bytearray(lookForStr, 'utf-8')
		        found = treta.find(bytesArr, bytealigned=True)
		        
		        if found:
		            print("Found data start offset at byte %d." % found[0])
		            s0f0, length, bitdepth, height, width = treta.readlist('hex:16, uint:16, uint:8, 2*uint:16')
		            print("Width %d, Height %d" % (width, height))

		            file = open("mem/mem_dat_" + str(start) + "-" + str(end) + ".dat","w")
		            treta.pos = found[0]

		            data = []
		            while treta.pos <= (found[0] + 256):
		            	tmp = treta.read(8).uint
		            	data.append(chr(tmp))

		            file.write(''.join(data))
		            file.close()
	        except:
	        	print("Data could not be read at the momemnt, skiping")

	maps_file.close()
	mem_file.close()

pid = getPid('Tibia/client')
seekData(pid, "Character Name")