AutoIt Deobfuscator

import sys, re, os
from sys import argv

def Decode(tmpString):
    string = ''
    for byte in range(len(tmpString)/2):
        string += chr(int(tmpString[byte*2:byte*2 + 2],16))
    return string

def deobfuscate(auFile, tblFile, separator, decodeFuncName):
    s = open(tblFile).read()
    t = open(auFile).read()
    l = s.split(separator)
    i=1
    for c in l:
        reStr = '(\$[A-Z,0-9]{11}) = %s\(\$OS\[%d\]\)' % (decodeFuncName, i)
        matchObj = re.search(reStr,t)
        if matchObj is None:
            continue
        tmp = matchObj.group(1)
        tmpStr = '"' + Decode(c) + '"'
        t = t.replace(tmp, tmpStr)
        i+=1
    return t

if __name__ == '__main__':
    if len(argv) < 6:
        print "Usage:  %s auPath tblPath separator decodeFuncName outputPath" % os.path.split(argv[0])[-1]
        print 'Sample: %s test.au3 jguyxxkdfgiuru84.au3.tbl oB8CO A5F00005963 new.au3' % os.path.split(argv[0])[-1]
        sys.exit(1)

    tmp = deobfuscate(argv[1], argv[2], argv[3], argv[4])
    open(argv[5],'wb').write(tmp)