deobfuscate mk2

def deobfuscate(source_cmdline):
    import re
    import base64
    elems = source_cmdline.split('&')
    encoded_str = elems[0]
    encoded_str = encoded_str.replace('^','')
    SUB = re.compile(r'.*set.*(.)=(.)!',re.IGNORECASE)
    for e in elems[1:-1]:
        m=SUB.match(e)
        if m:
            encoded_str = encoded_str.replace(m.group(1),m.group(2))
    m=re.match(r'.*\s([A-Za-z0-9]+=?=?)', encoded_str)
    if m:
        try:
            b=base64.b64decode(m.group(1))
            encoded_str=b.replace('\x00','')
        except:
            pass
    m=re.match(r'.*=.(http.+\.[Ss][Pp][Ll][Ii][Tt]\(...\))',encoded_str)
    if m:
        u=m.group(1)
        urls = u[:-12].split(u[-3])
        return urls
    else:
        return []