diff options
Diffstat (limited to 'libmproxy/contrib/jsbeautifier/unpackers/myobfuscate.py')
-rw-r--r-- | libmproxy/contrib/jsbeautifier/unpackers/myobfuscate.py | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/libmproxy/contrib/jsbeautifier/unpackers/myobfuscate.py b/libmproxy/contrib/jsbeautifier/unpackers/myobfuscate.py deleted file mode 100644 index 9893f95f..00000000 --- a/libmproxy/contrib/jsbeautifier/unpackers/myobfuscate.py +++ /dev/null @@ -1,86 +0,0 @@ -# -# deobfuscator for scripts messed up with myobfuscate.com -# by Einar Lielmanis <einar@jsbeautifier.org> -# -# written by Stefano Sanfilippo <a.little.coder@gmail.com> -# -# usage: -# -# if detect(some_string): -# unpacked = unpack(some_string) -# - -# CAVEAT by Einar Lielmanis - -# -# You really don't want to obfuscate your scripts there: they're tracking -# your unpackings, your script gets turned into something like this, -# as of 2011-08-26: -# -# var _escape = 'your_script_escaped'; -# var _111 = document.createElement('script'); -# _111.src = 'http://api.www.myobfuscate.com/?getsrc=ok' + -# '&ref=' + encodeURIComponent(document.referrer) + -# '&url=' + encodeURIComponent(document.URL); -# var 000 = document.getElementsByTagName('head')[0]; -# 000.appendChild(_111); -# document.write(unescape(_escape)); -# - -"""Deobfuscator for scripts messed up with MyObfuscate.com""" - -import re -import base64 - -# Python 2 retrocompatibility -# pylint: disable=F0401 -# pylint: disable=E0611 -try: - from urllib import unquote -except ImportError: - from urllib.parse import unquote - -from . import UnpackingError - -PRIORITY = 1 - -CAVEAT = """// -// Unpacker warning: be careful when using myobfuscate.com for your projects: -// scripts obfuscated by the free online version call back home. -// - -""" - -SIGNATURE = (r'["\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4A\x4B\x4C\x4D\x4E\x4F' - r'\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5A\x61\x62\x63\x64\x65' - r'\x66\x67\x68\x69\x6A\x6B\x6C\x6D\x6E\x6F\x70\x71\x72\x73\x74\x75' - r'\x76\x77\x78\x79\x7A\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x2B' - r'\x2F\x3D","","\x63\x68\x61\x72\x41\x74","\x69\x6E\x64\x65\x78' - r'\x4F\x66","\x66\x72\x6F\x6D\x43\x68\x61\x72\x43\x6F\x64\x65","' - r'\x6C\x65\x6E\x67\x74\x68"]') - -def detect(source): - """Detects MyObfuscate.com packer.""" - return SIGNATURE in source - -def unpack(source): - """Unpacks js code packed with MyObfuscate.com""" - if not detect(source): - return source - payload = unquote(_filter(source)) - match = re.search(r"^var _escape\='<script>(.*)<\/script>'", - payload, re.DOTALL) - polished = match.group(1) if match else source - return CAVEAT + polished - -def _filter(source): - """Extracts and decode payload (original file) from `source`""" - try: - varname = re.search(r'eval\(\w+\(\w+\((\w+)\)\)\);', source).group(1) - reverse = re.search(r"var +%s *\= *'(.*)';" % varname, source).group(1) - except AttributeError: - raise UnpackingError('Malformed MyObfuscate data.') - try: - return base64.b64decode(reverse[::-1].encode('utf8')).decode('utf8') - except TypeError: - raise UnpackingError('MyObfuscate payload is not base64-encoded.') |