AAEncode (o^_^o)

AAEncode is a JavaScript obfuscation technique that converts any JS code into a sequence of Japanese-style ASCII emoticon expressions : characters like (^ω^) ou ( ͡o╭╮ ͡o)

AAencode is a JavaScript code obfuscation process that uses characters and emoticons to hide a program's logic. It is designed to be unreadable for humans but perfectly functional for a JavaScript engine.

The transformation takes place in several key steps:

— Variable initialization: The code begins by defining variables with emoticon names like (o^_^o) and (°Θ°). These variables are not random; they are used to create an array from 0 to 15.

— A series of code is added to establish an environment containing essential strings and functions, including the equivalent of eval(), manipulating strings like false, true, and other JavaScript identifiers (in the style of JSFuck).

— Character encoding: Each character in the text string to be encoded is first converted to its numeric value (ASCII or Unicode). - Emoji substitution: These numeric values are then converted to octal or hexadecimal numbers. Each digit in these numbers (from 0 to F) is replaced with a corresponding emoji expression defined at the beginning of the program.

The hexadecimal digit correspondence table is:

Next comes the interpretation process: when a browser executes the AAencode code, it reconstructs the original code and executes it.

AAEncode is mainly used for:

— Obfuscation: making code very hard to read for humans.

— Evasion: hiding recognizable JavaScript code by converting it into emoticon sequences, which might bypass naive filters.

Use the form on the dCode page above.

An AAEncode script contains almost exclusively kaomoji composed of non-ASCII characters unusual for JS and always begins with:

ω°ﾉ= /｀ｍ´）ﾉ ~┻━┻ //*´∇｀*/ [_]; o=(°ｰ°) =_=3; c=(°Θ°) =(°ｰ°)-(°ｰ°);

and ends with (°Д°)[°o°])(°Θ°))(_);

AAEncode became popular in the early 2010s; the original web demo and analyses credit Yosuke Hasegawa / Japanese pages (utf-8.jp) as the original reference implementation (reused by dCode).