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symbolicjs

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Notes on JavaScipt obfuscation

Inspired by JSFuck, but here's the rules:

  • 7-bit printable ASCII (32 to 126)
  • No alphanumerics ([a-zA-Z0-9]), no spaces, only `` quotes

Build some strings with keywords

Use either `${<code>}` or (<code>+[]) to obtain useful keywords:

keywordcode
[object Object]{}
true !``
false![]
NaN-`!`
undefined[][[]]
-Infinity~[]/[]

Index the strings with numerals

numbercode
-4~-~-~!``
-3~-~!``
-2~!``
-1~``
-0-``
0+``
1+!``
2-~!``
3-~-~!``
4-~-~-~!``

Build a basic alphabet

code
a$$_=`${![]}`[+!``]
b$_$$$=`${{}}`[-~!``]
c$_$_$=`${{}}`[-~-~-~-~!``]
d$_$$=`${[][[]]}`[-~!``]
e$$=`${!``}`[-~-~!``]
f$$$_$=`${![]}`[-``]
i$$$=`${[][[]]}`[-~-~-~-~!``]
j$$___=`${{}}`[-~-~!``]
l$$_$$=`${![]}`[-~!``]
n$_$=`${[][[]]}`[+!``]
o$___=`${{}}`[+!``]
r$$_$=`${!``}`[+!``]
s$$$$=`${![]}`[-~-~!``]
t$_=`${!``}`[-``]
u$$$_=`${!``}`[-~!``]
y$_$__=`${-~[]/[]}`[-~-~-~-~-~-~!``]
I_$$=`${~[]/[]}`[+!``]
N__$=``${-`!`}`[-``]
O____=`${{}}`[-~-~-~-~-~-~-~!``]
space____$=`${{}}`[-~-~-~-~-~-~!``]

Build a function

$=(_=>_)[$_$_$+$___+$_$+$$$$+$_+$$_$+$$$_+$_$_$+$_+$___+$$_$]

Build the global object

$$$$$=$(`${$$_$+$$+$_+$$$_+$$_$+$_$+____$+$_$$$+$_+$___+$$_}\`${$$+$$+$$_}\``)()[-~-~!``]
_=$($$_$+$$+$_+$$$_+$$_$+$_$+____$+$_+$$$$$+$$$+$$$$)()
symbolicjs.1747030997.txt.gz · Last modified: 2025/05/12 02:23 by Yuki

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