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symbolicjs [2025/05/12 03:06] – Yukisymbolicjs [2025/05/12 14:37] (current) – Yuki
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 ===== Build a basic alphabet ===== ===== Build a basic alphabet =====
 +
 +We can use variables, but only those whose name contains `$` and `_` so we'll use some sort of morse code-based encoding, with `$`=>`.` and `_`=>`-`, and a prefix to differentiate lowercase and uppercase:
  
 ^ ^code^ ^ ^code^
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 |O|''%%____=`${{}}`[-~-~-~-~-~-~-~!``]%%''| |O|''%%____=`${{}}`[-~-~-~-~-~-~-~!``]%%''|
 |space|''%%____$=`${{}}`[-~-~-~-~-~-~!``]%%''| |space|''%%____$=`${{}}`[-~-~-~-~-~-~!``]%%''|
 +
 +Actually, we can just use the ''[a,b]="ab"'' notation to make it way shorter. Note that using ''+[]'' or ''+``'' is now shorter due to the lack of need of parentheses.
  
 <code javascript> <code javascript>
Line 65: Line 69:
 </code> </code>
  
-===== Build a function =====+===== Execute arbitrary code ===== 
 + 
 +Now we have enough letters to execute arbitrary code: 
 + 
 +<code javascript> 
 +$=(_=>_)["constructor"] // returns Function 
 +</code>
  
 <code javascript> <code javascript>
 $=(_=>_)[$_$_$+$___+$_$+$$$$+$_+$$_$+$$$_+$_$_$+$_+$___+$$_$] $=(_=>_)[$_$_$+$___+$_$+$$$$+$_+$$_$+$$$_+$_$_$+$_+$___+$$_$]
 +</code>
 +
 +===== Build more letters =====
 +
 +We can then use `btoa` to get a lot of the letters we're missing:
 +
 +<code javascript>
 +[K,C,g,h]=Function("return btoa`((!`")() // returns 'KCgh'
 +</code>
 +
 +<code javascript>
 +[,,$__$,$$$$$]=$($$_$+$$+$_+$$$_+$$_$+$_$+____$+$_$$$+$_+$___+$$_+`\`((!\``)()
 </code> </code>
  
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 <code javascript> <code javascript>
-[,,$__$,$$$$$]=$(`${$$_$+$$+$_+$$$_+$$_$+$_$+____$+$_$$$+$_+$___+$$_}\`((!\``)()+_=Function("return this")() 
 +</code> 
 + 
 +<code javascript>
 _=$($$_$+$$+$_+$$$_+$$_$+$_$+____$+$_+$$$$$+$$$+$$$$)() _=$($$_$+$$+$_+$$$_+$$_$+$_$+____$+$_+$$$$$+$$$+$$$$)()
 +</code>
 +
 +===== Access global variables and run some code =====
 +
 +<code javascript>
 +_["console"]["log"]("hello")
 +</code>
 +
 +<code javascript>
 +_[$_$_$+$___+$_$+$$$$+$___+$$_$$+$$][$$_$$+$___+$__$]($$$$$+$$+$$_$$+$$_$$+$___)
 </code> </code>
symbolicjs.txt · Last modified: 2025/05/12 14:37 by Yuki

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