aemkei/jsfuck

Write any JavaScript with 6 Characters: []()!+

odog8

@odog8

A, and a backtick ` because i can define a function in the library that evals unary

AAAAAAAAAAAAA...

Oops i mean AAAAAAAA...\

ok nvm

odog8

@odog8

b='';function a(x){if((x+[]).length){b+="0[]!+()"[(x+[]).length];return a}else{b='';return(eval(b))}} its done lol

erennuygun

@erennuygun

hey guys how can i use jsfuck without these chars "! , () , =" for XSS

Martin Kleppe

@aemkei

@erennuygun You might be able to use < instead of ! to convert to booleans. And use backticks instead of parentheses. See: https://github.com/aemkei/jsfuck#alternatives

Ben gurung

@becon:matrix.org

[m]

I am knew in this what it is in its simple explanation and what it does ?

mekb the turtle

@mekbturtle:matrix.org

[m]

this is so smart

i read the source, i was wondering how eval would work, i never knew you could create functions from strings

i'm gonna create a fork and find ways to create characters that aren't there yet

mekb the turtle

@mekbturtle:matrix.org

[m]

oh i gotta make sure it's supported in browser and node and stuff lmao

mekb the turtle

@mekbturtle:matrix.org

[m]

quote is gonna be impossible

image.png

yo, uh, syntax error

unknown81311

@unknown81311

how would you run btoa as a function?
I got [][(([]["entries"]()+"")[2]+(!![]+[])[0]+(true+[]["flat"])[10]+(false+"")[1])]("str")

1 reply

also num to jsfuck
https://codepen.io/cyleja1234/pen/MWpPOQw

I was trying to get typeOf but to get the p you need an m and for an m you need number witch you then need typeOf to get that. so it is sorta like a loop lol

unknown81311

@unknown81311

nvm about the typeOf you can use ([]+(+[])["constructor"]) to get the Number

and that also is a typeOf

unknown81311

@unknown81311

I got fromCharCode

_=+!+[]+!+[],$='',u=[][[]],c=([][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]]+[])[_+_-!+$]+([!![]]+[][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]])[+!+[]+[+[]]]+([][[]]+$)[+!+[]]+(![]+$)[_+_-!+$]+(!![]+$)[+[]]+(!![]+$)[+!+[]]+([][[]]+$)[+[]]+([][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]]+$)[_+_-!+$]+(!![]+$)[+[]]+([!![]]+[][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]])[+!+[]+[+[]]]+(!![]+[])[+!+[]],r=(!![]+$)[+!+[]]+(!![]+$)[_+_-!+$]+(!![]+$)[+[]]+(!![]+$)[_]+(!![]+$)[+!+[]]+([][[]]+$)[+!+[]]+(+[![]]+[][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]])[(+!+$)+$+(+!+$)]+(!![]+$)[_+_-!+$]+(![]+$)[_+_-!+$]+([][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]]+$)[_+_-!+$]+(![]+$)[+!+[]]+(+((_)+$+(+!+$)+$+(+!+$)))[((!![]+$)[+[]]+(!![]+[][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]])[(+!+$)+$+(+$)])+$[c][(u+[])[+!+[]]+(![]+[])[+!+[]]+([]+(+[])[c])[+!+[]+[+!+[]]]+(!![]+[])[_+_-!+$]]]((_+_-!+$)+$+(+!+$))[+!+[]]+(!![]+$)[_+_-!+$],f=([][(![]+$)[+[]]+([][[]]+$)[_+_+!+$]+(![]+$)[_]+(!![]+$)[+[]]+(!![]+$)[_+_-!+$]+(!![]+$)[+!+[]]])[c](r)()(($)[([][[]]+[])[_+_+!+$]+(!![]+$)[+[]]+(![]+$)[+!+[]]+(![]+$)[_]+([][[]]+[])[_+_+!+$]+([][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]]+$)[_+_-!+$]+(![]+$)[_+_-!+$]]())[_],_=(![]+$)[+[]]+(!![]+$)[+!+[]]+([][(!![]+$)[_+_-!+$]+(u+$)[+!+[]]+(!![]+$)[+[]]+(!![]+$)[+!+[]]+([][[]]+[])[_+_+!+$]+(!![]+$)[_+_-!+$]+(![]+$)[_+_-!+$]]()+$)[+(_)+(+[]+$)]+($+(+$)[c])[(+!+$)+$+(+!+$)]+f+(+((+!+$)+$+(+$)+$+(+!+$)))[((!![]+$)[+[]]+(!![]+[][(![]+$)[+[]]+(![]+$)[_]+(![]+$)[+!+[]]+(!![]+$)[+[]]])[(+!+$)+$+(+$)])+$[c][(u+[])[+!+[]]+(![]+[])[+!+[]]+([]+(+[])[c])[1+[+!+[]]]+(!![]+[])[_+_-!+$]]]((_)+$+(+!+$))[+!+[]]+(![]+$)[+!+[]]+(!![]+$)[+!+[]]+f+([][(!![]+$)[_+_-!+$]+(u+$)[+!+[]]+(!![]+$)[+[]]+(!![]+$)[+!+[]]+([][[]]+[])[_+_+!+$]+(!![]+$)[_+_-!+$]+(![]+$)[_+_-!+$]]()+$)[+(_)+(+[]+$)]+([][[]]+$)[_]+(!![]+$)[_+_-!+$]

c is construct starts as 2 u is undefined(because I was having problems) $ is a blank string
then finally becomes fromCharCode

so then you can do $[c][_](69) to get E

mekb the turtle

@mekbturtle:matrix.org

[m]

oh Function exists

(([]["entries"]()+"")[2]+(!![]+[])[0]+(true+[]["flat"])[10]+(false+"")[1])+([]["flat"]+"")[13]+("")["fontcolor"]()[12]+("")["fontcolor"]()[12]+([]["flat"]+"")[14]

hmm

mekb the turtle

@mekbturtle:matrix.org

[m]

:point_up: Edit:

(([]["entries"]()+"")[2]+(!![]+[])[0]+(true+[]["flat"])[10]+(false+"")[1])+([]["flat"]+"")[13]+("")["fontcolor"]()[12]+("")["fontcolor"]()[12]+([]["flat"]+"")[14]

[]["flat"]["constructor"]((true+"")[1]+(true+"")[3]+(true+"")[0]+(undefined+"")[0]+(true+"")[1]+(undefined+"")[1]+([]+[]["flat"])[8]+(false+"")[1]+(!![]+[])[0]+(true+[]["flat"])[10]+([]["entries"]()+"")[2]+([]["flat"]+"")[13]+("")["fontcolor"]()[12]+"ISMkJypAXl9gfH49"+("")["fontcolor"]()[12]+([]["flat"]+"")[14])()