[ianonavy]

Obfuscation madness!

[soulcyon]

xD where have I seen this before

edit:
ah, I got too curious and spoiled it for myself

Spoiler

// Strings to grab letters from
var k1 = (''+[].indexOf),		// function indexOf() { [native code] }
    k2 = (![]+[]),			// false
    k3 = (''+!+[]/[]),			// Infinity
    k4 = ([![]]+[][[]]),		// falseundefined
    k5 = (''+!![]),			// true
    k6 = (![]+[]);			// false;

// Indicies of those letters
var i1 = ''+(+!+[])+(+!+[]),		// 11
    i2 = +!+[],				// 1
    i3 = +!+[],				// 1
    i4 = +!+[]+[+[]],			// 10
    i5 = +!+[]+!![]+!![],		// 3
    i6 = !+[]+!+[];			// 2

return k1[i1] + k2[i2] + k3[i3] + k4[i4] + k5[i5] + k6[i6] + 	// daniel
		(+!+[]) + 					// 1
		(!+[]+!+[]+!+[]+!+[]+!+[]);			// 5
		

Well done dan xD

This post has been edited by souless: 09 October 2011 - 10:50 PM

[Daniel15]

Indeed

It's saying "naniel15" instead of "daniel15" in Internet Explorer. The output of Array.prototype.indexOf.toString() is slightly different in IE and I can't figure out any other relatively hidden ways to get a "d"

[soulcyon]

Daniel15, on 09 October 2011 - 10:35 PM, said:

Indeed

It's saying "naniel15" instead of "daniel15" in Internet Explorer. The output of Array.prototype.indexOf.toString() is slightly different in IE and I can't figure out any other relatively hidden ways to get a "d"

look at my spoiled code, use "undefined" string from

([![]]+[][[]])

Or use

"".indexOf

(strings are kind of like Arrays too)

This post has been edited by souless: 09 October 2011 - 10:51 PM

[Daniel15]

Nice work unobfuscating the code, souless! Took me a while to write. I saw something similar on some blog a while back (forgot the link though) and thought I'd try something similar XD

Great idea to use undefined. I didn't think about that!

Hmm, I could change "k3" to

([]/[]) 

(NaN) instead

[soulcyon]

Daniel15, on 09 October 2011 - 10:53 PM, said:

Nice work unobfuscating the code, souless! Took me a while to write. I saw something similar on some blog a while back (forgot the link though) and thought I'd try something similar XD

Great idea to use undefined. I didn't think about that!

Hmm, I could change "k3" to

([]/[]) 

(NaN) instead

xD "daNiel" -> "daniel", I like the idea though.

You could also use

typeof !![] 

which is "boolean" for lowercase "n", but the typeof would give it away. Or this for jokes,

'' + "".toString

which return "function toString() { [native code] }" and take 23rd character.

Here's a fun way to write "15":

017

or

14 | 9

or

6^9

or

30 >> 1

or

0x1 | 0x2 | 0x4 | 0x8

[Smarag]

It doesn't work in Chrome 14 and Chrome Canary :3.

[Kyek]

Smarag, on 10 October 2011 - 05:50 AM, said:

It doesn't work in Chrome 14 and Chrome Canary :3.

It will-- they just have a feature where the address bar eliminates the "javascript:" when you paste it in. So you have to go back and type it manually ;-).

This is nice, though, especially seeing that you put it together yourself . There's a generator for these somewhere on the internet (I found one before... but am feeling strikingly lazy now ;-)) that lets you specify what characters you'll allow. Everything from "Only ()[]" to ()[]{}0-9+-|/ etc. It's seriously impressive, the amount of time people have put into this xD

[Daniel15]

Oh really? I'll have to find a generator and see if I can learn any more tricks xD

I'd love to know how to make an uppercase D so I can make it say "Daniel15" instead of "daniel15"

[soulcyon]

xD I doubt there's a generator for this, since it requires real creative skill. I could imagine a randomizing generator, but since not all letters are possible it would be very messy.

How about this for "Daniel15"?

var result = String['\u0066\u0072\u006f\u006d\u0043\u0068\u0061\u0072\u0043\u006f\u0064\u0065'](''+((!+[]+!+[]+!+[])<<1)+((!+[]+!+[])<<2),''+(((!+[]+!+[])<<2)+!+[])+(((!+[]+!+[]+!+[])<<1)+!+[]),+!![]+''+(+!![])+(+![]),+!![]+''+(+![])+((+!![]<<2)+!+[]),+!![]+''+(+![])+(+!![]),+!![]+''+(+![])+(+!![]+!![]<<2),((!+[]+!+[]+!+[])<<(!+[]<<+!+[]+!+[]))+!+[],''+((!+[]<<!+[]+!+[])+!+[])+(!+[]+!+[]+!+[]));

[DarkCoder]

Doesn't work in Chrome, should be this:

javascript:alert((''+[][[]])[!+[]+!+[]]+(![]+[])[+!+[]]+(''+!+[]/[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(''+!![])[+!+[]+!![]+!![]]+(![]+[])[!+[]+!+[]]+(+!+[])+(!+[]+!+[]+!+[]+!+[]+!+[]))

Notice the javascript:, stops Chrome from opening a search page

[NeilHanlon]

Works fine for me in chrome... Chrome strips javascript: from urls (because of assholes on facebook)

[soulcyon]

Oh, we can do this, dur:

Click me for p33n!
edit: nvm, javascript: links dont work on wdr

This post has been edited by souless: 10 October 2011 - 12:27 PM

[Daniel15]

I just remembered this again while looking at my signature. For fun, I tried putting the code into Google's Closure Compiler and... it came back with broken code

alert((""+[][[]])[2]+(false+[])[1]+(""+1/0)[1]+([false]+[][[]])[1+[0]]+"true"[3]­+(false+[])[2]+1+5);

YUI was smart enough to not try and optimise it

[soulcyon]

Google Closure destroys any other compressor, imo. I think you copied/pasted it wrong, not sure. Copy/paste mine block of code, it works fine.

Your original code compressed to (101 bytes) Simple optimization:

alert((""+[][[]])[2]+(false+[])[1]+(""+1/0)[1]+([false]+[][[]])[1+[0]]+"true"[3]+(false+[])[2]+1+5);

I had to change the code slightly for advanced optimization:

(function(a,B){b[a]((''+[][[]])[!+[]+!+[]]+(![]+[])[+!+[]]+(''+!+[]/[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(''+!![])[+!+[]+!![]+!![]]+(![]+[])[!+[]+!+[]]+(+!+[])+(!+[]+!+[]+!+[]+!+[]+!+[]))})('alert', this);

compressed to EXACT SAME CODE (101 bytes):

alert((""+[][[]])[2]+(false+[])[1]+(""+1/0)[1]+([false]+[][[]])[1+[0]]+"true"[3]+(false+[])[2]+1+5);

YUI is not smart enough to optimize it!

[callumacrae]

Surely optimised it would be this?

javascript:alert("Daniel15")

[soulcyon]

callumacrae, on 12 November 2011 - 05:18 PM, said:

Surely optimised it would be this?

javascript:alert("Daniel15")

But you can only assume so much, because if you change a few of the parameters, the result could be a Number instead of a String (numbers also use + operator).

[callumacrae]

I made a dumb generator: http://jsfiddle.net/r8HFE/

I worked out all the values by hand, by the way (some are missing, it'll just put the letters in. Other letters are hacky).

It only works in Safari, because they turn functions into strings differently.