Faid's Blog™: Offline Javascript Obfuscator

Hmm, back from busy life, i search for Offline JS Obfuscator (javanese people said: 'niku gara2 kuota mung dibatesi jam') with the same method as www.javascriptobfuscator.com but found nothing, so i learn how they obfuscate the JS and try to make it myself, i did it but NOT COMPLETED at all, i just make it to obfuscate string-only and maybe you still face some error here, this is alpha version, because i just take a hour to code this.

function() { var a="ABC"; var b="DEF"; alert(a+b); }

you have to select string quotes type (" or ') in order to use this (i said this is alpha version, no automatic decide), for example if u frequently use var a='ABC' u should use '%string%' option.

this is the source for reference and i hope someone will continue this before me, i'm busy about task u know!! :))

Save as "*.HTA" extension

<html>
	<head>
	<title>JS String Obfuscator</title>
		<script type='text/javascript'>
			// -- THIS IS JUST TO SET THE HTA WINDOW SIZE -- //
			sW = screen.width;
			sH = screen.height;
			window.moveTo(sW, sH);
			window.resizeTo(854, 374);
			// -- THIS IS JUST TO SET THE HTA WINDOW SIZE -- //
		</script>
		<!-- just HTA app settings -->
		<hta:application
			applicationName="JSObfuscator"
			border="thin"
			id="050100101001001111"
			innerBorder="no"
			maximizeButton="no"
			scroll="no"
			singleInstance="yes"
			version="0.5"/>
		<!-- just HTA app settings -->
		<meta http-equiv='MSThemeCompatible' content='yes'/>
	</head>
	<body topMargin='0' leftMargin='0'>
		<table width='854px' height='374px' border='1' borderColor='#808080' cellSpacing='0' cellPadding='0'>
			<tr height='344px'>
				<td align='center'>
					<textarea id='inp' cols='50' rows='20' wrap="off">function() {
	var a="ABC";
	var b="DEF";
	alert(a+b);
}</textarea>
				</td>
				<td align='center'>
					<textarea id='out' cols='50' rows='21' readOnly='true'></textarea>
				</td>
			</tr>
			<tr>
				<td align='center'>
					<input type='button' onClick='obfuscateJS();' style='width:100%;height=100%;' value='Obfuscate JS'/>
				</td>
				<td align='center'>
					<select id='sel' style='width:100%;height=100%;'>
						<option>--[select string quotes type]--</option>
						<option>" %string% "</option>
						<option>' %string% '</option>
					</select>
				</td>
			</tr>
		</table>
	</body>
	<script type='text/javascript'>
		// -- THIS IS JUST TO SET THE HTA WINDOW SIZE -- //
		iW = (854 + (854 - document.body.offsetWidth));
		iH = (374 + (374 - document.body.offsetHeight));
		window.resizeTo(iW, iH);
		window.moveTo(((sW - iW) / 2), ((sH - iH) / 2));
		// -- THIS IS JUST TO SET THE HTA WINDOW SIZE -- //

		sel.selectedIndex = 1;

		function obfuscateJS() {
			if (sel.selectedIndex == 0) { //set the quotes
				alert("select string quotes!");
				return;
			} else if (sel.selectedIndex == 1) {
				qts = '"';
			} else {
				qts = "'";
			}
			var txt = inp.value;
			var tmp = txt;
			var vrb = "_0xf41d=[" //create an array for obfuscate
			var arr = new Array(); //new unlimited array
			var nmb = 0; //this is array number in obfscated JS
			while (tmp.search(qts) != -1) { //if found any quotes
				if (sel.selectedIndex == 1) {
					arr[nmb] = tmp.match(/"([^"]+)"/)[1]; //get string inside ""
				} else {
					arr[nmb] = tmp.match(/'([^']+)'/)[1]; //get string inside ''
				}
				for (var i = 0; i <= 1; i++) { //replace only 2 quotes
					tmp = tmp.replace(qts, '');
				}
				txt = txt.replace(qts + arr[nmb] + qts, '_0xf41d[' + nmb + "]"); //replace string as array call _0xf41d[ArrNum]
				nmb += 1;
			}
			for (var i = 0; i < arr.length; i++) {
				vrb += '"' + toHex(arr[i]) + '",'; //convert a char to hex
			}
			vrb = vrb.substr(0, vrb.length - 1) + "];";
			out.value = (vrb + txt).replace(/(?:\r\n|\r|\n)/g, ';').replace(/(?:\r\t|\r|\t)/g, '').replace('_0xf41d=];', ''); //replace enter, tab, and incomplete array _0xf41d=];
			out.value = out.value.replace(/;;|{;|};/g, function(x){return x.substring(0, 1);}); //replace {; }; ;; wtih that first substring(0,1)
		}

		function toHex(str) { //convert to hex with \xHEX return
			var hex = "";
			for (var i = 0; i < str.length; i++) {
			hex += '\\x' + str.charCodeAt(i).toString(16);
			}
			return hex;
		}
	</script>
</html>

4 comments:

AnonymousMay 17, 2016 at 2:36 AM
Hola. Terminaste el codigo? Te estaria enormemente agradecido, no encuentro nada que funcione offline que merezca la pena, salvo lo que tu has empezado.
Un saludo
NoBeLApril 24, 2019 at 10:11 PM
Cool, I will try to modify with your credit ...
AnonymousOctober 24, 2024 at 6:45 AM
Thank You and that i have a dandy proposal: Where To Start Renovating House top home renovation companies

Faid's Blog™

My Blog Menu

Thursday, March 12, 2015

Offline Javascript Obfuscator

4 comments: