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richard512/js-packer-unpacker.htm

Created April 7, 2017 09:08
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  1. richard512 created this gist Apr 7, 2017.
    108 changes: 108 additions & 0 deletions js-packer-unpacker.htm
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    Original file line number Diff line number Diff line change
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    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <title>UnPacker</title>
    </head>
    <style> textarea {width: 100%} </style>
    <body>


    <div class="container_12">

    <div class="grid_9">

    <h3>JavaScript Packer UnPacker</h3>
    </div>
    <div class="clear"> </div>

    <div class="grid_7">
    <p>
    <label>
    <textarea name="input" id="input" cols="60" rows="10">eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('(0(){4 1="5 6 7 8";0 2(3){9(3)}2(1)})();',10,10,'function|b|something|a|var|some|sample|packed|code|alert'.split('|'),0,{}))</textarea>
    </label>
    </p>
    <p>
    <label>
    <input type="button" name="unpack" id="unpack" value="UnPack">
    </label>
    <label>
    <input type="button" name="clear" id="clear" value="Clear ">
    </label>
    </p>
    <p>
    <label>
    <textarea name="out" id="out" cols="60" rows="10"></textarea>
    </label>
    </p>

    </div>
    <div class="grid_5">

    <script src="https://code.jquery.com/jquery-3.1.0.js"></script>
    <script>
    //////////////////////////////////////////
    // Un pack the code from the /packer/ //
    // By [email protected] //
    // http://matthewfl.com/unPacker.html //
    //////////////////////////////////////////
    // version 1.2


    function unPack (code) {
    function indent (code) {
    try {
    var tabs = 0, old=-1, add='';
    for(var i=0;i<code.length;i++) {
    if(code[i].indexOf("{") != -1) tabs++;
    if(code[i].indexOf("}") != -1) tabs--;

    if(old != tabs) {
    old = tabs;
    add = "";
    while (old > 0) {
    add += "\t";
    old--;
    }
    old = tabs;
    }

    code[i] = add + code[i];
    }
    } finally {
    tabs = null;
    old = null;
    add = null;
    }
    return code;
    }

    var env = {
    eval: function (c) {
    code = c;
    },
    window: {},
    document: {}
    };

    eval("with(env) {" + code + "}");

    code = (code+"").replace(/;/g, ";\n").replace(/{/g, "\n{\n").replace(/}/g, "\n}\n").replace(/\n;\n/g, ";\n").replace(/\n\n/g, "\n");

    code = code.split("\n");
    code = indent(code);

    code = code.join("\n");
    return code;
    }
    $("#unpack").click(function () {
    $("#out").val(unPack($("#input").val()));
    });
    $("#clear").click(function () {
    $("textarea").val('');
    });
    </script>

    </body>
    </html>