obfuscated.js

.gitignore

node_modules/

brute.js

#!/usr/bin/env node

(new (require('argf'))()).forEach(function(line) {
  input = line.slice(0,-1)
  console.log(ascii_one(input))
})

function simpleHash(str){
  var i,hash=0;
  for(i=0;
      i<str.length;
      i++){
        hash+=(str[i].charCodeAt()*(i+1))
      }
      return Math.abs(hash)%31337
}
function ascii_one(foo){
  foo=foo.charAt(0);
  var i;
  for(i=0;
      i<256;
      ++i){
        var hex_i=i.toString(16);
        if(hex_i.length==1)hex_i="0"+hex_i;
        hex_i="%"+hex_i;
        hex_i=unescape(hex_i);
        if(hex_i==foo)break
      }
    return i
}
function numerical_value(str){
  var i,a=0,b;
  for(i=0;
      i<str.length;
      ++i){
        b=ascii_one(str.charAt(i));
        a+=b*(i+1)
      }
      return a
}
function encrypt(val){
  var res;
  res=numerical_value(val);
  res=res*(3+1+3+3+7);
  res=res>>>6;
  res=res/4;
  res=res^4153;
  if(res==0){
    return true;
  }
}

deob.js

function simpleHash(str){
  var i,hash=0;
  for(i=0;
      i<str.length;
      i++){
        hash+=(str[i].charCodeAt()*(i+1))
      }
      return Math.abs(hash)%31337
}
function ascii_one(foo){
  foo=foo.charAt(0);
  var i;
  for(i=0;
      i<256;
      ++i){
        var hex_i=i.toString(16);
        if(hex_i.length==1)hex_i="0"+hex_i;
        hex_i="%"+hex_i;
        hex_i=unescape(hex_i);
        if(hex_i==foo)break
      }
    return i
}
function numerical_value(str){
  var i,a=0,b;
  for(i=0;
      i<str.length;
      ++i){
        b=ascii_one(str.charAt(i));
        a+=b*(i+1)
      }
      return a
}
function encrypt(form){
  var res;
  res=numerical_value(form.password.value);
  res=res*(3+1+3+3+7);
  res=res>>>6;
  res=res/4;
  res=res^4153;
  if(res!=0){
    alert('Invalid password!')
  }
  else{
    alert('Correct password :)')
  }
  form.key.value=numerical_value(form.password.value);
  form.verification.value="yes"+simpleHash(form.password.value);
  return true
}

obfuscated.js

var _0x52ae=[
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  "\x7C","\x73\x70\x6C\x69\x74",
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  "","\x66\x72\x6F\x6D\x43\x68\x61\x72\x43\x6F\x64\x65","\x72\x65\x70\x6C\x61\x63\x65","\x5C\x77\x2B","\x5C\x62","\x67"
];

eval(
  function (_0x7038x1,_0x7038x2,_0x7038x3,_0x7038x4,_0x7038x5,_0x7038x6){

  _0x7038x5=function (_0x7038x3){

    return (
      _0x7038x3<_0x7038x2?_0x52ae[4]:_0x7038x5(
        parseInt(_0x7038x3/_0x7038x2)
    )
    )+((_0x7038x3=_0x7038x3%_0x7038x2)>35?String[_0x52ae[5]](_0x7038x3+29):_0x7038x3.toString(36)
      );
  } ;
  if(!_0x52ae[4][_0x52ae[6]](/^/,String)){
    while(_0x7038x3--){
      _0x7038x6[_0x7038x5(_0x7038x3)]=_0x7038x4[_0x7038x3]||_0x7038x5(_0x7038x3);
    } ;
    _0x7038x4=[function (_0x7038x5){
      return _0x7038x6[_0x7038x5];
    } ];

    _0x7038x5=function (){

      return _0x52ae[7];
    } ;
    _0x7038x3=1;
  } ;
  while(_0x7038x3--){
    if(_0x7038x4[_0x7038x3]){
      _0x7038x1=_0x7038x1[_0x52ae[6]]( new RegExp(_0x52ae[8]+_0x7038x5(_0x7038x3)+_0x52ae[8],_0x52ae[9]),_0x7038x4[_0x7038x3]);
    } ;
  } ;
  return _0x7038x1;
}
(_0x52ae[0],46,46,_0x52ae[3][_0x52ae[2]](_0x52ae[1]),0,{ })
);

package.json

{
  "dependencies": {
    "argf": "*"
  }
}