├── LICENSE ├── README.md └── index.php /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | 676 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # javascript-de-obfuscator 2 | 3 | [![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=D8LQ4XTBLV3C4&lc=CZ&item_number=SalamekPplMyApi¤cy_code=EUR) 4 | 5 | Javascript DE-Obfuscator used to deobfuscate JS generated by javascriptobfuscator.com 6 | -------------------------------------------------------------------------------- /index.php: -------------------------------------------------------------------------------- 1 | content = $content; 9 | } 10 | 11 | function decode_crap($code) 12 | { 13 | return preg_replace_callback( 14 | "/\\\(x)?([0-9a-f]{2,3})/i", 15 | function($m){ 16 | return chr($m[1] ? hexdec($m[2]) : octdec($m[2])); 17 | }, 18 | $code 19 | ); 20 | } 21 | 22 | 23 | private function findListName() 24 | { 25 | $reg = '/var\s+(\S+)(?:\s+|)=(?:\s+|)\[/i'; 26 | $matches = array(); 27 | preg_match($reg, $this->content, $matches); 28 | if (count($matches) != 2) 29 | { 30 | throw new Exception('List Name not found, it should be on start of script, eg var _0xfe5b='); 31 | } 32 | 33 | return trim($matches[1]); 34 | } 35 | 36 | private function parseList($listName) 37 | { 38 | $reg = '/var\s'.$listName.'(?:\s|.)?=(?:\s|.)?\[(.+)\];/i'; 39 | $matches = array(); 40 | preg_match($reg, $this->content, $matches); 41 | 42 | if (count($matches) != 2) 43 | { 44 | throw new Exception('List not found, it should be on start of script, eg var _0xfe5b=["mess"]'); 45 | } 46 | 47 | $items = explode(',', $matches[1]); 48 | foreach ($items AS &$item) 49 | { 50 | $item = $this->decode_crap(str_replace('"', '',trim($item))); 51 | } 52 | 53 | return $items; 54 | } 55 | 56 | private function decode($list, $listName) 57 | { 58 | # Decode from list 59 | $reg = '/'.$listName.'\[(\d*)\]/i'; 60 | $matches = array(); 61 | preg_match_all($reg, $this->content, $matches); 62 | 63 | $content = $this->content; 64 | 65 | foreach($matches[0] AS $k => $name) 66 | { 67 | $content = str_replace($name, '\''.$list[$matches[1][$k]].'\'', $content); 68 | } 69 | 70 | #Decode function calling ['trigger'] -> .trigger 71 | $reg = '/\[\'(.+?)\'\]/i'; 72 | $matches = array(); 73 | preg_match_all($reg, $content, $matches); 74 | 75 | 76 | foreach($matches[0] AS $k => $name) 77 | { 78 | $content = str_replace($name, '.'.$matches[1][$k], $content); 79 | } 80 | 81 | #Remove list from string 82 | $reg = '/var\s'.$listName.'(?:\s|.)?=(?:\s|.)?\[(.+)\];/i'; 83 | $content = preg_replace($reg, '', $content); 84 | 85 | #Decode any crap in the code 86 | $content = $this->decode_crap($content); 87 | 88 | return $content; 89 | } 90 | 91 | 92 | public function decompile() 93 | { 94 | $listName = $this->findListName(); 95 | $list = $this->parseList($listName); 96 | 97 | return $this->decode($list, $listName); 98 | } 99 | } 100 | 101 | $obfuscated = 'var _0xfe5b=["\x53\x61\x79\x48\x65\x6C\x6C\x6F","\x47\x65\x74\x43\x6F\x75\x6E\x74","\x4D\x65\x73\x73\x61\x67\x65\x20\x3A\x20","\x59\x6F\x75\x20\x61\x72\x65\x20\x77\x65\x6C\x63\x6F\x6D\x65\x2E"];function NewObject(_0x24c9x2){var _0x24c9x3=0;this[_0xfe5b[0]]=function(_0x24c9x4){_0x24c9x3++;alert(_0x24c9x2+_0x24c9x4);};this[_0xfe5b[1]]=function(){return _0x24c9x3};}var obj= new NewObject(_0xfe5b[2]);obj.SayHello(_0xfe5b[3]);'; 102 | $deobfuscated = ''; 103 | $error = ''; 104 | if (isset($_POST) && array_key_exists('obfuscated', $_POST)) 105 | { 106 | try 107 | { 108 | $obfuscated = $_POST['obfuscated']; 109 | $deo = new deo($obfuscated); 110 | 111 | $deobfuscated = $deo->decompile(); 112 | } 113 | catch (Exception $ex) 114 | { 115 | $error = $ex->getMessage(); 116 | } 117 | 118 | } 119 | 120 | 121 | 122 | ?> 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | Javascript DE-Obfuscator 137 | 138 | 139 | 140 | 141 | 142 | 148 | 149 | 150 | 151 | 155 | 156 | 157 | 158 | 159 | 160 | 161 |
162 | '.$error.'
'; 166 | } 167 | ?> 168 |
169 |
170 |

Javascript DE-Obfuscator (of javascriptobfuscator.com)

171 |
172 |
173 |
174 |
175 |
176 | 177 | RUN! 178 |
179 |
180 | 181 |
182 |
183 | 184 | RUN! 185 |
186 |
187 |
188 |
189 |
190 |

This Javascript DE-Obfuscator is created for deobfuscation of code generated by javascriptobfuscator.com.

191 |

Source on https://github.com/Salamek/javascript-de-obfuscator.

192 |

I'm unable to recover variable names (information is lost by obfuscation), that is on you. You also need some 3rd party tool to fix indentation.

193 |
194 |
195 | 196 | 197 | 198 | 199 | 200 | 201 | 202 | 203 | 204 | 205 | 206 | 213 | 214 | 215 | 216 | 217 | --------------------------------------------------------------------------------