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‎.gitignore

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vendor

‎LICENSE

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‎README.md

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# EnPHP Decoder
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## Installation & Usage
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```bash
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git clone https://github.com/ganlvtech/php-enphp-decompiler.git
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cd php-enphp-decompiler
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composer install
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php bin/decode.php tests/assets/admin.php output.php
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```
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## License
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EnPHP Decoder
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Copyright (C) 2019 Ganlv
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.

‎bin/decode.php

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<?php
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/**
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* EnPHP Decoder
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*
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* https://github.com/ganlvtech/php-enphp-decompiler
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*
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* Copyright (C) 2019 Ganlv
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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require __DIR__ . '/../vendor/autoload.php';
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$code = file_get_contents($argv[1]);
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$decoded = \Ganlv\EnphpDecoder\AutoDecoder::decode($code);
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echo $decoded;
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file_put_contents($argv[2], $decoded);

‎composer.json

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{
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"name": "ganlvtech/php-enphp-decoder",
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"license": "GPL-3.0",
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"authors": [
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{
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"name": "Ganlv",
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"email": "[email protected]"
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}
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],
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"autoload": {
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"psr-4": {
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"Ganlv\\EnphpDecoder\\": "src"
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}
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},
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"require": {
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"ext-zlib": "*",
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"nikic/php-parser": "^4.2"
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}
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}

‎composer.lock

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‎src/AutoDecoder.php

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<?php
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/**
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* EnPHP Decoder
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*
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* https://github.com/ganlvtech/php-enphp-decompiler
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*
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* Copyright (C) 2019 Ganlv
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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namespace Ganlv\EnphpDecoder;
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use Ganlv\EnphpDecoder\NodeVisitors\BeautifyNodeVisitor;
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use Ganlv\EnphpDecoder\NodeVisitors\FindAndRemoveGlobalVariableNameNodeVisitor;
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use Ganlv\EnphpDecoder\NodeVisitors\FunctionGlobalStringNodeVisitor;
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use Ganlv\EnphpDecoder\NodeVisitors\FunctionLikeNodeVisitor;
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use Ganlv\EnphpDecoder\NodeVisitors\FunctionLocalVariableRenameNodeVisitor;
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use Ganlv\EnphpDecoder\NodeVisitors\GlobalStringNodeVisitor;
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use Ganlv\EnphpDecoder\NodeVisitors\RemoveDefineGlobalVariableNameNodeVisitor;
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use Ganlv\EnphpDecoder\NodeVisitors\RemoveUnusedConstFetchNodeVisitor;
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use PhpParser\Error;
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use PhpParser\NodeTraverser;
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use PhpParser\ParserFactory;
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use PhpParser\PrettyPrinter\Standard;
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class AutoDecoder
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{
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protected $ast;
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protected $globalVarName;
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protected $delimiter;
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protected $data;
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protected $start;
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protected $length;
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protected $stringArray;
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public function __construct($ast)
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{
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$this->ast = $ast;
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}
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public static function parseFile($code)
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{
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$parser = (new ParserFactory())->create(ParserFactory::PREFER_PHP7);
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$ast = $parser->parse($code);
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return $ast;
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}
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public function findAndRemoveGlobalVariableName()
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{
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$nodeVisitor = new FindAndRemoveGlobalVariableNameNodeVisitor();
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$this->ast = $traverser->traverse($this->ast);
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$this->globalVarName = $nodeVisitor->globalVarName;
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$this->delimiter = $nodeVisitor->delimiter;
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$this->data = $nodeVisitor->data;
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$this->start = $nodeVisitor->start;
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$this->length = $nodeVisitor->length;
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return $this->ast;
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}
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public function removeDefineGlobalVariableName()
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{
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$nodeVisitor = new RemoveDefineGlobalVariableNameNodeVisitor($this->globalVarName);
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$this->ast = $traverser->traverse($this->ast);
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$this->stringArray = explode($this->delimiter, gzinflate(substr($this->data, $this->start, $this->length)));
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return $this->ast;
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}
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public function removeUnusedConstFetchNodeVisitor()
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{
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$nodeVisitor = new RemoveUnusedConstFetchNodeVisitor();
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$this->ast = $traverser->traverse($this->ast);
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return $this->ast;
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}
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public function replaceGlobalString()
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{
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$nodeVisitor = new GlobalStringNodeVisitor($this->globalVarName, $this->stringArray);
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$this->ast = $traverser->traverse($this->ast);
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return $this->ast;
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}
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public function replaceFunctionLikeGlobalString()
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{
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$globalVarName = $this->globalVarName;
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$stringArray = $this->stringArray;
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$nodeVisitor = new FunctionLikeNodeVisitor(function ($node) use ($globalVarName, $stringArray) {
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/** @var $node \PhpParser\Node\Stmt\Function_ */
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$nodeVisitor = new FunctionGlobalStringNodeVisitor($globalVarName, $stringArray);
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$node->stmts = $traverser->traverse($node->stmts);
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return null;
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});
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$this->ast = $traverser->traverse($this->ast);
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return $this->ast;
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}
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public function renameFunctionLocalLikeVariable()
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{
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$nodeVisitor = new FunctionLikeNodeVisitor(function ($node) {
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/** @var $node \PhpParser\Node\Stmt\Function_ */
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$nodeVisitor = new FunctionLocalVariableRenameNodeVisitor();
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$ast = $traverser->traverse([$node]);
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return $ast[0];
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});
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$this->ast = $traverser->traverse($this->ast);
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return $this->ast;
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}
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public function beautify()
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{
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$nodeVisitor = new BeautifyNodeVisitor();
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$traverser = new NodeTraverser();
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$traverser->addVisitor($nodeVisitor);
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$this->ast = $traverser->traverse($this->ast);
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return $this->ast;
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}
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public function prettyPrintFile()
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{
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$prettyPrinter = new Standard();
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return $prettyPrinter->prettyPrintFile($this->ast);
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}
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public static function decode($code)
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{
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try {
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$ast = self::parseFile($code);
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} catch (Error $error) {
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return '';
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}
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$decoder = new self($ast);
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$decoder->findAndRemoveGlobalVariableName();
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$decoder->removeDefineGlobalVariableName();
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$decoder->removeUnusedConstFetchNodeVisitor();
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$decoder->replaceGlobalString();
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$decoder->replaceFunctionLikeGlobalString();
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$decoder->renameFunctionLocalLikeVariable();
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$decoder->beautify();
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return $decoder->prettyPrintFile();
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}
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}

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