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这篇文章主要介绍了php微信小程序解包过程实例详解,本文通过实例代码给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下
这个解包只能看个大概
1、找到小程序压缩包
1.1、手机root或安装模拟器(我用的是夜神)
1.2、在模拟器上安装微信(用android5系统的模拟器，低版本小程序容易打不开)
1.3、打开登陆微信后，打开小程序
1.4、打开模拟器自带的文件管理器来到目录：/data/data/com.tencent.mm/MicroMsg/{{一串32位的16进制字符串文件夹}}/appbrand/pkg/
1.5、里面有很多wxapkg文件，找到最新修改日期的文件比如 -357038350_91.wxapkg，前面打勾选中
1.6、文件管理器回到/mnt/shared/Other目录，粘贴即可，打开安卓模拟器上我的电脑 =〉打开电脑文件夹找到粘贴的文件-357038350_91.wxapkg 夜神教程链接：跳转查看
2、对压缩包解包
详细参考：https://codechina.csdn.net/mirrors/leo9960/wechat-app-unpack?utm_source=csdn_github_accelerator
我用的php类：
使用方法：cmd =>cd php文件目录 =〉php wx_unpak.php 357038350_91.wxapkg
我主要是想用其中的一些图片，很多图片都被base64了放到js(app-service.js)和样式(app-wxss.js)文件中了；需要我们匹配组装一下
<?php$str = file_get_contents('_-357038350_97.wxapkg.unpacked/app-service.js');$preg = '/(data:image.*?)\"/';$len = strlen('data:image/png;base64,');if(preg_match_all($preg, $str, $arr)){ foreach($arr[1] as $k => $img){ file_put_contents('./images/'.$k.'.png',base64_decode(substr($img,$len))); //echo substr($img,$len);exit; }} else { echo 'no';}$str = file_get_contents('_-357038350_97.wxapkg.unpacked/app-wxss.js');$preg = '/\((data:image.*?)\)/';$len = strlen('data:image/png;base64,');if(preg_match_all($preg, $str, $arr)){ foreach($arr[1] as $k => $img){ file_put_contents('./images/a2_'.$k.'.png',base64_decode(substr($img,$len))); //echo substr($img,$len);exit; }} else { echo 'no';}wx_unpak.php
<?php/** * 源文件目录 * /data/data/com.tencent.mm/MicroMsg/{{一串32位的16进制字符串文件夹}}/appbrand/pkg/ * /data/data/com.eg.android.AlipayGphone, 在files/nebulaInstallApps/目录下存储了所有加载过的小程序 * [php] /path/to/unpack-wxapkg.php <xxx.wxapkg> * php unpak.php _1123949441_351.wxapkg **/function unpack_wxapkg($file, $targetDir){ if (!is_dir($targetDir)){ mkdir($targetDir); } echo "Reading file.\n"; $file = file_get_contents($file); $ptr = 18; $headerStruct = new StructDef([ 'mask1' => 'ushort', 'info1' => 'ulong', 'indexInfoLength' => 'ulong', 'bodyInfoLength' => 'ushort', 'mask2' => 'ushort', 'fileCount' => 'ulong', ]); echo "Parsing file header...\n"; $header = $headerStruct->unpack($file); // print_r(['header' => $header]); $unpackULong = function () use (&$file, &$ptr) { $ret = unpack_ulong(substr($file, $ptr, 4)); $ptr += 4; return $ret; }; $unpackUShort = function () use (&$file, &$ptr) { $ret = unpack_ushort(substr($file, $ptr, 2)); $ptr += 2; return $ret; }; $unpackStr = function ($len) use (&$file, &$ptr) { $ret = substr($file, $ptr, $len); $ptr += $len; return $ret; }; $fileCount = $header['fileCount']; echo "Got $fileCount files.\n"; $unpackedFiles = []; for ($i = 0; $i < $fileCount; $i++) { $nameLength = $unpackULong(); $f = [ 'nameLength' => $nameLength, 'name' => $unpackStr($nameLength), 'offset' => $unpackULong(), 'size' => $unpackULong(), ]; echo "Unpacking file {$f['name']} ({$f['size']}bytes)...\n"; $f['content'] = substr($file, $f['offset'], $f['size']); $unpackedFiles[] = $f; $destFile = $targetDir . $f['name']; $destDir = dirname($destFile); if (!is_dir($destDir)){ mkdir($destDir, 0777, true); } file_put_contents($targetDir . $f['name'], $f['content']); } // print_r(['unpackedFiles' => $unpackedFiles]); echo "All done.\n";}function unpack_ulong($str){ $x = unpack('N', $str); return $x[1];}function unpack_ushort($str){ $x = unpack('n', $str); return $x[1];}class StructDef{ protected $def; protected $unpackFormat; public function __construct($def) { $this->def = $def; $this->unpackFormat = self::convertStructDefToUnpackFormat($def); } public function unpack($data) { return unpack($this->unpackFormat, $data); } protected static function convertStructDefToUnpackFormat($def) { $defTypeToUnpackType = [ 'byte' => 'C', 'uchar' => 'C', 'u8' => 'C', 'ushort' => 'n', 'u16' => 'n', 'ulong' => 'N', 'u32' => 'N', ]; $ret = []; foreach ($def as $key => $type) { $ret[] = $defTypeToUnpackType[$type] . $key; } return implode('/', $ret); }}$packageFile = $argv[1];//支持目录下文件批量解压if (is_dir($packageFile)){ $handle = opendir($packageFile); if($handle){ while(($fl = readdir($handle)) !== false){ $temp = $packageFile.DIRECTORY_SEPARATOR.$fl; //如果不加 $fl!='.' && $fl != '..' 则会造成把$dir的父级目录也读取出来 if(is_file($temp)){ if($fl!='.' && $fl != '..'){ $targetDir = $temp . '.unpacked'; unpack_wxapkg($temp, $targetDir); } } } } }else if (is_file($packageFile)){ $targetDir = $packageFile . '.unpacked'; unpack_wxapkg($packageFile, $targetDir);}else{ echo <<<HELPUsage: [php] {$argv[0]} <xxx.wxapkg> - Unpack the `xxx.wxapkg` to `xxx.wxapkg.unpacked` directory.HELP; exit(1);}exit(0);