jianshu

下面讲解需要更改的源码和操作步骤：

修改wxappUnpacker中wuWxss.js部分代码，具体如下：

functionrunVM(name,code){

    let wxAppCode={},handle={cssFile:name};

    let vm=new VM({sandbox:Object.assign(new GwxCfg(),{__wxAppCode__:wxAppCode,setCssToHead:cssRebuild.bind(handle)})});

    vm.run(code);

    for(let name in wxAppCode)if(name.endsWith(".wxss")){

        handle.cssFile=path.resolve(frameName,"..",name);

        wxAppCode[name]();

    }

}

修改为

functionrunVM(name,code){

    let wxAppCode={},handle={cssFile:name};

    let gg = new GwxCfg();

    let tsandbox ={$gwx:GwxCfg.prototype["$gwx"],__mainPageFrameReady__:GwxCfg.prototype["$gwx"],__wxAppCode__:wxAppCode,setCssToHead:cssRebuild.bind(handle)};

    let vm = new VM({sandbox:tsandbox});

    vm.run(code);

    for(let name in wxAppCode)if(name.endsWith(".wxss")){

        handle.cssFile=path.resolve(frameName,"..",name);

        wxAppCode[name]();

    }

}

问题完美解决

由于大神qwerty472123代码的一些bug会导致报错：

 __vd_version_info__ is not defined

具体:

D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\node_modules\vm2\lib\main.js:224

                        throwthis._internal.Decontextify.value(e);

                        ^

ReferenceError:__vd_version_info__ is not defined

    at vm.js:3:3

    at Script.runInContext (vm.js:130:20)

    at VM.run(D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\node_modules\vm2\lib\main

.js:218:62)

    at runVM (D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\wuWxss.js:69:6)

    at runOnce(D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\wuWxss.js:86:27)

    at Array.preRun(D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\wuWxss.js:166:5)

    at CntEvent.decount (D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\wuLib.js:17:43)

    at ioLimit.runWithCb.err(D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\wuLib.js:7

3:11)

    at agent(D:\xiaochengxu\my_test_decompiler\wxappUnpacker-master\wuLib.js:54:14)

at FSReqWrap.args [as oncomplete] (fs.js:140:20)

解决方案：

wuWxss.jss找到函数wu.scanDirByExt内部的代码

code=code.slice(code.indexOf('var setCssToHead = function(file, _xcInvalid'));

code=code.slice(code.indexOf('\nvar _C= ')+1);

let oriCode=code;

code=code.slice(0,code.indexOf('\n'));

let vm=new VM({sandbox:{}});

pureData=vm.run(code+"\n_C");

let mainCode=oriCode.slice(oriCode.indexOf("setCssToHead"),oriCode.lastIndexOf(";var __pageFrameEndTime__"));

然后将其替换成：

code = code.replace(/display:-webkit-box;display:-webkit-flex;/gm, '');

let scriptCode = code;

//extract script content from html

if (frameFile.endsWith(".html")) {

    try {

        const $ = cheerio.load(code);

        scriptCode = [].join.apply($('html').find('script').map(function (item) {

            return $(this).html();

        }, "\n"));

    } catch (e) {

        //ignore

    }

}

let window = {

    screen: {

        width: 720,

        height: 1028,

        orientation: {

            type: 'vertical'

        }

    }

};

let navigator = {

    userAgent: "iPhone"

};

scriptCode = scriptCode.slice(scriptCode.lastIndexOf('window.__wcc_version__'));

let mainCode = 'window= ' + JSON.stringify(window) +

    ';\nnavigator=' + JSON.stringify(navigator) +

    ';\nvar __mainPageFrameReady__ = window.__mainPageFrameReady__ || function(){};var __WXML_GLOBAL__={entrys:{},defines:{},modules:{},ops:[],wxs_nf_init:undefined,total_ops:0};var __vd_version_info__=__vd_version_info__||{}' +

    ";\n" + scriptCode;

//remove setCssToHead function

mainCode = mainCode.replace('var setCssToHead = function', 'var setCssToHead2 = function');

code = code.slice(code.lastIndexOf('var setCssToHead = function(file, _xcInvalid'));

code = code.slice(code.lastIndexOf('\nvar _C= ') + 1);

code = code.slice(0, code.indexOf('\n'));

let vm = new VM({sandbox: {}});

pureData = vm.run(code + "\n_C");

这样问题就能完美解决。

考虑到大神wxappUnpacker项目中仍然有很多bug（包含但不限于结构设计上的不合理），建议采用下面的项目进行反编译，我修复了wxappUnpacker项目中的一些bug（包含但不限于$gwx is not defined 和__vd_version_info__ is not defined，并且它支持分包）

有的朋友使用了上面代码又碰到其他的bug，建议使用下面“分包的实现”项目，将项目下载下来，然后在自己电脑上安装 git bash ，运行命令：

1：解包主包 ./bingo.sh testpkg/master-xxx.wxapkg

2：解包子包 ./bingo.sh testpkg/sub-1-xxx.wxapkg -s=../master-xxx

分包的实现：https://github.com/Toruk-Makto66/wxappUnpacker/tree/master