微信小程序反编译

1. 下载这位大神的开源项目:https://github.com/qwerty472123/wxappUnpacker.git ,要是啥也没看到注意选择分支试试

2. 使用root后的android手机或模拟器,安装微信并运行一下小程序,在目录“/data/data/com.tencent.mm/MicroMsg/{User}/appbrand/pkg”中找到对应的.wxapkg文件,对应哪一个文件就根据文件修改时间看吧

3. 在项目根目录下安装依赖:

npm install esprima
npm install css-tree
npm install cssbeautify
npm install vm2
npm install uglify-es
npm install js-beautify
npm install escodegen

 4. 

node wuWxapkg.js 你的wxapkg文件

 

补充,处理wxss时报错,wuWxss.js修改为如下:(参考项目中的第一个pull request)

const wu=require("./wuLib.js");
const path=require("path");
const fs=require("fs");
const {VM}=require('vm2');
const cssbeautify=require('cssbeautify');
const csstree=require('css-tree');
function doWxss(dir,cb){
	function GwxCfg(){}
	GwxCfg.prototype={$gwx(){}};
	for(let i=0;i<300;i++)GwxCfg.prototype["$gwx"+i]=GwxCfg.prototype.$gwx;
	let runList={},pureData={},result={},actualPure={},importCnt={},frameName="",onlyTest=true,blockCss=[];//custom block css file which won't be imported by others.(no extension name)
	function cssRebuild(data){//need to bind this as {cssFile:__name__} before call
		let cssFile;
		function statistic(data){
			function addStat(id){
				if(!importCnt[id])importCnt[id]=1,statistic(pureData[id]);
				else ++importCnt[id];
			}
			if(typeof data==="number")return addStat(data);
			for(let content of data)if(typeof content==="object"&&content[0]==2)addStat(content[1]);
		}
		function makeup(data){
			var isPure=typeof data==="number";
			if(onlyTest){
				statistic(data);
				if(!isPure){
					if(data.length==1&&data[0][0]==2)data=data[0][1];
					else return "";
				}
				if(!actualPure[data]&&!blockCss.includes(wu.changeExt(wu.toDir(cssFile,frameName),""))){
					console.log("Regard "+cssFile+" as pure import file.");
					actualPure[data]=cssFile;
				}
				return "";
			}
			let res=[],attach="";
			if(isPure&&actualPure[data]!=cssFile){
				if(actualPure[data])return '@import "'+wu.changeExt(wu.toDir(actualPure[data],cssFile),".wxss")+'";\n';
				else{
					res.push("/*! Import by _C["+data+"], whose real path we cannot found. */");
					attach="/*! Import end */";
				}
			}
			let exactData=isPure?pureData[data]:data;
			for(let content of exactData)
				if(typeof content==="object"){
					switch(content[0]){
					case 0://rpx
						res.push(content[1]+"rpx");
						break;
					case 1://add suffix, ignore it for restoring correct!
						break;
					case 2://import
						res.push(makeup(content[1]));
						break;
					}
				}else res.push(content);
			return res.join("")+attach;
		}
		return ()=>{
			cssFile=this.cssFile;
			if(!result[cssFile])result[cssFile]="";
			result[cssFile]+=makeup(data);
		};
	}
	function runVM(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]();
			}
		}
	}
	function preRun(dir, frameFile, mainCode, files, cb) {
		wu.addIO(cb);
		runList[path.resolve(dir, "./app.wxss")] = mainCode;
		for (let name of files) if (name != frameFile) {
			wu.get(name, code => {
				code = code.slice(0, code.indexOf("\n"));
				if (code.indexOf("setCssToHead") > -1) runList[name] = code.slice(code.indexOf("setCssToHead"));
			});
		}
	}
	function runOnce() {
		// for (let name in runList) runVM(name, runList[name]);
		for (let name in runList) {
			// console.log(name, runList[name]);
			var start = `var window = window || {}; var __pageFrameStartTime__ = Date.now(); 	var __webviewId__; 	var __wxAppCode__={}; 	var __mainPageFrameReady__ = function(){}; 	var __WXML_GLOBAL__={entrys:{},defines:{},modules:{},ops:[],wxs_nf_init:undefined,total_ops:0}; 	var __vd_version_info__=__vd_version_info__||{};	 
			
			$gwx=function(path,global){
				if(typeof global === 'undefined') global={};if(typeof __WXML_GLOBAL__ === 'undefined') {__WXML_GLOBAL__={};
				}__WXML_GLOBAL__.modules = __WXML_GLOBAL__.modules || {};
			}`;
			runVM(name, start + " \r\n" + runList[name]);
		}
	}
	function transformCss(style){
		let ast=csstree.parse(style);
		csstree.walk(ast,function(node){
			if(node.type=="Comment"){//Change the comment because the limit of css-tree
				node.type="Raw";
				node.value="\n/*"+node.value+"*/\n";
			}
			if(node.type=="TypeSelector"){
				if(node.name.startsWith("wx-"))node.name=node.name.slice(3);
				else if(node.name=="body")node.name="page";
			}
			if(node.children){
				const removeType=["webkit","moz","ms","o"];
				let list={};
				node.children.each((son,item)=>{
					if(son.type=="Declaration"){
						if(list[son.property]){
							let a=item,b=list[son.property],x=son,y=b.data,ans=null;
							if(x.value.type=='Raw'&&x.value.value.startsWith("progid:DXImageTransform")){
								node.children.remove(a);
								ans=b;
							}else if(y.value.type=='Raw'&&y.value.value.startsWith("progid:DXImageTransform")){
								node.children.remove(b);
								ans=a;
							}else{
								let xValue=x.value.children&&x.value.children.head&&x.value.children.head.data.name,yValue=y.value.children&&y.value.children.head&&y.value.children.head.data.name;
								if(xValue&&yValue)for(let type of removeType)if(xValue==`-${type}-${yValue}`){
									node.children.remove(a);
									ans=b;
									break;
								}else if(yValue==`-${type}-${xValue}`){
									node.children.remove(b);
									ans=a;
									break;
								}else{
									let mValue=`-${type}-`;
									if(xValue.startsWith(mValue))xValue=xValue.slice(mValue.length);
									if(yValue.startsWith(mValue))yValue=yValue.slice(mValue.length);
								}
								if(ans===null)ans=b;
							}
							list[son.property]=ans;
						}else list[son.property]=item;
					}
				});
				for(let name in list)if(!name.startsWith('-'))
					for(let type of removeType){
						let fullName=`-${type}-${name}`;
						if(list[fullName]){
							node.children.remove(list[fullName]);
							delete list[fullName];
						}
					}
			}
		});
		return cssbeautify(csstree.generate(ast),{indent:'    ',autosemicolon:true});
	}
	wu.scanDirByExt(dir,".html",files=>{
		let frameFile="";
		if(fs.existsSync(path.resolve(dir,"page-frame.html")))
			frameFile=path.resolve(dir,"page-frame.html");
		else if(fs.existsSync(path.resolve(dir,"app-wxss.js")))
			frameFile=path.resolve(dir,"app-wxss.js");
		else if(fs.existsSync(path.resolve(dir,"page-frame.js")))
			frameFile=path.resolve(dir,"page-frame.js");
		else throw Error("page-frame-like file is not found in the package by auto.");
		wu.get(frameFile,code=>{
			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__"));
			console.log("Guess wxss(first turn)...");
			preRun(dir,frameFile,mainCode,files,()=>{
				frameName=frameFile;
				onlyTest=true;
				runOnce();
				onlyTest=false;
				console.log("Import count info: %j",importCnt);
				for(let id in pureData)if(!actualPure[id]){
					if(!importCnt[id])importCnt[id]=0;
					if(importCnt[id]<=1){
						console.log("Cannot find pure import for _C["+id+"] which is only imported "+importCnt[id]+" times. Let importing become copying.");
					}else{
						let newFile=path.resolve(dir,"__wuBaseWxss__/"+id+".wxss");
						console.log("Cannot find pure import for _C["+id+"], force to save it in ("+newFile+").");
						id=Number.parseInt(id);
						actualPure[id]=newFile;
						cssRebuild.call({cssFile:newFile},id)();
					}
				}
				console.log("Guess wxss(first turn) done.\nGenerate wxss(second turn)...");
				runOnce()
				console.log("Generate wxss(second turn) done.\nSave wxss...");
				for(let name in result)wu.save(wu.changeExt(name,".wxss"),transformCss(result[name]));
				let delFiles={};
				for(let name of files)delFiles[name]=8;
				delFiles[frameFile]=4;
				cb(delFiles);
			});
		});
	});
}
module.exports={doWxss:doWxss};
if(require.main===module){
    wu.commandExecute(doWxss,"Restore wxss files.\n\n<dirs...>\n\n<dirs...> restore wxss file from a unpacked directory(Have page-frame.html (or app-wxss.js) and other html file).");
}