基于xposed Hook框架实现个人免签支付方案

我的个人网站如何实现支付功能？

　　想必很多程序员都有过想开发一个自己的网站来获得一些额外的收入，但做这件事会遇到支付这个问题。目前个人网站是无法实现支付功能的。

　　今天我就给大家分享一下我的实现方案：《基于xposed逆向微信、支付宝、云闪付来实现个人免签支付方案》

测试页面(点我)

　　接下来给大家简单分享一下实现过程，这个过程其实是非常复杂的，关键点在于如何逆向微信支付宝云闪付这些App，找到核心函数钩子，然后写一个hook程序来模拟调用这些方法，来实现根据服务端传过来的金额，订单号自动调用微信支付宝生成支付二维码的函数得到相对应的支付二维码再传给服务端，然后监听微信支付宝的支付成功消息最终回调给服务端实现支付成功通知。这里面用到的核心技术点有：xposed逆向框架、apk反编译，网络抓包，apk动态调试等技术。

　　像微信支付宝这些apk反编译后的代码基本上都是天书一样的，严重混淆过的代码。想从中找到核心代码并非易事，下面我贴一些核心代码吧。

hook微信二维码生成函数

private void hookQRCreat(final ClassLoader appClassLoader, final Context context) {
            Class<?> clazz = XposedHelpers.findClass("com.tencent.mm.plugin.collect.b.s", appClassLoader);
        XposedBridge.hookAllMethods(clazz, "a", new XC_MethodHook() {
            @Override
            protected void beforeHookedMethod(MethodHookParam param)
                    throws Throwable {
            }

            @Override
            protected void afterHookedMethod(MethodHookParam param) {
                try {
                    LogUtils.log("hookQRCreat start:");
                    QrBean qrBean = new QrBean();
                    qrBean.setChannel(QrBean.WECHAT);

                    Field moneyField = XposedHelpers.findField(param.thisObject.getClass(), "kcp");
                    Double money = (Double) moneyField.get(param.thisObject);
                    LogUtils.log("hookQRCreat money:"+money.toString());
                    Field markField = XposedHelpers.findField(param.thisObject.getClass(), "desc");
                    String mark = (String) markField.get(param.thisObject);
                    LogUtils.log("hookQRCreat mark:"+mark);
                    Field payurlField = XposedHelpers.findField(param.thisObject.getClass(), "kco");
                    String payurl = (String) payurlField.get(param.thisObject);
                    LogUtils.log("hookQRCreat payurl:"+payurl);

                    qrBean.setMark_sell(mark);
                    qrBean.setUrl(payurl);

                    LogUtils.log( "com.tencent.mm.plugin.collect.b.s qrBean:"+ JSON.toJSONString(qrBean));
                    Intent broadCastIntent = new Intent();
                    broadCastIntent.putExtra("data", qrBean.toString());
                    broadCastIntent.setAction(HookMain.RECEIVE_QR_WECHAT);
//                broadCastIntent.setComponent( new ComponentName( "com.sjk.tpay" ,
//                        "com.sjk.tpay.ReceiverMain") );
                    context.sendBroadcast(broadCastIntent);
                    LogUtils.log("hookQRCreat end:"+JSON.toJSONString(param));
                }catch (Exception e){
                    LogUtils.log("hookQRCreat exception:"+Log.getStackTraceString(e));
                }
            }
        });
    }

hook支付宝二维码生成函数

private void hookQRCreat(final ClassLoader appClassLoader, final Context context) {
        XposedHelpers.findAndHookMethod("com.alipay.mobile.payee.ui.PayeeQRSetMoneyActivity", appClassLoader, "a",
                XposedHelpers.findClass("com.alipay.transferprod.rpc.result.ConsultSetAmountRes", appClassLoader), new XC_MethodHook() {
                    @Override
                    protected void afterHookedMethod(MethodHookParam param) throws Throwable {

                        Field moneyField = XposedHelpers.findField(param.thisObject.getClass(), "g");
                        String money = (String) moneyField.get(param.thisObject);

                        Field markField = XposedHelpers.findField(param.thisObject.getClass(), "c");
                        Object markObject = markField.get(param.thisObject);
                        String mark = (String) XposedHelpers.callMethod(markObject, "getUbbStr");

                        Object consultSetAmountRes = param.args[0];
                        Field consultField = XposedHelpers.findField(consultSetAmountRes.getClass(), "qrCodeUrl");
                        String payurl = (String) consultField.get(consultSetAmountRes);

                        Field consultField2 = XposedHelpers.findField(consultSetAmountRes
                                .getClass(), "printQrCodeUrl");
                        String payurloffline = (String) consultField2.get(consultSetAmountRes);

                        QrBean qrBean = new QrBean();
                        qrBean.setChannel(QrBean.ALIPAY);
                        qrBean.setMark_sell(mark);
                        qrBean.setUrl(payurl);

                        Intent broadCastIntent = new Intent()
                                .putExtra("data", qrBean.toString())
                                .setAction(RECEIVE_QR_ALIPAY);
                        context.sendBroadcast(broadCastIntent);
                    }
                });
    }

hook云闪付二维码生成函数

public static void GenQrCode(final String paramString1, final String paramString2, final String bankName, final String bankNo) {
        new Thread(new Runnable() {
            public void run() {
                try {
                    Object obj1 = paramString2;
                    Object obj2 = new BigDecimal(paramString1);
                    obj2 = ((BigDecimal) obj2).setScale(2, RoundingMode.HALF_UP).toPlainString().replace(".", "");
//                    LogUtils.getInstance().saveLog("GenQrCode begin ：" + obj1 + obj2);
                    Object obj3 = new StringBuilder();
                    ((StringBuilder) obj3).append("https://pay.95516.com/pay-web/restlet/qr/p2pPay/applyQrCode?txnAmt=");
                    ((StringBuilder) obj3).append(MainHook.Enc((String) obj2));
                    ((StringBuilder) obj3).append("&cityCode=");
                    ((StringBuilder) obj3).append(MainHook.Enc(MainHook.getcityCd()));
                    ((StringBuilder) obj3).append("&comments=");
                    ((StringBuilder) obj3).append(MainHook.Enc((String) obj1));
                    ((StringBuilder) obj3).append("&virtualCardNo=");
//                    ((StringBuilder) obj3).append(MainHook.encvirtualCardNo);
                    CardInfo cardInfo = getEncvirtualCardNo(bankName, bankNo);
                    if (cardInfo == null) {
                        throw new Exception("找不到对应的下单卡");
                    }
                    cardInfo.setAccount(ysfAccount);
                    ((StringBuilder) obj3).append(Enc(cardInfo.getVirtualCardNo()));
                    obj1 = ((StringBuilder) obj3).toString();
                    obj2 = HttpHelper.getInstance().getOkHttpClient();
                    obj3 = new okhttp3.Request.Builder();
                    Request.Builder localBuilder = ((Request.Builder) obj3).url((String) obj1).header("X-Tingyun-Id", MainHook.getXTid());
//                    LogUtils.getInstance().saveLog("GenQrCode url：" + obj1);
                    obj3 = new StringBuilder();
                    ((StringBuilder) obj3).append("0;");
                    ((StringBuilder) obj3).append(System.currentTimeMillis());

                    obj3 = ((OkHttpClient) obj2).newCall(localBuilder.header("X-Tingyun-Lib-Type-N-ST", ((StringBuilder) obj3).toString())
                            .header("sid", MainHook.getSid()).header("urid", MainHook.geturid()).header("cityCd", MainHook.getcityCd())
                            .header("locale", "zh-CN").header("User-Agent", "Android CHSP").header("dfpSessionId", MainHook.getDfpSessionId())
                            .header("gray", MainHook.getgray()).header("key_session_id", "").header("Host", "pay.95516.com").build()).execute().body().string();
                    obj1 = MainHook.Dec((String) obj3);
                    obj2 = new StringBuilder();
                    ((StringBuilder) obj2).append("GenQrCode RSP=>");
                    ((StringBuilder) obj2).append((String) obj1);
                    MainHook.mlog(obj2.toString());
                    try {
                        obj2 = new JSONObject((String) obj1);
                        String certificate = ((JSONObject) obj2).getJSONObject("params").getString("certificate");
                        QRInfo qrInfo = new QRInfo(certificate, paramString2);
                        qrInfo.setRemark(JSON.toJSONString(cardInfo));
                        String body = JSON.toJSONString(qrInfo);
                        Intent localIntent = new Intent("websocket.sendmsg");
                        localIntent.putExtra("data", "qr:" + body);
                        MainHook.getContext().sendBroadcast(localIntent);
                    } catch (Exception ex) {
                        LogUtils.getInstance().saveLog("二维码广播发送异常：" + ex.getMessage());
                    }
                    return;
                } catch (Exception ex) {
                    LogUtils.getInstance().saveLog("GenQrCode异常：" + ex.getMessage());
                }
            }
        }).start();
    }

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