安卓逆向HOOK 3.系类HOOK

package xphok;

import java.lang.reflect.Method;
import java.security.MessageDigest;
import java.text.DateFormat.Field;

import android.R.string;
import android.view.View;
import android.widget.EditText;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage.LoadPackageParam;

public class xp implements IXposedHookLoadPackage{
///XP框架入口点
    @Override
    public void handleLoadPackage(LoadPackageParam pparam) 
        throws Throwable {
        // TODO Auto-generated method stub
        
if(pparam.packageName.equals("com.qianyu.zhuceji"))
{
    
    XposedHelpers.findAndHookMethod(
            "com.qianyu.zhuceji.MainActivity", 
            pparam.classLoader, 
            "checkSN",
            String.class,
            String.class,            
            new XC_MethodHook()            
{                @Override
                protected void beforeHookedMethod(MethodHookParam param) 
                throws Throwable {
                    super.beforeHookedMethod(param);                    
                    //XposedBridge.log("userName:"+param.args[0]);
                    //XposedBridge.log("修改器前激活码:"+param.args[1]);
                    
            ///反射机制
                    
            ///1.获取类
            Class<?> clazz=param.thisObject.getClass();
            ///获取字段
        java.lang.reflect.Field sn=clazz.getDeclaredField("edit_sn");
        //设置可见
        sn.setAccessible(true);
        EditText et_sn=(EditText)sn.get(param.thisObject);
                String uesename=(String)param.args[0];
                    MessageDigest digest = MessageDigest.getInstance("MD5");
                    digest.reset();
                    digest.update(uesename.getBytes());
            //反射主动调用    
            ///获取方法        
Method method=      clazz.getDeclaredMethod("toHexString", new Class[]{byte[].class,String.class});       
///私有设置可见    
method.setAccessible(true);
String hexstr=(String)method.invoke(param.thisObject, new Object[]{digest.digest(), ""});
  ///主动调用方法
 // String hexstr=(String)XposedHelpers.callStaticMethod(
//    param.thisObject.getClass(),///返回类
//    "toHexString", 
//    new Object[]{digest.digest(),""});
  XposedBridge.log("hexstr的属性::"+hexstr);
  StringBuilder sb = new StringBuilder();
   for (int i = 0; i < hexstr.length(); i += 2) {
      sb.append(hexstr.charAt(i));
     }
    //param.args[0]="111111";
        param.args[1]=sb.toString();
                    et_sn.setText(sb.toString());
                    ///XposedBridge.log("参数1"+param.args[0]);
                    XposedBridge.log("正确激活码:"+param.args[1]);                    
              }
              @Override
              protected void afterHookedMethod(MethodHookParam param)
                      throws Throwable {
                  super.afterHookedMethod(param);
                  XposedBridge.log("返回值"+param.getResult());
                ///param.setResult(true);
              }
            }
            );
    ///匿名类
    
XposedHelpers.findAndHookMethod(
    "com.qianyu.zhuceji.MainActivity$1",
    pparam.classLoader, 
    "onClick", 
    View.class,
new XC_MethodHook()    
{
@Override
protected void beforeHookedMethod(MethodHookParam param) 
throws Throwable {
super.beforeHookedMethod(param);    
View view=(View)param.args[0];
XposedBridge.log("参数1view"+view.getId());                
         
}    
    });    

}

if(pparam.packageName.equals("com.wolong.resource"))
{
    ///hook所有类
    XposedHelpers.findAndHookConstructor(
            "com.yaotong.crackme.MainActivity", 
            pparam.classLoader,
            int.class,
            String.class,
            new XC_MethodHook(){}
            );
}

    }
}

笔记细节

https://www.52pojie.cn/thread-1719456-1-1.html