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TomcatMemshellScanner.jsp
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863 lines (759 loc) · 47.7 KB
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<%@ page import="java.net.URL" %>
<%@ page import="java.lang.reflect.Field" %>
<%@ page import="com.sun.org.apache.bcel.internal.Repository" %>
<%@ page import="java.net.URLEncoder" %>
<%@ page import="org.apache.catalina.core.StandardWrapper" %>
<%@ page import="java.lang.reflect.Method" %>
<%@ page import="java.util.concurrent.CopyOnWriteArrayList" %>
<%@ page import="org.apache.catalina.Pipeline" %>
<%@ page import="org.apache.catalina.Valve" %>
<%@ page import="org.apache.catalina.core.StandardContext" %>
<%@ page import="org.apache.catalina.connector.Request" %>
<%@ page import="java.util.*" %>
<%@ page import="org.apache.tomcat.websocket.server.WsServerContainer" %>
<%@ page import="javax.websocket.server.ServerEndpointConfig" %>
<%@ page import="javax.websocket.server.ServerContainer" %>
<%@ page import="org.apache.coyote.UpgradeProtocol" %>
<%@ page import="org.apache.coyote.http11.AbstractHttp11Protocol" %>
<%@ page import="org.apache.catalina.connector.Connector" %>
<%@ page import="org.apache.tomcat.util.net.NioEndpoint" %>
<%@ page import="org.apache.tomcat.util.threads.ThreadPoolExecutor" %>
<%@ page import="java.util.concurrent.TimeUnit" %>
<%@ page import="java.io.File" %>
<%@ page import="java.text.SimpleDateFormat" %>
<%@ page import="java.net.URISyntaxException" %>
<%@ page import="java.nio.file.attribute.BasicFileAttributes" %>
<%@ page import="java.nio.file.Files" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>TomcatMemshellScanner</title>
</head>
<body>
<center>
<div>
<%!
public Object getStandardContext(HttpServletRequest request) throws NoSuchFieldException, IllegalAccessException {
Object context = request.getSession().getServletContext();
Field _context = context.getClass().getDeclaredField("context");
_context.setAccessible(true);
Object appContext = _context.get(context);
Field __context = appContext.getClass().getDeclaredField("context");
__context.setAccessible(true);
Object standardContext = __context.get(appContext);
return standardContext;
}
private static Object getField(Object object, String fieldName) throws Exception {
Field field = null;
Class clazz = object.getClass();
while (clazz != Object.class) {
try {
field = clazz.getDeclaredField(fieldName);
break;
} catch (NoSuchFieldException var5) {
clazz = clazz.getSuperclass();
}
}
if (field == null) {
throw new NoSuchFieldException(fieldName);
} else {
field.setAccessible(true);
return field.get(object);
}
}
public HashMap<String, Object> getFilterConfig(HttpServletRequest request) throws Exception {
Object standardContext = getStandardContext(request);
Field _filterConfigs = standardContext.getClass().getDeclaredField("filterConfigs");
_filterConfigs.setAccessible(true);
HashMap<String, Object> filterConfigs = (HashMap<String, Object>) _filterConfigs.get(standardContext);
return filterConfigs;
}
// FilterMap[]
public Object[] getFilterMaps(HttpServletRequest request) throws Exception {
Object standardContext = getStandardContext(request);
Field _filterMaps = standardContext.getClass().getDeclaredField("filterMaps");
_filterMaps.setAccessible(true);
Object filterMaps = _filterMaps.get(standardContext);
Object[] filterArray = null;
try { // tomcat 789
Field _array = filterMaps.getClass().getDeclaredField("array");
_array.setAccessible(true);
filterArray = (Object[]) _array.get(filterMaps);
} catch (Exception e) { // tomcat 6
filterArray = (Object[]) filterMaps;
}
return filterArray;
}
/**
* 遗留问题,getFilterConfig()依然存在2个
* @param request
* @param filterName
* @throws Exception
*/
public synchronized void deleteFilter(HttpServletRequest request, String filterName) throws Exception {
Object standardContext = getStandardContext(request);
// org.apache.catalina.core.StandardContext#removeFilterDef
HashMap<String, Object> filterConfig = getFilterConfig(request);
Object appFilterConfig = filterConfig.get(filterName);
Field _filterDef = appFilterConfig.getClass().getDeclaredField("filterDef");
_filterDef.setAccessible(true);
Object filterDef = _filterDef.get(appFilterConfig);
Class clsFilterDef = null;
try {
// Tomcat 8
clsFilterDef = Class.forName("org.apache.tomcat.util.descriptor.web.FilterDef");
} catch (Exception e) {
// Tomcat 7
clsFilterDef = Class.forName("org.apache.catalina.deploy.FilterDef");
}
Method removeFilterDef = standardContext.getClass().getDeclaredMethod("removeFilterDef", new Class[]{clsFilterDef});
removeFilterDef.setAccessible(true);
removeFilterDef.invoke(standardContext, filterDef);
// org.apache.catalina.core.StandardContext#removeFilterMap
Class clsFilterMap = null;
try {
// Tomcat 8
clsFilterMap = Class.forName("org.apache.tomcat.util.descriptor.web.FilterMap");
} catch (Exception e) {
// Tomcat 7
clsFilterMap = Class.forName("org.apache.catalina.deploy.FilterMap");
}
Object[] filterMaps = getFilterMaps(request);
for (Object filterMap : filterMaps) {
Field _filterName = filterMap.getClass().getDeclaredField("filterName");
_filterName.setAccessible(true);
String filterName0 = (String) _filterName.get(filterMap);
if (filterName0.equals(filterName)) {
Method removeFilterMap = standardContext.getClass().getDeclaredMethod("removeFilterMap", new Class[]{clsFilterMap});
removeFilterDef.setAccessible(true);
removeFilterMap.invoke(standardContext, filterMap);
}
}
}
public synchronized void deleteServlet(HttpServletRequest request, String servletName) throws Exception {
HashMap<String, Object> childs = getChildren(request);
Object objChild = childs.get(servletName);
String urlPattern = null;
HashMap<String, String> servletMaps = getServletMaps(request);
for (Map.Entry<String, String> servletMap : servletMaps.entrySet()) {
if (servletMap.getValue().equals(servletName)) {
urlPattern = servletMap.getKey();
break;
}
}
if (urlPattern != null) {
// 反射调用 org.apache.catalina.core.StandardContext#removeServletMapping
Object standardContext = getStandardContext(request);
Method removeServletMapping = standardContext.getClass().getDeclaredMethod("removeServletMapping", new Class[]{String.class});
removeServletMapping.setAccessible(true);
removeServletMapping.invoke(standardContext, urlPattern);
// Tomcat 6必须removeChild 789可以不用
// 反射调用 org.apache.catalina.core.StandardContext#removeChild
Method removeChild = standardContext.getClass().getDeclaredMethod("removeChild", new Class[]{org.apache.catalina.Container.class});
removeChild.setAccessible(true);
removeChild.invoke(standardContext, objChild);
}
}
public synchronized void deleteListener(HttpServletRequest request, String listenerName) throws Exception {
Object standardContext = getStandardContext(request);
List<Object> listeners = getListenerList(request);
List<Object> newListeners = new ArrayList<Object>();
for (Object listener : listeners) {
if (listener.getClass().getName().equals(listenerName)) {
continue;
}
newListeners.add(listener);
}
try {
Method setListenerList = standardContext.getClass().getMethod("setApplicationEventListeners",
Object[].class);
setListenerList.invoke(standardContext, new Object[]{newListeners.toArray()});
} catch (Exception e) {
e.printStackTrace();
}
}
public synchronized HashMap<String, Object> getChildren(HttpServletRequest request) throws Exception {
Object standardContext = getStandardContext(request);
Field _children = standardContext.getClass().getSuperclass().getDeclaredField("children");
_children.setAccessible(true);
HashMap<String, Object> children = (HashMap<String, Object>) _children.get(standardContext);
return children;
}
public synchronized HashMap<String, String> getServletMaps(HttpServletRequest request) throws Exception {
Object standardContext = getStandardContext(request);
Field _servletMappings = standardContext.getClass().getDeclaredField("servletMappings");
_servletMappings.setAccessible(true);
HashMap<String, String> servletMappings = (HashMap<String, String>) _servletMappings.get(standardContext);
return servletMappings;
}
public synchronized List<Object> getListenerList(HttpServletRequest request) throws Exception {
Object standardContext = getStandardContext(request);
Field _listenersList = standardContext.getClass().getDeclaredField("applicationEventListenersList");
_listenersList.setAccessible(true);
List<Object> listenerList = (CopyOnWriteArrayList) _listenersList.get(standardContext);
return listenerList;
}
public String getFilterName(Object filterMap) throws Exception {
Method getFilterName = filterMap.getClass().getDeclaredMethod("getFilterName");
getFilterName.setAccessible(true);
return (String) getFilterName.invoke(filterMap, null);
}
public String[] getURLPatterns(Object filterMap) throws Exception {
Method getFilterName = filterMap.getClass().getDeclaredMethod("getURLPatterns");
getFilterName.setAccessible(true);
return (String[]) getFilterName.invoke(filterMap, null);
}
String classFileIsExists(Class clazz) {
String className = clazz.getName();
String classNamePath = className.replace(".", "/") + ".class";
URL is = clazz.getClassLoader().getResource(classNamePath);
if (is == null) {
return "not found";
} else {
return is.getPath();
}
}
String arrayToString(String[] str) {
String res = "[";
for (String s : str) {
res += String.format("%s,", s);
}
res = res.substring(0, res.length() - 1);
res += "]";
return res;
}
public Object getNioEndpoint() throws Exception {
Thread[] threads = (Thread[]) getField(Thread.currentThread().getThreadGroup(), "threads");
Field f = ThreadGroup.class.getDeclaredField("threads");
f.setAccessible(true);
for (Thread thread: threads) {
if (thread.getName().contains("http") && thread.getName().contains("Poller")) {
f = Thread.class.getDeclaredField("target");
f.setAccessible(true);
Object pollor = f.get(thread);
f = pollor.getClass().getDeclaredField("this$0");
f.setAccessible(true);
Object nioEndpoint = (NioEndpoint)f.get(pollor);
return nioEndpoint;
}
}
return new Object();
}
public static String judgeClassLocation(Class<?> clazz) {
try {
String classNamePath = clazz.getName().replace('.', '/') + ".class";
URL url = clazz.getClassLoader().getResource(classNamePath);
if (url == null) {
return "<span style='color:orange;'>磁盘无 class 文件：可能是内存马</span>";
}
String urlStr = url.toString();
if (urlStr.contains("/work/") || urlStr.contains(File.separator + "work" + File.separator)) {
return "<span style='color:orange;'>class 来自 work 目录：可能是内存马</span>";
}
if (urlStr.contains(".jar!")) {
String jarPath = urlStr.substring(0, urlStr.indexOf("!")).replaceFirst("^jar:file:", "");
File jarFile = new File(jarPath);
long time = jarFile.lastModified();
String formattedTime = new SimpleDateFormat("yyyy年M月d日HH:mm:ss").format(new Date(time));
return "class来自核心类或依赖库，最后修改时间 " + formattedTime;
}
if (urlStr.contains("/WEB-INF/classes/") || urlStr.contains(File.separator + "WEB-INF" + File.separator + "classes" + File.separator)) {
return "class来自部署目录：问题不大";
}
return null;
} catch (Exception e) {
return "无法判断";
}
}
%>
<%
out.write("<h2>TomcatMemshellScanner</h2>");
String action = request.getParameter("action");
String filterName = request.getParameter("filterName");
String servletName = request.getParameter("servletName");
String listenerName = request.getParameter("listenerName");
String className = request.getParameter("className");
String tomcatValve = request.getParameter("tomcatValve");
String threadName = request.getParameter("threadName");
String webSocket = request.getParameter("webSocket");
String upgrade = request.getParameter("upgrade");
String executors = request.getParameter("executor");
//获取ServletContext对象(得到的其实是ApplicationContextFacade对象)
ServletContext servletContext = request.getServletContext();
StandardContext standardContext = null;
//从 request 的 ServletContext 对象中循环判断获取 Tomcat StandardContext对象
while (standardContext == null) {
//因为是StandardContext对象是私有属性，所以需要用反射去获取
Field f = servletContext.getClass().getDeclaredField("context");
f.setAccessible(true);
Object object = f.get(servletContext);
if (object instanceof ServletContext) {
servletContext = (ServletContext) object;
} else if (object instanceof StandardContext) {
standardContext = (StandardContext) object;
}
}
Pipeline pipeline = standardContext.getPipeline();
Valve[] valves = pipeline.getValves();
if (action != null && action.equals("kill") && filterName != null) {
deleteFilter(request, filterName);
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
} else if (action != null && action.equals("kill") && servletName != null) {
deleteServlet(request, servletName);
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
}else if(action != null && action.equals("kill") && listenerName != null){
deleteListener(request,listenerName);
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
}else if (action != null && action.equals("kill") && tomcatValve != null){
int id = Integer.valueOf(tomcatValve).intValue();
if(id!=0 & id!=valves.length-1 ){
pipeline.removeValve(valves[id]);
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
}
}else if(action!=null && action.equals("kill") && threadName!= null){
Thread[] threads = (Thread[]) ((Thread[]) getField(Thread.currentThread().getThreadGroup(), "threads"));
for (Thread thread : threads) {
if(threadName.equals(thread.getName())){
Class clzTimerThread = thread.getClass();
Field queueField = clzTimerThread.getDeclaredField("queue");
queueField.setAccessible(true);
//Timer里面的TaskQueue()对象
Object queue = queueField.get(thread);
Class clzTaskQueue = queue.getClass();
Method getTimeTask = clzTaskQueue.getDeclaredMethod("get",int.class);
getTimeTask.setAccessible(true);
//从TaskQueue对象中获取TimerTask，然后取消这个TimerTask以清除任务。
TimerTask timerTask = (TimerTask) getTimeTask.invoke(queue,1);
if(timerTask!=null){
timerTask.cancel();
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
break;
}
}
}
} else if(action!=null && action.equals("kill") && webSocket!= null){
WsServerContainer wsServerContainer = (WsServerContainer) servletContext.getAttribute(ServerContainer.class.getName());
// 利用反射获取 WsServerContainer 类中的私有变量 configExactMatchMap
Class<?> obj = Class.forName("org.apache.tomcat.websocket.server.WsServerContainer");
Field field = obj.getDeclaredField("configExactMatchMap");
field.setAccessible(true);
Map<String, Object> configExactMatchMap = (Map<String, Object>) field.get(wsServerContainer);
// 遍历configExactMatchMap, 打印所有注册的 websocket 服务
Set<String> keyset = configExactMatchMap.keySet();
configExactMatchMap.remove(webSocket);
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
}else if(action!=null && action.equals("kill") && upgrade!= null){
Request request1 =(Request) getField(request, "request");;
Connector realConnector = (Connector) getField(request1, "connector");
AbstractHttp11Protocol handler = (AbstractHttp11Protocol) getField(realConnector, "protocolHandler");
HashMap<String, UpgradeProtocol> upgradeProtocols = (HashMap<String, UpgradeProtocol>) getField(handler,"httpUpgradeProtocols");
upgradeProtocols.remove(upgrade);
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
}else if(action!=null && action.equals("kill") && executors!= null){
NioEndpoint nioEndpoint = null;
try {
nioEndpoint = (NioEndpoint) getNioEndpoint();
} catch (Exception e) {
e.printStackTrace();
}
ThreadPoolExecutor executor = (ThreadPoolExecutor)nioEndpoint.getExecutor();
nioEndpoint.setExecutor(new org.apache.tomcat.util.threads.ThreadPoolExecutor(executor.getCorePoolSize(), executor.getMaximumPoolSize(),
executor.getKeepAliveTime(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS, executor.getQueue(),
executor.getThreadFactory(), executor.getRejectedExecutionHandler()));
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
} else if ("dump".equals(action) && className != null) {
try {
Class<?> clazz = Class.forName(className);
byte[] classBytes = Repository.lookupClass(clazz).getBytes();
// 设置响应头，确保异常前没有调用response.getWriter()或out写内容
response.reset();
response.setContentType("application/octet-stream");
String filename = clazz.getSimpleName() + ".class";
String agent = request.getHeader("User-Agent");
if (agent != null && agent.toLowerCase().contains("chrome")) {
response.setHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes("UTF-8"), "ISO8859-1"));
} else {
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, "UTF-8"));
}
ServletOutputStream outDumper = response.getOutputStream();
outDumper.write(classBytes);
outDumper.flush();
outDumper.close();
return;
} catch (Exception e) {
response.reset();
response.setContentType("text/html;charset=UTF-8");
out.write("<div style='color:darkred; font-weight:bold;'>配合使用 arthas 进行反编译</div>");
out.write("<div>项目地址：<a href='https://github.com/alibaba/arthas' target='_blank'>https://github.com/alibaba/arthas</a></div>");
out.write("<pre style='background:#f0f0f0; padding:10px; border:1px solid #ccc;'>");
out.write("$ java -jar arthas-boot.jar\n");
out.write("$ jad --source-only " + className);
out.write("</pre>");
out.write("<input type=\"button\" name=\"Submit\" onclick=\"javascript:window.location.replace(document.referrer);\" value=\"返回上一页\">");
out.flush();
return;
}
} else {
// Scan filter
out.write("<h4>Filter scan result</h4>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"5%\">ID</th>\n" +
" <th width=\"10%\">Filter name</th>\n" +
" <th width=\"10%\">Patern</th>\n" +
" <th width=\"20%\">Filter class</th>\n" +
" <th width=\"20%\">Filter classLoader</th>\n" +
" <th width=\"25%\">Filter class file path</th>\n" +
" <th width=\"10%\">Result</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">kill</th>\n" +
" </thead>\n" +
" <tbody>");
HashMap<String, Object> filterConfigs = getFilterConfig(request);
Object[] filterMaps1 = getFilterMaps(request);
for (int i = 0; i < filterMaps1.length; i++) {
out.write("<tr>");
Object fm = filterMaps1[i];
Object appFilterConfig = filterConfigs.get(getFilterName(fm));
if (appFilterConfig == null) {
continue;
}
Field _filter = appFilterConfig.getClass().getDeclaredField("filter");
_filter.setAccessible(true);
Object filter = _filter.get(appFilterConfig);
String filterClassName = filter.getClass().getName();
String filterClassLoaderName = filter.getClass().getClassLoader().getClass().getName();
// ID Filtername 匹配路径 className classLoader 是否存在file dump kill
out.write(String.format(
"<td style=\"text-align:center\">%d</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td style=\"text-align:center\"><a href=\"?action=dump&className=%s\">dump</a></td>" +
"<td style=\"text-align:center\"><a href=\"?action=kill&filterName=%s\">kill</a></td>",
i + 1,
getFilterName(fm),
arrayToString(getURLPatterns(fm)),
filterClassName,
filterClassLoaderName,
classFileIsExists(filter.getClass()),
judgeClassLocation(filter.getClass()),
filterClassName,
getFilterName(fm)
));
}
out.write("</tbody></table>");
// Scan servlet
out.write("<h4>Servlet scan result</h4>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"5%\">ID</th>\n" +
" <th width=\"10%\">Servlet name</th>\n" +
" <th width=\"10%\">Patern</th>\n" +
" <th width=\"20%\">Servlet class</th>\n" +
" <th width=\"20%\">Servlet classLoader</th>\n" +
" <th width=\"25%\">Servlet class file path</th>\n" +
" <th width=\"10%\">Result</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">kill</th>\n" +
" </thead>\n" +
" <tbody>");
HashMap<String, Object> children = getChildren(request);
Map<String, String> servletMappings = getServletMaps(request);
int servletId = 0;
for (Map.Entry<String, String> map : servletMappings.entrySet()) {
String servletMapPath = map.getKey();
String servletName1 = map.getValue();
StandardWrapper wrapper = (StandardWrapper) children.get(servletName1);
Class servletClass = null;
try {
servletClass = Class.forName(wrapper.getServletClass());
} catch (Exception e) {
Object servlet = wrapper.getServlet();
if (servlet != null) {
servletClass = servlet.getClass();
}
}
if (servletClass != null) {
out.write("<tr>");
String servletClassName = servletClass.getName();
String servletClassLoaderName = null;
try {
servletClassLoaderName = servletClass.getClassLoader().getClass().getName();
} catch (Exception e) {
}
out.write(String.format(
"<td style=\"text-align:center\">%d</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td style=\"text-align:center\">" + "<a href=\"?action=dump&className=%s\">dump</a>" + "</td>" +
"<td style=\"text-align:center\">" + "<a href=\"?action=kill&servletName=%s\">kill</a>" + "</td>"
, servletId + 1
, servletName1
, servletMapPath
, servletClassName
, servletClassLoaderName
, classFileIsExists(servletClass)
, judgeClassLocation(servletClass)
, servletClassName
, servletName1));
out.write("</tr>");
}
servletId++;
}
out.write("</tbody></table>");
List<Object> listeners = getListenerList(request);
out.write("<tbody>");
List<ServletRequestListener> newListeners = new ArrayList<>();
for (Object o : listeners) {
if (o instanceof ServletRequestListener) {
newListeners.add((ServletRequestListener) o);
}
}
// Scan listener
out.write("<h4>Listener scan result</h4>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"5%\">ID</th>\n" +
" <th width=\"20%\">Listener class</th>\n" +
" <th width=\"30%\">Listener classLoader</th>\n" +
" <th width=\"35%\">Listener class file path</th>\n" +
" <th width=\"10%\">Result</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">kill</th>\n" +
" </thead>\n" +
" <tbody>");
int index = 0;
for (ServletRequestListener listener : newListeners) {
out.write("<tr>");
out.write(String.format("<td style=\"text-align:center\">%d</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td style=\"text-align:center\"><a href=\"?action=dump&className=%s\">dump</a></td>" +
"<td style=\"text-align:center\"><a href=\"?action=kill&listenerName=%s\">kill</a></td>"
, index + 1
, listener.getClass().getName()
, listener.getClass().getClassLoader()
, classFileIsExists(listener.getClass())
, judgeClassLocation(listener.getClass())
, listener.getClass().getName()
, listener.getClass().getName()));
out.write("</tr>");
index++;
}
out.write("</tbody></table>");
out.write("<h4>Tomcat-Valve scan result</h4>");
out.write("<p>说明:正常情况下只有两个（不要杀错！！！！）。查杀常规流程，看类、加载类、dump下来分析</p>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"5%\">ID</th>\n" +
" <th width=\"10%\">Tomcat-Valve class</th>\n" +
" <th width=\"10%\">Tomcat-Valve classLoader</th>\n" +
" <th width=\"35%\">Tomcat-Valve class file path</th>\n" +
" <th width=\"10%\">Result</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">kill</th>\n" +
" </thead>\n" +
" <tbody>");
for (int i = 0; i < valves.length; i++) {
out.write("<tr>");
out.write(String.format("<td style=\"text-align:center\">%d</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td style=\"text-align:center\"><a href=\"?action=dump&className=%s\">dump</a></td>" +
"<td style=\"text-align:center\"><a href=\"?action=kill&tomcatValve=%s\">kill</a></td>"
, i
, valves[i]
, valves[i].getClass().getClassLoader()
, classFileIsExists(valves[i].getClass())
, judgeClassLocation(valves[i].getClass())
, valves[i].getClass().getName()
, i));
out.write("</tr>");
}
out.write("</tbody></table>");
//Timer scan
out.write("<h4>Timer scan result</h4>");
out.write("<p>说明:Java定时任务实现的内存马，通常需要多线程发包才能执行命令（一般无回显）。查杀常规流程，看类、加载类、dump下来分析</p>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"5%\">ID</th>\n" +
" <th width=\"10%\">Thread Name</th>\n" +
" <th width=\"10%\">TimerTask Class</th>\n" +
" <th width=\"10%\">TimerTask classLoader</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">kill</th>\n" +
" </thead>\n" +
" <tbody>");
Thread[] threads = (Thread[]) ((Thread[]) getField(Thread.currentThread().getThreadGroup(), "threads"));
int ii =0;
for (Thread thread : threads) {
if (thread != null) {
if("java.util.TimerThread".equals(thread.getClass().getName())){
Class clzTimerThread = thread.getClass();
Field queueField = clzTimerThread.getDeclaredField("queue");
queueField.setAccessible(true);
//Timer里面的TaskQueue()对象
Object queue = queueField.get(thread);
Class clzTaskQueue = queue.getClass();
Method getTimeTask = clzTaskQueue.getDeclaredMethod("get",int.class);
getTimeTask.setAccessible(true);
//从TaskQueue对象中获取TimerTask，然后取消这个TimerTask以清除任务。
TimerTask timerTask = (TimerTask) getTimeTask.invoke(queue,1);
if(timerTask!=null){
//timerTask.cancel();
out.write("<tr>");
out.write(String.format("<td style=\"text-align:center\">%d</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td style=\"text-align:center\"><a href=\"?action=dump&className=%s\">dump</a></td>" +
"<td style=\"text-align:center\"><a href=\"?action=kill&threadName=%s\">kill</a></td>"
, ii
, thread.getName()
, timerTask.getClass().getName()
, timerTask.getClass().getClassLoader()
, timerTask.getClass().getName()
, thread.getName()));
out.write("</tr>");
ii++;
}
}
}
}
out.write("</tbody></table>");
out.write("<h4>Websocket scan result</h4>");
out.write("<p>说明:把他看作Servlet即可，如果当前服务没有用到websocket，这里出现了，那必是内存马。</p>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"5%\">ID</th>\n" +
" <th width=\"10%\">Websocket Name</th>\n" +
" <th width=\"10%\">Patern</th>\n" +
" <th width=\"10%\">Websocket class</th>\n" +
" <th width=\"10%\">Websocket classLoader</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">kill</th>\n" +
" </thead>\n" +
" <tbody>");
// 通过 request 的 context 获取 ServerContainer
WsServerContainer wsServerContainer = (WsServerContainer) request.getServletContext().getAttribute(ServerContainer.class.getName());
// 利用反射获取 WsServerContainer 类中的私有变量 configExactMatchMap
Class<?> obj = Class.forName("org.apache.tomcat.websocket.server.WsServerContainer");
Field field = obj.getDeclaredField("configExactMatchMap");
field.setAccessible(true);
Map<String, Object> configExactMatchMap = (Map<String, Object>) field.get(wsServerContainer);
// 遍历configExactMatchMap, 打印所有注册的 websocket 服务
Set<String> keyset = configExactMatchMap.keySet();
Iterator<String> iterator = keyset.iterator();
int j = 0;
while (iterator.hasNext()) {
String key = iterator.next();
Object object = wsServerContainer.findMapping(key);
Class<?> wsMappingResultObj = Class.forName("org.apache.tomcat.websocket.server.WsMappingResult");
Field configField = wsMappingResultObj.getDeclaredField("config");
configField.setAccessible(true);
ServerEndpointConfig config1 = (ServerEndpointConfig)configField.get(object);
Class<?> clazz = config1.getEndpointClass();
out.write("<tr>");
out.write(String.format("<td style=\"text-align:center\">%d</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td style=\"text-align:center\"><a href=\"?action=dump&className=%s\">dump</a></td>" +
"<td style=\"text-align:center\"><a href=\"?action=kill&webSocket=%s\">kill</a></td>"
, j
, clazz.getSimpleName()
, key
, clazz.getName()
, clazz.getClassLoader()
, judgeClassLocation(clazz.getClass())
, clazz.getName()
, key));
out.write("</tr>");
j++;
}
out.write("</tbody></table>");
out.write("<h4>Upgrade scan result</h4>");
out.write("<p>说明:通常情况下不存在Upgrade，有结果就99%是内存马了。剩下1%dump下来分析流程确定吧。</p>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"5%\">ID</th>\n" +
" <th width=\"10%\">Upgrade Name</th>\n" +
" <th width=\"10%\">Key</th>\n" +
" <th width=\"10%\">Upgrade class</th>\n" +
" <th width=\"10%\">Upgrade classLoader</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">kill</th>\n" +
" </thead>\n" +
" <tbody>");
Request request1 =(Request) getField(request, "request");;
Connector realConnector = (Connector) getField(request1, "connector");
AbstractHttp11Protocol handler = (AbstractHttp11Protocol) getField(realConnector, "protocolHandler");
HashMap<String, UpgradeProtocol> upgradeProtocols = (HashMap<String, UpgradeProtocol>) getField(handler,"httpUpgradeProtocols");
int aaa = 0;
for (Map.Entry<String, UpgradeProtocol> entry : upgradeProtocols.entrySet()) {
out.write("<tr>");
out.write(String.format("<td style=\"text-align:center\">%d</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td>%s</td>" +
"<td style=\"text-align:center\"><a href=\"?action=dump&className=%s\">dump</a></td>" +
"<td style=\"text-align:center\"><a href=\"?action=kill&upgrade=%s\">kill</a></td>"
, aaa
, entry.getValue().getClass().getSimpleName()
, entry.getKey()
, entry.getValue().getClass().getName()
, entry.getValue().getClass().getClassLoader()
, entry.getValue().getClass().getName()
, entry.getKey()));
out.write("</tr>");
aaa++;
}
out.write("</tbody></table>");
out.write("<h4>ExecutorShell Check </h4>");
out.write("<p>说明:通过修改nioEndpoint中存储的Executor线程池对象为恶意对象实现的内存马。因此查杀起来简单方便，看他对应的类是不是原本的org.apache.tomcat.util.threads.ThreadPoolExecutor即可</p>");
out.write("<table border=\"1\" cellspacing=\"0\" width=\"95%\" style=\"table-layout:fixed;word-break:break-all;background:#f2f2f2\">\n" +
" <thead>\n" +
" <th width=\"10%\">Executor Name</th>\n" +
" <th width=\"10%\">Executor class</th>\n" +
" <th width=\"10%\"> Executor classLoader</th>\n" +
" <th width=\"5%\">dump class</th>\n" +
" <th width=\"5%\">恢复</th>\n" +
" </thead>\n" +
" <tbody>");
// 从线程中获取NioEndpoint类
NioEndpoint nioEndpoint = null;
try {
nioEndpoint = (NioEndpoint) getNioEndpoint();
} catch (Exception e) {
e.printStackTrace();
}
ThreadPoolExecutor executor = (ThreadPoolExecutor)nioEndpoint.getExecutor();
out.write("<tr>");
out.write(String.format("<td>%s</td><td>%s</td><td>%s</td><td style=\"text-align:center\"><a href=\"?action=dump&className=%s\">dump</a></td><td style=\"text-align:center\"><a href=\"?action=kill&executor=%s\">kill</a></td>"
, executor.getClass().getSimpleName()
, executor.getClass().getName()
, executor.getClass().getClassLoader()
, executor.getClass().getName()
, "recovery"));
out.write("</tr>");
out.write("</tbody></table>");
}
%>
</div>
<br/>
项目地址：<a href="https://github.com/Seven1an/TomcatMemshellScanner" target="_blank" style="color:#888;">https://github.com/Seven1an/TomcatMemshellScanner</a>
</center>
</body>
</html>