332 lines
12 KiB
Java
332 lines
12 KiB
Java
import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Scanner;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import javax.swing.Box;
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import javax.swing.JComboBox;
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import javax.swing.JOptionPane;
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import javax.swing.JPanel;
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import org.objectweb.asm.tree.ClassNode;
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import the.bytecode.club.bytecodeviewer.*;
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import the.bytecode.club.bytecodeviewer.api.*;
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import the.bytecode.club.bytecodeviewer.decompilers.impl.FernFlowerDecompiler;
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import the.bytecode.club.bytecodeviewer.gui.resourceviewer.viewer.ResourceViewer;
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/**
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* * This is an Xposed Generator Plugin, used to aid Reverse-Engineering.
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* *
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* * @author jowasp
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**/
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public class XposedGenerator extends Plugin
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{
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private static final List<String> methodsNames = new ArrayList<>();
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private static final List<String> cleanMethodsNames = new ArrayList<>();
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private static String foundPckg;
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@Override
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public void execute(List<ClassNode> classNodeList)
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{
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//Get actual file class content
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ResourceViewer viewer = BytecodeViewer.getActiveResource();
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if (viewer == null)
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{
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BytecodeViewer.showMessage("Open A Classfile First");
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return;
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}
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String className = viewer.getName();
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ClassNode classnode = BytecodeViewer.getCurrentlyOpenedClassNode();
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if (classnode == null)
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{
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BytecodeViewer.showMessage("Open A Classfile First");
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return;
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}
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//Call XposedGenerator class
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parseChosenFileContent(className, classnode);
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}
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public static void parseChosenFileContent(String classname, ClassNode classNode)
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{
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try
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{
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//Parse content - Extract methods after APK /JAR has been extracted
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byte[] cont = ASMUtil.nodeToBytes(classNode);
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//Use one of the decompilers
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//TODO:Allow users to select other decompilers?
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FernFlowerDecompiler decompilefern = new FernFlowerDecompiler();
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//Decompile using Fern
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String decomp = decompilefern.decompileClassNode(classNode, cont);
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String[] xposedTemplateTypes = {"Empty", "Parameters", "Helper"};
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@SuppressWarnings({"unchecked", "rawtypes"})
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JComboBox xposedTemplateList = new JComboBox(xposedTemplateTypes);
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//Set results of parsed methods into a list
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List<String> methodsExtracted = ProcessContentExtractedClass(decomp);
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String packgExtracted = ProcessContentExtractedPackage(decomp);
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//Get a clean list
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List<String> cleanMethods;
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//clear list
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cleanMethods = ProcessCleanMethodsAll(methodsExtracted);
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if (!cleanMethods.isEmpty())
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{
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JComboBox<String> cb = new JComboBox<>(cleanMethods.toArray(new String[0]));
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//Add Panel elements
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//Start Panel
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JPanel myPanel = new JPanel();
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myPanel.add(Box.createHorizontalStrut(15));
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myPanel.add(xposedTemplateList);
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myPanel.add(cb);
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//output methods to pane box
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int result = JOptionPane.showConfirmDialog(null, myPanel, "Choose Template and Method for Xposed Module", JOptionPane.OK_CANCEL_OPTION);
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myPanel.remove();
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if (result == JOptionPane.OK_OPTION)
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{
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//Read Chosen Class
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Object cbItem = cb.getSelectedItem();
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Object xPosedItem = xposedTemplateList.getSelectedItem();
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System.out.println("SELECTED CLASS is" + cbItem);
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if (cbItem != null && xPosedItem != null)
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{
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String selectedClass = cbItem.toString();
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String selectedXposedTemplate = xPosedItem.toString();
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//WriteXposed Class with extracted data
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try
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{
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WriteXposedModule(selectedClass, packgExtracted, classname, selectedXposedTemplate);
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}
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catch (IllegalArgumentException e)
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{
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e.printStackTrace();
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JOptionPane.showMessageDialog(null, "Error" + e);
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}
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}
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}
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}
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else
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{
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JOptionPane.showMessageDialog(null, "Class Not Suitable");
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}
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}
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catch (IllegalArgumentException e)
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{
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e.printStackTrace();
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JOptionPane.showMessageDialog(null, "Error" + e);
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}
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}
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public static void WriteXposedModule(String functionToHook, String packageName, String classToHook, String template)
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{
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if (template != null && !template.equals("Empty"))
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{
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try
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{
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//Extract the package name only
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String packageNameOnly = packageName.substring(8, packageName.length() - 2).trim();
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String classToHookNameOnly = classToHook;
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if (classToHookNameOnly.endsWith(".class"))
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classToHookNameOnly = classToHook.substring(0, classToHookNameOnly.length() - 6);
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String[] classClean = classToHookNameOnly.split("/");
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String[] functionSplitValues = functionToHook.split("\\s+");
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//select
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String onlyClass = classClean[classClean.length - 1];
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String onlyFunction = CleanUpFunction(functionSplitValues);
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//Write Xposed Class
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String XposedClassText = "package androidpentesting.com.xposedmodule;" + "\r\n"
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+ "import de.robv.android.xposed.IXposedHookLoadPackage;" + "\r\n" + "\r\n"
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+ "import de.robv.android.xposed.XC_MethodHook;" + "\r\n"
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+ "import de.robv.android.xposed.XposedBridge;" + "\r\n"
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+ "import de.robv.android.xposed.callbacks.XC_LoadPackage.LoadPackageParam;" + "\r\n"
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+ "import static de.robv.android.xposed.XposedHelpers.findAndHookMethod;" + "\r\n" + "\r\n"
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+ "public class XposedClassTest implements IXposedHookLoadPackage {" + "\r\n" + "\r\n"
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+ " public void handleLoadPackage(final LoadPackageParam lpparam) throws Throwable {" + "\r\n" + "\r\n"
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+ " String classToHook = " + "\"" + packageNameOnly + "." + onlyClass + "\";" + "\r\n"
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+ " String functionToHook = " + "\"" + onlyFunction + "\";" + "\r\n" + "\r\n"
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+ " if (lpparam.packageName.equals(" + "\"" + packageNameOnly + "\"" + ")){" + "\r\n"
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+ " XposedBridge.log(" + "\" Loaded app: \" " + " + lpparam.packageName);" + "\r\n" + "\r\n"
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+ " findAndHookMethod(" + "\"" + onlyClass + "\"" + ", lpparam.classLoader, " + " \"" + onlyFunction + "\"" + ", int.class," + "\r\n"
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+ " new XC_MethodHook() {" + "\r\n"
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+ " @Override" + "\r\n"
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+ " protected void beforeHookedMethod(MethodHookParam param) throws Throwable {" + "\r\n"
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+ " //TO BE FILLED BY ANALYST" + "\r\n"
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+ " }" + "\r\n"
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+ " });" + "\r\n"
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+ " }" + "\r\n"
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+ " }" + "\r\n"
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+ "}" + "\r\n";
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PluginConsole gui = new PluginConsole("Xposed Code Generation");
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gui.appendText(XposedClassText);
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gui.setVisible(true);
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}
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catch (Exception e)
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{
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e.printStackTrace();
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}
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}
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else
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{
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JOptionPane.showMessageDialog(null, "Empty Template Chosen, Did Not Generate");
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}
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}
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private static List<String> ProcessContentExtractedClass(String contentFile)
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{
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Scanner scanner = null;
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try
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{
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scanner = new Scanner(contentFile);
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//@TODO : Improve patterns to match other excepts 'public'
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String regexclass = "public";
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Pattern pattern = Pattern.compile(regexclass, Pattern.CASE_INSENSITIVE);
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while (scanner.hasNextLine())
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{
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String line = scanner.nextLine();
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// process the line
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Matcher matcher = pattern.matcher(line);
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while (matcher.find())
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{
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if (matcher.group() != null)
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{
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System.out.println("find() found the pattern \"" + quote(line.trim()));
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System.out.println("Function: " + CleanUpFunction(line.trim().split("\\s+")));
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methodsNames.add(quote(line.trim()));
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}
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else
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{
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methodsNames.add("No methods found");
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}
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}
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}
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if (methodsNames.isEmpty())
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methodsNames.add("No methods found");
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else
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return methodsNames;
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return methodsNames;
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}
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finally
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{
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if (scanner != null)
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scanner.close();
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}
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}
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private static List<String> ProcessCleanMethodsAll(List<String> rawMethods)
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{
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for (String m : rawMethods)
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{
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//Exclude class declaration
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//TODO:add a list containing all possible types
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if (!m.contains("extends") && (!m.contains("implements") && (m.contains("("))))
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{
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cleanMethodsNames.add(m);
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}
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}
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return cleanMethodsNames;
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}
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private static String CleanUpFunction(String[] rawFunction)
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{
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String onlyFunc = "functiondummy";
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for (String m : rawFunction)
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{
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if (m.contains("("))
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{
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String[] split = m.split("\\(")[0].split(" ");
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return split[split.length - 1];
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}
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}
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return onlyFunc;
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}
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private static String ProcessContentExtractedPackage(String contentFile)
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{
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Scanner scanner = null;
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try
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{
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scanner = new Scanner(contentFile);
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String regexPkg = "package";
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Pattern patternPkg = Pattern.compile(regexPkg, Pattern.CASE_INSENSITIVE);
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String line = scanner.nextLine();
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// process the line
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Matcher matcher = patternPkg.matcher(line);
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while (matcher.find())
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{
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if (matcher.group() != null)
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{
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System.out.println("find() found the pattern \"" + quote(line.trim()));
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foundPckg = quote(line.trim());
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}
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else
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{
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foundPckg = "";
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}
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}
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try
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{
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if (foundPckg == null || foundPckg.isEmpty())
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foundPckg = "No Package Found";
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}
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catch (NullPointerException e)
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{
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JOptionPane.showMessageDialog(null, "Error - no package was found in the selected class: " + e);
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}
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finally
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{
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scanner.close();
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}
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}
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catch (IllegalArgumentException e)
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{
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JOptionPane.showMessageDialog(null, "Error" + e);
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if (scanner != null)
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scanner.close();
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}
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finally
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{
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if (scanner != null)
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scanner.close();
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}
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return foundPckg;
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}
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private static String quote(String aText)
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{
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String QUOTE = "'";
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return QUOTE + aText + QUOTE;
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}
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}
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