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Konloch / bytecode-viewer

A Java 8+ Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)
https://bytecodeviewer.com
GNU General Public License v3.0
14.65k stars 1.15k forks source link

JEB #40

Open Sputuks3 opened 9 years ago

Sputuks3 commented 9 years ago

Not sure how to reproduce this

Bytecode Viewer Version: 2.9.3

java.lang.ArrayIndexOutOfBoundsException: 2149
    at org.objectweb.asm.Label.a(Unknown Source)
    at org.objectweb.asm.MethodWriter.visitLabel(Unknown Source)
    at org.objectweb.asm.tree.LabelNode.accept(Unknown Source)
    at org.objectweb.asm.tree.InsnList.accept(Unknown Source)
    at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
    at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
    at org.objectweb.asm.tree.ClassNode.accept(Unknown Source)
    at the.bytecode.club.bytecodeviewer.JarUtils.saveAsJar(JarUtils.java:192)
   at                 the.bytecode.club.bytecodeviewer.decompilers.JEBDecompiler.decompileClassNode(JEBDecompiler.java:45)
at the.bytecode.club.bytecodeviewer.gui.ClassViewer$15.doShit(ClassViewer.java:1183)
at the.bytecode.club.bytecodeviewer.gui.PaneUpdaterThread.run(PaneUpdaterThread.java:16)
Konloch commented 9 years ago

the.bytecode.club.bytecodeviewer.decompilers.JEBDecompiler.decompileClassNode(JEBDecompiler.java:45)

Could I see this class?

Sputuks3 commented 9 years ago

Sure. Perhaps you could include in your new release.

public class JEBDecompiler extends Decompiler {
   //base path to JEB, change to suit your environment
    private static String sDrv = System.getenv("SystemDrive");
    //full location to JEB jar executable
    private static String jebloc = sDrv + BytecodeViewer.fs + "jeb-1.5.201404100" + BytecodeViewer.fs + "bin" + BytecodeViewer.fs + "jeb.jar";
//specify location to custom jre to use here, can set to older or newer
private static String jre = sDrv+ BytecodeViewer.fs + "Java" +BytecodeViewer.fs+ "jdk1.7.0_21"+BytecodeViewer.fs+"bin"+BytecodeViewer.fs+"java.exe";
//script file name and contents
private static final byte[] JEB_SCRIPT_DATA = new byte[]{0x69, 0x6D, 0x70, 0x6F, 0x72, 0x74, 0x20, 0x6A, 0x61, 0x76, 0x61, 0x2E, 0x69, 0x6F, 0x2E, 0x2A, 0x3B, 0x0A, 0x69, 0x6D, 0x70, 0x6F, 0x72, 0x74, 0x20, 0x6A, 0x61, 0x76, 0x61, 0x2E, 0x75, 0x74, 0x69, 0x6C, 0x2E, 0x49, 0x74, 0x65, 0x72, 0x61, 0x74, 0x6F, 0x72, 0x3B, 0x0A, 0x0A, 0x69, 0x6D, 0x70, 0x6F, 0x72, 0x74, 0x20, 0x6A, 0x65, 0x62, 0x2E, 0x61, 0x70, 0x69, 0x2E, 0x2A, 0x3B, 0x0A, 0x69, 0x6D, 0x70, 0x6F, 0x72, 0x74, 0x20, 0x6A, 0x65, 0x62, 0x2E, 0x61, 0x70, 0x69, 0x2E, 0x64, 0x65, 0x78, 0x2E, 0x44, 0x65, 0x78, 0x3B, 0x0A, 0x0A, 0x70, 0x75, 0x62, 0x6C, 0x69, 0x63, 0x20, 0x63, 0x6C, 0x61, 0x73, 0x73, 0x20, 0x44, 0x65, 0x63, 0x6F, 0x6D, 0x70, 0x69, 0x6C, 0x65, 0x43, 0x6C, 0x61, 0x73, 0x73, 0x20, 0x69, 0x6D, 0x70, 0x6C, 0x65, 0x6D, 0x65, 0x6E, 0x74, 0x73, 0x20, 0x49, 0x53, 0x63, 0x72, 0x69, 0x70, 0x74, 0x20, 0x7B, 0x0A, 0x0A, 0x0A, 0x20, 0x20, 0x20, 0x20, 0x4A, 0x65, 0x62, 0x49, 0x6E, 0x73, 0x74, 0x61, 0x6E, 0x63, 0x65, 0x20, 0x6A, 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private static final String JEB_SCRIPT_NAME = "DecompileClass";

@Override
public String decompileClassNode(ClassNode cn, byte[] b) {
    //JOptionPane.showMessageDialog(null, "Method Start");
    String s = "Bytecode Viewer Version: " + BytecodeViewer.version + BytecodeViewer.nl + BytecodeViewer.nl + "Please send this to konloch@gmail.com. " + BytecodeViewer.nl + BytecodeViewer.nl;
    String jebScriptName = "";  //change JEB Script name here

    final File tempDirectory = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + MiscUtils.randomString(32) + BytecodeViewer.fs);
    tempDirectory.mkdirs();
    final File tempJar = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp"+MiscUtils.randomString(32)+".jar");
    JarUtils.saveAsJar(BytecodeViewer.getLoadedClasses(), tempJar.getAbsolutePath());
    //for JEB only - only Dex format accepted
    final File tempDex = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "dex"+MiscUtils.randomString(32)+".dex");
    Dex2Jar.saveAsDex(tempJar, tempDex);

    BytecodeViewer.sm.blocking = false;

    try {

        String scrPath = writeJEBScript(jebScriptName);

        ByteArrayOutputStream logbytes = new ByteArrayOutputStream();

        logbytes.write((new StringBuffer("Process:").append(BytecodeViewer.nl).append(BytecodeViewer.nl).toString().getBytes("UTF-8")));

        String log = logbytes.toString("UTF-8");

        int exitValue = runProcess(logbytes, scrPath, tempDex.getAbsolutePath(), tempDirectory.getAbsolutePath() + BytecodeViewer.fs, cn.name);

        log += BytecodeViewer.nl+BytecodeViewer.nl+"Exit Value is " + exitValue;

        s = log;

        //if the motherfucker failed this'll fail, aka wont set.
        s = DiskReader.loadAsString(tempDirectory.getAbsolutePath() + BytecodeViewer.fs + cn.name + ".java");

    } catch(Exception e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        e.printStackTrace();
        s += BytecodeViewer.nl+"Bytecode Viewer Version: " + BytecodeViewer.version + BytecodeViewer.nl + BytecodeViewer.nl + sw.toString();
    }
    tempDirectory.delete();
    tempJar.delete();   //cleanup
    tempDex.delete();   

    BytecodeViewer.sm.blocking = true;

    return s;
}

private int runProcess(OutputStream os, String... params) throws IOException, InterruptedException {
    int exitValue;

    ProcessBuilder pb = new ProcessBuilder(
            jre,
            "-jar",
            jebloc,
            "--automation",
            "--script=" + params[0], //scrPath
            params[1], //tempDex.getAbsolutePath()
            "--",
            params[2], //tempDirectory.getAbsolutePath()
            (params.length == 4)? params[3]: null  //cn.name
        );

    Process process = pb.start();

    //Read out dir output
    InputStream is = process.getInputStream();
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr);
    String line;
    while ((line = br.readLine()) != null) {
        if(os instanceof PrintStream)
            ((PrintStream) os).println(line);
        else if(os instanceof ByteArrayOutputStream)
            ((ByteArrayOutputStream) os).write(line.getBytes());
    }
    br.close();

    is = process.getErrorStream();
    isr = new InputStreamReader(is);
    br = new BufferedReader(isr);
    while ((line = br.readLine()) != null) {
        if(os instanceof PrintStream)
            ((PrintStream) os).println(line);
        else if(os instanceof ByteArrayOutputStream)
            ((ByteArrayOutputStream) os).write(line.getBytes());
    }
    br.close();

    exitValue = process.waitFor();
    return exitValue;
}

private String writeJEBScript(String scriptName) throws IOException {

    if(scriptName == null || scriptName.isEmpty())
        scriptName = JEB_SCRIPT_NAME;

    StringBuffer fullScriptPath = new StringBuffer(BytecodeViewer.getBCVDirectory()).append(BytecodeViewer.fs).append("JEB").append(BytecodeViewer.fs).append(scriptName).append(".java");
    String s = fullScriptPath.toString();
    File f = new File(s);

    f.getParentFile().mkdirs();

    try (FileOutputStream out = new FileOutputStream(f))
    {

        if(!scriptName.equals(JEB_SCRIPT_NAME)) {
            String temp = (new String (JEB_SCRIPT_DATA)).replaceAll(JEB_SCRIPT_NAME, scriptName);
            out.write(temp.getBytes());
            return s;
        }

        out.write(JEB_SCRIPT_DATA);

        f.deleteOnExit();

        return s;
    }
    catch(IOException e) {
        throw e;
    }
}

@Override
public void decompileToZip(String zipName) {
    //JOptionPane.showMessageDialog(null, "Method 2 Start");
    String ran = MiscUtils.randomString(32);
    final File tempDirectory = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + ran + BytecodeViewer.fs);
    tempDirectory.mkdirs();
    final File tempJar = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp.jar");
    JarUtils.saveAsJar(BytecodeViewer.getLoadedClasses(), tempJar.getAbsolutePath());

    String jebScriptName = "";  //change JEB Script name here

    //for JEB only - only Dex format accepted
    final File tempDex = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "dex"+MiscUtils.randomString(32)+".dex");
    Dex2Jar.saveAsDex(tempJar, tempDex);

    tempJar.delete();   //cleanup

    BytecodeViewer.sm.blocking = false;

    try {
        String scrPath = writeJEBScript(jebScriptName);

        int exitValue = runProcess(System.out, scrPath, tempJar.getAbsolutePath(), tempDirectory.getAbsolutePath());

        System.out.println("Exit Value is " + exitValue);

       // ZipUtils.zipDirectory(tempDirectory, new File(zipName));
        ZipUtils.zipFolder(tempDirectory.getAbsolutePath(), zipName, ran);

    } catch(Exception e) {
        new the.bytecode.club.bytecodeviewer.api.ExceptionUI(e);
    }
    //tempDirectory.delete();
    tempDex.delete();
    BytecodeViewer.sm.blocking = true;
}

@Override
public void decompileToClass(String className, String classNameSaved) {
    final File tempDirectory = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + MiscUtils.randomString(32) + BytecodeViewer.fs);
    tempDirectory.mkdirs();
    final File tempJar = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "temp.jar");
    JarUtils.saveAsJar(BytecodeViewer.getLoadedClasses(), tempJar.getAbsolutePath());

    String jebScriptName = "";  //change JEB Script name here

    //for JEB only - only Dex format accepted
    final File tempDex = new File(BytecodeViewer.tempDirectory + BytecodeViewer.fs + "dex"+MiscUtils.randomString(32)+".dex");
    Dex2Jar.saveAsDex(tempJar, tempDex);

    tempJar.delete();   //cleanup

    BytecodeViewer.sm.blocking = false;
    try {

        String scrPath = writeJEBScript(jebScriptName);

        int exitValue = runProcess(System.out, scrPath, tempDex.getAbsolutePath(), tempDirectory.getAbsolutePath(), className);
        System.out.println("Exit Value is " + exitValue);

        File f = new File(tempDirectory.getAbsolutePath() + BytecodeViewer.fs + className + ".java");
        f.renameTo(new File(classNameSaved));
        tempDex.delete();
        tempDirectory.delete();

    } catch(Exception e) {
        new the.bytecode.club.bytecodeviewer.api.ExceptionUI(e);
    }

}

}
Konloch commented 9 years ago

Awesome, I'd love to implement this into the latest release of BCV.

As I mentioned on the other ticket, hit me up on Skype when you've got some free time.

Konloch commented 9 years ago

Might be supporting this officially now that the new library system allows external libraries.

Great work on this!

Venryx commented 7 years ago

Always nice to have another decompiler. : )

Several methods in the apk I've been decompiling could only be decompiled by one or two of the five -- and some others (unimportant) failed in every one! So having more is useful, especially if it's as easy as the above code to add in.

On another note, I opened an issue proposing inclusion of another open-source decompiler here: https://github.com/Konloch/bytecode-viewer/issues/164