BytecodeViewer

java.lang.Object
- the.bytecode.club.bytecodeviewer.BytecodeViewer

```
public class BytecodeViewer
extends java.lang.Object
```
A lightweight Java Reverse Engineering suite, developed by Konloch - http://konloch.me Are you a Java Reverse Engineer? Or maybe you want to learn Java Reverse Engineering? Join The Bytecode Club, we're noob friendly, and censorship free. http://the.bytecode.club All you have to do is add a jar or class file into the workspace, select the file you want then it will start decompiling the class in the background, when it's done it will show the Source code, Bytecode and Hexcode of the class file you chose. There is also a plugin system that will allow you to interact with the loaded classfiles, for example you can write a String deobfuscator, a malicious code searcher, or something else you can think of. You can either use one of the pre-written plugins, or write your own. It supports groovy scripting. Once a plugin is activated, it will send a ClassNode ArrayList of every single class loaded in the file system to the execute function, this allows the user to handle it completely using ASM. TODO: 3.0.0: (RETIREMENT PARTY, WOHOOO) maybe just do AMS5 then obfuscate the dex2jar shit. Add obfuscation: - Add integer boxing and other obfuscation methods contra implemented - Insert unadded/debug opcodes to try to fuck up decompilers - ClassAnylyzterAdapter Add the jump/save mark system Ida Pro has. Add class annotations to bytecode decompiler. EVERYTHING BUG FREE, CHECK 100% bytecode editor that works by editing per method instead of entire class, methods are in a pane like the file navigator Make the tabs menu and middle mouse button click work on the tab itself not just the close button. 2.9.1: make it use that global last used inside of export as jar Spiffy up the plugin console with hilighted lines Take https://github.com/ptnkjke/Java-Bytecode-Editor visualize fix the randomly sometimes fucked up names on file navigation bug make zipfile not include the decode shit -----2.9.0-----: 02/11/2015 - Added ZStringArray String Decrypter. (Thanks Righteous) 02/20/2015 - Moved the decompilers/disassemblers around. 02/20/2015 - Fixed a resource leak with Krakatau Decompiler/Disassembler/Assembler. 02/21/2015 - Fixed regex searching if your regex search contained a syntax error. 02/21/2015 - Added the compiler/decompiler instances to the BytecodeViewer API class. 02/21/2015 - Sped up the decompilers, each view pane runs its own decompiler thread. 02/21/2015 - Added Janino compiler, you can now compile the decompiled source code inside of BCV. 02/21/2015 - Added the editable option for almost all of the decompilers/disassemblers. 02/21/2015 - Cached the next/previous icons and added a resources class for all resources. 01/21/2015 - Renamed EZ-Injection as File-Run, however kept the plugin named EZ-Injection. 02/21/2015 - Dropped Groovy support, added .Java plugin compilation instead (now only 10mb). 02/21/2015 - Added support for reading resources, including displaying images, detecting pure ascii files and more. 02/21/2015 - Fixed an issue with loading an already selected node in the file navigation pane. 02/22/2015 - Added an error console to the Java compiler 02/22/2015 - Ensured the spawned Python/Krakatau processes are killed when closing BCV. 02/22/2015 - Made it more beginner friendly. 02/22/2015 - Fixed? The file navigation search. 02/22/2015 - Added a shit ton more comments to non-api related classes. 02/23/2015 - Added APK resources. 02/23/2015 - MORE ANDROID LOVE! Added APKTool.jar's decode. (Takes a while so it's a setting, also pumped the jar back to 16MB :() 02/23/2015 - Added close all but this tab menu. 02/23/2015 - Not really code related, but added _install.bat and _uninstall.bat for the exe version of BCV. 02/23/2015 - Back to ASM5, packed dex2jar in its own obfuscated jar. 02/23/2015 - Added the annotations back to the Bytecode Decompiler. (Once again, thanks Bibl) 02/23/2015 - It once again works with Java 8 Jars.

Author:

Konloch

Field Summary

Fields
Modifier and Type	Field and Description
`static java.util.ArrayList<java.lang.String>`	`createdRandomizedNames`
`static java.lang.String`	`fs`
`static java.util.ArrayList<java.lang.Process>`	`krakatau`
`static java.lang.String`	`krakatauVersion`
`static java.lang.String`	`krakatauWorkingDirectory`
`static java.lang.String`	`lastDirectory`
`static java.util.HashMap<java.lang.String,org.objectweb.asm.tree.ClassNode>`	`loadedClasses`
`static java.util.HashMap<java.lang.String,byte[]>`	`loadedResources`
`static ClassNodeLoader`	`loader`
`static java.lang.String`	`nl`
`static java.lang.String`	`python`
`static java.lang.String`	`rt`
`static boolean`	`runningObfuscation`
`static java.lang.String`	`settingsName`
`static SecurityMan`	`sm`
`static java.lang.String`	`tempDirectory`
`static java.lang.String`	`version`
`static MainViewerGUI`	`viewer`

Constructor Summary

Constructors
Constructor and Description

BytecodeViewer()

Constructors
Constructor and Description
`BytecodeViewer()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`addRecentFile(java.io.File f)` Add the recent file
`static void`	`addRecentPlugin(java.io.File f)` Add to the recent plugin list
`static void`	`checkKrakatau()` Drops the latest krakatau safely
`static void`	`cleanup()` Clears the temp directory
`static boolean`	`compile(boolean message)` Compile all of the compilable panes that're opened.
`static void`	`exit(int i)` because Smali and Baksmali System.exit if it failed
`static java.lang.String`	`getBCVDirectory()` Returns the BCV directory
`static byte[]`	`getClassFile(java.lang.Class<?> clazz)` Grab the byte array from the loaded Class object
`static org.objectweb.asm.tree.ClassNode`	`getClassNode(java.lang.String name)` Returns the ClassNode by the specified name
`static org.objectweb.asm.tree.ClassNode`	`getCurrentlyOpenedClassNode()` Returns the currently opened ClassNode
`static byte[]`	`getFileContents(java.lang.String name)` Grabs the file contents of the loaded resources.
`static java.util.ArrayList<org.objectweb.asm.tree.ClassNode>`	`getLoadedClasses()` Gets all of the loaded classes as an array list
`static java.lang.String`	`getRandomizedName()` Ensures it will only return a uniquely generated names, contains a dupe checker to be sure
`static void`	`main(java.lang.String[] args)` Main startup
`static void`	`openFiles(java.io.File[] files, boolean recentFiles)` Opens a file, optional if it should append to the recent files menu
`static void`	`resetRecentFilesMenu()` resets the recent files menu
`static void`	`resetWorkSpace(boolean ask)` Resets the workspace with optional user input required
`static void`	`showMessage(java.lang.String message)` Send a message to alert the user
`static void`	`startPlugin(java.io.File plugin)` Starts the specified plugin
`static void`	`updateNode(org.objectweb.asm.tree.ClassNode oldNode, org.objectweb.asm.tree.ClassNode newNode)` Replaces an old node with a new instance

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - version
```
public static java.lang.String version
```
  - krakatauVersion
```
public static java.lang.String krakatauVersion
```
  - viewer
```
public static MainViewerGUI viewer
```
  - loader
```
public static ClassNodeLoader loader
```
  - python
```
public static java.lang.String python
```
  - rt
```
public static java.lang.String rt
```
  - sm
```
public static SecurityMan sm
```
  - loadedClasses
```
public static java.util.HashMap<java.lang.String,org.objectweb.asm.tree.ClassNode> loadedClasses
```
  - loadedResources
```
public static java.util.HashMap<java.lang.String,byte[]> loadedResources
```
  - fs
```
public static java.lang.String fs
```
  - nl
```
public static java.lang.String nl
```
  - settingsName
```
public static java.lang.String settingsName
```
  - tempDirectory
```
public static java.lang.String tempDirectory
```
  - krakatauWorkingDirectory
```
public static java.lang.String krakatauWorkingDirectory
```
  - runningObfuscation
```
public static boolean runningObfuscation
```
  - lastDirectory
```
public static java.lang.String lastDirectory
```
  - krakatau
```
public static java.util.ArrayList<java.lang.Process> krakatau
```
  - createdRandomizedNames
```
public static java.util.ArrayList<java.lang.String> createdRandomizedNames
```
- Constructor Detail
  - BytecodeViewer
```
public BytecodeViewer()
```
- Method Detail
  - getClassFile
```
public static byte[] getClassFile(java.lang.Class<?> clazz)
                           throws java.io.IOException
```
    Grab the byte array from the loaded Class object
    
    Parameters:
    
    clazz -
    
    Returns:
    
    Throws:
    
    java.io.IOException
  - main
```
public static void main(java.lang.String[] args)
```
    Main startup
    
    Parameters:
    
    args - files you want to open
  - exit
```
public static void exit(int i)
```
    because Smali and Baksmali System.exit if it failed
    
    Parameters:
    
    i -
  - getCurrentlyOpenedClassNode
```
public static org.objectweb.asm.tree.ClassNode getCurrentlyOpenedClassNode()
```
    Returns the currently opened ClassNode
    
    Returns:
    
    the currently opened ClassNode
  - getClassNode
```
public static org.objectweb.asm.tree.ClassNode getClassNode(java.lang.String name)
```
    Returns the ClassNode by the specified name
    
    Parameters:
    
    name - the class name
    
    Returns:
    
    the ClassNode instance
  - getFileContents
```
public static byte[] getFileContents(java.lang.String name)
```
    Grabs the file contents of the loaded resources.
    
    Parameters:
    
    name - the file name
    
    Returns:
    
    the file contents as a byte[]
  - updateNode
```
public static void updateNode(org.objectweb.asm.tree.ClassNode oldNode,
                              org.objectweb.asm.tree.ClassNode newNode)
```
    Replaces an old node with a new instance
    
    Parameters:
    
    oldNode - the old instance
    
    newNode - the new instance
  - getLoadedClasses
```
public static java.util.ArrayList<org.objectweb.asm.tree.ClassNode> getLoadedClasses()
```
    Gets all of the loaded classes as an array list
    
    Returns:
    
    the loaded classes as an array list
  - compile
```
public static boolean compile(boolean message)
```
    Compile all of the compilable panes that're opened.
    
    Parameters:
    
    message - if it should send a message saying it's compiled sucessfully.
    
    Returns:
    
    true if no errors, false if it failed to compile.
  - checkKrakatau
```
public static void checkKrakatau()
```
    Drops the latest krakatau safely
  - openFiles
```
public static void openFiles(java.io.File[] files,
                             boolean recentFiles)
```
    Opens a file, optional if it should append to the recent files menu
    
    Parameters:
    
    files - the file(s) you wish to open
    
    recentFiles - if it should append to the recent files menu
  - startPlugin
```
public static void startPlugin(java.io.File plugin)
```
    Starts the specified plugin
    
    Parameters:
    
    plugin - the file of the plugin
  - showMessage
```
public static void showMessage(java.lang.String message)
```
    Send a message to alert the user
    
    Parameters:
    
    message - the message you need to send
  - resetWorkSpace
```
public static void resetWorkSpace(boolean ask)
```
    Resets the workspace with optional user input required
    
    Parameters:
    
    ask - if should require user input or not
  - addRecentFile
```
public static void addRecentFile(java.io.File f)
```
    Add the recent file
    
    Parameters:
    
    f - the recent file
  - addRecentPlugin
```
public static void addRecentPlugin(java.io.File f)
```
    Add to the recent plugin list
    
    Parameters:
    
    f - the plugin file
  - resetRecentFilesMenu
```
public static void resetRecentFilesMenu()
```
    resets the recent files menu
  - cleanup
```
public static void cleanup()
```
    Clears the temp directory
  - getRandomizedName
```
public static java.lang.String getRandomizedName()
```
    Ensures it will only return a uniquely generated names, contains a dupe checker to be sure
    
    Returns:
    
    the unique randomized name of 25 characters.
  - getBCVDirectory
```
public static java.lang.String getBCVDirectory()
```
    Returns the BCV directory
    
    Returns:
    
    the static BCV directory

Class BytecodeViewer

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

version

krakatauVersion

viewer

loader

python

rt

sm

loadedClasses

loadedResources

fs

nl

settingsName

tempDirectory

krakatauWorkingDirectory

runningObfuscation

lastDirectory

krakatau

createdRandomizedNames

Constructor Detail

BytecodeViewer

Method Detail

getClassFile

main

exit

getCurrentlyOpenedClassNode

getClassNode

getFileContents

updateNode

getLoadedClasses

compile

checkKrakatau

openFiles

startPlugin

showMessage

resetWorkSpace

addRecentFile

addRecentPlugin

resetRecentFilesMenu

cleanup

getRandomizedName

getBCVDirectory