CFR-java-decompiler

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Description

CFR will decompile modern Java features - Java 8 lambdas (pre and post Java beta 103 changes), Java 7 String switches etc, but is written entirely in Java 6.

Installation

Usage

Syntax

$ java --jar cfr_0_116.jar class_or_jar_file [method] [options]

Options

  --showops                        (int >= 0)  default: 0
  --decodeenumswitch               (boolean)  default: true if class file from version 49.0 (Java 5) or greater
  --sugarenums                     (boolean)  default: true if class file from version 49.0 (Java 5) or greater
  --decodestringswitch             (boolean)  default: true if class file from version 51.0 (Java 7) or greater
  --arrayiter                      (boolean)  default: true if class file from version 49.0 (Java 5) or greater
  --collectioniter                 (boolean)  default: true if class file from version 49.0 (Java 5) or greater
  --innerclasses                   (boolean)  default: true
  --removeboilerplate              (boolean)  default: true
  --removeinnerclasssynthetics     (boolean)  default: true
  --decodelambdas                  (boolean)  default: true if class file from version 52.0 (Java 8) or greater
  --hidebridgemethods              (boolean)  default: true
  --liftconstructorinit            (boolean)  default: true
  --removedeadmethods              (boolean)  default: true
  --removebadgenerics              (boolean)  default: true
  --sugarasserts                   (boolean)  default: true
  --sugarboxing                    (boolean)  default: true
  --showversion                    (boolean)  default: true
  --decodefinally                  (boolean)  default: true
  --tidymonitors                   (boolean)  default: true
  --lenient                        (boolean)  default: false
  --dumpclasspath                  (boolean)  default: false
  --comments                       (boolean)  default: true
  --forcetopsort                   (boolean) 
  --forcetopsortaggress            (boolean) 
  --forceexceptionprune            (boolean) 
  --outputdir                      (string) 
  --outputpath                     (string) 
  --clobber                        (boolean) 
  --jarfilter                      (string) 
  --stringbuffer                   (boolean)  default: false if class file from version 49.0 (Java 5) or greater
  --stringbuilder                  (boolean)  default: true if class file from version 49.0 (Java 5) or greater
  --silent                         (boolean)  default: false
  --recover                        (boolean)  default: true
  --eclipse                        (boolean)  default: true
  --override                       (boolean)  default: true if class file from version 50.0 (Java 6) or greater
  --showinferrable                 (boolean)  default: false if class file from version 51.0 (Java 7) or greater
  --aexagg                         (boolean) 
  --forcecondpropagate             (boolean) 
  --hideutf                        (boolean)  default: true
  --hidelongstrings                (boolean)  default: false
  --commentmonitors                (boolean)  default: false
  --allowcorrecting                (boolean)  default: true
  --labelledblocks                 (boolean)  default: true
  --j14classobj                    (boolean)  default: false if class file from version 49.0 (Java 5) or greater
  --hidelangimports                (boolean)  default: true
  --recovertypeclash               (boolean) 
  --recovertypehints               (boolean) 
  --forcereturningifs              (boolean) 
  --analyseas                      (string) 
  --forloopaggcapture              (boolean) 
  --renamedupmembers              
  --renameenumidents              
  --renamesmallmembers             (int >= 0)  default: 0
  --renameillegalidents           
  --rename                         (boolean)  default: false
  --aggressivesizethreshold        (int >= 0)  default: 15000
  --extraclasspath                 (string) 
  --pullcodecase                   (boolean)  default: false
  --help                           (string) 

Example

$ java -jar cfr_0_116.jar cookie.jar
[SNIP]
if (this.passwordField1.getPassword().length == 0) {
    JFrame newFrame = new JFrame("Error");
    JLabel label = new JLabel("Please enter a password.");
    label.setHorizontalAlignment(0);
    newFrame.add(label);
    newFrame.setPreferredSize(new Dimension(300, 120));
    newFrame.getContentPane();
    newFrame.pack();
    Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
    newFrame.setLocation(dim.width / 2 - newFrame.getSize().width / 2, dim.height / 2 - newFrame.getSize().height / 2);
    newFrame.setVisible(true);
} else {
    try {
        MessageDigest digest = MessageDigest.getInstance("MD5");
        byte[] arr = digest.digest(new String(this.passwordField1.getPassword()).getBytes("UTF-8"));
        String md5 = new BigInteger(1, arr).toString(16);
        System.out.println(md5);
        String answer = "fdf87a05e2169b88a8db5a1ebc15fa50";
        if (md5.equals(answer)) {
            System.out.println("success! it's working!");
        }
        URLConnection connection = new URL(this.url + new String(this.passwordField1.getPassword())).openConnection();
        connection.setRequestProperty("Accept-Charset", this.charset);
        InputStream response = connection.getInputStream();
        String flag = Cookie.getStringFromInputStream(response);
        JFrame newFrame = new JFrame("Server Response");
        JLabel label = new JLabel(flag);
        label.setHorizontalAlignment(0);
        JPanel content = new JPanel();
        content.setLayout(new BoxLayout(content, 1));
        label.setAlignmentX(0.5f);
        label.setAlignmentY(0.5f);
[SNIP]