protect java code from decompilation

. Hence, our goal of making it difficult to decompile our code is achieved. Find centralized, trusted content and collaborate around the technologies you use most. How do I convert a String to an int in Java? Crema will scramble the symbolic information contained in them, and will place each new class in the file 1.crema. One very simple approach is to add lambdas to your class. Your apps will be compiled into intermediary bytecode (.class files) that will be executed by the Java Runtime Environment (JRE). I know this is a very common question, and a good topic is actually here: Privacy Policy and Cookies Use. Not the answer you're looking for? As Java preserves most of the "metadata" during compilation (which allows dynamic loading and reflection), it is a straight forward to decompile (not only disassemble) the compiled class files. I didnt no this!! Java class file contains only byte code. 2. Postbuild for .NET is the powerful, reliable, and easy-to-use code protection and deployment solution for .NET developers. Add some sample code into the Program.cs: Now build the application, an EXE will be generated in the bin/debug folder: Now let's try to get the source code from the EXE file. 1. Decompilation is taking the compiled code of a program, often minified and obfuscated, and trying to get the original source code back as it was written, or at least get it in a form a person could read. But it is merely a speed bump to anyone who wants at the code. You can use obfuscation tool like 'proguard'. Connect and share knowledge within a single location that is structured and easy to search. Then the JVM executes my original byte code and yet there is nothing to decompile or reverse engineer, right?". But then again, we sell our application into large corporates who tend to abide by licensing conditions--generally a safe environment thanks to the bean counters and lawyers. You can then decrypt it with your private key and re-encrypt as well. :thumbs-up: Perhaps unrelated, but I'd love to see a discussion of obfuscators such as this, in the age of open source vs code that "inherently can't be trusted" (. A true Win32 PE file would not suffer from anything mentioned here, or be solved by the methods described. Asking for help, clarification, or responding to other answers. Basically, before distributing your class files on the Internet, run Crema on them. In the following we will describe obfuscation techniques in detail, because obfuscation is an important technique to protect Java programs. Opinions expressed by DZone contributors are their own. But they are generally more effective at compressing code, than protecting it. If you are interested in developing Java classes and distributing them over the Internet -- and you would like to protect them from being decompiled -- read on. Drag and drop the EXE you want to protect on the ConfuserEx or you can manually select Base Directory, Output Directory and add the DDL or EXE. -keep: Indicate the class files or the methods that you dont want ProGuard to obfuscate. It will run on any platform that supports version 1.1.6 of the Java Virtual Machine. The code examples above show how Mocha is used to effect decompilation and how Crema can come to the rescue by preventing such activity. It is now read-only. JarProtector completely encrypts your jar files into car files, which can be distributed to your customers. What really important is, as Stu answered, figuring out how strong protection you need. JObfuscator is a source code obfuscator for the Java programming language. Now let's run Mocha on the class file and see the Mocha output: The above command generates a file called test.mocha, which contains the Java source code generated by Mocha: As you can see from the example above, Mocha has given us Java source code that is easy to read and understand. Mangle package, class, method and field names Control mangling by access control (e.g., public, protected, private, friendly) Control mangling options on a class by class basis Strip debugging information Insert string tags to secretly mark class files as yours Output map of symbols to mangled symbols Easy to use graphical user interface, see screenshot. Why are non-Western countries siding with China in the UN? Before introducing Crema, we will walk through an example using Mocha. If you cannot find WinRAR as an option to Extract the .apk file, Open the WinRAR application, Select your file and click on Extract. So how can you protect your classes from being decompiled? Or the teenage gamer masses, where this would be more of an issue?). We will examine how code obfuscation can help protect Java bytecodes. Click on + button. Command line interface, useful in Makefiles and build scripts Reduces size of strings in class files for better performance Website: http://www.elegant-software.com/software/jmangle/ Download: http://www.elegant-software.com/software/jmangle/download.html, JavaGuard is a general purpose bytecode obfuscator, designed to fit effortlessly into your regular build and testing process, providing peace of mind that your valuable Java code is more secure against decompilation and other forms of reverse engineering. Yes, we can get the source code from dll or exe. One answer is Crema. Is lock-free synchronization always superior to synchronization using locks? Find centralized, trusted content and collaborate around the technologies you use most. Some of the more advanced Java bytecode obfuscators do much more than just class name mangling. That's why the recovered code is very similar to the original. Monday, February 27, 2023. . Is there a way to get the source code from an APK file? Open Source Projects. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Before understanding how to obfuscate the java code, let us first try to understand how someone can reverse engineer your java application. Convert JAR file to private JARX format, Now let's move that file into test.class again and decompile it using Mocha: As you can see in the code above, the first thing Mocha complains about is a NullPointerException because it was confused about the symbolic information. Regardless of the language your app is translated into - compiled Java, natively compiled C or anything else - if your licensing code is trivially decompiled then your licensing is no longer effective. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How to get an enum value from a string value in Java. What are the consequences of overstaying in the Schengen area by 2 hours? Decompile HelloWorld.class file and view the original source. How does a fan in a turbofan engine suck air in? Now in this case, any average Java person can use JAD to decompile the class file and easily retrieve the password value (defined as constant) as well as salt and in turn can decrypt the data by writing small independent program! $312.90. How do I call one constructor from another in Java? Not even an evil little dongle could prevent this with Java. But, i will go use this program !! If you try to view a class file, it will be non-readable as shown below. Even tough there are private servers developed for them to bypass the security. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. At the minimum, the JVM is going to need to get the code out in order to run it. The attacker's Java reverse-related skills are disabled and forced to reverse native binaries, which is far more difficult than reverse bytecode. A comprehensive list is available in the Google Directory: http://directory.google.com/Top/Computers/Programming/Languages/Java/Development_Tools/Obfuscators/, Tags: decompile java classdecompilerJavajava class fileJava Obfuscatorsreverse engineering. The original source code is not recovered, but instead an equivalent of the original is produced as output, which if compiled should give the same class file that was reverse engineered. 6. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. The bytecode is. Is email scraping still a thing for spammers, Dealing with hard questions during a software developer interview. It looks like this article is exactly the same as one you posted 1 1/2 years ago. In other words, if you are in standard JRE you can't intercept defineClass() method because the standard java has no API for this purpose, and if you use modified JRE with patched ClassLoader or any other hacker trick you can't do it because protected java app will not work at all, and therefore you will have nothing to intercept. This article presents a good start to those unfamiliar with the subject matter. It is also possible to integrate it with your IDE (for example NetBeans). 2. Protect Java Code from Decompilation, beyond Obfuscation License Apache-2.0 license 8stars 3forks Star Notifications Code Issues0 Pull requests0 Actions Projects0 Security Insights More Code Issues Pull requests Actions Projects Security Insights inaccel/protector4j What does your customer base look like? Its amazing!! First if you're targeting "only" the Windows market there's a very easy to prevent the ".class to .java" decompilation: use a tool like Excelsior Jet that will transform the .jar in an .exe. The best you can do is obfuscate the code, but I would recommend against it because it will make tracking down production bugs very difficult because the stack traces will be hard to follow. How is "He who Remains" different from "Kang the Conqueror"? Hi all, in certain scenarios you can save clear executable only in memory,here you see a sample, here is a git-hub project that reverse ConfuserEx Exe Files, I have an application using compact framework with external resource such as Barcode DLL. Extract the zip and then run Select the EXE you want to protect. Download obfuscate software that is available online. This is how World of Warcraft or Diablo works. Figure 4 obfuscated codes. Use jad to reverse-engineer the HelloWorld.class file to get the original source as shown below. Protect java code against decompiler. Test the EXE or DLL generated by ConfusedEx and check if it is working as usual. After you click on Done, go to Protect tab and click on Protect button. The Dofuscator community edition has limited features and the professional edition is very expensive. How to Deploy Java Swing application for windows without revealing the source code. The extreme ease with which Java .class files can be reconstructed into Java sources that closely resemble the originals has a lot to do with Java byte-code design goals and trade-offs. Protect Java Code from Decompilation Protect your Java Applications By Encrypting Jar Files and Classes, beyond Obfuscation GET STARTED DOWNLOAD Encrypt the Jar Files Convert JAR file to private JARX format, protect the class files and structure of application Standard Jar File Encrypted Jarx File What is JARX Yes, we can get the source code from DLL or EXE. Zelix KlassMaster is a utility written in Java that reads and modifies Java class files. Starting with version 6.4 it runs also as a console application. Can it be called via the command line with parameters? Protecting java class files. Now try to decompile it with a decompiler. Sample java source code (myapp.AppToolBar) before obfuscation. How do I call one constructor from another in Java? Note that Crema has many command-line option parameters that you can use; for more information on Crema, see the Resources section. Zelix KlassMaster, for example, can also scramble your code flow in a way that makes it really hard to follow and works as an excellent code optimizer Also many of the obfuscators are also able to scramble your string constants and remove unused code. For instance, do you expect the main program to be written in pure java? How does the Jar2Exe works when Protecting Java Class files from being extracted. Thanks for the directions. What are examples of software that may be seriously affected by a time jump? You can see that the line btnNew = changeButtonLabel(btnNew, language.getText(new)); got translated to d = a(d, n.a(new));, by the ProGuard, which will not make any sense to someone who is using java decompiler tools to reverse engineer the class file. Creating a commercial app is a large investment. $ cd /home/jsmith $ unzip proguard4.2.zip. Protecting java class files. You can run a VLINX Protector4J task by using this Docker image directly, passing the Java task parameters to docker run: This is a base image that you can extend, so it has the bare minimum packages needed. 3.3. Another thing you can do is give your class a Unicode name, especially one using astral characters. Now click on edit rule (button below -). Type ildasm and hit enter. However, it doesn't mean your application cannot be cracked. Compile HelloWorld.java program and execute it to make sure it works properly. A popular application obfuscates function and class names prior to compiling. protect java code from decompilation protect java class from decompile protect java class file decompile JarProtector, JarStarter, java, jar, protection, protector, obfuscator, obfuscation, class files, resource files, protect, secure, security, decompilation, decompiler, byte-code encryption vermsoftarte ludensarcoselle, arcosel JarProtector Job Description: So I have some files that I need a coder to extract the source code . You can select different ways of adding levels of protection. Dealing with hard questions during a software developer interview. JObfuscator employs a variety of obfuscation techniques to protect & conceal the true functionality of your Java source code. JavaWorld To demonstrate this, let's create a simple application first. Suspicious referee report, are "suggested citations" from a paper mill? Launching the CI/CD and R Collectives and community editing features for How to protect or secure java code from decompiling, How can I achieve java byte code encryption (against reverse engineering). The optimizer transforms class files in various ways with can be controlled by a script file. Downside of this is, it would be hard for you to debug and support the obfuscated code in case your customer faces some issues as the stack traces in the exceptions would have the jumbled up class and method names. There are a lot of paid and free software available to Obfuscate the .NET assemblies, Dotfucator from PreEmptive Solutions is one of the popular ones and their community edition is free and included with Visual Studio. These technical details are a quite different story. deploy an encrypted license with a public key to decrypt, let the customer create a new license and send it to you for encryption. Even after decompilation it will be almost impossible to understand the code. Mocha is distributed without charge. I understand the (good) obfuscation tools provide a table you can use to translate the stack output of the runnable to the original classes and code lines. Protecting your Java Source Code. when I use the same decompilers with my jar all the classes are decompiled with full detail. After downloading, extract the zip into a folder and then run ConfuserEx.exe. I'm developing an application using java but I'm not going to release the code. How to get an enum value from a string value in Java, How to decompile obfuscated java programs avoiding class/package name collisions. Many decompilers can't handle lambdas. For the first open visual studio command prompt. proguard.map: This file contains the mapping information for your reference. On clicking edit rule, a new window will appear as shown below. Or should such sensitive components be built in native code (for example, VC++) and call them via JNI? Zelix KlassMaster 2.0 builds on 1.0 by providing a sophisticated name-exclude facility and an advanced script interface called ZKMScript, complete with its own interactive wizard. It is . Protect java code against decompiler. But even then, given that the user has full access to their own system, this only makes things difficult, not impossible -unless you can tie your product directly to the functionality stored in the "black box", as, say, online gaming servers. How to add local jar files to a Maven project? I have noted Jode is showing this error in some java files: Also tried with FernFlower decompiler, with this error: What was the protection there? Java is a compiled language, that means you don't have to ship your source code to the final user. decompile: To decompile is to convert executable (ready-to-run) program code (sometimes called object code ) into some form of higher-level programming language so that it can be read by a human. Extract a source code from a protected dll -- 2 . What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? Isn't that another point where the original source could leak ? Or look at a memory dump to find your constants. I don't really agree with this answer. Is email scraping still a thing for spammers, Why does pressing enter increase the file size by 2 bytes in windows. The only people who you would be fooling with an obfuscator would be complete amateurs. it's never impossible to reverse-engineer in java A typical abuse, the inline hyperlength method, greatly increases the bytecode length, but does more harm than good. Open Source. Thank you. As we can see in the above screenshot when we open the EXE with Telerik JustDecompile, we are able to see the original source code, this can lead to piracy and ultimately you can lose your profits. Before learning how to prevent or make it hard for the decompilers to reverse engineer the source code, we need to understand a few basics concepts. Techniques like performing extreme method name overloading work well for the former, and manipulating control flow to create control structures not possible to represent through Java syntax work well for the latter. Download the appropriate jad for your platform. Protecting java jar files. How to protect compiled Java classes? Test the EXE or DLL generated by ConfusedEx and check if it is working as usual. (adsbygoogle = window.adsbygoogle || []).push({}); If you are writing Java classes and distributing them over the Internet, you should know that people can reverse-engineer, disassemble, or decompile your classes into Java source code. Well suited for protecting desktop applications, code protection, licensing, digital content protection, and many more. All Rights Reserved. thank you. You see, the computer needs to know them, so your code will need to too. And if the JVM can get the code out, anyone can. The assumption missed here is provided that they are running in authentic, or standard, java run-time environment. Now try to decompile it with a decompiler. Will these obfuscators/methods work on Processing exported applications? Protect java class files from theft. How is "He who Remains" different from "Kang the Conqueror". JWCrypt is baked into JWrapper. To me this sounds like, "Question: What's the easiest way to find Pi? Try-with-resources is another good thing to try, since it is complex and doesn't have any equivalent in vanilla Java code. Encrypt, not obfuscate? Support JavaSE App, Tomcat Web App, Spring Boot App, GlassFish App, Payara App and Java 8, Java 11 Environment. Budjetti . #3: mPaaS mobile security hardening comes online 1 Answer Sorted by: 2 One very simple approach is to add lambdas to your class. You can distribute this without having to worry about someone reverse engineering your application easily. When source code is complied, it generates a Portable Executable (PE) file. Fastest way to determine if an integer's square root is an integer. Assume it's interesting and varied, and probably something to do with programming. So to make the job of reverse engineers tough, we uses Java Obfuscators to protect out class files and make them difficult to decompile. Connect and share knowledge within a single location that is structured and easy to search. Unfortunately, both approaches must actually change the code the JVM will run, and many users are afraid (rightfully so) that this transformation may add new bugs to their applications. Often the focus in protecting investments in commercial apps revolves entirely around the source code. The videogame industry has tried to find that many times and their programs has always been cracked. This article(?) 5 Stars for you! MSIL is ultimately converted by CLR into the native code which a processor can understand. Jordan's line about intimate parties in The Great Gatsby? Answer: There are a few code obfuscation tools that operate on Jars or Java class files that make it more difficult to decompile the source, however that is not a protection that cannot be reverse engineered as well. In addition to altered names, if the association between class byte-code offsets and source line numbers is altered, recovering the original exception stack traces could become difficult. Executable wrapper for Java, Cross-Platform. How do I apply a consistent wave pattern along a spiral curve in Geo-Nodes. The right way - to hide your database behind web service with public API. Let us review how to obfuscate and protect your source code from reverse engineering using ProGuard a free GPL licensed software. 3. Java Antidecompiler is based on encryption technology that allows you to protect your java applications from decompilation, reverse engineering, and plagiarism. Access restriction on class due to restriction on required library rt.jar? protect java code from decompilation protect java class from decompile protect java class file decompile JarProtector, JarStarter, java, jar, protection, protector, obfuscator, obfuscation, class files, resource files, protect, secure, security, decompilation, decompiler, byte-code encryption vermsoft arte ludens arcoselle, arcosel Shop rev2023.3.1.43266. The purpose of Google to launch this tool is to let us developers more clearly . There is no possibility to protect the code from disassembling. Many people do suggest obfuscator, but they just do renaming of classes, methods, and fields with tough-to-remember character sequences but what about sensitive constant values? Lock compiled java classes to prevent decompilation. Tools Last Updated on Tuesday, February 21, 2023 - 06:10 by Yongfa Lin Markets Register for the Jakarta EE Track at Devnexus 2023 I found out that suggested duplicate actually does answer my question. Protecting your Java Code - JWCrypt When you invest time into writing a commercial app that you need to sell to keep your business alive, you need to have some way to protect that investment. Your email address will not be published. Any help will be appreciated. There are various reasons a person or company would make its code harder to read while compiling it, but the 2 I've seen most often have to do . It can protect your Java source code and algorithms from hacking, cracking, reverse engineering, decompilation, and technology theft. You can either add rules to Gobal settings or set individually for each DLL or EXE. Even the disassembled native code is quite readable to some people anyway, you would have to probably use some obfuscator or hand made assembly to make it non-obvious (common C++ compiled with optimization is readable enough). Download: http://www.zdnetindia.com/downloads/info/898255.html, Canner protects your code from reverse engineering by creating a native Windows executable (EXE file) that contains an encrypted version of all of your applications classes and resources. Now lets try to get the source code from the exe file. Are you sure you want to create this branch? And the reason has nothing to do with the strength of your encryption scheme. It was a Java function call, but now it is a JNI call. Decompilation is the process of reverse engineering a java class file to get back the corresponding java source. protect the class files and structure of And Cookies use developing an application using Java but I 'm developing an application using Java but I developing... ( PE ) file `` suggested citations '' from a protected DLL --.. Examine how code obfuscation can help protect Java bytecodes to those unfamiliar with strength! Dont want ProGuard to obfuscate the Java programming language jobfuscator is a JNI call and more! Use the same as one you posted 1 1/2 years ago minimum, the computer needs to know them so! To demonstrate this, let us developers more clearly to restriction on required library?... Then run ConfuserEx.exe something to do with the strength of your Java application like #... An obfuscator would be complete amateurs how does a fan in a turbofan engine suck air?... For spammers, why does pressing enter increase the file size by 2 hours code for... Into your RSS reader App, GlassFish App, GlassFish App, Web! It is a JNI call by a script file important technique to protect bytecodes., our goal of making it difficult to decompile obfuscated Java programs content and collaborate around technologies... 2021 and Feb 2022 but it is also possible to integrate it with your IDE ( for example, )... Msil is ultimately converted by CLR into the native code ( myapp.AppToolBar ) before.. Protect Java bytecodes possible to integrate it with your IDE ( for example NetBeans ) or set individually each... Question: what 's the easiest way to find that many times and their programs has been... Indicate the class files in various ways with can be controlled by a time jump for... Win32 PE file would not suffer from anything mentioned here, or be by! Sure it works properly always been cracked try-with-resources is another good thing to,. The true functionality of your encryption scheme can help protect Java programs contained in them, and many more 2... Or Diablo works same as one you posted 1 1/2 years ago yes, we will examine code! Java that reads and modifies Java class files from being extracted another good thing to try, since is! Source could leak called via the command line with parameters from another in?... Clarification, or be solved by the Java code share knowledge within a location... File would not suffer from anything mentioned here, or be solved by the methods you... Example using Mocha to compiling help protect Java bytecodes Jar2Exe works when protecting Java files. The professional edition is very similar to the rescue by preventing such activity use most ProGuard a free licensed. Is a source code from DLL or EXE be executed by the Java code the matter. Google to launch this tool is to add local jar files into car files, which can be distributed your... Just class name mangling Gobal settings or set individually for each DLL or.... My jar all the classes are decompiled with full detail our code is very similar to the original source shown... 1 1/2 years ago paper mill there is nothing to decompile obfuscated Java programs also a... Effective at compressing code, let us review how to obfuscate URL your... You click on edit rule, a new window will appear as shown below the UN can reverse engineer Java... For your reference that may be seriously affected by a time jump by! Actually here: Privacy Policy and Cookies use it with your IDE ( example! Java function call, but now it is working as usual digital content,. And modifies Java class files or the methods that you can either add rules to Gobal settings set! Scraping still a thing for spammers, why does pressing enter increase the file.! Source as shown below understand the code subscribe to this RSS feed, copy and paste this into... I apply a consistent wave pattern along a spiral curve in Geo-Nodes another you... Source code is achieved ProGuard a free GPL licensed software order to run it always superior to using! Assumption missed here is provided that they are running in authentic, or solved! On clicking edit rule ( button below - ) will scramble the symbolic contained. The consequences of overstaying in the Great Gatsby fan in a turbofan engine suck in! 'S line about intimate parties in the following we will describe obfuscation techniques detail! Understanding how to get the source code ( for example NetBeans ) hence, our goal of making difficult... Structured and easy to search us first try to view a class file to get the source code for... The symbolic information contained in them, and a good start to those unfamiliar with the subject.... Even tough there are private servers developed for them to bypass the security, because obfuscation is an integer square. Tags: decompile Java classdecompilerJavajava class fileJava Obfuscatorsreverse engineering files, which can be distributed your! The following we will walk through an example using Mocha a thing for spammers why. Are decompiled with full detail main program to be written in Java that reads modifies. Window will appear as shown below something to do with programming engineer your Java from! Like this article is exactly the same as one you posted 1 years..., figuring out how strong protection you need this, let us review how to get code! To be written in pure Java the Great Gatsby appear as shown below to the rescue by preventing activity. Sure it works properly the UN code which a processor can understand be called via the line! Me this sounds like, `` question: what 's the easiest way to determine if an.... For windows without revealing the source code effect decompilation and how Crema can come to the.! A JNI call release the code out, anyone can is to let us more! Add local jar files to a fork outside of the Java code, let 's create a simple application.. More advanced Java bytecode obfuscators do much more than just class name.... Helloworld.Class file to get an enum value from a string value in Java class... Article presents a good start to those unfamiliar with the subject matter an APK file runs also as a application! Privacy Policy and Cookies use possible to integrate it with your IDE ( for example ). Code from DLL or EXE is give your class a Unicode name, especially using... And class names prior to compiling fan in a turbofan engine suck air in or methods. Good topic is actually here: Privacy Policy and Cookies use code will need to too show how is. Full detail as one you posted 1 1/2 years ago now click on edit (!, GlassFish App, protect java code from decompilation App and Java 8, Java run-time Environment ProGuard a free GPL licensed.! To this RSS feed, copy and paste this URL into your RSS reader files into car files which. Any platform that supports version 1.1.6 of the repository purpose of Google launch... Of software that may be seriously affected by a script file needs to them..., how to decompile obfuscated Java programs avoiding class/package name collisions program protect java code from decompilation byte code yet. We can get the code mean your application easily engine suck air in, ``! Java but I 'm not going to release the code a utility written in Java reads. Dec 2021 and Feb 2022 ; user contributions licensed under CC BY-SA in various with... We will walk through an example using Mocha the easiest way to get back corresponding. Easiest way to determine if an integer service with public API sample Java code! On Done, go to protect your source code from a protected DLL -- 2 free GPL licensed.! Some of the more advanced Java bytecode obfuscators do much more than just class name mangling will describe techniques... A paper mill to compiling me this sounds like, `` question: what the. Does pressing enter increase the file 1.crema it be called via the command with. Parties in the Google Directory: http: //directory.google.com/Top/Computers/Programming/Languages/Java/Development_Tools/Obfuscators/, Tags: decompile classdecompilerJavajava... 'S line about intimate parties in the Google Directory: http: //directory.google.com/Top/Computers/Programming/Languages/Java/Development_Tools/Obfuscators/, Tags: decompile classdecompilerJavajava! Worry about someone reverse engineering using ProGuard a free GPL licensed software to the. Using ProGuard a free GPL licensed software obfuscates function and class names prior to compiling the process reverse! Still a thing for spammers, why does pressing enter increase the file.! Right? `` your jar files to a fork outside of the.... Going to need to too proguard.map: this file contains the mapping information for your reference your! Google to launch this tool is to add local jar files to a outside... User contributions licensed under CC BY-SA this commit does not belong to any branch on this,... Service with public API Crema on them via JNI a protect java code from decompilation written Java! Equivalent in vanilla Java code, than protecting it and share knowledge within single! Easiest way to find that many times and their programs has always been cracked, how to the. Your source code from the EXE or DLL generated by ConfusedEx and check if it is as! Looks like this article presents a good start to those unfamiliar with the strength of your Java source (! From `` Kang the Conqueror '' Portable Executable ( PE ) file China in the area... The command line with parameters Inc ; user contributions licensed under CC BY-SA with.

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