Challenge of Reverse Engineering

View File Example CrackMe - Debug Blocker x64 This is an example for submitting a CrackMe in the Downloads section of the site. You can download the file and run Debug Blocker x64. Nothing too exciting will happen! The challenge here would be to patch the debug-blocker function so that it does not spawn a second process. Submitter Teddy Rogers Submitted 02/23/2020 Category CrackMe

View File crackme123 A "Crack Me" challenge created by lord "Voksi" , a well known person in the "warez" scene. And no, this challenge is not uploaded by "Voksi" himself, it's uploaded via a proxy which is myself, an old friend of "Voksi" . GOAL: Obtain the Correct key Greetings to MasterBootRecord, Voksi, FJLJ, And also a few others, you know who you are ❤️ Submitter casualPerson Submitted 07/04/2025 Category CrackMe  

View File Python Obfuscated KeygenMe I have provided a zip archive which contains two .py files, as seen in the screenshot. In LicenseChecker.py there is a validation function invoked by main.py where you put the key in the given format. The python code is obfuscated using a obfuscator I'm currently working on. If you solved the challenge, or have any feedback to give, or need hints/help with reversing without spoiling, please let me know. Thanks. You can see original source code and the solution in the 'Authors Code' and 'Authors Solution', if you wish. Good luck! Submitter …

View File .NET Reactor v7.3 (Embedded DLL's) File protected by .NET Reactor v7.3 having Code Virtualization enabled. By nature the application using Dependency Injection (this time heavily developed), the 3rd party files embedded to main exe (see shot2), in addition System.Data.SQLite.dll lying near application. Find registration combination and reply it with the success message! Custom antidebugger Submitter whoknows Submitted 06/26/2025 Category UnPackMe (.NET) …

View File Eazfuscator.NET v2025.1 File protected by Eazfuscator.NET v2025.1 having Code Virtualization enabled. By nature the application using Dependency Injection, the 3rd party files embedded to main exe. Find registration combination and reply it with the success message! Codebase improved a little bit versus reactor73 target. Submitter whoknows Submitted 06/24/2025 Category UnPackMe (.NET)  

View File .NET Reactor v7.3 File protected by .NET Reactor v7.3 having /Code Virtualization/ enabled. By nature the application using /Dependency Injection/, the 3rd party files embedded to main exe (see shot2). Find registration combination and reply it with the success message! Submitter whoknows Submitted 06/22/2025 Category UnPackMe (.NET)  

View File Safengine Licensor v2.4 (HWID Lock) I coded a simple Win x64 GUI application with a close button and protected it using Safengine Shielden v2.4. Challenge is to; bypass the hardware ID lock; unpack the application. Let us go together to solve this issue. Submitter The Binary Expert Submitted 06/11/2024 Category UnPackMe  

View File VMProtect v3.5.1 Hi all, This is a protected with the TRIAL edition... Mutation / Virtualization w/ the built in VMProtect license system. VMProtect Debugger detection - disabled. (apparently some C# lines added) VMProtect Trial limitation : user has to patch the file to run to his machine. There are 2 enter serial dialogs, once you solve the 1st, drives you to 2nd, when a valid serial entered exporting a file... If a valid serial entered on 1st form, is saved to license.diz file. Submitter whoknows Submitted …

GOOD LUCK UnpackMe & CrackMe .rar

View File VMProtect v3.8.1 Ultra (Mutation + Virtualization) The target is an old software (from 2010) coded in c++, I just apply the VMP protection without any special code as I show in the two screenshots. All available protection features in VMProtect were used with this unpackme. Refer to the attached images for the specific protection settings used. Challenge is to unpack the file, providing an explanation and details on your methodology. Submitter X0rby Submitted 04/17/2023 Category UnP…

View File Rika .NET Obfuscator v2025.04.07 About File: .NET Framework 4.8, 32-bit preferred Used Obfuscator: Rika .NET Obfuscator Latest Used Features: Code Virtualization & Anti Tamper Difficulty: 6/10 Goal: Find the Password or deobfuscate it competely. Submitter Fr0Mu Submitted 05/25/2025 Category UnPackMe (.NET)  

View File The Enigma Protector x64 v7.4 (HWID Lock) Two simple Win x64 GUI applications protected using Enigma x64 v7.4. Challenge is to; bypass the hardware ID lock; unpack the application. Let us go together to solve this issue. Submitter The Binary Expert Submitted 06/17/2024 Category UnPackMe  

View File DNGuard HVM v3.97 This file is protected using DNGuard HVM 3.97. Protections used : HVM Jit Challenge is to unpack and post details of methods used. Submitter 0x59 Submitted 01/02/2021 Category UnPackMe (.NET)  

Hi guys ! It's time to have some fun Protection: HASP HL Protection. Conditions: Fully unpacked & working file + Tutorial (that will be a favor) Duration: 12 days hasp_hl_unpack_me.rar

View File WinLicense v3.2.2 (Window Function Through an External Plugin) This is a WinLicense 3.2.2/sample, set by default, without adding an SDK in the source code, only adding a window function through an external plugin. I don't know if bypass can be cracked, I tested it and it doesn't. Shedding may be more complicated.Please use your own way to crack it. Whether it's molting, bypass, or keygen, they are all the best methods. No need to upload your proposal, posting a picture is the best answer. I will strive to learn towards your achievements. HWID：1031-E184-1D1E-92A8-AA82-151F-E2BC-34EE NAME：Mr.Leng .RegistCode:2FGP7NTY-22AMY4QL-XXEHAO…

View File TinyCrackMe - WinLicense 3.1.7.0 Edition === SPOILER INSIDE SOURCE CODE TAB === A WinLicense'd version of TinyCrackMe Rules: 1. Unpack first 2. Do whatever you want after unpack, as long as ":3" MessageBox appear :3 Just want to see how long ppl will crack the latest version of WinLicense... WL Protection: - Anti-Debugger - Advanced API-Warping - Compress And Encrypt (all 3 options) - Full Encrypt Strings - Detect File/Registry Monitor - Entry Point Virt - Anti File Patching - Perform Protection Check - VMware/Virtual PC Allowed WLVM: - SHARK32 (Black, Red) - PUMA32 (Black, Red) - EAG…

View File Themida v3.1.4 (x32 & x64) - Impossible Two files are protected with an old version Themida (3.1.4) Entry Point is virtualized Just find and restore OEP, recover the IAT and unpack if it possible Virustotal detects it as a virus, but my AV software is not Submitter fReestYler Submitted 05/11/2025 Category UnPackMe  

Here is a copy of Notepad protected with Starforce Pro 4.50.07.00 (build 29.01.07) http://www.tuts4you.com/blogs/download.php?view.1277 Give it a whirl... Ted. StarForce Pro 4.50.07.00 (Build 29.01.07).rar

This is a legal files to test the protection cracking. This file is intended by the company to experience crack the protection and is not intended for sale. This file was sent to me after I asked Star Force sent me to try Crack their protection. ------------------------------------------------------ Info: StarForce Audio/Video StarForce Audio/Video tool provides protection from unauthorized use of audio files (mp3, ogg, wma, wav etc.) and video files (avi, mpg, wmv etc.), intended to be viewed on a personal computer Moreover, this solution allows secure of DVD-Video format for either personal computer and DVD players use. StarForce Audio/V…

View File Themida & VMProtect (Same Virtualized Code Sections) I want you guys who are capable of unvirtualizing and unpacking them to upload the final ones. These files are just the same part of the codes virtualized which are 2 lines of the original mfc source codes. So if you can unvirtualize them and unpack them, please upload the final ones. Any other protections are excluded absolutely. Give it a try and improve your skills. Best Regards. sean. Submitter lovejoy226 Submitted 04/08/2025 …

View File VMProtect x64 v3.6 HWID Lock (All Protection Options) Unpackme x64 - VMProtect 3.6 HWID License (All Protection Options) VMP x64 SDK + HWID Lock +etc... WwW.Tuts4you.CoM https://forum.tuts4you.com/ If you can unpack it, please make a tutorial... I will mark the answers with tutorials as a solution. The compressed package includes a simple MP4 display, please pay attention to check... Created by boot / From Tuts4you 2023.06.21 Submitter boot Submitted 06/21/2023 Category …

View File ConfuserEx 1.6.0 Public key sample protected using ConfuserEx 1.6.0. https://github.com/mkaring/ConfuserEx/releases/tag/v1.6.0 Your challenge is to unpack and decompile the file. Submitter cipsi Submitted 02/04/2023 Category UnPackMe (.NET)  

View File ByUndefined Protector V3 ByUndefined Protector V3 Anti Debugger Anti Dump Anti Tamper Anti Memory Anti Dll Inject Anti ILDasm Resources Compress String Encrypt ControlFlow Virtualization Renamer Virtualization Updated Task: Unpack Submitter Leopar36 Submitted 04/03/2025 Category UnPackMe (.NET)  

View File ByUndefined Protector v2 ByUndefined Protector Anti Debugger Anti Dump Anti Tamper Anti Memory Anti Dll Inject Anti ILDasm Resources Compress String Encrypt ControlFlow Virtualization Renamer Merge Dll Add Task: Unpack Submitter Leopar36 Submitted 03/23/2025 Category UnPackMe (.NET)  

View File .NET KeyGenMe by Freddy #1 Hey there! I made this KeyGenMe because I enjoy playing chess. This challenge is written in .NET and involves some mathematical operations, mixed with a few chess-related twists. Your task is to figure out the logic behind generating a valid serial key based on the username you enter. But be warned—it’s not as simple as just moving a pawn forward ( maybe a hint ) Protection used : None. Goals : 1. Provide valid combination for Username - Serial Key ( Bronze ) 2. Fully KeyGen it - every username with different serial key algorithm ( Silver ) 3. Full KeyGen plus EXPLANAT…