Challenge of Reverse Engineering
Try a challenge or contribute your own, any platform or operating system...
The creation of new topics is disabled in these subforum categories.
Please create and post your new challenges in the appropriate subcategory of Downloads > Challenge of Reverse Engineering
A topic will then automagically be created and posted in these forums...
-
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. File Information Submitter X0rby Submitted 04/17/2023 Category UnPackMe View File
-
-
- 21 replies
- 24.7k views
- 3 followers
-
-
Language : C# .Net Platform : Windows x32/x64 OS Version : All Packer / Protector : Agile.Net v6.6 Description : Hi everyone, hope one of you friends can unpack the target and teach us how to unpack it Screenshot : Secured.rar
-
-
- 45 replies
- 58.7k views
- 5 followers
-
-
DotFix NiceProtect x32 v7.1 A Delphi file is protected with an old version DotFix NiceProtect (7.1) Original Entry Point is encrypted Just find and restore OEP, recover the IAT and unpack it File Information Submitter fReestYler Submitted 10/06/2025 Category UnPackMe View File
-
Packed: VMProtect 2.x http://www.mediafire.com/?g97n6es3rc36452
-
.thumb.png.fc7142b29c3dd4df273255241ae1f4be.png)
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. File Information Submitter cipsi Submitted 02/04/2023 Category UnPackMe (.NET) View File
-
-
- 24 replies
- 24.4k views
- 2 followers
-
-
VMProtectDDK v3.84 x64 No.2 2024 If you want to try this challenge, please read the following text descriptions: 1. Please try to debug the kernel driver in the virtual machine instead of your real machine to avoid causing a blue screen on the physical machine a. Why blue screen? For things like Ring0.sys, as I mentioned earlier b. Copy the Tuts4you.ini file to the C:\Windows\ directory of the virtual machine 2. I have added a test signature to the driver, so to load this driver, you need to enable Windows test mode a. Press and hold the "WIN+R" key to launch the CMD console as an administrator, enter bcdedit /set testsigning on b. Res…
-
-
- 2 replies
- 5.7k views
- 2 followers
-
-
Difficulty: 6/10 (Has max/all settings enabled) Language: .Net/C# Platform: Windows OS Version: All Packer/Protector: ConfuserEX Mod (Bed's Protector) Description: Unpack the tool and enter the correct string to display the messagebox. If you are successful I would like to know how you did it exactly, if you don't mind. Screenshot: UnpackMe.exe
-
-
- 25 replies
- 23.1k views
- 4 followers
-
-
This is an Enigma Protector_7.5 shell sample, whether it is Unpack, PatchHWID, or KeyGen, as long as it can successfully bypass registration, it is sufficient. Welcome friends to test, Using hardware ID encryption without popping up a registration box when changing computers, I think this one machine, one code solution is very challenging，I don't check anti virtual machine, but it cannot run on a virtual machine, which I find somewhat unbelievable..thank you. Insufficient forum member permissions, unable to post to the reverse challenge area. Sorry Name: tuts4you HWID: C16BF-8E2CA-FF15D-2CE16 KEY: BA23FLLESM75MTHXKU3Z8JNA3VJWLKCSZWV3PS76NAMJK5D3MRQ5ZYJ5ZPE9EKA…
-
-
- 103 replies
- 39.6k views
- 3 followers
-
-
AutoIt Custom Packer (Extract Image Files) Hello everyone, I'm a AutoIt developer, and I've created a small portable program that uses a custom packer to protect some assets. The program is written in AutoIt and consists of two files: M-Dl.exe and assets.zip. I'm looking for skilled reverse engineers to test the security of my custom packer. The Goal: The challenge is to extract the image files that are contained within the custom packer. I've designed the packer with my own security techniques and would love to see how it stands up against the community's expertise. Repository & Download: You can find the project repository on GitHub, including …
-
- 0 replies
- 1.7k views
- 1 follower
-
-
[unpackme] Agile.NET unpack me Agile.NET 6.2.0.16 AgileNETUnpackMe.zip
-
-
- 10 replies
- 13.8k views
- 1 follower
-
-
VSEC KeygenMe #2 VSEC KeygenMe #2 What you have to do: I hope peoples who interested in Reverse Engineering learns something from this type of challenges. Best Regards. File Information Submitter Gladiator Submitted 02/07/2025 Category KeygenMe View File
-
-
- 4 replies
- 4.5k views
- 1 follower
-
-
0x7 Protector (Beta) I would like you to test the obfuscator I am still working on developing. The goal is to unpack the file and provide your unpacking method. https://www.virustotal.com/gui/file/965c96b4e7a431635ab9f450cb89784791aec2eec27a204e195dece2fcce5f36?nocache=1 File Information Submitter Inx Submitted 11/11/2022 Category UnPackMe (.NET) View File
-
-
- 7 replies
- 23.7k views
- 1 follower
-
-
If you successfully cracked it , then you will see this Rules Only patch or cracked EXE is allowed. No keygen No serial fish />http://www.multiupload.com/O7MR1DZ38N Good luck . CrackMe.rar
-
-
- 11 replies
- 7.9k views
- 2 followers
-
-
Difficulty : 3+ Language : .NET Platform : Windows OS Version : Windows 7 and up Packer / Protector : Agile.Net Description : Protect with 90% feature, Good Luck Screenshot : DotNetV0.1.7z
-
-
- 14 replies
- 15k views
- 3 followers
-
-
VMProtect HWID CrackMe I have put all important information in HWID-License.txt. I hope you all come up with some fascinating solutions. If you want leave the solution and also if you want to show off you can do that as well! File Information Submitter freddy Submitted 02/06/2025 Category CrackMe View File
-
-
- 6 replies
- 6.2k views
- 2 followers
-
-
.NET Reactor v6.5.0.0 Try to unpack or alternatively provide a serial. Protections used: Necrobit Antitampering Antidebug Obfuscation Code Virtualization + Shield with SNK Whats new in .NET Reactor [6.5.0.0] 12-Nov-2020 Fixed 'Code Virtualization' issue New 'Anti Tampering' approach and more.. File Information Submitter whoknows Submitted 11/28/2020 Category UnPackMe (.NET) View File
-
-
- 19 replies
- 22.1k views
- 3 followers
-
-
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 ❤️ File Information Submitter casualPerson Submitted 07/04/2025 Category CrackMe View File
-
-
- 8 replies
- 5.5k views
- 1 follower
-
-
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! File Information Submitter musava_ribica …
-
-
- 5 replies
- 6.4k views
- 1 follower
-
-
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. File Information Submitter whoknows Submitted 06/23/2025 Category UnPackMe (.NET) View File
-
-
- 2 replies
- 2.7k views
- 2 followers
-
-
.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! File Information Submitter whoknows Submitted 06/21/2025 Category UnPackMe (.NET) View File
-
-
- 4 replies
- 3.3k views
- 3 followers
-
-
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. File Information Submitter whoknows Submitted 10/07/2021 Category UnPackMe (.N…
-
-
- 13 replies
- 22.4k views
- 2 followers
-
-
GOOD LUCK UnpackMe & CrackMe .rar
-
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: Deobfuscate & Devirtualize it competely. File Information Submitter Fr0Mu Submitted 05/25/2025 Category UnPackMe (.NET) View File
-
- 0 replies
- 3.4k views
- 1 follower
-
-
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. File Information Submitter 0x59 Submitted 01/02/2021 Category UnPackMe (.NET) View File
-
-
- 11 replies
- 21.7k views
- 1 follower
-
-
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
-
-
- 13 replies
- 10.9k views
- 1 follower
-
