Challenge of Reverse Engineering
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BinaryShield (Custom VM) This is my first attempt at a binary protector. Currently, the VM has very little protection, so this should be good for those interested in learning about VM-based obfuscation. I intend on uploading new challenges that feature my protector as I add more features. GOAL: - You must find the correct key. Simply patching to get a goodboy message is NOT allowed. - Bonus points for devirt and explanation of your approach. - MOST IMPORTANTLY, have fun! :) File Information Submitter ra1n Submitted 09/23/2024 Category CrackMe View File
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- 5 replies
- 7.2k views
- 2 followers
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Eazfuscator.NET v2025.01 File protected by eazfuscator v2025.01 having Code Virtualization enabled. Find registration combination and reply it with the success message! File Information Submitter whoknows Submitted 07/22/2025 Category UnPackMe (.NET) View File
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- 13 replies
- 4.1k views
- 2 followers
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The Enigma Protector v7.50 (x32 & x64 DEMO) This is an encryption example using The Enigma Protector 7.50 encryption. Enigma 7.5_x64_DEMO.rar TEP_7.5x32_DEMO.rar File Information Submitter lengyue Submitted 04/29/2024 Category UnPackMe View File
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- 16 replies
- 10.6k views
- 2 followers
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Nuitka 2.1.5 (Python 3.11) Hi Nuitka compiled python 3.11 file Correct password doesn't important Just patching Thanks File Information Submitter Sh4DoVV Submitted 04/18/2024 Category CrackMe View File
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- 7 replies
- 7.7k views
- 3 followers
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EAZFuscator .NET 2022.2 Max Preset (BlackHat) - Updated 04/06/22 Update 04-June 2022 Version 2022.2 Unpack Password - BH2022.2 Old 2022.1 Info - This unpackme is protected with latest version of EAZfuscator = https://www.gapotchenko.com/eazfuscator.net/features Password to unpack = EAZ2022 (I made a RAR file with password protection because I was unable to upload the unpackme directly. I was getting error due to false virus alarm) Your job is to unpack the file fully. Partial unpacking won't be accepted. File Information Submitter BlackHat Submitted 03/30/2022 …
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- 16 replies
- 22.8k views
- 4 followers
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C++ x64 Protection [ Crackme ] C++ x64 Protection Compiler: C++ (x64) Protection: Heavy obfuscation (control flow flattening, opaque predicates) Full code virtualization (custom VM with unique opcode set) Anti-tamper checks (integrity verification, debugger detection) Encrypted string/table storage Custom packer layering the entire binary Challenge: This is a server-client authentication system protected by a custom packer. The client executable performs login validation by communicating with a local/emulated server component. Goal: Patch the client to bypass authentication OR Emulate the server to allow successful login with any credentials You are free to choose either…
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- 0 replies
- 534 views
- 1 follower
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r00t0 KeygenMe v4 Difficulty: 5 Language: C GCC Platform: x64 OS Version: Windows 10+ Packer / Protector : Selfmade Description : Implement keygenme that generate a serial derived from a nickname. Also demonstrate a generator that, given a nickname, produces the correct serial. I used my own tool that I've been developing for two years. It started as an optimizer, but I’m now experimenting with the reverse idea — using it to help with obfuscation and code retranslation. File Information Submitter r00t0 Submitted 11/02/2025 Category KeygenMe View File
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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 File Information Submitter boot Submitted 06/21/2023 Category UnPackMe View File
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- 47 replies
- 24.4k views
- 8 followers
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Hello everybody Here's a simple unpackme The File is packed with Dotnet Protector last version Enjoy ! EDIT : the new unpackme is attached here Protected.rar
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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
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- 21 replies
- 25.5k views
- 3 followers
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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
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- 45 replies
- 59.4k views
- 5 followers
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Packed: VMProtect 2.x http://www.mediafire.com/?g97n6es3rc36452
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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
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- 24 replies
- 25.1k views
- 2 followers
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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…
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- 2 replies
- 5.8k views
- 2 followers
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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
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- 25 replies
- 23.5k views
- 4 followers
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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…
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- 103 replies
- 40.7k views
- 3 followers
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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 …
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- 0 replies
- 1.8k views
- 1 follower
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[unpackme] Agile.NET unpack me Agile.NET 6.2.0.16 AgileNETUnpackMe.zip
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- 10 replies
- 13.9k views
- 1 follower
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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
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- 4 replies
- 4.7k views
- 1 follower
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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
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- 7 replies
- 23.8k views
- 1 follower
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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
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- 11 replies
- 8k views
- 2 followers
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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
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- 14 replies
- 15.1k views
- 3 followers
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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
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- 6 replies
- 6.3k views
- 2 followers
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.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
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- 19 replies
- 22.4k views
- 3 followers
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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
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- 8 replies
- 5.7k views
- 1 follower
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