Challenge of Reverse Engineering

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. File Information Submitter Teddy Rogers Submitted 02/23/2020 Category CrackMe View File

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ra1n

July 29, 20214 yr

WinLicense v3.1.3.0 x86 (All Protection Options) UnpackMe - WinLicense 3.1.3.0 x86 Full Protect HWID Lock + Entry Point Virtualization + Etc... HWID: 1111-2222-3333-4444-5555-6666-7777-8888 Author:boot From:Tuts4you Time:2023.04.02 File Information Submitter boot Submitted 04/02/2023 Category UnPackMe View File

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• 112 replies
• 63.1k views
• 6 followers

hamzadutsher

Monday at 12:14 AM2 days

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

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• 72 views

fReestYler

Sunday at 08:00 PM2 days

MD5 KeygenMe Hint: MD5(UsernameUpper + ':' + salt), take first 16 hex chars, format as XXXX-XXXX-XXXX-XXXX. File Information Submitter otmanov Submitted 09/20/2025 Category KeygenMe View File

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• 949 views

otmanov

September 19Sep 19

Packed: VMProtect 2.x http://www.mediafire.com/?g97n6es3rc36452

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lemoncup

September 19Sep 19

[ Crackme ] Unknown .NET Protection [ VM ] Hi, First of all i have to say " this is not my project and some friend ask me to upload challenge here " Compiler : .NET Protection : [+] Binary Obfuscation [+] Code Virtualization [+] Anti-Debugging / Anti-Tampering [+] Maybe some other protection Rule : Patch file to accept any password or find real password ( both accepted ) i will appreciate if you write something about you have done Hint : Run & Analyze file inside VM or isolated environment becuase of file isn't mine so i'm not responsible for anything Regards File Information Submitter Gladiator Submi…

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Gladiator

September 15Sep 15

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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• 4 replies
• 6k views
• 2 followers

ra1n

September 13Sep 13

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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• 6 replies
• 6.5k views
• 3 followers

trojanx

September 11Sep 11

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
• 22.1k views
• 2 followers

Nooboy

September 7Sep 7

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
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boot

August 31Aug 31

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
• 21.9k views
• 4 followers

0xman

August 29Aug 29

Difficulty : (3-4 Maybe?) Language : (C# .NET) Platform : (Windows) OS Version : (Windows 10) Packer / Protector : (FujiFuscator) Description : Please give me a detailed tutorial on how you unpacked this. Screenshot : UnPackMe.exe

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• 15 replies
• 22.8k views
• 1 follower

0xman

August 28Aug 28

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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• 44 replies
• 56.5k views
• 5 followers

extonoxt

August 17Aug 17

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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• 11 replies
• 2.3k views
• 2 followers

whoknows

August 16Aug 16

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. File Information Submitter lovejoy226 Submitted 06/17/2024 Category UnPackMe View File

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• 32 replies
• 16.1k views
• 5 followers

ianything

August 12Aug 12

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
• 36.9k views
• 3 followers

ianything

August 12Aug 12

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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yutijang

August 10Aug 10

[unpackme] Agile.NET unpack me Agile.NET 6.2.0.16 AgileNETUnpackMe.zip

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• 10 replies
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• 1 follower

extonoxt

August 8Aug 8

.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 File Information Submitter whoknows Submitted 06/26/2025 Category UnPackMe (.NET) View File

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• 9 replies
• 3k views
• 2 followers

Rextor

August 8Aug 8

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
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iced

August 8Aug 8

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
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VB56390

August 3Aug 3

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
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iced

August 1Aug 1

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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• 18 replies
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etness

July 25Jul 25

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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• 42 replies
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iced

July 23Jul 23

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
• 14.7k views
• 3 followers

extonoxt

July 20Jul 20