Challenge of Reverse Engineering

View File Themida x32 v3.1.8.0 The Entry Point is virtualized. 2 Parts of the codes are also virtualized. [Your Mission] Just unpack this file and make it run well without any errors or termination. No devirtualiztion are necessary. Submitter New Year - New Mind Submitted 02/12/2025 Category UnPackMe  

View File Obsidium v1.69b1 x86 (All Protection Options) Obsidium v1.6.9.b1 x86 = All Protection Options = HWID lock + etc. This unpackme (VB6.0) is created by me. If you can unpack it, please make a tutorial... 2023.06.07 Submitter boot Submitted 06/07/2023 Category UnPackMe  

View File 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! Submitter freddy Submitted 02/07/2025 Category CrackMe  

View File 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. BinaryShield source code: https://github.com/connorjaydunn/BinaryShield 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! …

Difficulty : 5 Language : NET 2.0(C#) Platform : Windows x32/x64 OS Version : Windows 7,8,10 (All windows with .NET Framework 2) (if not work you need some VCRedist runtime´s ...) Packer / Protector : Protection scheme from C# code to UPX: Skater Obfuscator (Max Settings) > Net reactor (Max Settings !Without control flow) > UPX(2.29 - Max Settings) Description: You said the protection was weak. So I prepared something a bit more challenging. I wonder if someone can get to the original c # code. Everything is allowed . Try to get part of the code where I verify individual parts of the license key&and of course crack this.. And if it does, i…

Language : AutoIt Platform : Windows OS Version : XP to 10 Packer / Protector : None Description : If you succeed, you will receive a message. Screenshot : If you find the right word, there will be a label that means you've succeeded. https://www.virustotal.com/gui/file/6c751af7d8226a81e173ef6294ee9e1dd2c35eeb65149e3b515bb8c0b3463038/detection CrackMeV1.zip

Ok, learning from my flaws/weaknesses from the previous version, I've come up with a more aggressive CrackMe, Hence the name (Enhanced) hopefully will give you a nice time to think out of it and see what it does or what it has Skill Level: Experienced Reverser Only~! (Even though it's easy) Objectives: Successfully Deob & Find the Password. DL Mirror: https://mega.nz/#!HooxwJQI!tSj_tQdUdItu0MZNbb_apbcVEJKRjYkMNA7IiYme6AU Scan: https://www.virustotal.com/en/file/a3e5999753f747e04b06955688f2c9157620d91574ec12768759b12cfe1ee57d/analysis/1441686353/ Protections: I've used many encryptions for this one, Many Obfuscations and Many …

View File Easy CrackMe (YeetFuscator) Language: C#(.Net) Goal: to get the key of obfuscated file Key on the screenshot is wrong, you have to crack this CrackMe and send key with tutorial on how did you do that. Submitter Alex0 Submitted 07/02/2021 Category CrackMe

View File .NET Reactor v6.9 File packed with .NetReactor 6.9 -- All options Submitter AarJee Submitted 07/19/2023 Category UnPackMe (.NET)  

View File Simple C++/CLI Mixed Assembly KeygenMe Your goal is to create a keygen and make a tutorial and/ or write instructions about the steps done by you. What is C++/CLI? C++/CLI is C++ support .NET framework to make managed application run on .NET framework. https://en.wikipedia.org/wiki/C%2B%2B/CLI Feel free to post your solutions. Submitter SuperJackAbcd Submitted 02/05/2022 Category KeygenMe  

View File MD5 Hash Keygenme This is a simple MD5 Hash keygenme. It is protected with the themida. Submitter New Year - New Mind Submitted 02/11/2025 Category KeygenMe  

View File 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. Submitter Gladiator Submitted 02/07/2025 Category KeygenMe  

View File 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 Submitter boot Submitted 04/02/2023 Category UnPackMe  

Language : C++ Platform : Windows OS Version : Windows 10 Packer / Protector : Themida 3.0.3.0 Description : Looks like Oreans just dropped Themida 3. They've been working on the beta version for more than a year and just announced the initial release, so I'm praying I don't get my personal license revoked :^( Strings are (supposedly) virtualized then encrypted. The main protection is starting at VM_DOLPHIN_RED, though other VMs can be requested. Unpack/devirtualize the file. Screenshot :  Themida Crackme_protected.exe

View File VSEC KeygenMe Simple Code Virtualization KeygenMe ( Not Commercial VM ) Try to find Algorithm and make correct key It's not too hard Your opinions about VM Complexity are welcome. Thanks Submitter Gladiator Submitted 02/05/2025 Category KeygenMe  

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 …

View File ByUndefined Protector + Enigma ByUndefined Protector + Enigma Anti Debugger Anti Dump Anti Tamper Anti ILDasm Resources Compress String Encrypt ControlFlow Virtualization Purpose: You need to patch or unpack the correct key. Submitter Leopar36 Submitted 01/23/2025 Category UnPackMe (.NET)  

Difficulty : 3 Language : Delphi Platform : Windows X86 OS Version : XP and above Packer / Protector : Enigma Protector 5.2 Description : Small unpackme for you guys to try. Screenshot : Enigma Protector 5.2 unpackme.rar

Difficulty : 7 (I think) Language : .NET Platform : Windows OS Version : Windows 7 and up Packer / Protector : eazFuscator 2018.2 Description : Hello, here I am again 👋. After last and first attempt in the KeygenMe-Section, I tried to put more attention on packing my code harder. I've tried to understand and mod the open source obfuscator ConfuserEx but never got the result I was anticipating. (All the unpackers unpacked them with ease no matter what I added/changed 🙄). So I shifted my attention towards the commercial obfuscators and oh boy the pricing on these.... I've tried NetGuard, Babel, NetReactor,.. and so on. On some of these there were still vir…

View File Themida x32 v3.0.4.0 One of my tool (CompareInfo v3) protected by Themida x32 v3.0.4.0. Submitter CodeExplorer Submitted 04/01/2023 Category UnPackMe  

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…

View File VirtualGuard v1.0 This file is protected by the first version of VirtualGuard. VirtualGuard is an obfuscator I develop that I am trying to receive some stress testing on I hope this VM makes people think at least a little bit; It's fairly close to 1:1, however I do believe I do some interesting things with comparisons and branching. Haven't seen it anywhere else. Let the record state this is not a "mod" of any other vm, so if you are interested in seeing some new stuff this is for you. This sample contains some fairly simple branch offset mutations, at first glance it may be a slight "wtf moment" (at least I hope), but …

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 The Enigma Protector v7.70 (x32 & x64) This is an example program I used to shell The Enigma 7.7. You can shell it, bypass it, PatchHWID, KeyGen to make it run normally. Of course, it would be best if the shell could be peeled off.Have fun! https://workupload.com/file/EGgppWamMA6 Cracked: Submitter lengyue Submitted 11/24/2024 Category UnPackMe  

View File The Enigma Protector v7.60 (x32 & x64) Example of Shell Addition for Enigma 7.60. This is a different example from the past, interested friends please challenge. Unpack, cracking or Patch HWID. Use your means to make it work correctly. TheEnigma_7.6_x32&x64Example_protected.rar Submitter lengyue Submitted 08/28/2024 Category UnPackMe