Challenge of Reverse Engineering

View File PELock DialogBox It's a PELock'ed file. Try to unpack it if you have time, if you are a skilled code reverser or the author, you maybe can do it. Thank you for your effort in advance. Submitter The Binary Expert Submitted 01/12/2022 Category UnPackMe  

Language : .NET Platform : Windows x32/x64 OS Version : All Packer / Protector : Anti Dump + IL Protection + Enigma Protector 3.50 Description : You need to unpack and change the Text. "Tuts4you Special Unpack Edition" Screenshot : UnpackMe by Lucifer.exe

View File NETBuilderInjection + VMP I took my NETBuilderInjection and turned it into a Protector, but I don't know how secure it is. (For me, it's safe enough.) So I made this little program, The objectives are: [Unpackme] You should unpack it and get the cleanest code possible. [Crackme] In the textbox where the HWID is displayed you must modify the text and write something else in it. [Bypass] You will need to disable "Falcon Anticheat" from the executable. ---------------------------------------------------------------------------- Difficulty : Unknown Language Base : .NET Platform : Windows - .NET Framework 4…

Difficulty : medium Language : c# Platform : Windows x32/x64 OS Version : All Packer / Protector : BEDS 4,5 Description : unpack and tell how fast did you unack it and the way if possible Screenshot : ConsoleApp1.rar

View File Safengine Licensor v2.3.4 过程式编程语言，所以IAT和资源很少 Safengine License 2.3.4 with medium protection options enabled. Program is written in assembly language so there are very few IAT and resources. Submitter kuazi GA Submitted 11/12/2023 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)  

View File Themida v2.4.6.30 This is a .NET executable with a Goland DLL packed with Themida. Try to unpack the executable, dump the bundled DLL then fix the DLL to make it work. Once completed detail the methods used and how you fixed the DLL. Submitter despy3 Submitted 12/17/2020 Category UnPackMe (.NET)  

View File Bypass MessageBox Without Unpacking Bypass MessageBox without unpacking, task complete. Submitter 2days Submitted 07/15/2023 Category CrackMe  

View File Eazfuscator v2021.1 Unpack and/ or provide a valid serial. Archive password : superfrog Submitter whoknows Submitted 07/14/2021 Category UnPackMe (.NET)  

Here is a recent challenge by SK2K7 that was posted at a friendly forum, permission to post here was given by author since I happen to be the tester , the good news is it's yet to be solved, the bad news is it has plenty of cryptos inside, hope you enjoy this one. Patience_Is_A_Virtue.rar

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 CheckMePlease This crackme is created with Qt v4.8.4, The goal of this crackme is to make the CheckBox checked, not to only pass the check when the Check button is pressed. There is also the options of creating an program which will change the state of CheckBox. I don't think is trivial task: I can't even enumerate windows. Submitter CodeExplorer Submitted 12/20/2020 Category CrackMe  

Difficulty : 3,5 Language : C# Platform : Windows OS Version : All Packer / Protector : ConfuserEX 1.0 Modified Description : I am testing an anti de4dot and others ... If possible I would like to know the process you have done. Screenshot : Holly shit.exe

Hi, All. Here are three unpackmes Protected by Safengine v2.2.1 From 'JC'. Some information about these UnpackMes. "default.exe" is Protected by Safengine 2.2.1 default options. "Middle.exe" is the Secondary protection options (somebody chose) Protected. "LOL.exe" is the Maximum protection options (somebody chose) Protected. Then,you will see some new tricks in this version ('JC' said)... Thanks to 'JC' for the sample he provided. Anyway hope All you will like it. You can grade for the three samples. SE2.2.1.rar

Language : C++ Platform : Windows x86 OS Version : Windows Packer / Protector : none Description Gold: A Simple CrackMe Solve the missing key. Bronze: If u don't find key - Patch it.  Screenshot Crackke.exe

I have made a little unpack-me with the demo version of Enigma 3.90 Enigma 3.90 unpackme_t4y.rar

Language : .NET Platform : Windows [x32/x64] OS Version : Windows 10 Packer / Protector : ConfuserEX Custom [Dark Protector Mod] Description : Unpack the exe to find the key! If you would give a brief explanation on how you unpacked it. The exe has max protections and will pop up a messagebox once you enter the correct password. Protections Added to this Unpack Exe: Junk Code, Anti De4Dot, Anti Debug, Anti Dump, Anti ILDasm, Anti Tamper, Calli Protection, Constant Dis, Constants, Control Flow, Hide Methods, Invalid Metadata, MD5 Checksum, Mid Ref Proxy, Mutate Constants, Mutations, Module Flood, Reference Proxy, Renamer, Resources, and Stack Underflow…

Difficulty : 5 (I think) Not sure Language : Visual C++ 6.0 Platform : Windows x32 OS Version : Windows All Packer / Protector : Obsidium v1.6.1.9 Description : This is just one of my program protected The objective is unpack it. Screenshot : CompareInfo_Obs.zip

View File Armadillo x64 v9.64 (General/Default Protection Options) Unpackme - Armadillo x64 v9.64 | WwW.Tuts4You.CoM General/Default Protection Options = HWID Lock + etc... If you can unpack it, please make a tutorial... The compressed package includes a simple MP4 display, please pay attention to check... HWID:87DF-0E78 NAME:boot KEY:000016-M9KY7Y-1PM436-8JKH7H-G8QXCH-3ACEGN-Y5ND6B-TY4VJ2-5FX1WY-WGJBFB After seeing the dynamic screen, please click the LEFT MOUSE button to exit OR press the "ESC" button once to exit. Created by boot / From Tuts4you 2023.06.19 Submitter …

PC Guard 5.0.1.580 DEMO PC_Guard_5.0.1.580_DEMO.rar If anyone is interested in this they will have to post their site code here and I'll generate an activation code... Ted.

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 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 v3.6 Hi all, This is a protected with the RETAIL edition... Mutation / Virtualization w/ the built in VMProtect license system. 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 06/24/2022 Category UnPackMe (.NET)  

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

View File VMProtect v3.4.0.1155 Try to unpack or alternatively provide a serial. If there is no solution provided by Saturday 11am (GMT+0) I will attach the same without debugger detection. Protections used: Debugger detection (User-mode + Kernel-mode) Ultra (Mutation + Virtualization) Disabled protections: Virtual Machine Packer Submitter whoknows Submitted 05/19/2020 Category UnPackMe (.NET)