Challenge of Reverse Engineering

Language: .NET Platform: Windows x32/x64 OS Version: Tested on Windows 10, with .NET 4.6.2 Packer / Protector: WinterStorm 0.1 (Personal Project) Description: Here is a project I've been working on for the last 6 months. It's a follow-up to my previous DynamicMethod attempts. This time I also included some simple JIT hooking. Everything here was written by myself, except a helper class for loading dlls from memory. I hope you'll find it entertaining. I can't wait to hear your thoughts. This is (arguably) the best iteration of the popular game, MineSweeper. Unfortunately, it's a demo, and it only allows for 5 moves. In order to keep playing you have …

Language : Delphi XE Platform : Microsoft Windows x32/x64 OS Version : XP/Vista/7/8/8.1/10 Packer / Protector : ArmoredBinary - Modern Binary Obfuscation Tool. Description : Attached file was protected with full version of armoredbinary obfuscator ( with medium protection approach ) , make sure unpacked file will execute successfully in any environment. You will dealing with OEP hiding , Resource Protection , Simple IAT Protection , AntiDump Tricks. Screenshot : Protected file after execution will be similar to Thanks. ArmoredBinary_Official_UnpackMe.rar

Platform: Windows Language: C#/.NET OS Version: Windows 10 (I only tested on it so) Protector: Modded ConfuserEx Objective: Modification to ConfuserEx; constants, math protection, variablesmelter, antide4dot (broked rn), three antidebugs (one inside antitamper), sizeof, antivm, antiemulator, antidnspy, antijustdecompiler, intergritychecking, typescrambler etc Unpack the file and find the password. Document how you deobfuscated it. https://www.virustotal.com/#/file/3cd889f4be35cb440f4a4a1c3ececc62a7075ccddeb76553e06ad12e96d94fe4/detection (false positive because of the obfuscation) If there are any errors in this thread or in my english, I a…

This is more of a confidince builder, so all you pro's dont laugh @ me too much Simple_PatchME.rar

Difficulty : 1 Language : VB6/C/ASM Platform : Windows x32/x64 OS Version : Windows XP/7/8?/10? Packer / Protector : None Description: Crackme developed with ThunderVB VB6 plugin.Every part of CrackMe is fully handled by its own language,C/ASM part even interact with form elements like Labels and TextBoxs strings to compare with correct ones with almost no help of VB6 code,has no any anti dump-debug,encryption or any other protection,easy Crackme,just like a ThunderVB proof of concept Crackme for fun,if you have any question feel free to ask,enjoy! Screenshot : Crackme.zip

Language : .NET Platform : .NET/Mono OS Version : All Packer / Protector : Custom Description : This is something I've stopped working on over the last few months, but if someone's interested in taking up the project with me I'll gladly accept. The original password is hashed to prevent string equality hooking, so the goal here is just to make it respond correctly. Cracking : If you do crack this, please post in the thread (or DM me) about how you did it. It doesn't have to be step-by-step; a simple "after doing X all you need to do is Y" is fine. If you have any suggestions for additional obfuscation, please include those as well.…

Language : C# Platform : Windows (7,8,10) (x32) OS Version : Windows 7,8,10 (No virtual machine!!!) Packer / Protector : Eddy^Protector 1.0.5 Description : Hello all. I want introduce my hard work. Please try, run and unpack this challenge. Its not confuserEx another mod. Only experienced reverser can unpack this. Sorry if not working for you. For me works, and on many stable OS´s too. And if you have error (0xc00000005) , simply run again it works on next try.. Sorry i have no time to solve that memory leak. Good luck! AV scan: https://www.hybrid-analysis.com/sample/a5f287aeda9145572209fba0738aa6249ab5569f82a705dad73aca5f099f8a5d/5c53553…

Language: C/C++ Platform: Windows x64 OS Version: Windows Packer / Protector: None Description: This is my very first created "CrackMe" and I'd love to get feedback/suggestions on it (especially how I could make it harder without packing/obfuscating/virtualizing the binary)! The challenge is to find the correct password and the correct response. Screenshot: PleaseCrackMe.exe

Difficulty : 8 Language : C++ Platform : Windows 32-bit and 64-bit OS Version : All Packer / Protector : VMProtect 3.0.9 Description : The objective is to interpret virtualized functions in the attached binaries. No additional options have been used - no memory protection, no import protection and no compression. The virtualized function(s) will execute when the following key(s) is/are pressed: VMP32 (V1) : P VMP32 (V2) : 1 and 2 VMP64 (V1) : P VMP64 (V2) : 1 and 2 The virtualized functions are not very large. Detailed information of the interpreting procedure/internals or a complete solution paper is pref…

Difficulty : 10 Language : C# .NET 4.0 Platform : Windows x64/x86 OS Version : All Packer / Protector : Eddy^Protector Description : Hello im back. I developping new obfuscator based on ConfuserEx vanilla. But really different and increased protection to 200%. I used some cool algos like: XXTEA, RC6 , RSA. Provide all 200 Key pairs to solve this KeygenMe. Happy decrypting! KeygenMe Eddy^CZ 2019.zip

Difficulty : 3-4? Language : C++, .NET 4 Platform : Windows x64 OS Version : Windows 7+ Packer / Protector : ConfuserEx, Oreans Description : Unpack and provide a quick overview of how you did it and what tools were used CrackMe1.zip Screenshot :

Difficulty : I don't know, but they say 10 Language : C# Platform : Any Windows OS Version : All Packer / Protector : AssemblyGuard.io Description: You put the key and it will say "That's really correct!" if the key was correct. I'd like someone who unpacked it to tell me how he/she did it 😕 NOTE: I want it to be unpacked, I don't want you to use Process Hacker just to get the key of the Unpackme file. Screenshot: Thanks! UnpackMe.exe

Difficulty : 7.3 Language : .NET Platform : Windows, x32/x64 OS Version : All Packer / Protector : ConfuserEx Modded Description : ConfuserEx Mod b1scoito Protector Screenshot : unpack.exe

Difficulty : You Say it :) Language : .NET ( C# ) / C++ Platform : Windows x32 OS Version : Windows 10 , 8 , 7 Packer / Protector : Bulletproof.NET BETA Description : Hey tuts4you Community ! It's a C# Assembly protected by my own protector Bulletproof.NET ... See Missions. Screenshot : *Copyright Materials [ GUI ] : https://www.nuget.org/packages/WPFThemes.DarkBlend/ Missions: + Get the source code of WPF .Net Assembly + AES IV & KEY is in Source , Decrypt two strings in the text box , But it's easy to find with memory dump becuz I didn't use Secure String , Main Mission…

Difficulty : 8 Language : .NET / Delphi / C++ Platform : Windows x32/x64 OS Version : Windows 10 , 8 Packer / Protector : SuperMax Engine ™ BETA Description : Hey tuts4you Community ! This is a .net project that I made on my own protector SuperMax protector/packer. The last one cracked , so I upgraded security system to 3.0 version , it's harder to crack. See Missions. Screenshot : *Copyright Materials [ GUI ] : https://www.nuget.org/packages/WPFThemes.DarkBlend/ Rule 01 : Tell us how you cracked it. Missions: 01 > first , earn the Activation Code and write it here ... 02 …

Difficulty : 10 Language : C# Platform : Windows OS Version : Winall Packer / Protector : DNGuard v3.80 - HVM not applied (will expire 26/12) Description : Provide serial or unpack me ggggg.rar

Difficulty : 2-4 Language : .NET/C# Platform : Windows OS Version : All Packer / Protector : Custom ConfuserEx Description: Should Be A Very Simple Unpack/Crack Me. Pretty Easy To Remove Anti Tamper. Objective: Unpack And Attach Unobfuscated File And Or Post The Message Box Saying Success! Screenshot(s): Download https://mega.nz/#!wToG3QRD!8XuTTHHbO7zcJiuiBaPxah9kyHIXy4IhIEOCmMM-RvE Virus Total https://www.virustotal.com/#/file/fb2eecda047c4c55d23d598de4b342a48baf4697192fa76c90e1e3c1d50f06c0/detection (False Postives Due To It Being Obfuscated!) Unpack Me - …

Difficulty : 7 Language : C++ (crt support) / C# (:NET 2.0) Platform : Windows 7+ (X86) OS Version : All Widnows Packer / Protector : Rlpack, Upx (custom), ConfuserEx(custom) , Memory protection, Antidebug (ASM) Description : This one is for most experienced reversers. Because computing runtime is spreaded in to the three PE files. Screenshot : CrackMe^ v15___.zip

Difficulty : Probably 8 Language : C# .NET Platform : Windows (anyCPU) OS Version : Windows 7 Above Packer / Protector : Ama's Protector Description : Upload the Unpacked file and Give me a detailed tutorial. like... tell me the specific method or specfic tools you used in order. as i said in the previous unpack challenges XD. you know the rest. Screenshot : testapp_enc.exe

Difficulty : 4+ Language : Java Platform : Windows x32 OS Version : Windows 7 and up Packer / Protector : Excelsior JET Description : Good Luck Screenshot : Demo.7z

Difficulty : 4-5 Language : .NET Platform : .NET/Mono OS Version : All Packer / Protector : Custom Description : This is a virtualizer I wrote over the last few days, basing most its protection on simple virtualization obfuscation, as well as constant local shuffling in order to make debugging a bit harder. Proper anti-debugging isn't implemented, though, so that should make things a bit easier. Cracking : If you do crack this, please post in the thread (or DM me) about how you did it. It doesn't have to be step-by-step; a simple "after doing X all you need to do is Y" is fine. If you have any suggestions for additional obfuscat…

Difficulty : 5 Language : C# Platform : Windows OS Version : Windows 7 .8.1,10 Packer / Protector : agile.net (unknown) Description : unpacked Screenshot : agile.zip

Difficulty : 2 Language : .NET Platform : tested on windows 10 OS Version : All Packer / Protector : Enigma and custom obfuscation (Without constant encryption) Description : So, the goal of this Keygen Me is to obviously create a keygen. Your keygen should create a "KEY" file which will contain data which will be checked by the application. The application takes the key file as input (Drag and drop). Provided with the application is a sample key file which contains a valid key. Create a keygen which will create other valid key files. Screenshot : CrackMe.rar

Difficulty : Probably 7 Language : C# .NET Platform : Windows (anyCPU) OS Version : Windows 7 Above Packer / Protector : Atipls' obfuscator Description : Upload the unpacked file and give me a detailed tutorial. Describe me the specific method or the specific tools in order used. As I said in the previous unpack challenges XD. Screenshot : UnpackME.exe

Difficulty : 9 Language : .NET Platform : Windows OS Version : 7 and above Packer / Protector : just dynamic methods (custom solution) Description : I learned a lot while building my original dynamic methods crackme so I decided to take it up a notch and created a new version. This one works the same: it asks for a name and a serial code, and if the serial is valid for the given name, it displays an ID calculated from the name. The goals are to either make the program calculate the ID without checking the serial, or build a keygen that creates valid serials. One pair of name and serial is provided. I tried to make it impossible to dump the dynamic …