Challenge of Reverse Engineering

Language : C# Platform : Windows x64 | x86 OS Version : Windows Packer / Protector : Modded ConfuserEX, Riddle, Enigma Protector (My own config) Description A Simple CrackMe Solve the missing key. Screenshot CrackMe.exe

Here is a simple unpackme that checks if still packed. It uses known checks from PECompact after the file is unpacked. - Injected API. This demos the use of IsPacked and WaterMark API, coded in Delphi. Solution is to unpack it and patch so it runs unpacked. This was coded for beginners learning so the level is very easy. Text references and the memo box are there to make it easier to understand what needs patched. Delphi decompilers will have no problem with this file. Only anti debug is the standard included from the packer. Try just not patching the watermark to the good cracker jmp as the watermark value could be crucial for other functions of a protected app. …

Simple unpackme: Dnguard 3.68 Enterprise Easiest Dnguard unpack me. The purpose is unpacking. SimpleUnpackMe.zip

Language : Assembly Platform : Windows x32/x64 OS Version : Windows 7, 8, 10 Packer / Protector : None Description : Found this one while cleaning my box, can you find the key? Screenshot : Rule : Tell us how you cracked it. Baby Crackme #1.exe

Difficulty : 7/10 Language : C# Platform : Windows Packer / Protector : ConfuserEx mod + Extra antidebug and antiattach protection NetCrackMe.rar

Difficulty : 3 Language : C# (.NET) Platform : Windows x32/x64 OS Version : Windows 7/8/10 Packer / Protector : AntiSkid (own) Description : get the password. Screenshot : CrackMe-antiskid.exe

Language : .NET Platform : Windows x64 OS Version : All Packer / Protector : Modified ConfuserEx Description : This is a heavily modified version of ConfuserEx, mostly custom, some copied from other obfuscators seen in the wild. I believe this to be difficult to reverse to some extent, but definitely not even close to impossible. (Also ignore old Discord ID added I changed accounts a while ago.) Also, please document how you were able to reverse it, and post the serial key. Thank you! Screenshot : Download: CrackMeO.exe

Language : . NET Platform : Windows OS Version : Windows 7 Packer / Protector : ArmDot Description : Devirtulize the Armdot virtualized code (I used virtualized option + encrypted strings). Screenshot : UnpackMe.protected.exe

Difficulty : 3 Language : C# (.NET) Platform : Windows x32/x64 OS Version : Windows 7/8/10 Packer / Protector : None [just sum anti-skid stuff] Description : get the password Screenshot : Download: CrackMe.exe

Language : .NET Platform : Windows x86 OS Version : All Packer / Protector : ConfuserEx Modded Description : Can you see the code? UnPackMe.exe

Difficulty : IDK Language : C# Platform : Windows OS Version : All Windows Packer / Protector : Night Protector 2.0 (My own protector) Description : Unpack-me and clean the code, and give a Difficulty! Screenshot : Click to download crackme!

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…