Challenge of Reverse Engineering

View File Poetic AutoIt (string/integer obfuscation) This is a simple CrackMe consisting of an input. The correct input is two stanzas of a particular poem and will reveal a label of the poem title and author upon success. Otherwise, "Try again..." will be displayed. If I'm allowed to be picky, I'm primarily interested in scripted efforts to RegEx analyze strings/integers. Very little effort (as in none) went into hiding the correct string. The script was merely passed-through a self-made obfuscator. Full disclosure: It contains rudimentary debugger and compilation checks which, if failed, falls into a while loop with a one secon…

View File A crackme with math problem Just run it. It is an interesting math problem. No vm, no obfuscation. You can debug it with dnSpy even Visual Studio. You should use public method inside this crackme to generate a valid hex string and make program output correct string. Submitter wwh1004 Submitted 08/07/2020 Category CrackMe

View File CrackMeBoi I made a custom obfuscator and I haven't made any progress cracking it so please crack the file with my custom .NET obfuscator. Do not use OllyDbg or any software of that kind, you can use Mega Dumper and other tools similar. Submitter Ninjego1 Submitted 06/03/2020 Category CrackMe

Language : Python Platform : Windows OS Version : All Packer / Protector : My Protector (https://github.com/robert169/Python-Obfuscator) Description : Want to see how long it takes to get it unpacked, is easy tho but i want to know where can i improve it Spoiler Screenshot : Download : Protected.py

View File CrackMe 4 This file is protected by my custom C++ virtualizer and C# protector. The correct solution is to find the correct key and unpacked target. Enjoy it! Submitter 0X7C9 Submitted 07/01/2020 Category CrackMe

Language : C# .Net Platform : Windows x32/x64 OS Version : All Packer / Protector : DNGuard HVM 3.94 Description : Hi everyone,two solutions are accepted : 1. GOLD MEDAL = UNPACKING THE PROTECTOR 2. SILVER MEDAL = PATCHING THE TOOL Hope you will have some fun! *DO NOT PATCH THE CrackMe,THE GOAL IS TO PATCH THE .DLL PROTECTED WITH DNGUARD HVM OR UNPACK IT!* Can't upload larger file "Max total size 0.98MB" so i'll just put it on the link : https://anonfile.com/B9aae3P7n9/CrackMe_rar CrackMe.rar

Language : .NET Platform : Windows [x32/x64] OS Version : Windows 10 Packer / Protector : Habib Extreme Protector / .NET Reactor Description : Habib is my good friend. I want to know how strong is it ? If you can, write how you unpacked it. Virustotal link. Screenshot : Download : Habib.rar

Difficulty : 4 Language : .NET Platform : Windows OS Version : All Packer / Protector : ConfuserEx Modded Description : Hi , one guy is selling his protector (confuserex modded) and it is really expensive. I want to know if someone can unpack that because I don't trust him and his paid protector =/ Thanks in advanced Good Luck! Screenshot : UNpackme.exe

View File Beds Protector v6.9 Try to unpack this file protected using Beds Protector v6.9 and then crack it. A little spoiler for some of you: Spoiler All of these are fake attributes but you probably already know that! Submitter wowinr Submitted 06/06/2020 Category UnPackMe (.NET)  

Language : C++ Platform : Windows OS Version : Windows 7,8,8.1,10 Packer / Protector : Mixed VM & Packers, RSA, RC4 Description : Enter correct key and you willl see the flag, and this is result. Post flag to spoiler with wirite up how you decoded it. CrackMe.exe

Language : C# Platform : Windows x64 | x86 OS Version : Windows Packer / Protector : Modded Beds obfuscator + KoiVM Description: Simple Unpack the file to regular code and put in password make sure the application still runs after. Rules no grabbing password from memory at all. Do not forget to write the solution i want to know how you did it Screenshot: CrackmeBeds+KoiVM.exe

Language : C# Platform : Windows x32/x64 OS Version : Windows 10 Packer / Protector : Modded ConfuserEx + a packer. Description : Basically, just find the key to decode the string. All I will be (probably) using this for is for is to garbage-up some .INI files for my apps to read/write to, so that way there's no plain text. This isn't for hiding some sensitive information lol. Also, if you could, rate the difficulty from 1/10. Thanks! Screenshot : CrackMe.rar

View File KoiVM Modified (Beds Protector 1.4.1) KoiVM is a virtualizing protector for .NET applications, as a plugin of ConfuserEx. ConfuserEx is a open-source protector for .NET applications. It is the successor of Confuser project. This file is protected with KoiVM using; MD5 Hash Check Constants Renamer Anti-Tamper I took KoiVM from https://github.com/BedTheGod/ConfuserEx-Mod-By-Bed (1.4.1) and modified it to make OldRod fail devirt. Submitter 0x72 Submitted 05/20/2020 Cate…

Seeing as a few people seem to be "anti Olly'ing" recently I thought this crackme from crackme.de may be of interest to a few people here. http://crackmes.de/users/magik/anti_olly_1.0/ Anti_Olly.zip Ted.

Language : C# Platform : Windows x32/x64 OS Version : All Packer / Protector : SatanMei Protector Description : Unpack and tell how fast did you unpack it and the way if possible. Screenshot : Unpack_Me.exe

Language : C++ Platform : Windows OS Version : Windows 7,8,8.1,10 Packer / Protector : Own Description : Enter correct key and you willl see the flag, and this is result. Post flag to spoiler with wirite up how you decoded it. CrackMe.exe

Language : VB.NET Platform : Windows OS Version : All Packer / Protector : NeosProtector 2.0 Description : Everyone Hello, I found new pack program. I used pack. Lets use unpack. Screenshot : Download: Unpackme.exe

Language : C/C++ Platform : Windows x32 OS Version : ( Windows 7,10) Packer / Protector : None Description : Goal : Find correct key. Enter key in textbox and click OK button then you see result . Screenshot : crackme_release.exe

Language: C# Platforms: Windows Protector/Obfuscator: Blinks Obfuscator V1.0.0 Description: Unpack the file! Virustotal: https://www.virustotal.com/gui/file-analysis/OGYzMjc3NzBjMzljMjk0YWEyNTA4NGI4NWQ2YzY3ZTM6MTU4NzkwODUyMw==/detection Download: AtomicProtectorNewestCrackMe.zip

Language : (C++) Platform : (Windows) OS Version : (Windows 7, 8, 10) Packer / Protector : (None) Description : Made my first crack me today. Does some stuff with math, will take a bit of thought. Goal: Find the correct flag. NO PATCHING. Screenshot : Download : FirstCrackMe!.exe

Language : VB.NET Platform : Windows OS Version : All Packer / Protector : MVMProtect 0.8.7 BETA Description : Hello everyone, if you see this, open the package I want from you! Screenshot : Unpack ME-OUT.rar

Language : .C Platform : Windows x32/x64 OS Version : Windows 7/8/10 Packer / Protector : None Description : Hey guys, I have built something very simple. It will take 1-2 minutes to crack it good luck; 1) Find the key. 2) Disable the key check. Screenshot : Download : Simple CrackMe by Rainbow.exe

Language: C++ Platform: Windows OS Version : Windows 7,8,8.1,10 Packer / Protector : None Virus Total :Scan result Enter correct password for getting flag Password Keeper.zip

Language : TASM / MASM / FASM - assembler Platform : Windows x32 OS Version : All versions of windows. Packer / Protector : N/A Description : A very simple crackme. You have to bypass the registration and get rid of the NAG on the program to make the program think it's valid. If you cannot crack it and would like a hint, click HINTS or run the patcher which will make the program registered once you run the patch. Screenshot : To download, download the zip and run Target.exe. The patcher will show it's a virus but don't worry it's not. It shows it's a bad program because of it being a hacktool, so please disable your AV or add it in exclusi…

Language : .NET Platform : Windows 32 bit OS Version : All Packer / Protector : "DARKSPROTECTOR 2.0 | PROTECT YOUR .NET APPS WITH THE BEST CONFUSEREX" Description: Unpack the file and say how Screenshot: DL: unpackme.exe