Challenge of Reverse Engineering

Difficulty: 2-3/10 Language: .NET Platform: .NET 4.5.2 OS Version: All Packer/Protector: rdProtect.NET (personal obfuscator) Description: rdProtect.NET is the name of an old obfuscator I made a few months back. I do not use it anymore, but you might wish to have a challenge by trying to unpack an application protected by it. Your goal is to recover the number randomization algorithm inside of this application. You can try it out by entering a number into the box below and pressing 'Generate Number'. Screenshot: UnpackMeRD-packed.exe

Difficulty : 6 Language : C++ Platform : Windows OS Version : All Packer / Protector : Safengine Description : hi,friends . I reversed the VMP3.1.2 (build 886) anti debug method and improved this method. You need to use the debugger to bypass his tooltip Screenshot : success screenshot: file : XAntiDebug2.rar

Difficulty : 6,7 Language : .NET Platform : Windows all architecture OS Version : All Packer / Protector : Night Protector (ConfuserEx Modded) Description : The goal is to give unpack, and talk your steps. for me to improve the encrypt. If possible change the text (view in screenshot) with your nickname. Screenshot : Holly shit.exe

Difficulty : 8 Language : C# Platform : windows OS Version : winall Packer / Protector : ConfuserEx Description : provide serial or unpack me ggggg.rar

Difficulty : 8 Language : C/C++ Platform : Windows 32-bit and 64-bit OS Version : All Packer / Protector : Themida 2.4.6.0 Description : The objective is to interpret and reconstruct 3 procedures in each file that have been virtualized. No additional options have been used. The virtualized functions will execute when keys '1', '2' and '3' are pressed, respectively. 1 = WHITE 2 = RED 3 = BLACK Only one "brand" of VM has been used per file. I will upload additional ones when current challenges have been solved or seriously attempted. Detailed information of the interpreting procedure/internals or a complete solution paper is …

Difficulty : 5 Language : Borland Delphi Platform : Windows x32 OS Version : Windows XP + Packer / Protector : VMProtect v 3.x Description : enter password Screenshot : 123.exe

Difficulty : 8/10Language : .NET C#Platform : Windows x64OS Version : AllPacker / Protector : DNGuard + Themida Description : Get the password. Screenshot : CrackMe.zip

Platform: windows Language : .NET Difficulty : ranges Protection : theres files with agile,ilprotector,eazfuscator and appfuscator Description : thought it was time for something to be posted on this forum so here is the same keygenme(some values changed per file) that are protected by obfuscators above READ INFO.TXT for some further information Goals : Gold : unpack them Silver : keygen Bronze : valid key for your username Rules : no patching or brute forcing https://gyazo.com/230bc896a03685c9b9365de5bee5e195 Results divide - Gold for appfuscator Michidu - Gold for ilprotector Download: …

hi dears. its the target from the user "Gladiyator=>Nima NT" the author of hefaz protector i received it from a persian forum. Hefaz Protector use Flex Compress Componet for delphi for cryptography.... and also Flex Compress support set pass on it (Cipher...we can find it on winrar) well "hefaz" support other companies "Dongle" "Tiny Dongle">> have an builtin memory for keeping an customized string for better security. well? as i told Flex Compress compress and crypt file with a pass....well? also like RC4 and most Cipher.... if you encrypt a file with a key you never cant decrypt it without key....its clear. right? so hefaz protector put an string as key on Dat…

Difficulty :5 Language : Autohotkey(C++) Platform :Windows x32/64 OS Version : Windows Packer / Protector : VMProtect Description : Hello guys. I will add more obfuscation to this program. But I want to know It is vulnerable to security. Challenge Reversing, and give me advice how to make enhance + I already change something. UnpackMe.exe Screenshot :

Difficulty: 3 (Normal) Language: Delphi Platform: Windows x32/x64 OS Version: Windows XP, Win7, Win8, Win 8.1, Win10 Packer / Protector : none Description : Hi guys, presenting my new creation. The only solution is a working keygen as always!. Patching is not allowed. Prizes: 1) Keygen: Gold 2) Serial: Silver Winners: To be decided... Screenshot : Have fun! Regards defc0n/2k17 RCE2.zip

Difficulty : 2-3Language : .NETPlatform : WindowsOS Version : Windows Packer / Protector : ConfuserEx Modified Description : Hello here is my newest version of my obfuscation a lot has changed since my last one. Aim is to unpack the file completely, good luck. Screenshot : https://gyazo.com/14276f1aa308dd3bb53b156a8f7d34fa Download link in case local one doesn't work: http://www21.zippyshare.com/v/J5LKYzco/file.html b.exe

All crack metods(Patch/Loader/inline/...) accept! download link: http://rapidshare.com/files/74753878/Crackme.rar shetab and molbox packed file - orginal file and shetab protected file with dll. how enter activation : http://rapidshare.com/files/74798439/register_help.rar

Difficulty : 4+ Language : c++ Platform : OS ALL OS Version : All Packer / Protector : VM Protect Description : UNPACK IT + remove logo Good luck. Screenshot : CRLOGO.rar

Difficulty: 1 (Easy) Language: Assembler Platform: Windows x32/x64 OS Version: Windows XP, Win7, Win8, Win 8.1, Win10 Packer / Protector : none Description : Hello, guys, this is my introduction KeygenMe challenge. It is pretty simple and straightforward. The only solution is a working keygen. Patching is not allowed. Screenshot : Have fun! Regards defc0n/2k17 RCE#1.zip

Difficulty : 8 Language : C/C++ Platform : Windows 32bit OS Version : Windows 7+ Packer / Protector : UPX 3.91 Description : The goal is to write a keygen for it without patching the file. Key must have 5 characters. Screenshot : Download : keygenme.zip

Difficulty : 8 Language :.NET Platform : Windows x32/x64 OS Version : All Packer / Protector : PvLog dotNet Protector v6.0.6367 Description : Hello Guys this a file packed with PvLog dotNet Protector v6.0.6367 , Please Unpack the file, clean the code and keep the application working. and make a Short Tut for it. Thanks For All Screenshot : UnpackMe.rar

Difficulty : 4+ Language : Java Platform : Java Support OS Version : All Packer / Protector : Zelix KlassMaster Description : Tutorial Good luck. UnPackMe.zip Screenshot :

Difficulty : ?? ( you tell me ) Language : C++ Platform : Windows OS Version : Windows XP, 7, 8, 10 Packer / Protector : VMProtect Professional 3.0.9 + Custom AntiRE, AntiDebug via Kernel Description : The purpose of this challenge is to find out if unpacking is possible with my additional protection. There is a reward included also if someone can completely unpack it, and provide full tutorial on how to, for that you need to contact me. The application has internal timers set to run some functions for checking the application integrity, one of them is VMProtectIsProtected(). I am not using ExitProcess(0); for quiting/terminating the application, instead I …

Difficulty : 5+ Language : Java Platform : Android OS Version : 4.0.3 and up Packer / Protector : DexProtector 7 CPU : arm/v7/v8, x86/x86_64 Description : Don't patch Good Luck Screenshot : KeyGenMe_v0.1.zip

Difficulty : 6.5/10 not sure you are the judge Language : NET Platform : Windows (Net framework 4.5) OS Version : All version that support Net framework 4.5 Packer / Protector : Appfuscator + Mod Description : Unpack it Screenshot : Unpack MEH.exe

Difficulty : I realy don't know it's protected by a friend Language : .NET Platform : Windows OS Version : All Packer / Protector : Appfuscator Description : Try to crack it Please don't blame me Screenshot : Crack me_Prot.exe

Difficulty : 2-3 Language : Java Platform : Android OS Version : 2.2 and up Packer / Protector : DexGuard Description : Don't patch Best of luck Screenshot : Demo.7z

Here it is an unpackme wioth maximum VMProtect protection. It have also a boxed dll which should be a good and never seen target to unpack. Good luck. VMProtector_2.06_unpackme.rar

Difficulty : i Think it's Difficult !! Language : .NET Platform : Windows x64 , x32 OS Version : All Packer / Protector : DotNetPatcher Modded By Meee Description : You Should Know The Username & Password + tutorial how to unpack it. [!] The file should be runnable after unpacking it [!] Screenshot : UnPack Me By Tiger.zip