Challenge of Reverse Engineering

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

Difficulty : 7 Language : .Net Platform : Windows x32 OS Version : All Packer / Protector : Winlicense 2.4.5.0 Description : Just a little project I made for fun Currently looking into investing in a licensing / obfuscation system. Little twist on this one Have fun! Screenshot : CrackMe WL.zip

Difficulty : Unsure, 9? Language : .Net Platform : Windows x32 OS Version : All Packer / Protector : AutoCrypt SL - https://www.softwarekey.com/solutions/ Description : The end goal here is to activate the product. Bypassing the entire activation process is also acceptable obviously lol Screenshot : CrackMe.zip

Difficulty : 3/10 Language : C++ Platform : Windows [coded and tested on Win7 32bit] OS Version : All Packer / Protector : None Description : I coded a keygen_me for my own practice, but I want you people to try and give me few opinions. Like, for a well-skilled programmer/reverser, how easy or hard it is, how much time did it take to solve it, or what ways I could have followed to make a more tricky crackme. I would be very much grateful if anyone tries it and gives me some opinions. It's mainly a keygenme, but cracking is allowed too. If you are well skilled, then you should head for keygenning. There is also an option to see detailed information inside t…

Difficulty : 3-4 ? Language : C# Platform : Windows OS Version : Windows Packer / Protector : Some custom things and some option of my confuserex modded Description : Find the right strings Screenshot : Download : CrackMe.exe

Difficulty : ? Language : Purebasic Platform : Windows OS Version : Windows Packer / Protector : unknown Description : Ok, after a delay i provide a alpha executable by the tool. At start you can see the licence screen. Let me know how you did the bypass and you will get a reward on your PayPal Account. Screenshot (taken from the ini file) : Reward: donation for your PayPal account AiO_LinkCrypterV0.00.8.rar

Difficulty : 7-8 Language : Delphi Platform : Windows x32 OS Version : All Windows Packer / Protector : None and No Crypto Description : Rules : no patch, only working keygen or a valid serial for your name... Good luck Screenshot : x0rz Keygen ME.rar

Difficulty : Don't know Language : .NET Platform : Windows OS Version : All Packer / Protector : skater & My protect coded my me v1 & .Netshrink Description : Here is a test file for unpacking and cracking! It is protected by skater & My protect coded my me v1 & .Netshrink. Test file have 3 level to unpack if you crack mistakely every level program will close! Good luck. Screenshot : UnPackME.rar

Difficulty : 9/10 Language : C++ Platform : (Windows, x32/x64) OS Version : Windows 7,8,10 Packer / Protector : Vmprotect 3.09, Code Virtualizer 2 Description : Hi in this keygenme it reads the hardware data in ring0 but the main program is in ring3. For x64 os you have to enable test mode in order it to run. Here is how: You have to run in cmd: bcdedit /set testsigning on then restart You can disable test mode with: bcdedit /set testsigning off It is the same keygenme 1 protected with Vmprotect and the second with Code Virtualizer. Just want to compare the two protectors to see which is better. If someone make keygen especia…