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Challenge of Reverse Engineering

Try a challenge or contribute your own, any platform or operating system...

The creation of new topics is disabled in these subforum categories.

Please create and post your new challenges in the appropriate subcategory of Downloads > Challenge of Reverse Engineering

A topic will then automagically be created and posted in these forums...

  1. Mr.RegEx
    UnPackMe (.NET) · Started by Mr.RegEx,

    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

    • 3 replies
    • 7.7k views
  2. Modify
    UnPackMe · Started by Modify,

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

      • Like
    • 1 reply
    • 7k views
  3. Mecanik
    UnPackMe · Started by Mecanik,

    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 …

  4. Modify
    KeygenMe · Started by Modify,

    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

    • 0 replies
    • 7.2k views
  5. Tesla
    UnPackMe (.NET) · Started by Tesla,

    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

      • Like
    • 1 reply
    • 11.3k views
  6. Tesla
    CrackMe · Started by Tesla,

    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

      • Haha
      • Like
    • 15 replies
    • 7.6k views
  7. Modify
    KeygenMe · Started by Modify,

    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

    • 1 reply
    • 5.8k views
  8. EvOlUtIoN
    UnPackMe · Started by EvOlUtIoN,

    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

      • Like
    • 66 replies
    • 61.2k views
  9. Mr-TiGeR
    UnPackMe (.NET) · Started by Mr-TiGeR,

    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

      • Haha
      • Thanks
      • Like
    • 3 replies
    • 10.5k views
  10. Asentrix
    CrackMe · Started by Asentrix,

    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

  11. Asentrix
    CrackMe · Started by Asentrix,

    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

      • Thanks
    • 2 replies
    • 4.3k views
  12. skylark
    KeygenMe · Started by skylark,

    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…

      • Like
    • 4 replies
    • 18.6k views
  13. barotyson
    CrackMe · Started by barotyson,

    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

      • Like
    • 2 replies
    • 4.4k views
  14. udg
    KeygenMe · Started by udg,

    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

      • Like
    • 8 replies
    • 11.2k views
  15. x0rz
    KeygenMe · Started by x0rz,

    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

      • Like
    • 6 replies
    • 14.6k views
  16. AHR
    UnPackMe (.NET) · Started by AHR,

    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

      • Like
    • 7 replies
    • 8.2k views
  17. HostageOfCode
    KeygenMe · Started by HostageOfCode,

    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…

    HostageOfCode
    HostageOfCode
  18. barotyson
    UnPackMe (.NET) · Started by barotyson,

    Difficulty : 4/10 ..? Language : .NET Platform : Windows OS Version : All Packer / Protector : Custom Description : Try to Unpack the file and post the Unpacked file! Screenshot : Download: UnpackMe.exe

    • 0 replies
    • 7.3k views
  19. hackernima
    UnPackMe (.NET) · Started by hackernima,

    Difficulty : 9/10 Language : C# Platform : Windows OS Version : All (Requires .net 4.0) Packer / Protector : Agile.net Description: Unpack the file, clean the code and upload it. 124.7z

    • 0 replies
    • 5.7k views
  20. barotyson
    UnPackMe (.NET) · Started by barotyson,

    Difficulty : 2/10 ? Language : C# Platform : Windows OS Version : All Packer / Protector : Custom ConfuserEX Description : Unpack the file and all recommendations are helpful ! Screenshot: UnpackMe.exe

      • Like
    • 6 replies
    • 7.9k views
  21. 0x32
    CrackMe · Started by 0x32,

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

      • Like
    • 4 replies
    • 7.3k views
  22. TechX
    UnPackMe (.NET) · Started by TechX,

    Difficulty : 8/10 Language : C# Platform : Windows OS Version : All (Requires .net 4.0) Packer / Protector : Crypto Description: Unpack the file, clean the code and keep the application working. and make a Short Tut for it. ScreenShot: Download Links https://hostr.co/4PgLTKiSB2Ms AntiCrash.rar

  23. windoz
    CrackMe · Started by windoz,

    Difficulty : ??? ( to be seed ) Language : Java , C++ (shared lib) Platform : Android OS Version : 4.1 or higher Packer / Protector : none VirusTotal : https://www.virustotal.com/it/file/5b8209bda95aae17a54f4c76eca3ae031d06b2ad2c1b3eef419fb71ea637ad94/analysis/1493482420/ Download : app-release.apk 1) What should I not do? This challenge does not require to bypass the password input 2) what should I do? This challenge asks to get the key wherever possible 3) Is the program in question copyright protected? No, you can do what you want 4) The password has…

      • Like
    • 2 replies
    • 5.4k views
  24. Ultrabeans
    KeygenMe · Started by Ultrabeans,

    Difficulty : 7-8. Language : .NET. Platform : Windows, x86. OS Version : Windows, tested on 10 x64. Packer / Protector : Confuser modded. Description : Rules: 1. Keygen only, no patch, no brute. A small mod of Confuser protecting a simple keygenme application. Screenshot : Dickens.KeygenMe.rar

      • Like
    • 2 replies
    • 10.1k views
  25. lucifeey
    CrackMe · Started by lucifeey,

    Difficulty : 4/10 Language : .NET Platform : Windows OS Version : All Packer / Protector : ConfuserEx 1.0.0-custom Description : Find out the password and give a tutorial how u got that. Screenshot : Spoiler CrackMe02.exe

      • Like
    • 7 replies
    • 8.6k views

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