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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

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  1. mrexodia
    KeygenMe · Started by mrexodia,

    Hey everybody,Here is a simple crackme for you guys, should be fun Keygen/Serial preferred, but if you can only patch submit how you did it anyway. kao fully solved the challenge gryzon posted a serial Jasi2169 submitted a patch Greetings crackme1.rar

      • Like
    • 12 replies
    • 14.7k views
  2. XenocodeRCE
    UnPackMe (.NET) · Started by XenocodeRCE,

    Just a custom version of ConfuserEX 0.5 Nothing that special, very humble modifications I post it here in order to know what shall I improve https://www.sendspace.com/file/p1fsts

      • Like
    • 11 replies
    • 17.2k views
  3. sirp
    CrackMe · Started by sirp,

    Difficulty : 3 Language : Net 4 Platform : Windows x86/x64 OS Version : All Packer / Protector : DotNetProtector v6 Evaluation edition Description : The challenge is to get the methodbody for the button1_Click method. I try coding a jit hooker for dumping methodbidys ..but i'am kina stuck (source attached) Screenshot : Please submit a tutorial .. and please have a look at my source what i'am doing wrong .. it doesn't show the methodbodys anymore ..but i already managed to get some real methodbodys and added them with CFF back to the assembly.. but now i must have done some big mistake .. i can only see the "emtpy" methodbodys …

    • 3 replies
    • 6.1k views
  4. LoLLo90
    KeygenMe · Started by LoLLo90,

    Difficulty : 5/10Language : .NETPlatform : WindowsOS Version : AllProtection : No protection Goals : Silver: Give a valid combination Gold: Write a keygen Patching is not allowed! http://www33.zippyshare.com/v/lxWJPWic/file.html Shapes.rar

      • Like
    • 7 replies
    • 7.5k views
  5. GIV
    KeygenMe · Started by GIV,

    Difficulty : For the algo itself i guess that 2 is enough. Language : VB .NET 2010 Platform : Windows x64 OS Version : Vista and above Packer / Protector : Eazfuscator. Description : Goals: 1. Write a valid keygen for the target. Good luck! Screenshot : Keygenme 2016-2.rar

      • Like
    • 12 replies
    • 8.7k views
  6. Mr. Krabs
    CrackMe · Started by Mr. Krabs,

    Difficulty : I guess 5? Language : AutoIt Platform : Windows OS Version : XP to 10 Packer / Protector : AutoGuardIt Description : Simply crack this. I would prefer if you stick to the normal AutoIt cracking method and not treat it like Delphi/C++/C/Compiled languages. Screenshot : ObfuscatedFile.zip

      • Like
    • 7 replies
    • 30.7k views
  7. Gladiator
    UnPackMe · Started by Gladiator,

    Difficulty : 5 Language : Delphi Platform : Windows x86/x64 OS Version : XP SP2 and above. Packer / Protector : Artan Protector 2.0 UnpackMe with all options enabled with normal complexity. Description : Unpack the file and keep the application working. ScreenShot : Artan_2_UnPackMe.zip

      • Like
    • 24 replies
    • 12.5k views
  8. qpt^J
    KeygenMe · Started by qpt^J,

    Hey all, Today I coded new keygenme, in this time for newbies Rules Every solutions are welcomed, but keygen preferred Lets see, who will be the first Easy Keygenme1.rar

      • Like
    • 35 replies
    • 38.2k views
  9. cawk
    KeygenMe · Started by cawk,

    Difficulty : 3-4 Language : .NET Platform : Windows OS Version : All Packer / Protector : confuserex custom Description : Valid submissions 1)a valid serial for your name 2)a working keygen good luck Screenshot : Keygen.exe

      • Like
    • 2 replies
    • 8.2k views
  10. LoLLo90
    KeygenMe · Started by LoLLo90,

    Difficulty : 4/10Language : .NETPlatform : WindowsOS Version : AllProtection : Find out I am back again with this little baby... Goals : Find the valid ID! This is not a bruteforceme! It is absolutely possible to get the ID without bruteforceing! Patching is not allowed! Erjey's Logics.rar Just to clarify: the given key is the same on all computers and the goal is to find the right id for the key that i have chosen.

      • Like
    • 15 replies
    • 9.2k views
  11. Pushad
    KeygenMe · Started by Pushad,

    Difficulty : You rank Language : Windev v20 Platform : Windows OS Version : All Packer / Protector : (None,) Description : ( This sample keygen using some WLanguge of windev, nice to see video tutorials for keygening this file ) Screenshot : Keygenme WD20.rar

    • 1 reply
    • 6.4k views
  12. madskillz
    UnPackMe · Started by madskillz,

    Protections: BoxedApp Packer 3.2.3.9 Demo If you succed to unpack please make a tutorial. Attached FilesBoxedApp Packer 3.2.3.9 Demo UnpackMe.zip

      • Like
    • 9 replies
    • 17.9k views
  13. Desolath
    UnPackMe (.NET) · Started by Desolath,

    Difficulty : 4-5 Language : .NET Platform : Windows OS Version : All Packer / Protector : My Custom ConfuserEx Description : Fully unpack the program and get the code I have hidden inside (Enter it in textbox and check it) Please provided details/a tutorial on how you managed to unpack it. Screenshot : Download: https://www.sendspace.com/file/1jin7v Download is also linked below. Unpackme.exe

      • Like
    • 2 replies
    • 12.1k views
  14. NCK
    UnPackMe (.NET) · Started by NCK,

    hello all code mokeys ! this application was protected ! have a try, UnPackMe. If you win,do you mind sharing your way ? good luck ... UnPackMeDemo_.rar

      • Like
    • 13 replies
    • 19.3k views
  15. Kurapica
    CrackMe · Started by Kurapica,

    Difficulty : NAN Language : Delphi Platform : Windows x64 OS Version : Windows 7 Packer / Protector : None Description : Challenge : Your solution should be able to report whenever the message box appears in the victim. Here are the challenge rules : 1 - No patching is allowed, It doesn't matter how you solve it as long as the SHA-1 of the original file stays "9F1CCEBBDAB4A0CEEC30C61F1D64C4B1DEAE8CBE" 2 - If your solution includes any coding then it should only be C#. 3 - Writing a simple tutorial is obligatory, don't post your solution if you don't want to write a tutorial. 4 - Don't use dUP / uPPP or similar tools but you can wr…

      • Thanks
      • Like
    • 17 replies
    • 8.3k views
  16. CodeExplorer
    UnPackMe (.NET) · Started by CodeExplorer,

    DotnetProtector UnpackMe Edit: Simple Msil Decryptor works if you unselect Nop EntryPoint!Unpack this and write a turorial! DotnetProtector_UnpackMe.zip

      • Like
    • 6 replies
    • 16.2k views
  17. delldell
    UnPackMe · Started by delldell,

    Themida , ZProtect =Mix Unpackme = Delphi 7 Have Fun delldell_UnpackMe_Themida__ZProtect.rar

  18. Kurapica
    CrackMe · Started by Kurapica,

    Difficulty : NAN Language : Delphi Platform : Windows x64 OS Version : Windows 7 Packer / Protector : None Description : Challenge : Make the application show a different message when clicking the button. by default, it shows a simple "Hello World !" message. Here are the challenge rules : 1 - No patching is allowed, It doesn't matter how you solve it as long as the SHA-1 of the original file stays "9F1CCEBBDAB4A0CEEC30C61F1D64C4B1DEAE8CBE" 2 - If your solution includes any coding then it should only be C#. 3 - Writing a simple tutorial is obligatory, don't post your solution if you don't want to write a tutorial. …

      • Like
    • 10 replies
    • 6.6k views
  19. 0xNOP
    CrackMe · Started by 0xNOP,

    Difficulty : 2/10 Language : .NET Platform : Windows (x86~x64 / x64 Preferred) OS Version : All, Windows 7+ (Must Have .NET 4.6.1!) Packer / Protector : Custom VM Description : Challenge is to successfully crack the software. Allowed: <N/A> Disallowed: Patching Serial Fishing Screenshot : LEET.7z

      • Like
    • 4 replies
    • 7.4k views
  20. NCK

    Hi guys.. This application was protected with VMprotector and other Obfuscator ! This application cannot run in x64 machine! UnPackMe, have a try ! Good luck. Wish you be happy everyday. UnPackMe by Net7Cracker.rar

      • Like
    • 6 replies
    • 8.6k views
  21. ghsafsdfsdhfghfgjhgkj
    KeygenMe · Started by ghsafsdfsdhfghfgjhgkj,

    New NickName : Mastern Master Turkish Crack TeaM - MasterN Keygenme #6 Protected by PC-GUARD 5 Build Date : 21.12.2010 Cracked by : <NoNE> />http://www.mtct.org/mtct/showthread.php?1208-KeygenME-6 http://www.mediafire.com/?ywcjcoee16o0bar Mirror; http://www.mirrorcreator.com/files/V6FRPECA/KeygenME6.rar_links KeygenME6.rar

      • Like
    • 10 replies
    • 9.3k views
  22. LoLLo90
    UnPackMe (.NET) · Started by LoLLo90,

    Difficulty : 2 Language : .NET Platform : Windows OS Version : Windows 7 Packer / Protector : Modified CryptoObfuscator Description : Try to deobfuscate this file obfuscated with a modified CryptoObfuscator . The deobfuscated file must be a working file. Deobfuscateme-erjey.rar

    • 5 replies
    • 9k views
  23. man of the war
    CrackMe · Started by man of the war,

    Dear Friend's This My Challenge Message ( Good ) Make Tutrial Please Link Good Luck Done.rar

      • Like
    • 8 replies
    • 8.3k views
  24. GIV
    KeygenMe · Started by GIV,

    Hi guys. Today i have made a small keygenme. The algo is very simple (getting to the algo is not). Difficulty : 4 Language : .NET Platform : Windows X86/X64 OS Version : XP and above Packer / Protector : Eazfuscator Description : Simple keygenme with short computing algo. Simple Keygenme 2016 - giv.rar

      • Like
    • 26 replies
    • 15.9k views
  25. CodeExplorer
    UnPackMe · Started by CodeExplorer,

    [unpackMe] UnpackMe Can you unpack this? Should be harder then previous version!

      • Like
    • 8 replies
    • 13k views

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