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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. Leopar36
    UnPackMe (.NET) · Started by Leopar36,

    ByTanimsizVM Obfuscator v2.0 Try to unpack or alternatively provide a serial. File Information Submitter Leopar36 Submitted 03/11/2021 Category UnPackMe (.NET) View File

  2. Magi
    UnPackMe (.NET) · Started by Magi,

    Language : .NET Platform : Windows OS Version : All Packer / Protector : DNGuard 3.8.4.0 - Enterprise Description : Unpack this file it is DNGuard HVM. Screenshot : CM.rar

      • Like
      • Thanks
    • 14 replies
    • 22.3k views
  3. CursedLand
    UnPackMe (.NET) · Started by CursedLand,

    ILVirtualization (Custom Scratch VM) PLEASE NOTE THIS NOT MODDED PUBLIC VM, THANKS Difficulty : 4/10 Language : C# / .NET Windows OS Version : All Protection : ILVirtualization v1.0 Goals: Silver Medal: Clean Mutations. Gold Medal: Devirtualize The Code. File Information Submitter CursedLand Submitted 06/28/2021 Category UnPackMe (.NET) View File

      • Like
    • 2 replies
    • 6.5k views
  4. BlackHat
    UnPackMe (.NET) · Started by BlackHat,

    DumpMe / DebugMe Hi, This Unpackme is Protected by Poe with an Anti-Dump / Anti-Debug Method. Your Job is to find the Password either by Dumping or Debugging It. Bronze - Find the Password either by Debugging or Dumping Silver - Complete Unpack the File. Gold - A Full Description + Silver Download from Attachment or from File Section. Hybrid Analysis - https://www.hybrid-analysis.com/sample/2bc04a9242f385308d2425ba10966bc41b12646676fccd121144170abe01f0bf/60c16b6ab0565951c6619493 Virustotal - https://www.virustotal.com/gui/file/2bc04a9242f385308d2425ba10966bc41b12646676fccd121144170abe01f0bf/detection Wannabe1337_DumpMe.exe …

      • Thanks
      • Like
    • 2 replies
    • 9.8k views
  5. BlackHat
    UnPackMe (.NET) · Started by BlackHat,

    NETGuard.IO Code Protector (26/05/2021) Unpack this File Properly. Change the Message. This File Use MSIL Code Encryption + Code Flow Protection Only. Bronze Medal - Partially Unpack + Change the Message Silver Medal - Fully Clean Code + A Brief Writeup Gold Medal - Fully Clean Code + A Complete Writeup of the Unpacking Process including Tool Link (if any Used Specifically) File Information Submitter BlackHat Submitted 05/26/2021 Category UnPackMe (.NET) View File

      • Like
    • 4 replies
    • 5.7k views
  6. RDGMax
    CrackMe · Started by RDGMax,

    Difficulty : 5/10Language : VB6 [Inmortal] Platform : Windows 32/64OS Version : All windowsPacker / Protector : None Description : 1) Try to get a Valid serial for your ID 2) Patch :/ (for good work Message) Anti Debug: 5/10 Anti Decompile: 3/10 Anti Tracing: 5/10 Anti Dump: 2/10 Anti Dump: 2/10 Extra: 8/10 Screenshot : Thanks RDG_Crackme_vb6_v0.1_2016.rar

    • 9 replies
    • 9.5k views
  7. Gladiator
    UnPackMe · Started by Gladiator,

    Hi Attached file is simple VB6 File was protected with PeP latest Version so please try to unpack and then identify the way you used to beak it's protection. Thanks PeP_5.rar

      • Like
    • 9 replies
    • 9.2k views
  8. Modify
    UnPackMe (.NET) · Started by Modify,

    Language : C# Platform : Windows OS Version : Windows 7 Above Packer / Protector : ConfuserEx Plus Extra Description : Provide key, how? UnPackMe.7z

      • Like
    • 4 replies
    • 9.7k views
  9. Asentrix
    CrackMe · Started by Asentrix,

    Fu*ckuscator v1.1 Brand new obfuscator on the market. I've already completed this crackme but wanted to see what you guys come up with. Good luck! File Information Submitter Asentrix Submitted 12/28/2020 Category CrackMe View File

      • Like
    • 5 replies
    • 13.6k views
    ProjectTrauma
    ProjectTrauma
  10. DanielTG
    UnPackMe (.NET) · Started by DanielTG,

    DiamondVM This is a c# file protected with DiamondVM, a KoiVM mod which is really good. No OldRob will desvirtualize it. File Information Submitter DanielTG Submitted 03/19/2021 Category UnPackMe (.NET) View File

      • Sad
      • Like
      • Haha
      • Thanks
    • 1 reply
    • 15k views
  11. Cursedzx
    UnPackMe (.NET) · Started by Cursedzx,

    Difficulty : Probably 8 Language : C# .NET Platform : Windows (anyCPU) OS Version : Windows 7 Above Packer / Protector : CursedSheepMod (Modded Conf + VM) Description : Upload the Unpacked file and Give me a detailed tutorial. like... tell me the specific method or specific tools you used in order. as i said in the previous unpack challenges XD. you know the rest. ConsoleApplication3.exe

    • 1 reply
    • 6.5k views
  12. CodeOfDark
    CrackMe · Started by CodeOfDark,

    Difficulty : 2-3 Language : .NET Platform : Windows OS Version : Windows7+ Packer / Protector : PandaObfuscator (Modded Confuser) with Custom VM Description : Just basic UnpackMe, want to see if my obfuscator good/bad Screenshot : GetMe.7z

      • Like
      • Haha
    • 8 replies
    • 11.1k views
  13. johnfkingzton
    KeygenMe · Started by johnfkingzton,

    Simple KeygenMe 02 Provide a valid serial and User ID or make a keygen. Good Luck. File Information Submitter johnfkingzton Submitted 03/11/2021 Category KeygenMe View File

    • 0 replies
    • 7.1k views
    johnfkingzton
    johnfkingzton
  14. Subveiton
    UnPackMe (.NET) · Started by Subveiton,

    Difficulty : 5 (I think) Not sure Language : C# Platform : Windows x32 OS Version : Windows All Packer / Protector : PC-RET protection v1.1 Bronze :just unpack it. Silver: unpack + password of programm Gold: unpack + password + tutorial VirusTotal: https://www.virustotal.com/ru/file/2d0cbe8416c8bc72d73945eecc16cf754488e7a07d26926330e8f59f14afd8ca/analysis/1546348036/ Unpackme.exe

  15. lopeg
    CrackMe · Started by lopeg,

    Pyarmor CrackMe Try to find the key. Hint, the key contains: Specials Caps Non caps Numbers Enter the key and you will see the results. Good luck. File Information Submitter lopeg Submitted 09/12/2020 Category CrackMe View File

      • Like
      • Thanks
    • 4 replies
    • 15.3k views
  16. LoLLo90
    CrackMe · Started by LoLLo90,

    Tricky Goals: Bronze - Patch the crackme to show the correct message Silver - Bronze + explain what is happening I don't know why Windows Defender is giving a false positive. My past here should prove I am not here to harm anyone. I only used Appfuscator for renaming. I checked the file and I did not see any other obfuscation or anything annoying automatically inserted by Appfuscator (like outline method calls). Please extract all the files in a folder to make the exe work properly. Let's fight! File Information Submitter LoLLo90 Submitted 02/13/2021 Category …

    • 0 replies
    • 6.3k views
  17. localhost0
    UnPackMe (.NET) · Started by localhost0,

    Language : C# Platform : Windows Build : x86-x64 Packer/Obfuscator : SafeVM Description : Anti-VM (Removed). I want to see how strong the protection is. Screenshot : UnpackME-OUT.rar

  18. LoLLo90
    CrackMe · Started by LoLLo90,

    ClumsyVM This is my clumsy virtual machine 😃 Goals: Bronze - Patch the crackme to show the correct message Silver - Bronze + explain how the virtualized code works Gold - Silver + write a totally different virtualized code to pass the check File Information Submitter LoLLo90 Submitted 01/31/2021 Category CrackMe View File

  19. henlo
    CrackMe · Started by henlo,

    godpow#7468 CrackMe This has an anti-debugger which will constantly look for strings that'll contain the name of debuggers such as De4dot and more.. File Information Submitter henlo Submitted 12/07/2020 Category CrackMe View File

      • Haha
    • 1 reply
    • 6.4k views
  20. ιvancιтooz
    UnPackMe (.NET) · Started by ιvancιтooz,

    GOOD LUCK **this tool no have much protection** How to unpack by Inwza007: 1. use ManagedJiterFr4 jit UnpackMe and CrackMe.exe and ____.netmodule 2. use confuser Methods Decryptor 1.0 3. use Module to Assembly 4.use Universal Fixer 1.0 5. Clean String with SAE 5. UnpackMe and CrackMe.rar

      • Like
    • 16 replies
    • 22.5k views
    Floodedlegitbro
    Floodedlegitbro
  21. KamiKaze
    UnPackMe (.NET) · Started by KamiKaze,

    Olivia Mini Protector Try to unpack it ... Protections used: String Encryption Anti Dn-Spy Anti De4dot More Features File Information Submitter KamiKaze Submitted 12/04/2020 Category UnPackMe (.NET) View File

  22. Prab
    UnPackMe (.NET) · Started by Prab,

    DotNetSafer This file is packed with DotNetSafer using the following protections; Constants Protection Mutation Protection ILDasm Protection Invalid Metadata Protection Invalid Cctor Protection Name Protection Goal : Unpack the file and detail the methods you used to bypass the above protection options. File Information Submitter Prab Submitted 05/15/2020 Category UnPackMe (.NET) View File

    • 2 replies
    • 9.4k views
  23. emlin
    UnPackMe (.NET) · Started by emlin,

    ConfusedDragon This is a .NET file which has been protected by an obfuscator me and a friend developed. It contains a lot of protection methods, common DNSpy/De4Dot tools will not help. DNSpy will fail to decompile and throw errors. Good luck. File Information Submitter emlin Submitted 07/15/2020 Category UnPackMe (.NET) View File

    • 2 replies
    • 20.4k views
  24. DefCon42
    CrackMe · Started by DefCon42,

    People who patch this instead of trying to find the key are boring :^) Language : C++ Platform : Windows x64 OS Version : Windows 10 Packer / Protector : None Description : This is a simple crackme i made over the course of the last 30 minutes. Hopefully you get a little fun out of it. Screenshot : crackme.exe

      • Like
    • 7 replies
    • 9.2k views
  25. Xjun
    UnPackMe · Started by Xjun,

    Difficulty : 6 Language : C++ Platform : Windows OS Version : Windows 7 Packer / Protector :VMProtect Ultimate 3.0.8 Description : Memory Protection -Yes Import protection -Yes Resource Protection -Yes Pack the output File -Yes Debugger - user-mode+Kernel-mode Virtualization Tools -Yes using VMProtect SDK. Screenshot : UnpackMe.7z

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