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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.

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  1. 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
    • 9.5k views
  2. 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
    • 10.3k views
  3. 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
    • 14k views
    ProjectTrauma
    ProjectTrauma
  4. 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
    • 15.3k views
  5. 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
    • 6.7k views
  6. 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
    • 11.4k views
  7. 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
    • 7.5k views
    johnfkingzton
    johnfkingzton
  8. 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

  9. 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
    • 16.1k views
  10. 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
    • 6.5k views
  11. 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

  12. 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

  13. 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
    • 6.7k views
  14. 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
    • 23k views
    Floodedlegitbro
    Floodedlegitbro
  15. 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

  16. 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
    • 9.7k views
  17. 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
    • 20.7k views
  18. 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
    • 9.7k views
  19. 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

  20. lucifeey
    UnPackMe (.NET) · Started by lucifeey,

    Difficulty : idk Language : .NET Platform : Windows x64 OS Version : All Packer / Protector : ConfuserEx 1.0.0 Description : Give the unpacked file + tutorial how to unpack it. [!] The file should be runnable after unpacking it [!] Screenshot : Spoiler UnPackMe01.zip

      • Like
    • 14 replies
    • 30.6k views
  21. Zyhes
    UnPackMe (.NET) · Started by Zyhes,

    Difficulty: 3-5 Language : .NET Platform: Windows OS Version: All Packer / Protector : ConfuserEx Fork Description : Pretty heavily forked ConfuserEx and I'm not sure if it's good or not. If you get it cracked please post how you did it and don't just say "I used public tools", tell what tools and how. Thank you! Screenshot : Download : CrackMe.exe

  22. SimplyMercurial
    CrackMe · Started by SimplyMercurial,

    Poetic AutoIt (string/integer obfuscation) This is a simple CrackMe consisting of an input. The correct input is two stanzas of a particular poem and will reveal a label of the poem title and author upon success. Otherwise, "Try again..." will be displayed. If I'm allowed to be picky, I'm primarily interested in scripted efforts to RegEx analyze strings/integers. Very little effort (as in none) went into hiding the correct string. The script was merely passed-through a self-made obfuscator. Full disclosure: It contains rudimentary debugger and compilation checks which, if failed, falls into a while loop with a one second sleep (harmless). But, as stated abov…

  23. wwh1004
    CrackMe · Started by wwh1004,

    A Crackme with Math Problem Just run it. It is an interesting math problem. No vm, no obfuscation. You can debug it with dnSpy even Visual Studio. You should use public method inside this crackme to generate a valid hex string and make program output correct string. File Information Submitter wwh1004 Submitted 08/07/2020 Category CrackMe View File

    • 1 reply
    • 8.4k views
  24. Ninjego1
    CrackMe · Started by Ninjego1,

    CrackMeBoi I made a custom obfuscator and I haven't made any progress cracking it so please crack the file with my custom .NET obfuscator. Do not use OllyDbg or any software of that kind, you can use Mega Dumper and other tools similar. File Information Submitter Ninjego1 Submitted 06/03/2020 Category CrackMe View File

    • 2 replies
    • 6.8k views
  25. 0x72
    UnPackMe · Started by 0x72,

    Language : Python Platform : Windows OS Version : All Packer / Protector : My Protector (https://github.com/robert169/Python-Obfuscator) Description : Want to see how long it takes to get it unpacked, is easy tho but i want to know where can i improve it Spoiler Screenshot : Download : Protected.py

    • 1 reply
    • 7.7k views

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