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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. XenonLegend

    Hey tuts4you, I used some public well known obfuscators to protect a simple crackme. Let me know if you can unpack/deobfuscate + crack it! Picture: DL link: https://mega.co.nz/#!p4pVCYIC!w1DjcZoUHP8_1ogT8W1yCyLI-5u_RhnZdldFvtH6vHw Virustotal link: https://www.virustotal.com/nl/file/093eb0aad057a05ffef5a5673a636478fed5f6ea790b9686f76e4f1261bf5baf/analysis/ I know most of you can do it, just wanting to know if it stops the 'average' person! Goodluck!

      • Like
    • 4 replies
    • 6.6k views
  2. xSRTsect
    KeygenMe · Started by xSRTsect,

    Hello. This crackme is a bit of a challenge and may be the first crackme I have actually put some effort to. Half of this crackme is based on a library that I have coded and for wich I will provide the source code if the crackme is solved. Thanks. If the crackme crashes on some given keys - dont bitch this could be fixed but honestly I don't see a reason to. Writte a keygen and state a few words about the challenge. Greetings, xSRTsect. ALGEBRAiK.rar ALGEBRAiKv2(crash free).zip

      • Like
    • 15 replies
    • 7.7k views
  3. ChOoKi
    KeygenMe · Started by ChOoKi,

    My last one for this year and it should be fun to reverse but you might wanna take your time with it. Basic info: Compiler: Borland Delphi Packer: A walk in the park to unpack, and this time DO NOT ask GIV! Level: Just right to keep you entertained Solution: A keygen and maybe a tutorial to share your knowledge with othersEnjoy & Good Luck kgm18.7z

      • Like
    • 9 replies
    • 8.1k views
  4. Pr0c3ss
    KeygenMe · Started by Pr0c3ss,

    Hi , Crack not CD KEY Plesa.. KeygenmeXII.zip

      • Like
    • 12 replies
    • 8.1k views
  5. GIV
    UnPackMe · Started by GIV,

    By Exidous If you can unpack this post the sollution for everybody to see.

      • Like
    • 6 replies
    • 8k views
  6. MaxX0r
    KeygenMe · Started by MaxX0r,

    Hey, I'm finally done with version 7 of my KeygenMe series. I worked some nights on it and it reached now the status to make me headache. :sGood luck everyone! KeygenMe.V7.RTN.rar

      • Like
    • 32 replies
    • 15.8k views
  7. piaoyun
    UnPackMe · Started by piaoyun,

    Safengine Licensor v2.1.7.0 unpackme IF you do unpacked it please tell how to do UnpackMe_se.rar

  8. ChOoKi
    KeygenMe · Started by ChOoKi,

    Looks like it's time for another challenge. This one comes with a mix of ideas so take your time reversing them and do not expect hints any time soon Basic info/rules: Compiler: Borland Delphi Level: Designed to provide maximum fun and to test your skills, so kindly allow other members to enjoy solving it on their own Packer: Packed with free (non-commercial) and relatively easy Compressor/Protector (credit to author) to help you unpack it yourself or simply pm GIV Good luck to all and happy reversing kgm#17.7z

      • Like
    • 31 replies
    • 16.5k views
  9. Arting

    This target is protected by Themida 2.3.1.0 with Macros Virtualize VM macros with: TIGER 32 (Black) Task: Unpack target and patch check Good luck! UnpackMe Themida 2.3.1.0 + Macros.rar

      • Like
    • 3 replies
    • 11.3k views
  10. jo03
    KeygenMe · Started by jo03,

    a new challenge, have fun re01.zip

      • Like
    • 8 replies
    • 6.6k views
  11. pushxor
    UnPackMe (.NET) · Started by pushxor,

    Compiled with VS2010, Tried with de4dot 2.0.3 but failed. If you success unpack, please make a tutorial Obfuscating assembly 'Eazfuscator.NET v3.9 UnpackME.exe'... WARNING EF-4008: EVALUATION VERSION LIMITATIONS: You are not allowed to distribute this assembly. The assembly will no longer work after 09/09/2013 09:20:06. done That appeared when obfuscate it because I use Evaluation version Eazfuscator.NET v3.9 UnpackME.rar

      • Like
    • 5 replies
    • 19.8k views
  12. 0xDev
    UnPackMe (.NET) · Started by 0xDev,

    [unPackMe] .Net Safengine http://up.ht/1kbcNrB mydemo.rar

      • Like
    • 14 replies
    • 16.4k views
  13. 7Down
    UnPackMe (.NET) · Started by 7Down,

    Simple Unpackme Requirements .NET 4 or above Windows 7 or Windows 8 or 8.1 File may not run in windows XP Good luck Download https://www.sendspace.com/file/h5u9o6 Winrar password : challange .EXE Password: ??? Goodluck in unpacking and peace

      • Like
    • 3 replies
    • 7.7k views
  14. simple
    CrackMe · Started by simple,

    first, this is time waste! modified version of classic tetris for game re simulation all credit to original authors goal is to arrive to 'final level' by cheating, any solution valid. tell me how many min or second it takes u! no protections. x86CrackMe.rar

    • 5 replies
    • 6.5k views
  15. porotenoz
    UnPackMe (.NET) · Started by porotenoz,

    My .net app packed by ConfuserEx 0.2.1 (antidump only) + Enigma 4.20 UnpackMe_ce.zip

      • Like
    • 4 replies
    • 6.5k views
  16. Xons5454
    UnPackMe (.NET) · Started by Xons5454,

    Agressive settings on confuserex. Unpackme if you can Virustotal: https://www.virustotal.com/es/file/c8951bcfcaf7a4d137dd973f7049c5615ddf8196992ca6d02ac94299a3e1519f/analysis/1403641460/ Download: https://mega.co.nz/#!3dgWFQxB!fJzxNYoJohDGyZMRZf0IOxf1yljKvAiOaKmmQB3RXPU

      • Like
    • 7 replies
    • 16.4k views
  17. xSRTsect
    KeygenMe · Started by xSRTsect,

    This is a crackme I did a long time ago. Its for newbies only. C4N2.zip

      • Like
    • 17 replies
    • 14.1k views
  18. ChOoKi
    KeygenMe · Started by ChOoKi,

    A new year and a new challenge, have fun kgm16.7z

      • Like
    • 26 replies
    • 14.4k views
  19. LoLLo90
    KeygenMe · Started by LoLLo90,

    Goal: write a keygen that generates multiple serials for each name Difficulty: 3 http://uppit.com/c16oj1msete0/Magi2.rar Magi2.rar

      • Like
    • 4 replies
    • 6.6k views
  20. SHADOW_UA
    UnPackMe · Started by SHADOW_UA,

    Packer: Modified UPX UnpackME_PC-RET.zip

      • Like
    • 10 replies
    • 9.8k views
  21. CodeExplorer
    CrackMe · Started by CodeExplorer,

    Deploy LX 4.1 patch me! Valid serial: PRO-MA992-H52CY-NA6Q Let's see how the serial is tested. DeployLX4.1_patchme.zip

      • Like
    • 8 replies
    • 15.9k views
  22. xSRTsect
    KeygenMe · Started by xSRTsect,

    Its my personal contribution. I have some experience in reversing, and there are only a few (unfortunantly) crackmes like this. Please enjoy, and learn. direct link: http://serials2007.do.sapo.pt/crackmes/crackme8.rar crackme8.rar

      • Like
    • 13 replies
    • 6.8k views
  23. until
    UnPackMe · Started by until,

    clean me properly it protected with new confuserexmax label DeobMe.zip

      • Like
    • 7 replies
    • 29.4k views
  24. zaas
    KeygenMe · Started by zaas,

    enjoy Old_KeygenMe.rar Rules Only Keygens Are Allowed. A Tutorial Would Be An Added Bonus. Language: VC 6.0 Packer: AsPack2.34 Please Do Solve. Thanks If you can not solve it,ask me for a legal name & code.

      • Like
    • 9 replies
    • 6.7k views
  25. Pr0c3ss
    KeygenMe · Started by Pr0c3ss,

    Hi , Plesa keygen No patch https://mega.co.nz/#!HVwFhS4R!iW6i9M1LG8Vo-XyD9vKmINYFouuxR0jZDHr75wzpAH8 KeygenmeXV.zip

      • Like
    • 17 replies
    • 6.8k views

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