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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. 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
    • 15.6k views
  2. 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

  3. 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
    • 16.4k views
  4. 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
    • 11.2k views
  5. jo03
    KeygenMe · Started by jo03,

    a new challenge, have fun re01.zip

      • Like
    • 8 replies
    • 6.5k views
  6. 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
    • 19.7k views
  7. 0xDev
    UnPackMe (.NET) · Started by 0xDev,

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

      • Like
    • 14 replies
    • 16.2k views
  8. 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
    • 7.6k views
  9. 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
    • 6.4k views
  10. 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
    • 6.4k views
  11. 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
    • 16.3k views
  12. 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
  13. ChOoKi
    KeygenMe · Started by ChOoKi,

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

      • Like
    • 26 replies
    • 14.2k views
  14. 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
    • 6.5k views
  15. SHADOW_UA
    UnPackMe · Started by SHADOW_UA,

    Packer: Modified UPX UnpackME_PC-RET.zip

      • Like
    • 10 replies
    • 9.8k views
  16. 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
    • 15.8k views
  17. 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
    • 6.7k views
  18. until
    UnPackMe · Started by until,

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

      • Like
    • 7 replies
    • 29.3k views
  19. 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
  20. Pr0c3ss
    KeygenMe · Started by Pr0c3ss,

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

      • Like
    • 17 replies
    • 6.7k views
  21. Nooby
    KeygenMe · Started by Nooby,

    Goal: Write a keygen to calculate "Answer" to any given valid inputs in a reasonable amount of time. Specs: UPX packed No obfuscation or VM No patch detection “Request" data is randomized Appendix: Name: Tuts4You Request: A799CB8D37C11F8052AA59674A0E89957205F69BE447F887306A02934F4863652C418D6B268070B4B95C500B89FD89D13612D0A9961E0FA39CD033A094F015B5E0FB48BFA37D25834496AD4D68E4FA097D0454303545C89CCBD9898D96021CA8480F06414D8BD28A194C5786EA167BACBD19E259E803EBBB6C74D7367E4615873FD8CA2654055E564DFA145C1A62FAC9DE5D156709F6B6067B014C9DF4D7C7A32E7012B84859AF9A3232EF531904045F272ABBE063D75336B516226049BEAD28Scoring(100 points total): Patching - 10 points Calculate "Answer" to …

      • Like
    • 32 replies
    • 20.9k views
  22. XorRanger
    KeygenMe · Started by XorRanger,

    Hello All, Here is a Quick KeygenME I Put Together While I Was Bored Today. Rules Only Keygens Are Allowed. No Ripping Of Algos From The KeygenME. A Tutorial Would Be An Added Bonus. Language: Delphi Packer: PeCompact. Please Do Solve. Thanks XorRanger's KeygenME #5.rar

      • Like
    • 28 replies
    • 15.6k views
  23. mrexodia
    KeygenMe · Started by mrexodia,

    Hello everyone, I had some time and in that time I decided to write a small KeygenMe challenge... You need to find a name/serial combination (multiple serials for one name are possible) and it would be nice if you create a small tutorial and not say: "this is weak because: [list of weak places]" this is not really nice for the users who are still trying to solve it Don't expect many special things, the only real protection is the (lame) anti-referenced text strings feature. Solutions (with tutorial) can be send to mr.exodia.tpodt@gmail.com/by pm and will be placed on my website.. Download here (failed to attach) Greetings, Mr. eXoDia PS Forgive me for the GFX, ar…

      • Like
    • 12 replies
    • 11.8k views
  24. Asif
    UnPackMe · Started by Asif,

    Its protected with unfinished confuserex maximum setting . Packed a Test_Exe Its a nice protection UnpackMe.zip

    • 2 replies
    • 8.2k views
  25. woot332
    KeygenMe · Started by woot332,

    Easy keygenme have phun. Rules keygen only no patching or serial fishing. base.rar

      • Like
    • 8 replies
    • 6.4k views

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