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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. 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
  2. 0xDev
    UnPackMe (.NET) · Started by 0xDev,

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

      • Like
    • 14 replies
    • 16.1k views
  3. 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
  4. 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
  5. 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
    • 6.3k views
  6. 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
    • 16.2k views
  7. xSRTsect
    KeygenMe · Started by xSRTsect,

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

      • Like
    • 17 replies
    • 14k views
  8. ChOoKi
    KeygenMe · Started by ChOoKi,

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

      • Like
    • 26 replies
    • 14.1k views
  9. 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
    • 6.4k views
  10. SHADOW_UA
    UnPackMe · Started by SHADOW_UA,

    Packer: Modified UPX UnpackME_PC-RET.zip

      • Like
    • 10 replies
    • 9.7k views
  11. 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
    • 15.7k views
  12. 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
    • 6.6k views
  13. until
    UnPackMe · Started by until,

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

      • Like
    • 7 replies
    • 29.3k views
  14. 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
    • 6.6k views
  15. 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
  16. 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
    • 20.7k views
  17. 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
    • 15.4k views
  18. 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
    • 11.7k views
  19. Asif
    UnPackMe · Started by Asif,

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

    • 2 replies
    • 8.1k views
  20. 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
  21. LordCoder
    KeygenMe · Started by LordCoder,

    Hi, I made an easy serialme. I hope you like it. Algo: Custom made by me (not too complicated ) Obfuscation: None Rules: Just find the correct key (it needs some cals to find it). I hope you like it! SerialMe.rar

      • Like
    • 6 replies
    • 6k views
  22. kao
    KeygenMe · Started by kao,

    Hi guys, After being idle for a long long time, I'm happy to present you a small challenge. I hope it will keep you busy for a while. From the readme: Requirements: .NET 2.0, tested on 32bit XP, 64bit Win7, 32bit Win8. Have fun! kao. GotSkills_by_kao.zip

      • Like
    • 15 replies
    • 8.7k views
  23. XorRanger
    KeygenMe · Started by XorRanger,

    Hello All, It's been a While Since I Posted Any Challenge This Should Be Quite Easy But I Will Let You all Decide Solution: Only Keygens Are Allowed. A Tutorial Would Be An Added Bonus. Language: Delphi Packer: UPX. Simply Use "upx -d " to Decompress Please Solve. Thanks XorRanger KeygenMe #4.zip

      • Like
    • 13 replies
    • 6.4k views
  24. Gladiator
    UnPackMe · Started by Gladiator,

    Hi Please Unpack and rate it Artan maybe be new persian protector... thanks. Hint : Attachment file has been changed because of my mistake ( incompatible in some windows ) UnpackMe.rar

      • Like
    • 26 replies
    • 17.5k views
  25. 0xDev
    UnPackMe (.NET) · Started by 0xDev,

    This is the latest version of DnGuard HVM Enterprise V3.66, and all options were used when creating this unpackme. Download Link: http://www.sendspace.com/file/s0ovkr CrackMe(DNGuard v3.66).rar

      • Like
    • 11 replies
    • 22.6k views
    VictoLobbytes
    VictoLobbytes

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