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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

A topic will then automagically be created and posted in these forums...

  1. XorRanger
    KeygenMe · Started by XorRanger,

    Hello all, here is a keygenMe written by a colleague. KeygenME .rar valid solution a working keygen. (it would be appreciated if you share your keygen's source) a tutorial would be an added bonus. Thanks.

      • Like
    • 10 replies
    • 7.5k views
  2. Ufo-Pu55y
    UnPackMe (.NET) · Started by Ufo-Pu55y,

    Encrypted: -Source code -.ctor Methods -Blop Heaps -Managed Resources -Strings [using high performance encryption method] Obfuscation: -Destroyed name heaps of metadata -Obfuscated Metadata -Automatic renaming Anti decompiler tricks DNGuard_HVM_v2.6.2.0.rar Good luck... ;T

      • Like
    • 15 replies
    • 20.8k views
  3. RDGMax
    CrackMe · Started by RDGMax,

    Here an update of crackme v2 Special Knowledge required Thanks RDG Simple Crackme 2014 v2.rar

      • Like
    • 12 replies
    • 6.7k views
  4. RDGMax
    CrackMe · Started by RDGMax,

    Hello my friends Here a simple crackme made in vb6 Goal: Try to get the correct serial number.. Difficulty: [5] of 10 RDG Simple Crackme 2014.rar

      • Like
    • 15 replies
    • 8.3k views
  5. ChOoKi
    KeygenMe · Started by ChOoKi,

    In contrast with my last challenge, this one is just plain & simple, what's not to love about that?, enjoy Objective: Make a tut for others (pdf or flash). ChOoKi.kgm.13.rar

      • Like
    • 9 replies
    • 7.8k views
  6. Unc3nZureD
    UnPackMe · Started by Unc3nZureD,

    Hi guys Since it's a common protector, it moght not be hard to unpack, but let's see how hard enigma's protection is Protected on full strength Target is a simple crackme by lena151 which I protected. I hope it's not a problem that I used it Good Luck [Later I might bring some better unique crackme too.] reverseMe.7z

      • Like
    • 4 replies
    • 11.2k views
  7. SHADOW_UA
    UnPackMe · Started by SHADOW_UA,

    My second unpackme. This time it is protected with RLPack with some features UnpackME_2.zip

      • Like
    • 13 replies
    • 9.1k views
  8. SHADOW_UA
    UnPackMe · Started by SHADOW_UA,

    Here is a new challenge for you guys, this time it is protected with private exe protector 5.0.0 PEP_UnpackME_5.0.0.zip

      • Like
    • 17 replies
    • 9.8k views
  9. bofstoff
    KeygenMe · Started by bofstoff,

    x86obf will feature regular KeyGenMe contests with prize money for the first person/team to solve the task before the deadline.The first x86obf KeyGenMe contest has been released (prize is $100). The binary, rules and other information is in a .zip archive - download link is on the left side of this page. More info here: http://x86obf.com/contest.php x86obf_keygenme_contest.zip

      • Like
    • 3 replies
    • 5.6k views
  10. 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
    • 6.4k views
  11. 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
    • 7.3k views
  12. 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
    • 7.7k views
  13. Pr0c3ss
    KeygenMe · Started by Pr0c3ss,

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

      • Like
    • 12 replies
    • 7.8k views
  14. GIV
    UnPackMe · Started by GIV,

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

      • Like
    • 6 replies
    • 7.8k views
  15. 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
    • 15k views
  16. 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

  17. 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
    • 16.1k views
  18. 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
    • 11k views
  19. jo03
    KeygenMe · Started by jo03,

    a new challenge, have fun re01.zip

      • Like
    • 8 replies
    • 6.3k views
  20. 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
    • 19.5k views
  21. 0xDev
    UnPackMe (.NET) · Started by 0xDev,

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

      • Like
    • 14 replies
    • 15.9k views
  22. 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
    • 7.5k views
  23. 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
    • 6.2k views
  24. 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
    • 6.1k views
  25. 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
    • 16k views

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