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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. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    You must post them unpacked file or find the right password ! List of people who have successfully met the challenges 1: -SHADOW785 -GIV - - - List of people who have successfully met the challenges 2 (very hard): -SHADOW785 -abcd - - - Very HardCodeNatif CrackMe2.rar CodeNatif CrackMe1.rar

      • Like
    • 4 replies
    • 7.4k views
  2. CodeNatif
    CrackMe · Started by CodeNatif,

    You must find the correct password or unpack and cracker the file, thank you for not displaying the correct password to let a chance at all. Failled: Cracked: List of people who have successfully met the challenges: -abcd - - - - CrackMe.rar

      • Like
    • 2 replies
    • 6.2k views
  3. XorRanger
    KeygenMe · Started by XorRanger,

    Hello once again Here is a quick KeygenME i put together for newbies in keygenning. I know most people will solve this under 5 minutes. Rules No rules. Solutions A working keygen that can generate more than one key per name : Diamond A working keygen that can generate one key per name : Gold A valid name serial combo : Silver Patching : Bronze A Tutorial would be appreciated.Please Do Solve. Thanks. XorRanger's KeygenME #6.zip

      • Like
    • 9 replies
    • 8.8k views
  4. _or_75
    UnPackMe · Started by _or_75,

    Project1_se.rar

  5. Gyver75
    CrackMe · Started by Gyver75,

    I've downloaded this crackme long time ago. Its difficult could be 2/10 but it's really funny and, above all, instructive. If you want to try something different ... Crackme.rar

      • Like
    • 5 replies
    • 6.3k views
  6. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    You must find the correct password or unpack and crack the file, upload the unpacked file or show me password. Failled: Cracked: List of people who have successfully met the challenges: -abcd - - - - HARDCrackMe By CodeNatif.rar

      • Like
    • 3 replies
    • 6.2k views
  7. KKR_WE_RULE
    KeygenMe · Started by KKR_WE_RULE,

    Time for my AfterBurner ..YEAH!! Okie.. Rules asways : Keygen is the only soln. No Patching, bruting etc Level : 4. This one will make you think .. I hope Anyway.. Have a gr8 time reversing Regards Download here : AFTERBURNER.zip XP bug has been fixed. TESTED ON XP SP3 & Win7

      • Like
    • 8 replies
    • 7.8k views
  8. Office Jesus
    KeygenMe · Started by Office Jesus,

    Hello, everyone!I want to present my first keygenme in quite a while. This one is a continuation of a series I started 4 years ago. (You can find Fun KeygenMe #0 on crackmes.de, of course.)The main goal with this "series" is to help ease novices into the art of reversing (patching, keygenning, etc.) while having a bit of fun. I hope that you guys will solve this and provide tutorials. Hopefully the tutorials will be spread around the Internet for all new people to enjoy and learn from!Features of this keygenme: Coded (poorly) in MASM Not packed No cryptos Simple yet tricky? Difficulty: 1-2/10 I have it on good authority that this keygenme is a 1 or 2 on the crackmes.de…

      • Like
    • 6 replies
    • 8.4k views
  9. lena151
    UnPackMe · Started by lena151,

    lARP v2.0 Ultimate My 2008 challenge is this small UnpackMe from Ultimate version of lARP protector. All options checked except pre-compression. Just unpack. Big thanks to my buddies Ufo-Pu55y for researching some really neat stuff and jstorme for his continued support and testing. Thanks guys, I shall remember you in my morning, noon and evening lARP prayers Remark1: when it's all too obvious that you are on a reverser's system, a lARP'ed file may display a warning or even crash, also outside debugger In such case, just unpack to remove all limitations Remark2: there is now some experimental code in lARP. Love and best care have been applied to make it, still, if …

      • Like
    • 41 replies
    • 33.8k views
  10. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    Here's a little unpackme to be a bit complicated to unpack for some ! Fichier: https://open.ge.tt/1/files/7BAbRy42/0/blobVirus Scan: https://www.virustotal.com/fr/file/59d2f...416568916/ Upload the unpacked file please. List of people who have successfully met the challenges: -CodeCracker -abcd - - - Hard unpackme.zip

      • Like
    • 6 replies
    • 9.9k views
  11. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    I makes you available this little challenge: https://open.ge.tt/1/files/3gZgbm42/0/blob Virus Scan: https://www.virustotal.com/fr/file/15bef72a7bc05c1cbd7622c3e466062dc7e7f368c5adca9ca112b112326801f5/analysis/1416591531/ Please upload unpacked file. Hard UnpackMe By Ben Mhenni.zip

      • Like
    • 9 replies
    • 8.6k views
  12. 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
    • 7.7k views
  13. 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
    • 21.2k views
  14. RDGMax
    CrackMe · Started by RDGMax,

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

      • Like
    • 12 replies
    • 6.9k views
  15. 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
    • 8.5k views
  16. 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
    • 8k views
  17. 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
    • 11.3k views
  18. 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
    • 9.3k views
  19. 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
    • 10k views
  20. 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
    • 5.7k views
  21. 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
  22. 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
    • 7.6k views
  23. 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
    • 8k views
  24. Pr0c3ss
    KeygenMe · Started by Pr0c3ss,

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

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

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

      • Like
    • 6 replies
    • 8k views

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