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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. man of the war
    CrackMe · Started by man of the war,

    He Friend's This First ( CrackMe ) Message For WIN ( GooooooD ) I Nedd Correct Serial Link Enjoy !!!!

      • Like
    • 5 replies
    • 6.7k views
  2. vietnguyen09

    ConfuserEx custom maximum advanced obfuscator + SmartAssemblie lastest Welcome challenge! Hope this file can make you feel interesting and please give me some feedback about how hard to unpack it. 1 = Too easy 2 = It's OK 3 = Hard (Need advanced skills) 4 = Really hard 5 = Unbeliveble Thanks for your time. UnpackMe1.zip

      • Like
    • 4 replies
    • 7.1k views
  3. 0xNOP
    CrackMe · Started by 0xNOP,

    Used: 1. RPX - 4 Passes 2. DeepSea Obfuscator - 3 Passes 3. ConfuserEx 0.5.0-Custom by Me - 1 Pass ---- Objectives: Successfully DeObfuscate the application then Find the Password. If you feel willingly, please write a tutolrial. SecuritySuite.zip

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

    Updated 30/6 Inspired by HellSpider's topic i upload a simple unvirtualizeme protected with latest licensed Oreans Code Virtualizer, for research purposes. It supports 4 types of VMs, each can be "white" , "red" or "black" (small, bigger, biggest). Pressing buttons 1-4 will pop up 2 messageboxes. Source: int Func1(int a, int b, int c){ VIRTUALIZER_FISH_RED_START MessageBoxA(0, "Fish Red", "UnvirtualizeMe", 0); Sleep((a + b + c) % 1000); MessageBoxA(0, "Complexity 2/10 Speed 9/10 Size 260", "Fish Red", 0); return GetTickCount(); VIRTUALIZER_FISH_RED_END }void* Func2(int* a, int* b, int* c){ VIRTUALIZER_PUMA_BLACK_START MessageBoxA(0,…

      • Like
    • 10 replies
    • 12.2k views
  5. X-88
    KeygenMe · Started by X-88,

    Very simple Key Gen Me. Level : i don't know? thx 4 trying X-88 KeyGen Me #9.zip

      • Like
    • 7 replies
    • 13.1k views
  6. bomblader
    KeygenMe · Started by bomblader,

    I have finished my little login system and it would be awesome if you guys will be able to test it. I created it in a challenge-style. Find the secret! Good luck. Also, please tell me how hard it was on a 1-10 scale. (1 being the easiest, 10 hardest) Posting the method you used would also be great, so I can patch it. Thank you. aa.rar

      • Like
    • 9 replies
    • 8.3k views
    Extreme Coders
    Extreme Coders
  7. NCK
    UnPackMe (.NET) · Started by NCK,

    Hello all.UnpackMe,Try it. Target: Can be compiled. Can be run. Good Luck EveryBody. My nickname is "Net7Cracker" ,Don't call me "381400744" plz. UnapckMe_www.unpack.cn_.rar

      • Like
    • 6 replies
    • 8.2k views
  8. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    The objective is to deob and crack these files ! 2 CrackMe - Confuser.rar

      • Like
    • 13 replies
    • 14.6k views
  9. lixiaocao

    Protect : Confuser + Dotfuscator + BOX Welcome challenge! unpackme.rar

      • Like
    • 7 replies
    • 10k views
  10. SmilingWolf
    UnPackMe · Started by SmilingWolf,

    Hello everybody! Today I would like to present you all an unpackme protected with the latest version of SoftwarePassport/Armadillo. This one is one of the most complete Armadillo unpackmes ever made, implementing almost everything Arma puts in the hands of the user ranging from the simple "Protect with password" to the nanomites, the code splices and everything in between. I have tried not to make it too easy for you all, just take a look at it The final goal is to manually unpack it, study it and show you have been able to read the first file you see when opening the password protected archive attached to this post (Mistery.7z). Enjoy! Unpackme.7z Mi…

  11. CodeNatif
    CrackMe · Started by CodeNatif,

    To meet this challenge you must upload the file deobfuscated and cracked. CrackMe - Good Level.rar

      • Like
    • 5 replies
    • 6.7k views
  12. XorRanger
    KeygenMe · Started by XorRanger,

    Here is a KeygenMe written by a friend, He requested i should upload this as a challenge here. Here is it KEYGENME.rar

      • Like
    • 2 replies
    • 11k views
  13. li0nsar3c00l
    UnPackMe (.NET) · Started by li0nsar3c00l,

    hey guys, as some of you may already know, I've been working on an obfuscator for quite a long time. https://www.disguiser.net/ There is still a lot of stuff to improve, but I' like to know, how long it takes an experienced reverser to code a Keygen for this. All features are present in normal mode, so I still have something harder in case this is too easy for you guys I'd rate it 6/10, let me know what you think PS. it might not be the best nor innovative, but its mine! if you find my hidden messages, you will get something from me (yeah, plural! and PM me for your small gift, once you found them) greetz li0nsar3c00l [RTN] Keygen…

      • Like
    • 9 replies
    • 10.8k views
  14. NightBaron
    UnPackMe (.NET) · Started by NightBaron,

    Good Luck Virus Total : https://www.virustotal.com/th/file/e6dcf5004d43919b632ca5817fea7235a491fc82c2e76cc5a1d523a706dfbea0/analysis/1434856735/ *if password correct msgbox "เก่งจ้า : D" UnpackMe.rar

      • Like
    • 2 replies
    • 12k views
  15. CodeNatif

    To meet this challenge you should unpack fully this file. CrackMe_Packed.rar

      • Like
    • 4 replies
    • 9.5k views
  16. sondeay
    CrackMe · Started by sondeay,

    UPX VM Note: Access Successfully. a good CrackMe KeygenMe.rar

    • 1 reply
    • 6.3k views
  17. Guest RiiX
    UnPackMe (.NET) · Started by Guest RiiX,

    Hii, I test a protection for research, try to unpack ^^ Good luck ^^ UnpackMe.rar

      • Like
    • 8 replies
    • 13.1k views
  18. Xer0x
    UnPackMe (.NET) · Started by Xer0x,

    Protect : DotNetPatcher + .... - Post Unpacked File Here - If Possible , Can you give me tutorial please Good Luck UnpackMe.rar

    • 5 replies
    • 10.9k views
  19. XenocodeRCE
    UnPackMe (.NET) · Started by XenocodeRCE,

    Very simple modded version, nothing special. CrackTest_.rar

      • Like
    • 3 replies
    • 10.1k views
  20. Kido
    UnPackMe · Started by Kido,

    This is a simple UnpackMe using VMProtect Ultimate v2.13.5. I also used vmp's licensing system in this UnackMe, and locked one function with key. I have provided 3 different keys for this bin. A blocked key ,a valid key locked with a hwid(which i suppose no one has th same hwid) and an expire key. I also added 2 anti-debug thread to this file. Using VMProtectIsDebuggerPresent(if you have sod, i guess you can bypass this one pretty easy) and VMProtectIsValidImageCRC(crc). Didn't use VMProtectDecryptString feature. Several things I expect from this UM: Simply unpack it. Bypass the blacklist key. Bypass the expired situation. Patch hwid. Better create a …

      • Like
    • 16 replies
    • 23.6k views
  21. Lion-_17
    CrackMe · Started by Lion-_17,

    CrakMe-Lion-_17.rar

      • Like
    • 8 replies
    • 8.2k views
    Teddy Rogers
    Teddy Rogers
  22. Lion-_17
    CrackMe · Started by Lion-_17,

    This is my first CrakMe CrakMe Lion-_17.rar

      • Like
    • 7 replies
    • 7.8k views
    Teddy Rogers
    Teddy Rogers
  23. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    The aim is deob and crack this file. (Medium) CrackMe - ConfuserEX 0.5.0.rar

      • Like
    • 2 replies
    • 10.6k views
  24. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    The aim is deob and crack this file. Simple CrackMe - ConfuserEX 0.5.0.rar

      • Like
    • 2 replies
    • 10.3k views
  25. CodeEnding
    UnPackMe (.NET) · Started by CodeEnding,

    -I use function encrypt string only Good luck UnpackMe.rar

    • 6 replies
    • 10.6k views

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