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

    Edit text in label Good Luck Edit Me.rar Virus Total https://www.virustotal.com/en/file/e0cab396ecf90499a435f624f2f26caed716071a86187c2ed85a50b21e195b10/analysis/1445690219/

      • Like
    • 3 replies
    • 7.5k views
  2. Jasi2169
    CrackMe · Started by Jasi2169,

    Android Crackme 2 Difficulty:- Easy Challenge:- Crack The App Download :- http://www90.zippyshare.com/v/5HaMObdH/file.html

    • 4 replies
    • 7.6k views
  3. Narwhal
    KeygenMe · Started by Narwhal,

    Screenshot Patch and find a Keygen Download Link : CrackMe7 - Difficulty 3.rar

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

    Hi guys. Nice to meet you. this app was protected by Shielden+DNGuard. Have a try,If you got it,Describe how to do it,thanks... sorry my poor english,sorry my chinglish ! ((o(^_ ^)o)) ((o(^_ ^)o)) ((o(^_ ^)o)) ((o(^_ ^)o)) UnPackMe.rar

      • Like
    • 30 replies
    • 29.9k views
  5. chickenbutt
    KeygenMe · Started by chickenbutt,

    Great for beginners keygenme.zip

    • 5 replies
    • 6.6k views
  6. 0xNOP

    Nothing fancy with this Deob/CrackMe just as simple as it gets, find the correct Activation Key for the generated Serial Number Hope you guys have fun with this one https://mega.nz/#!Ct4TVbZA!GyLfm7WZW-7WKpL2rIzhNtoDz0-4dnNEdjTv39yJEZM Maximum Security Sample - 0x90.zip

      • Like
    • 9 replies
    • 8.2k views
  7. vietnguyen09
    UnPackMe (.NET) · Started by vietnguyen09,

    Confuser custom + 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
    • 7.9k views
  8. bomblader
    KeygenMe · Started by bomblader,

    1. Crack it (so it accepts any password) 2. Find the password How difficult was it? (on a 1-10 scale) Protections used: you'll find out along the way. Have fun! hi.rar

      • Like
    • 6 replies
    • 11.3k views
  9. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    Please upload your unpacked and cracked file. Crack Me Ben Mhenni Packer.rar

      • Like
    • 1 reply
    • 10.5k views
  10. CodeExplorer
    UnPackMe · Started by CodeExplorer,

    [unpackMe] Jar2Exe v2.1The purpose is unpacking. If you can unpack this write a tutorial. Jar2ExeUnpackMe.zip

      • Like
    • 14 replies
    • 18.4k views
  11. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

    Please upload unpacked and cracked file to do this challenge. Crack Me Ben Mhenni v2.rar

      • Like
    • 3 replies
    • 6.9k views
  12. Asif
    UnPackMe (.NET) · Started by Asif,

    I think i fully unpacked why exe not running problem . can u make it solution where is problem its not unpacked with de4dot . its my own test_exe . dont know if it correct section . hopping for a solution the running problem . i traced it return in Agile_dotnet_Unpacked.zip

      • Like
    • 7 replies
    • 9.8k views
  13. yypE
    KeygenMe · Started by yypE,

    Hello! A stupid KeygenMe,and I hope it'll be of fun... screenshots: Download Link: CrackMe.rar You need to provide 2 Name/Codes to win the game a correct key was given: Name: YYPEgoto(% Code: WJUQNUKVORONMLKKLMNO Either Cracking or Keygening will be great! VC6 released, mfc library was not taken. Having fun! greetz (Reprinted frome LCG)

    • 4 replies
    • 8.8k views
  14. Ufo-Pu55y
    UnPackMe (.NET) · Started by Ufo-Pu55y,

    -Anti-Debugger Detection : Advanced (* Not Ultra, due to trial) -Anti-Dumpers : Yep -Entry Point Obfuscation : Yep -Resources Encryption : Yep -Advanced API-Wrapping : Level 1 (* Not Level 2, due to trial) -Anti-Patching : None (* Due to trial) -Metamorph Security : Yep -Memory Guard : Yep -Monitor Blockers : Yep -CodeReplace Technology : Disabled (* Not supported for .NET) -API Virtualization Level : 10 -Entry Point Virtualization : 100 -Multi Branch Technology : Disabled (* Due to trial) -Encrypt Application : Yep -.NET Assembly Protection : Yep -F@cked Filesize : Yep (*From 28kb to 604kb) -:X : Yep UnpackMe_Themida_1930.rar Good luck..

      • Like
    • 31 replies
    • 26.9k views
  15. 0xNOP
    UnPackMe · Started by 0xNOP,

    Nothing fancy for the app, is a concept to those builders people use in Malware/Server Generators, The Stub is currently missing but you can use literally anything as the Stub xD Just pick any executable, copy it to the builder directory and rename the file to "Stub.exe" it should work as expected. Simple DeObfuscateMe - AznObfuscator Custom (ConfuserEx) For me it's very difficult to deob, If you can do this, then you are all f!@# gods xD Tried everything: Dumping -> Leaves Crashing app, Tried Fixing it, Failed... Used CC tools, None worked. Using UnConfuserEx Seems to work, but leaves app crashing -> Tried Fixing and still crashes... …

    • 0 replies
    • 8.4k views
  16. 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
    • 6.6k views
  17. 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
    • 6.9k views
  18. 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
    • 6.9k views
  19. 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
    • 11.9k views
  20. 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
    • 13k views
  21. 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
    • 8k views
    Extreme Coders
    Extreme Coders
  22. 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
    • 8k views
  23. CodeNatif
    UnPackMe (.NET) · Started by CodeNatif,

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

      • Like
    • 13 replies
    • 14.5k views
  24. lixiaocao

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

      • Like
    • 7 replies
    • 9.7k views
  25. 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…

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