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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. hiepkute1970
    UnPackMe (.NET) · Started by hiepkute1970,

    This app was protected by confuser 1.9.0 Mod Good Luck virustotal:https://www.virustotal.com/vi/file/a698dbd53aae744123932dff89674356c4b0b11b3572d1f74aa356b8d8b7c5c6/analysis/1446205416/ Unpack-Crack-.Net.rar

      • Like
    • 9 replies
    • 18.2k views
  2. GautamGreat
    UnPackMe · Started by GautamGreat,

    Simple DevirtualizeMe Created in VMProtect V2.13.5 Only one Procedure Virtualized DeVirtualized Procedure VA : 004520DC DevirtualizeMe.vmp.rar

    • 1 reply
    • 8.9k views
  3. Extreme Coders
    CrackMe · Started by Extreme Coders,

    This is a CTF style challenge. Virustotal scan findtheflag.rar

      • Like
    • 10 replies
    • 11.8k views
    Extreme Coders
    Extreme Coders
  4. NightBaron
    UnPackMe (.NET) · Started by NightBaron,

    i'm tested modded ConfuserEx Good Luck Virus Total : https://www.virustotal.com/en/file/6db9ed44b7b0ed6626e3ee0571bc65dc742dfbffed88c12a9a5a9ee6f3da8968/analysis/1436075146/ Login.rar

      • Like
    • 8 replies
    • 9.7k views
  5. 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
    • 7.6k views
  6. 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
  7. Narwhal
    KeygenMe · Started by Narwhal,

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

      • Like
    • 6 replies
    • 8.2k views
  8. 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
    • 30k views
  9. chickenbutt
    KeygenMe · Started by chickenbutt,

    Great for beginners keygenme.zip

    • 5 replies
    • 6.6k views
  10. 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
    • 8.3k views
  11. 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
  12. 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
    • 11.4k views
  13. 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
  14. 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
    • 18.5k views
  15. 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
    • 7k views
  16. 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
  17. 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
  18. 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
    • 27k views
  19. 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
  20. 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
  21. 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
    • 7k views
  22. 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
  23. 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
    • 12k views
  24. 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
  25. 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
    • 8.1k views
    Extreme Coders
    Extreme Coders

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