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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. Asian Dragon
    UnPackMe · Started by Asian Dragon,

    UnpackMe VMprotect Ultimate v2.12.3 crackme.vmp.rar

      • Like
    • 14 replies
    • 12.6k views
  2. White
    UnPackMe · Started by White,

    Safengine has released its Protector today.And Here is two UnPackMes. "UnPackMe_se_220_Default.exe" is the default Protect option. "UnPackMe_se_220_Mid_VMed_6Routine.exe" is My Packed which uses some other option etc. Hope You can like it. If you have Unpacked it. Will you make something to be known to the public ? UnPackMe_se_220.rar

      • Like
    • 3 replies
    • 21k views
  3. Ownage
    CrackMe · Started by Ownage,

    Ever had trouble with Police? Check this police box (Linux again) PB.zip

    • 0 replies
    • 5.2k views
  4. Ownage
    CrackMe · Started by Ownage,

    Not too much to say about but let the following be a storyline of the challenge: "This program is believed to be used to check validity of superheroes' secret passwords." Your objective is to analyze the program and find the secret passswords. It's up to you if you want to submit your answer here or via PM to me. It will be up for a week then I will post my detailed solving method. Enjoy it! OldSkewl.zip

      • Like
    • 10 replies
    • 5.8k views
  5. Ownage
    CrackMe · Started by Ownage,

    This time we switch the format Figure out what this does, then do it backwards! (Again, just like last time, you are looking for a flag/solution/password). reversible.zip

    • 1 reply
    • 4k views
  6. Blue
    KeygenMe · Started by Blue,

    Hello everyone, Here's my new KGM challenge for learners. As the name suggest this is a puzzle and I guess to solve this you must have some knowledge about something I will not reveal here what knowledge. Try yourself to find it One more thing, if you try to patch this KGM, you have to understand it else it will warn you A valid submission is: 1. Only a keygen coded on your own. Rules 1. No brute force, no code ripping or patching If you have some time write a nice tutorial explaining the method and technique used inside. Puzzler KeygenMe #fixed.zip

      • Like
    • 6 replies
    • 12.5k views
  7. Guest 2cool4u
    UnPackMe · Started by Guest 2cool4u,

    You need to make it accept not valid username and userkey. When you run the app first select cracktest.exe as a program and than fill in username and userkey and than click run program. If it says "sorry invalid vip member" than you are failed and if it says something like "valid" and closes itself than you have successfully bypassed the login check. You need to upload the cracked bin to prove it that you have cracked it. Rate the difficulty level. Good Luck. delphicrackmehard.rar

      • Like
    • 34 replies
    • 21.2k views
    Anonymous At4re Nayarit
    Anonymous At4re Nayarit
  8. tehpro
    CrackMe · Started by tehpro,

    Your goal in each of these levels is to find the password which will lead to the congratulations screen displaying the second password. Level 3 [easy] http://www.sendspace.com/file/s8fvuw Level 4 [easy] http://www.sendspace.com/file/mmnqiz Level 5 [easy] http://www.sendspace.com/file/21d742 Level 6 [easy] http://www.sendspace.com/file/b0to19 Level 7 [medium] http://www.sendspace.com/file/tfyglr Level 8 [medium] http://www.sendspace.com/file/b5reev

    Anonymous At4re Nayarit
    Anonymous At4re Nayarit
  9. LordCoder
    CrackMe · Started by LordCoder,

    Hello! I made a new crackme with this things: Language: Visual Basic .NET Protection: ExePack.NET Rules: Crack this crackme to show the good message. But you can't dissamble the code, edit it and compile it again! So you can't use Reflexir. Let's see how you do it Level: 2/10 crackme_lordcoder.rar

      • Like
    • 5 replies
    • 6.2k views
  10. cjteam
    UnPackMe · Started by cjteam,

    1.project.rar Packed: dongle and VM 2.This simple。project simple.rar Packed: dongle and not VM Project1_new_xuniji1.rar project simple.rar

      • Like
    • 9 replies
    • 9.1k views
  11. LordCoder
    KeygenMe · Started by LordCoder,

    Hello! I'm going to post a new keygenme for .NET reversers. Language: Visual Basic .NET Encryption: Maths and Base64 (and your mind) Rules: Only keygen accepted. Valid serial also accepted. Not patching or crack. Level of difficult: 2/10 (but you choose) Packer: me KgMe.rar

      • Like
    • 13 replies
    • 6.1k views
  12. zeger
    UnPackMe · Started by zeger,

    Try this UnpackMe IAT repair and check file intergrity I feel very difficult Click Provisional_20110820_153307.exe to install temporary authorization, the authorization for 90 days. Then you can open the vcmfc_se_hasp.exe, debugging. vcmfc_se_hasp.rar

    • 3 replies
    • 14.7k views
  13. tehpro
    KeygenMe · Started by tehpro,

    Your goal here is to find the correct password to the program from which you'll be given the success message which will contain another password. http://www.sendspace.com/file/a2nz35

    • 4 replies
    • 8.4k views
  14. tehpro
    KeygenMe · Started by tehpro,

    Your aim is to find the password required to display the other password. http://www.sendspace.com/file/za16nb

    • 4 replies
    • 6.2k views
  15. _or_75
    UnPackMe · Started by _or_75,

    Packed: Safengine Shielden 2.9.0 -> RLPack 1.21 -> Enigma 3.8. Password please. UnpackMe_se_rlp_enig.rar

      • Like
    • 16 replies
    • 12k views
  16. richyb
    UnPackMe (.NET) · Started by richyb,

    This is my first ever CrackMe Coded in Vb.Net I wont give hints away on how its protected but your task is to unpack/deobfuscate and post the correct password Hoping its not too easy Enjoy CrackMe.rar

    • 4 replies
    • 13.8k views
  17. zAWS!
    KeygenMe · Started by zAWS!,

    Hi .. it's first My keygenMe for anybody care with Android Reversing .. it's a medium protection "NOT FOR BEGINNING" it's need a good skills on Android OS & dalvik opcode i left Application without obfuscation to be clear for anyone want to study it if you have any question ..please ask ----------------------------------------------------------------------------------------------------------- zAWS! KeygenMe#1.rar

    • 3 replies
    • 6.2k views
  18. GIV
    UnPackMe · Started by GIV,

    Armadillo 9.60 unpackme. Protections: CopyMem II plus DebugBlocker and Memory Patching Goal1: Find the password to run the file Goal2: Unpack the file Armadillo 9.60 Unpackme.rar

      • Like
    • 32 replies
    • 30.9k views
  19. converse
    UnPackMe · Started by converse,

    Hello to all! suggest to unpacked this unpaсkme preferably with details and video I did not get even hide the debugger(ollydbg) from detection Thank you very much forward to the results unpackme_obsidium_1.4.6.0.rar

  20. Asian Dragon
    UnPackMe · Started by Asian Dragon,

    Packer: Safengine Shielden V2.0.1.0 link download: http://www.mediafire.com/?968bamqbah8tyyw

      • Like
    • 7 replies
    • 11.4k views
  21. _or_75

    Packed: Net Reactor 4.5, Safengine 2.9, VMProtect 2.12.3 Password Please. UnpackMe_se.vmp.rar

      • Like
    • 7 replies
    • 11k views
  22. Klinzter
    KeygenMe · Started by Klinzter,

    after a few weeks of coding this C++ KeyGenMe DLL COM Component.. Here I come to challenge you guys to make a KeyGen. the package contains 3 files >KeyGenMe.exe >KeygenMe.dll = (the target) >reg_dll.bat = (to register the dll) KeyGenMe_v1.6_WinXP.rar

    • 12 replies
    • 5.7k views
  23. LulzCoder
    KeygenMe · Started by LulzCoder,

    Hi there, Here is a new keygenme challange for keygenners. Some details : Level : 7/10 Goal : Make a valid keygen Rule : Do not rip codes, code your own. Submission : Submit a valild keygen with video or text tutorial. And as by level it's not for begainners. You must have good concept over maths. First 3 valid submitters will win this challenge. challange.zip

  24. Onlykl
    CrackMe · Started by Onlykl,

    Hello there this is my first crack me and I'm testing my app So please crack mine app and tell me from 0-10 how hard is it and what should i make better? CrackMe #1.zip

      • Like
    • 12 replies
    • 6.5k views
  25. Klinzter
    KeygenMe · Started by Klinzter,

    This is a totally different approach to the other keygenMe's that I've created before but looking forward to see a keygen. if you make one give some rating between 1 and 10 of how hard it was.. and if you can show me a little video showing how u did it.. Note: make sure that you create your own keygen without using the one I provided.. the DLL is only for demo purposes and NOT to be used for a (keygen) Keygen_Me_1.5.rar

      • Like
    • 13 replies
    • 6.3k views

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