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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

A topic will then automagically be created and posted in these forums...

  1. Saduff
    KeygenMe · Started by Saduff,

    Valid solutions are serial and stand-alone keygen. Hope you like it. Compiler : MASM32 SSE KGM #2.zip

      • Like
    • 10 replies
    • 6.2k views
  2. Saduff
    KeygenMe · Started by Saduff,

    I've never seen x64 KeygenMes before, so I thought why not write one. This is my first x64 code. I hope there are no bugs. I kept the algo fairly simple and wrote it in MASM. Rules: - No patching! - No bruteforcing in keygen! Since there aren't any great x64 debuggers available, please tell me what debugger you used to solve this, so I could get a small overview of what people use for debugging x64 code. In case you don't know what debugger to use, I'll give you a starting point. Consider using FDBG. It's also the debugger I used to test this KGM. Good Luck! KeygenMe x64.zip

    • 18 replies
    • 7.1k views
  3. tarequl.hassan
    KeygenMe · Started by tarequl.hassan,

    A keygenMe including a keygen. Now What to do? Yes Make your won keygen and send it to me tarequl.rar

    • 3 replies
    • 4.8k views
  4. ghsafsdfsdhfghfgjhgkj
    KeygenMe · Started by ghsafsdfsdhfghfgjhgkj,

    Protection : Pc-Guard 5.x [Demo] [ 20 RUN LEFT! ] - 20 run after, use Trial Reset. PeCompact [Old Version 2001] - No Patching. - Write Keygen. Registration Example : System Code : 9024011 UserName : ProMasteR Key: pf0pszEpgvFFN/7Dzia40IzwmrggH8iIpnzg3HFKzeposLPOvYczJ UQzEe3mxifnz32qFzu6+quQlvPy142tQWFSRgieWZ+t0JMAYEIf WKf6v8cUUtoys9hhwwwv3glfJrMthewEG33KZoobknW1YW/4Uq Zstu6SxMPU6IXTZ5s= Rar Password=1 />http://www.mediafire.com/?1b1569w5bp6uyee />http://www.multiupload.com/0XW5EK0N13 />http://www.mirrorcreator.com/files/FWACQVSU/KeygenME.rar_links I don't know English!

      • Like
    • 5 replies
    • 5.9k views
    ghsafsdfsdhfghfgjhgkj
    ghsafsdfsdhfghfgjhgkj
  5. mdj

    [unpackme] ★★Uncrackable★★ login system CrackMe V3 [No Obfucated, No anti protection] by Death all credit goes to Death Exe and DLL Not Obfucated. need .net frame work CrackMe.rar

      • Like
    • 3 replies
    • 5.3k views
  6. AnTiCDLoCK
    UnPackMe · Started by AnTiCDLoCK,

    Hi, Plz Unpack this Unpack me ! unpacked file must have msgbox Correctly! Level ? Test3.rar

      • Like
    • 7 replies
    • 8.3k views
  7. thisistest
    UnPackMe · Started by thisistest,

    Happy New Year! welcome to test it~!my friend! NOTEPAD_VP 1.88.rar NOTEPAD_VP 1.92.rar

      • Like
    • 30 replies
    • 19.2k views
  8. pushxor
    UnPackMe · Started by pushxor,

    Hi, I've created a new .exe that protected with Enigma v2.60 Have fun Enigma.v2.60_20110523.UnpackMe.rar

    • 10 replies
    • 7.6k views
  9. Teddy Rogers
    CrackMe · Started by Teddy Rogers,

    Crack the code and get a job working for GCHQ... />http://www.canyoucrackit.co.uk/ Ted.

    • 13 replies
    • 6.6k views
  10. Is-It
    UnPackMe · Started by Is-It,

    Hi,everyone Unpack this one WinLicense V2.1.9.rar

  11. nguyenhung0702
    UnPackMe · Started by nguyenhung0702,

    Unpack and send to me your tutorial or script. Here is my email: blueskys0702@gmail.com.Thanks UnPackMe WL 2.1.9.rar

      • Like
    • 14 replies
    • 7.7k views
  12. X-88
    CrackMe · Started by X-88,

    This is my fourth Project Crack Me!. with variations asscii encryption password. Crack Me #4.zip

      • Like
    • 12 replies
    • 6.6k views
  13. gamecult
    CrackMe · Started by gamecult,

    Hello, I created a small program to a geotechnical laboratory in VB6. and I would like now if it is easily crackabe or not so I created a small crackme the basis of the original code.I want a tutorial if possible thow to crack it I also need to now if protection is sufficient or not. What is the best packer or encrypter program to protect my soft? Thank you for Help. CrackME with DLL's http://www.mediafire.com/file/llz21djpt8r6xjb/CrackME.rar CrackME.rar

    • 8 replies
    • 6k views
  14. Raham
    UnPackMe · Started by Raham,

    hi buddies. im back now with my present! Here is my latest unpackMe. Enabled Option Code Replace Inline Stub + Anti Attach Anti Debug Anti Dump Enhanced NanoMites Dark Code Try To UnPack and surely notice the Protection Difficulty Level. Download Sepanta Protection Beta 1.0 UnPackMe Regards Raham

      • Like
    • 22 replies
    • 1.9k views
  15. Saduff
    KeygenMe · Started by Saduff,

    Since my last KGM was too simple, then here's another one. This one should be harder. KeygenMe16.zip

      • Like
    • 15 replies
    • 6.5k views
  16. InsaneFIDO
    CrackMe · Started by InsaneFIDO,

    This is my final crackme app as there will be no more. I hope those who download it will enjoy destroying it. I have tried it on XPSP2 & XPSP3 and it will run on both with the proviso it is not blocked by excessive hooking of dlls by firewall, AV or other app. It will also fail to run if it finds anything it does not like in various places. Please read the Readme file before attempting it. Cheers InsaneFIDO FarewellUnWrapMe.zip

    • 10 replies
    • 6.1k views
  17. KKR_WE_RULE
    KeygenMe · Started by KKR_WE_RULE,

    Enjoy another cute keygen me Rules are quite simple : KEYGEN IS THE ONLY SOLN. @Encrypto : Here goes another challenge. cant access cm.de for some reason Download ReverseMe.rar Regards KKR

    • 1 reply
    • 5.6k views
  18. Noeby
    CrackMe · Started by Noeby,

    A crackme by my friend x0pc ( his first ). The crackme is not encrypted. Rules: - No brute forcing, - Write a solution how you cracked / wrote your keygen. Have fun! xCrackMe.rar

    • 1 reply
    • 5.1k views
  19. NewHitman
    KeygenMe · Started by NewHitman,

    Since This forum is still active and it is full of High level reversers I thought that it is the time to share one of my keygenmes that I have ever made well in 2009 but it stills cool 2 me . BTW all solutions r accepted. anyway give it a shot ,do your best and make me proud of you. Check out my NewHitman's Keygenme#7 http://forum.tuts4you.com/topic/24609-nh-keygenme7/page__p__116942#entry116942 Best Regards NewHitman NHKM6.zip

    • 4 replies
    • 4.7k views
  20. X-88
    CrackMe · Started by X-88,

    Crack Me This is my fifth make, hmm .. lately I mostly play games, so I rarely make anything. CM #5.zip

    • 11 replies
    • 6.3k views
  21. N1ghtm4r3
    KeygenMe · Started by N1ghtm4r3,

    No patching! Valid solution is only a keygen KeygenMe4.zip

      • Like
    • 11 replies
    • 14.6k views
  22. Gladiator
    UnPackMe (.NET) · Started by Gladiator,

    Hi Please Unpack and write a tut Enabled Options : [+] Anti OllyDbg [+] Anti Dump Protection [+] IAT Redirection

      • Like
    • 15 replies
    • 7.7k views
  23. CodeExplorer
    UnPackMe (.NET) · Started by CodeExplorer,

    [unpackMe] SampleCrackme CodeVeil3x SampleCrackme CodeVeil3x.zip

      • Like
    • 3 replies
    • 10.2k views
  24. Gladiator
    UnPackMe (.NET) · Started by Gladiator,

    Please Unpack and Crack it Options : Best Regards Magician

      • Like
    • 9 replies
    • 8.5k views
  25. ChOoKi
    KeygenMe · Started by ChOoKi,

    My first keygenme here, not too hard, not too soft, cooked al dente from an old recipe. Enjoy />http://www.sendspace.com/file/zqiwno k.g.m.1.0.rar

      • Like
    • 4 replies
    • 5.4k views

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