Skip to content
View in the app

A better way to browse. Learn more.

Tuts 4 You

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

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. grizzmo
    KeygenMe · Started by grizzmo,

    Hi, How are you all? I haven't been here a while. I have made a simple keygenme. There is 1 thing to do. 1. Make a keygen, level 1, I think. Here is a AV scan link, no threats. http://chk4me.com/check/public/4wM4pzG985B85a11PVET4 There can be serials fished, also some serials you wouldn't think off at first. Have fun and good luck. Keygenme in winrar, 15.2 KB: Unrarred file size: 36.5 KB Keygenme.rar

    • 14 replies
    • 7.1k views
  2. master131
    KeygenMe · Started by master131,

    This is my first keygen-me so good luck. Original Language: C# Difficulty: Beginner to Intermediate Obfuscated: Yes (SmartAssembly) Self-Keygen/IL-Patching: No Not sure if the algo I wrote is used in real software but it works and creating a keygen for it shouldn't be too difficult. Keygen Me.rar

      • Like
    • 10 replies
    • 7.1k views
  3. mrexodia
    KeygenMe · Started by mrexodia,

    Hey guys, A friend of mine wanted to learn some keygenning, so I crafted this small challenge for him, hope you guys will enjoy it too. Probably level 2, depending on your skill. Attached Greetings, Mr. eXoDia Keygenme.rar

      • Like
    • 11 replies
    • 8.5k views
  4. Smoke

    This is my first ever CrackMe Packed: Enigma and more.. Hoping its not too easy Enjoy Unpackme_CrackMe.zip

      • Like
    • 1 reply
    • 10.8k views
  5. elnaz
    UnPackMe (.NET) · Started by elnaz,

    hello test t and answer :-p unapck just .net :-p coded app :-p have 2 version unpcked 2 file :-p and write your soluton how unpack this :-p elnaz.zip

      • Like
    • 5 replies
    • 6.6k views
  6. DMichael
    KeygenMe · Started by DMichael,

    * i find bugin keygenme * please donwload again thx. Rules: 1.keygen or valid user and serial btw: 1.i set the buffers small so if you try to enter more chars than it can get the keygenme will be crashed(find out how max you can enter) 2.there no bad message(so if you enter bad serial it will close it self) 3.for who slove the first one there no big changes but if you take in sloving this too big respect from me 4.thanks to dreamer that help me find the bug that caused crash on some pc's have fun FixedSecondKeyGenMe.rar

      • Like
    • 3 replies
    • 6k views
  7. DMichael
    KeygenMe · Started by DMichael,

    rules: 1.keygen 2.and if you can make atut have fun:D btw: 1.i set the buffers small so if you try to enter more chars than it can get the crackme will be crashed(find out how max you can enter) 2.there no bad message(so if you enter bad serial it will close it self) CrackMe.rar

      • Like
    • 4 replies
    • 5.4k views
  8. morfej
    UnPackMe · Started by morfej,

    WinLicense - Professional Software Protection and Licensing Management [Version 2.1.3.32] Protection Options for Software: WL-TM.2.1.3.32 --------------------------------------- Macros Information ------------------ VM Macros: 0 CodeReplace Macros: 0 ENCRYPT Macros: 0 CLEAR Macros: 0 MUTATE Macros: 0 STR_ENCRYPT Macros: 0 RegisteredVM Macros: 0 CHECK_PROTECTION Macros: 0 CHECK_CODE_INTEGRITY Macros: 0 CHECK_REGISTRATION Macros: 0 CHECK_VIRTUAL_PC Macros: 0 Protection Options ------------------ Anti-Debugger: ADVANCE Anti-Dumpers: ENABLED Entry Point Obfuscation: ENABLED Resource Encryption: ENABLED VMWare compati…

  9. C0M3ND4D0R
    KeygenMe · Started by C0M3ND4D0R,

    Name : KeygenMe#11 Language : Autoit Level: ????? Packer: Not Obfuscation: Yes Rules: Keygen Not Patching Not Serial Fishing Not Self-Keygen Hug KeygenMe#11.rar

      • Like
    • 6 replies
    • 5.6k views
  10. Greedy_Fly
    KeygenMe · Started by Greedy_Fly,

    Hi... All !!! ... Try my regular KeygenMe!!! Rules: Only Keygen + (If possible, write a tutorial...) Level - ? (Tell me if you know...) KeygenMe.zip ------------------------------------------- Greedy_Fly

      • Like
    • 5 replies
    • 5.6k views
  11. Asian Dragon
    UnPackMe · Started by Asian Dragon,

    UnpackMe VMprotect Ultimate v2.12.3 crackme.vmp.rar

      • Like
    • 14 replies
    • 12.8k views
  12. 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
  13. Ownage
    CrackMe · Started by Ownage,

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

    • 0 replies
    • 5.3k views
  14. 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
    • 6k views
  15. 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
  16. 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
    • 12.6k views
  17. 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
    • 21.5k views
    Anonymous At4re Nayarit
    Anonymous At4re Nayarit
  18. 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
  19. 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
    • 6.3k views
  20. 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
    • 9.2k views
  21. 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
    • 6.3k views
  22. 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
    • 14.8k views
  23. 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
    • 8.5k views
  24. 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
    • 6.3k views
  25. _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
    • 12.1k views

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.