Challenge of Reverse Engineering

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Packed: VMProtect 2.x http://www.mediafire.com/?g97n6es3rc36452

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

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

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

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

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

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

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

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

Her is are littel unpackme/enableme from me. I hope its fun for any how solve this. Level = ?? //what your thing If your unpack it can you say what tools your used to unpack it. unpackme.7z