Challenge of Reverse Engineering

PC-Guard 5.0 UnpackMe Calc.rar

http://crackmes.de/users/the_binary_auditor/the_binary_auditor_splish_1/ There are solutions but none of them really explained how they mathematically did it. It is suppose to satisfy the following condition: serial=username+10*7 But why? Can someone explain it in more detail using the hashes formulas? Sorry for being nub Also, why is 7 used? I am doing a level 1 or 2 keygen on crackmes.de that has already been solved. However, I do not want to look at the solution because I will be cheating myself and I would not have learned anything. Here is what the keygen basically does: Create hash of username: int v = 0; do { v = ( i ^ username[i] % 10 ) + 2; if( (_BYTE)v &g…

Now I am enough to solve it... Thanks all tsrh.team.trial.keygenme.1.zip

Hi all this is my 3. KeygenMe I will a Keygen No Criypto and not Packed. coded in RadASM If your intelligence is good ! Simple for Serial find ! If you follow if is little difficult ! I Lock to Your ! (Sorry Bad English !) Download KeygenMe 3 by s3rh47.zip

Themida v2.0.3.0 - UnpackMe Protection Level = V.HARD I give u Protection Details for making ur unpack easy ==Protection Options== Anti-Debugger Detection = Ultra Advanced API-Wrapping = Level2 Anti Dumpers = Enable Anti- Patching = File Patch (Sign Support) Entry Point Obfuscation = Enable Metamorph Security = Enable Resource Encryption = Enable Memory Guard = Enable VMWare/Virtual PC = Compatible Compression = App/Res/Secure Monitor Blockers = File Monitors/Registry Monitors Delphi/BCB Form = Enable When Debugger Found = Exit Silently Code Replace = Enable ==Advanced Option== Encrypt App = Enable .NET ASM = Enable Hide from PE = Type2 When U DID I…

Not an easy crackme, the code is made of the 5-year-old-part, 2-year-old-part and a recently-added-part, i hope you'll like it. The best solution would be the name/key pair, but i can set no restrictions, as it is in real life. (Simply redirecting the wrong key proc to the right key proc is like writing your own code, so it is disallowed:)) And, this one wants a lot of your resources, so you better don't try to solve it while running something else /*I guess, that with everything closed it must be ok everywhere - it worked correct even on the old 633Mhz Celeron. Algorithm can be understood anyway*/ So, as it is said, close all other programs and crack it! Good luck…

Find the password for the user admin .Have fun. Crackme1t1.rar

Hi! I just stumbled on forum =) Try to keygen/crack the attachment. This shoudln't be a hard task for you. develop keygen -> medium just cracking -> easy keygenme_jensma.zip />http://jensma.de/keygenme_jensma.exe Mirror: />http://www.npshare.de/files/c6c5db88/keygenme_jensma.exe Have fun =)

Lets see who can crack it :-) Download: http://www.mediafire.com/download.php?wivddjmnnzn tip: Protected with {SmartAssembly} Regards KaL Crackme.rar

Hi guys, This is a device driver compiled for 32 bit systems and incorporates virtualized instructions, encrypted strings, and every other common protection routine provided by VMProtect 2. The unpacked driver must be fully loadable and viewable with tools such as IDA. This is not your run of the mill unpack, and if you require more information just post here. I had to upload to my box.net account, hope this is ok; />http://www.box.net/shared/x17h8v0nzv

welcome my friend! test it! TTProtect .rar

Enigma Protector 1.91 update again! Welcome to test! test1.rar test2.rar test3.rar

Hello Dear Masters Here we have a new version of hefaz protector with a little more security. In the UnpackMe we have .... 1.Advanced Nanomits 2.Code Redirection 3.Ultra AntiDebug 4.Better Speed ; than version 1.8.0 5.Fixed Crashes problem ( have seen in 1.8 UnpackMe ). 6.There is no additional protectors like VMProtector or ... Please Unpack it and write a tut. Download it from here.... http://www.4shared.com/file/2pwKhbEm/UnpackMe.html Best Regards. Thanks.

Hello all masters. Here we have an unpackme file that was protected with Hefaz Protector 1.8.0 ( Hefaz is a persian Protector ) , I have enabled all standard option to protect test file with std option ( no more difficulty ), please try to unpack it. Thanks. Best Regards. Note:The main application was protected with VMProtect.

Download & Extract Run it using java java.exe keygenme Try keygenning this if you can. I'll give source later keygenme.rar

Hello, so today I have created & protected a new UnpackMe for you. I added also some detect stuff [easy level]. So it should run normal with [mouse double click] and also in a normal basic protected Olly. Have fun. greetz ENIGMA 2.05 UnpackMe.rar

Dunno if anyone's seen anything like this before. If I share a serial though, it'll mostly spoil the fun, so have at it. I think this one will take a little detective work. EDIT: I might want to attach it...

You should find out the correct UserName and the RegCode.It's Very Easy for you .And It need .Net runtime SuperSerialMe.rar

Hey all, This is my first and probably my only KeygenMe. I wrote for a friend who's into VB apps (I haven't written VB6 in years). It's an easy algo, I just tried to eliminate sting searches and compares to show there are others ways to get to the routine. For anyone who keygens VB apps this should be pretty simple. It's not protected & compiled in native code. Have fun. Let me know what ya think of it KeygenMe#1.rar

hi,this is Zprotect 1.4.9.0 With key protection I put the project into the documents and registration documents to the unpackme file http://filebeam.com/aff2978f8e698239cbc57af512c42d60 Zprotect__1.4.9.0.rar

hi my friends it's an advanced KeygenMe that written in Adoube director. Try it. Download: />http://hashem20.persiangig.com/Learn/KeygenMe.rar

Hi please unpack it and write tut if it is possible ver :4.2 demo app:vb.net requirement: dotnet framework size:65 kb protection: almost all option thank you UnPackMe_Reactor4.2.rar

After some coding for my team, I got an idea abt a type of protection. I did my best to implement it in here. Its not very hard, but you must understand the math involved in it Best OF LUCK Regards KKR Download the challange from attachment : TERMiNATOR.rar .:Solved By :. 1) Saduff

Hey guys, This is too simple, so plz just make keygen... don't post any serial ! Cheerz KGM5.rar

Rules : No patching. : No Bruting. Keygen is the only soln. This will be a tough nut to crack. Download VoLtAgE_KGM.rar />http://www.multiupload.com/GKJX1MO8AZ If ya r not a crypto geek, dont even bother.