Challenge of Reverse Engineering

Difficulty : Probably 8 Language : C# .NET Platform : Windows (anyCPU) OS Version : Windows 7 Above Packer / Protector : Ama's Protector Description : Upload the Unpacked file and Give me a detailed tutorial. like... tell me the specific method or specfic tools you used in order. as i said in the previous unpack challenges XD. you know the rest. Screenshot : testapp_enc.exe

• 0 replies
• 5.7k views

Cursedzx

November 16, 20186 yr

Difficulty : 4+ Language : Java Platform : Windows x32 OS Version : Windows 7 and up Packer / Protector : Excelsior JET Description : Good Luck Screenshot : Demo.7z

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• 5 replies
• 6.4k views

zodiac

November 10, 20186 yr

Difficulty : 4-5 Language : .NET Platform : .NET/Mono OS Version : All Packer / Protector : Custom Description : This is a virtualizer I wrote over the last few days, basing most its protection on simple virtualization obfuscation, as well as constant local shuffling in order to make debugging a bit harder. Proper anti-debugging isn't implemented, though, so that should make things a bit easier. Cracking : If you do crack this, please post in the thread (or DM me) about how you did it. It doesn't have to be step-by-step; a simple "after doing X all you need to do is Y" is fine. If you have any suggestions for additional obfuscat…

• 4 replies
• 6k views

DefCon42

October 17, 20186 yr

Difficulty : 5 Language : C# Platform : Windows OS Version : Windows 7 .8.1,10 Packer / Protector : agile.net (unknown) Description : unpacked Screenshot : agile.zip

• 0 replies
• 6k views

zodiac

October 17, 20186 yr

Difficulty : 2 Language : .NET Platform : tested on windows 10 OS Version : All Packer / Protector : Enigma and custom obfuscation (Without constant encryption) Description : So, the goal of this Keygen Me is to obviously create a keygen. Your keygen should create a "KEY" file which will contain data which will be checked by the application. The application takes the key file as input (Drag and drop). Provided with the application is a sample key file which contains a valid key. Create a keygen which will create other valid key files. Screenshot : CrackMe.rar

• 3 replies
• 9.3k views

xSilent

October 13, 20186 yr

Difficulty : Probably 7 Language : C# .NET Platform : Windows (anyCPU) OS Version : Windows 7 Above Packer / Protector : Atipls' obfuscator Description : Upload the unpacked file and give me a detailed tutorial. Describe me the specific method or the specific tools in order used. As I said in the previous unpack challenges XD. Screenshot : UnpackME.exe

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• 5 replies
• 9.6k views

#Sith

October 7, 20186 yr

Difficulty : 9 Language : .NET Platform : Windows OS Version : 7 and above Packer / Protector : just dynamic methods (custom solution) Description : I learned a lot while building my original dynamic methods crackme so I decided to take it up a notch and created a new version. This one works the same: it asks for a name and a serial code, and if the serial is valid for the given name, it displays an ID calculated from the name. The goals are to either make the program calculate the ID without checking the serial, or build a keygen that creates valid serials. One pair of name and serial is provided. I tried to make it impossible to dump the dynamic …

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• 10 replies
• 7k views
• 1 follower

blank

September 30, 20186 yr

Difficulty : 4 (I don't know) Language : C# .NET Platform : Windows OS Version : 7 and above Packer / Protector : Custom tool written from scratch and Obfuscar Description : Here is a project I've been working on for a few days. The protection algorithm is all written by myself (pretty basic though). I am basically a noob, so it might just be crap. However, I'd appreciate if someone could take a look at it, and provide some instructions on how to crack it. In the end, I ran the dlls through Obfuscar, for some simple renaming. The program takes two strings: a name, and a serial. Then it checks if the given serial is valid for the given name. If so…

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• 9 replies
• 6.7k views

blank

September 20, 20186 yr

Difficulty : 9 Language : .NET Platform : Windows OS Version : Windows 7, 8, 8.1,10 Packer / Protector : NET Encryptor - Infralution 2.1.6 Description : Tutorial how to unpack it. The file should be runnable after unpacking it de4dot does not recognize it Screenshot : Unpackme NET Encryptor - Infralution.zip

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• 4 replies
• 6.1k views

snoop

September 19, 20186 yr

x86 Virtualizer http://tuts4you.com/download.php?view.1850 Ted.

• 2 replies
• 8.3k views

Extreme Coders

September 8, 20187 yr

Difficulty : 2 Language : C/C++ Platform : Windows x32/x64 OS Version : Windows 7/8/10 Packer / Protector : None [just some algebraic manipulation] Description: get the key Screenshot Download justfun.exe

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• 2 replies
• 5k views

GautamGreat

August 20, 20187 yr

Difficulty : 9.5 <- for me Language : .NET Platform : Windows x32/x64 OS Version : Windows 7,8,8.1,10 Packer / Protector : Woopza Protection Description : Get the key (and make tutorial how to crack it / unpack it).. Screenshot : THIS CRACKME ISN'T MY (i found it somewhere) Download : WProtection.zip

• 2 replies
• 5.2k views

NeoNCoding

August 17, 20187 yr

Difficulty : 4 i think Language : C# .NET Platform : Windows (anyCPU) OS Version : Windows 7 Above Packer / Protector : Modded ConfuserEx v1.0.0 Description : Upload the Unpacked file and Give me a detailed tutorial. like... tell me the specific method or specfic tools you used in order. Screenshot : UnpackMe.exe

• 4 replies
• 9.9k views

Cursedzx

August 14, 20187 yr

Difficulty : 3+ Language : C++, java Platform : Android OS Version : 4.4 and up Packer / Protector : VMProtect 3.2 CPU : x86/x64 Description : Ultra combines virtualization and mutation methods. Good Luck Screenshot : KeyGenMe

• 0 replies
• 9.7k views

Modify

August 8, 20187 yr

Difficulty : 5 (I dont know, maybe) Language : .NET Platform : Windows OS Version : All Packer / Protector : Eazfuscator 2018.2 Description : Hello, here I am again with another take on Eazfuscator! I was wondering maybe Eazfuscator's vm is still useful? This time id tried to do the Keymaking algorithm a little more complex than last time 😅 ... One key is known, but can you find more? If you manage, post a proper keygen. Good luck! Screenshot : KeygenMe2.exe

• 0 replies
• 15.2k views

SaggingCoder

July 25, 20187 yr

Difficulty : 8/10 Language : C++ & C# (VS2008, .NET framework 2.0) OS Version : Maybe not working on Windows 7 Protection : Custom ConfuserEx, Crypto, VMprotect Description : Hi I am back, please try this challenge... Get key (33 chars) and user name, use all possible methods. Happy Reversing! Download : https://mega.nz/#!QqwwDICb!rI00waeJ7VFTDLhlnItuOhiZxd7eBoCXqN6KLDQJE_c (15Mb) Screenshot : CrackMe^v11_C.zip

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• 3 replies
• 6k views

0X7C9

July 15, 20187 yr

Difficulty : 3/10 Language : C# Platform : Windows OS Version : Windows 7,8,10 Packer / Protector : Confuserex 0.3 and some custom stuff Description : lit crackme Screenshot : Download : CrackMe.exe

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• 4 replies
• 7.6k views

r0mel

July 9, 20187 yr

Difficulty: 4 Language: C/C++ Platform: Windows x32/x64 OS Version: Windows XP+ Packer / Protector : UPX 3.91 Description : Generate key and post your result on forum. Screenshot : keygenme.zip

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• 3 replies
• 8.6k views

zero_gear

July 5, 20187 yr

Difficulty : 3+ Language : .NET Platform : Windows OS Version : Windows Packer / Protector : Enigma + Multiple Description : Provide unpack me + key Screenshot : Target : DotNet.7z

• 2 replies
• 8.7k views

Nichaen-

July 3, 20187 yr

Difficulty : 2-3 Language : C# Platform : Windows OS Version : All Packer / Protector : Custom protector Description : You need to unpack the file and attach the unpacked file and password to your message Screenshot : Virustotal: https://www.virustotal.com/#/file/4ec34e564ff07f6fd57005b71d8c9eca4fb18858f8a7c7352b62edaa427f9bdd/detection UnpackMe.rar

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• 7 replies
• 7.3k views

Nichaen-

July 3, 20187 yr

Virus Total https://www.virustotal.com/th/file/309fc2a1e4916f653eb1aa32a67f77132610907e76f340f7172aaec1c8fb2640/analysis/1445761054/ Unpackme.rar

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• 7 replies
• 11.5k views

Tanasittx

July 3, 20187 yr

Difficulty : 7-8 Language : C++ Platform : Windows x86 OS Version : XP and above Packer / Protector : VMProtect 3.0.9 Description : Not default VMP protection, just testing some thing. The main goal is - unpack sample, not key. Screenshot : unpack_me.rar

• 0 replies
• 7.6k views

flash_0

June 30, 20187 yr

Difficulty : 6 Language : C/C++ Platform : Windows 32bit OS Version : Windows XP+ (tested on win xp 32bit vm with sp3 and win 10 x64) Packer / Protector : None Description : Pretty straight forward keygenme, input a name, and a key and see if they're valid. The goal is to write a keygen for it without patching the file. Hopefully when thinking about this one you don't forget the code you can't see. But if that isn't going well you can always try brute force on it. Again there is 1 goal, write a keygen for it without patching it. Screenshot : Download : KeygenMe_01.zip

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• 9 replies
• 9.7k views

zero_gear

June 28, 20187 yr

Difficulty : 4-5 Language : .NET Visual Basic 2010 Platform : Windows OS Version : All Packer / Protector : THEMİDA latest version and default settings Description : Fully unpack the program and get the code I have hidden inside (Enter it in textbox and check it) Please provided details/a tutorial on how you managed to unpack it. Screenshot : Unpackme_fix.exe

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• 4 replies
• 8.1k views

er132

June 28, 20187 yr

Difficulty : 10Language : VB.NETPlatform : Windows x32 / x64OS Version : All net framework 4.5Layer of Protection : 4 Description: Try to found 2 key Screen : TeslaProtectedAppCrackMe.exe

• 6 replies
• 5.7k views

puff

June 27, 20187 yr