Challenge of Reverse Engineering

Simple KeygenMe 02 Provide a valid serial and User ID or make a keygen. Good Luck. File Information Submitter johnfkingzton Submitted 03/11/2021 Category KeygenMe View File

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johnfkingzton

March 16, 20214 yr

Difficulty : 5 (I think) Not sure Language : C# Platform : Windows x32 OS Version : Windows All Packer / Protector : PC-RET protection v1.1 Bronze :just unpack it. Silver: unpack + password of programm Gold: unpack + password + tutorial VirusTotal: https://www.virustotal.com/ru/file/2d0cbe8416c8bc72d73945eecc16cf754488e7a07d26926330e8f59f14afd8ca/analysis/1546348036/ Unpackme.exe

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• 5 replies
• 11.3k views
• 1 follower

BlackHat

March 15, 20214 yr

Pyarmor CrackMe Try to find the key. Hint, the key contains: Specials Caps Non caps Numbers Enter the key and you will see the results. Good luck. File Information Submitter lopeg Submitted 09/12/2020 Category CrackMe View File

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• 4 replies
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onze

February 18, 20214 yr

Tricky Goals: Bronze - Patch the crackme to show the correct message Silver - Bronze + explain what is happening I don't know why Windows Defender is giving a false positive. My past here should prove I am not here to harm anyone. I only used Appfuscator for renaming. I checked the file and I did not see any other obfuscation or anything annoying automatically inserted by Appfuscator (like outline method calls). Please extract all the files in a folder to make the exe work properly. Let's fight! File Information Submitter LoLLo90 Submitted 02/13/2021 Category …

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LoLLo90

February 13, 20214 yr

Language : C# Platform : Windows Build : x86-x64 Packer/Obfuscator : SafeVM Description : Anti-VM (Removed). I want to see how strong the protection is. Screenshot : UnpackME-OUT.rar

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• 3 replies
• 18.5k views
• 1 follower

Leopar36

February 11, 20214 yr

ClumsyVM This is my clumsy virtual machine 😃 Goals: Bronze - Patch the crackme to show the correct message Silver - Bronze + explain how the virtualized code works Gold - Silver + write a totally different virtualized code to pass the check File Information Submitter LoLLo90 Submitted 01/31/2021 Category CrackMe View File

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• 6 replies
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• 1 follower

Rhotav

February 10, 20214 yr

godpow#7468 CrackMe This has an anti-debugger which will constantly look for strings that'll contain the name of debuggers such as De4dot and more.. File Information Submitter henlo Submitted 12/07/2020 Category CrackMe View File

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• 1 reply
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Washi

January 22, 20215 yr

GOOD LUCK **this tool no have much protection** How to unpack by Inwza007: 1. use ManagedJiterFr4 jit UnpackMe and CrackMe.exe and ____.netmodule 2. use confuser Methods Decryptor 1.0 3. use Module to Assembly 4.use Universal Fixer 1.0 5. Clean String with SAE 5. UnpackMe and CrackMe.rar

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• 16 replies
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Floodedlegitbro

December 28, 20205 yr

Olivia Mini Protector Try to unpack it ... Protections used: String Encryption Anti Dn-Spy Anti De4dot More Features File Information Submitter KamiKaze Submitted 12/04/2020 Category UnPackMe (.NET) View File

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KamiKaze

December 6, 20205 yr

DotNetSafer This file is packed with DotNetSafer using the following protections; Constants Protection Mutation Protection ILDasm Protection Invalid Metadata Protection Invalid Cctor Protection Name Protection Goal : Unpack the file and detail the methods you used to bypass the above protection options. File Information Submitter Prab Submitted 05/15/2020 Category UnPackMe (.NET) View File

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0x59

November 7, 20205 yr

ConfusedDragon This is a .NET file which has been protected by an obfuscator me and a friend developed. It contains a lot of protection methods, common DNSpy/De4Dot tools will not help. DNSpy will fail to decompile and throw errors. Good luck. File Information Submitter emlin Submitted 07/15/2020 Category UnPackMe (.NET) View File

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0x59

November 7, 20205 yr

People who patch this instead of trying to find the key are boring :^) Language : C++ Platform : Windows x64 OS Version : Windows 10 Packer / Protector : None Description : This is a simple crackme i made over the course of the last 30 minutes. Hopefully you get a little fun out of it. Screenshot : crackme.exe

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• 7 replies
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DrayNeur

November 3, 20205 yr

Difficulty : 6 Language : C++ Platform : Windows OS Version : Windows 7 Packer / Protector :VMProtect Ultimate 3.0.8 Description : Memory Protection -Yes Import protection -Yes Resource Protection -Yes Pack the output File -Yes Debugger - user-mode+Kernel-mode Virtualization Tools -Yes using VMProtect SDK. Screenshot : UnpackMe.7z

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• 12 replies
• 28.8k views
• 2 followers

ktsky

October 22, 20205 yr

Difficulty : idk Language : .NET Platform : Windows x64 OS Version : All Packer / Protector : ConfuserEx 1.0.0 Description : Give the unpacked file + tutorial how to unpack it. [!] The file should be runnable after unpacking it [!] Screenshot : Spoiler UnPackMe01.zip

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• 14 replies
• 30.3k views

kryp

September 23, 20205 yr

Difficulty: 3-5 Language : .NET Platform: Windows OS Version: All Packer / Protector : ConfuserEx Fork Description : Pretty heavily forked ConfuserEx and I'm not sure if it's good or not. If you get it cracked please post how you did it and don't just say "I used public tools", tell what tools and how. Thank you! Screenshot : Download : CrackMe.exe

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• 4 replies
• 21.1k views
• 1 follower

Kronos

September 6, 20205 yr

Poetic AutoIt (string/integer obfuscation) This is a simple CrackMe consisting of an input. The correct input is two stanzas of a particular poem and will reveal a label of the poem title and author upon success. Otherwise, "Try again..." will be displayed. If I'm allowed to be picky, I'm primarily interested in scripted efforts to RegEx analyze strings/integers. Very little effort (as in none) went into hiding the correct string. The script was merely passed-through a self-made obfuscator. Full disclosure: It contains rudimentary debugger and compilation checks which, if failed, falls into a while loop with a one second sleep (harmless). But, as stated abov…

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• 3 replies
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kao

August 14, 20205 yr

A Crackme with Math Problem Just run it. It is an interesting math problem. No vm, no obfuscation. You can debug it with dnSpy even Visual Studio. You should use public method inside this crackme to generate a valid hex string and make program output correct string. File Information Submitter wwh1004 Submitted 08/07/2020 Category CrackMe View File

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Washi

August 12, 20205 yr

CrackMeBoi I made a custom obfuscator and I haven't made any progress cracking it so please crack the file with my custom .NET obfuscator. Do not use OllyDbg or any software of that kind, you can use Mega Dumper and other tools similar. File Information Submitter Ninjego1 Submitted 06/03/2020 Category CrackMe View File

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Washi

July 2, 20205 yr

Language : Python Platform : Windows OS Version : All Packer / Protector : My Protector (https://github.com/robert169/Python-Obfuscator) Description : Want to see how long it takes to get it unpacked, is easy tho but i want to know where can i improve it Spoiler Screenshot : Download : Protected.py

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BambooQJ

July 1, 20205 yr

CrackMe 4 This file is protected by my custom C++ virtualizer and C# protector. The correct solution is to find the correct key and unpacked target. Enjoy it! File Information Submitter 0X7C9 Submitted 07/01/2020 Category CrackMe View File

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0X7C9

July 1, 20205 yr

Difficulty : 4 Language : .NET Platform : Windows OS Version : All Packer / Protector : ConfuserEx Modded Description : Hi , one guy is selling his protector (confuserex modded) and it is really expensive. I want to know if someone can unpack that because I don't trust him and his paid protector =/ Thanks in advanced Good Luck! Screenshot : UNpackme.exe

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• 11 replies
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illuZion

June 17, 20205 yr

Language : C# .Net Platform : Windows x32/x64 OS Version : All Packer / Protector : DNGuard HVM 3.94 Description : Hi everyone,two solutions are accepted : 1. GOLD MEDAL = UNPACKING THE PROTECTOR 2. SILVER MEDAL = PATCHING THE TOOL Hope you will have some fun! *DO NOT PATCH THE CrackMe,THE GOAL IS TO PATCH THE .DLL PROTECTED WITH DNGUARD HVM OR UNPACK IT!* Can't upload larger file "Max total size 0.98MB" so i'll just put it on the link : https://anonfile.com/B9aae3P7n9/CrackMe_rar CrackMe.rar

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• 5 replies
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AzoresRCE

June 16, 20205 yr

Language : .NET Platform : Windows [x32/x64] OS Version : Windows 10 Packer / Protector : Habib Extreme Protector / .NET Reactor Description : Habib is my good friend. I want to know how strong is it ? If you can, write how you unpacked it. Virustotal link. Screenshot : Download : Habib.rar

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• 8 replies
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Prab

June 15, 20205 yr

Beds Protector v6.9 Try to unpack this file protected using Beds Protector v6.9 and then crack it. A little spoiler for some of you: Spoiler All of these are fake attributes but you probably already know that! File Information Submitter wowinr Submitted 06/06/2020 Category UnPackMe (.NET) View File

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• 1 reply
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CreateAndInject

June 7, 20205 yr

Language : C++ Platform : Windows OS Version : Windows 7,8,8.1,10 Packer / Protector : Mixed VM & Packers, RSA, RC4 Description : Enter correct key and you willl see the flag, and this is result. Post flag to spoiler with wirite up how you decoded it. CrackMe.exe

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FormatC

June 6, 20205 yr