Challenge of Reverse Engineering

View File Example CrackMe - Debug Blocker x64 This is an example for submitting a CrackMe in the Downloads section of the site. You can download the file and run Debug Blocker x64. Nothing too exciting will happen! The challenge here would be to patch the debug-blocker function so that it does not spawn a second process. Submitter Teddy Rogers Submitted 02/23/2020 Category CrackMe

View File Nuitka 2.1.5 (Python 3.11) Hi Nuitka compiled python 3.11 file Correct password doesn't important Just patching Thanks Submitter Sh4DoVV Submitted 04/18/2024 Category CrackMe  

View File Python Crackme (Custom VM) Hello, this is a crackme made in python by a friends (wrc3667 on discord) Difficulty: [95 / 100] The purpose of this challenge is to find the correct key (note: the key should be in hexadecimal, otherwise the program will istantly close) Features: - Constant encryption - Name encryption - Opcode shuffling - Bytecode encryption - Stack encryption - Bytecode instruction mangling - Guillotine Interpreter - Complete namespace virtualization Submitter 0verp0wer Submitted …

View File VMProtectDDK v3.84 x64 No.2 2024 If you want to try this challenge, please read the following text descriptions: 1. Please try to debug the kernel driver in the virtual machine instead of your real machine to avoid causing a blue screen on the physical machine a. Why blue screen? For things like Ring0.sys, as I mentioned earlier b. Copy the Tuts4you.ini file to the C:\Windows\ directory of the virtual machine 2. I have added a test signature to the driver, so to load this driver, you need to enable Windows test mode a. Press and hold the "WIN+R" key to launch the CMD console as an administrator, enter b…

This is an Enigma Protector_7.5 shell sample, whether it is Unpack, PatchHWID, or KeyGen, as long as it can successfully bypass registration, it is sufficient. Welcome friends to test, Using hardware ID encryption without popping up a registration box when changing computers, I think this one machine, one code solution is very challenging，I don't check anti virtual machine, but it cannot run on a virtual machine, which I find somewhat unbelievable..thank you. Insufficient forum member permissions, unable to post to the reverse challenge area. Sorry Name: tuts4you HWID: C16BF-8E2CA-FF15D-2CE16 KEY: BA23FLLESM75MTHXKU3Z8JNA3VJWLKCSZWV3PS76NAMJK5D3MRQ5ZYJ5ZPE9EKA…

View File PatchMe No.1 2024 (x86 32-Bit) PatchMe.exe MD5: DD4E072F8B5CA241927EAA63DED47383 SHA1: 08F4699C3A84F5E40343CE9A9AD05046EE15D6DD CRC32: 9A4C0721 PatchMe No.1 2024 Please check the ReadMe.mp4 in the zip package, you'll understand what I mean... If you have solved this challenge, please make tutorial(s)... I will mark the answers with tutorials as a solution. About This Challenge... - Author: boot - Date: February 10, 2024 - Difficulty: ★★☆☆☆ - Architecture: x86 32-Bit - From: Tuts4you - Platform: >=Win95 Submitter boot …

View File CrackMe [.NET + Native] A little "CrackMe" challenge (.NET + Native). Need to crack the application so that it does not require a license for its operation. P. S. Application requires .NET 6 to run Submitter InvizCustos Submitted 01/28/2024 Category CrackMe  

View File TinyCrackMe - WinLicense 3.1.7.0 Edition === SPOILER INSIDE SOURCE CODE TAB === A WinLicense'd version of TinyCrackMe Rules: 1. Unpack first 2. Do whatever you want after unpack, as long as ":3" MessageBox appear :3 Just want to see how long ppl will crack the latest version of WinLicense... WL Protection: - Anti-Debugger - Advanced API-Warping - Compress And Encrypt (all 3 options) - Full Encrypt Strings - Detect File/Registry Monitor - Entry Point Virt - Anti File Patching - Perform Protection Check - VMware/Virtual PC Allowed WLVM: - SHARK32 (Black, Red) - PUMA32 (Black, Red) - EAG…

View File NanoButton A follow up of TinyCrackMe Challenge: - Press the button "Hi" - If correctly bypass, a MessageBox with `:3` show up. Rules: 1. Patch? Here's a deal: - No patching if you're unpacked UPX, as final result! - Allowed patching if you're not unpacked UPX, as final result! - only patch-fix the flaw like missing stdc dll, or temporary byte patch to making loader or hook 2. Spoiling? Yes! (originally in crackmes.one is "no") 3. Keygen? useless. Because the goal is bypass it! 4. Hooking? Allowed! It's not a patch! 5. Loader? Allowed! It's just a mem patch, not file patch... 6. Any these above, do …

View File Simple Calculator (Enigma 7.40 + ILProtector 2.0.22.14) This is a simple calculator.exe. Protected with ILProtector 2.0.22.14 and double layer Enigma 7.40. First layer on DLL, second layer on EXE and added DLL in Enigma Virtualbox. For skilled reversers this will not be a problem unpack this. Submitter azufo Submitted 01/10/2024 Category UnPackMe (.NET)  

View File VirtualGuard v1.0 This file is protected by the first version of VirtualGuard. VirtualGuard is an obfuscator I develop that I am trying to receive some stress testing on I hope this VM makes people think at least a little bit; It's fairly close to 1:1, however I do believe I do some interesting things with comparisons and branching. Haven't seen it anywhere else. Let the record state this is not a "mod" of any other vm, so if you are interested in seeing some new stuff this is for you. This sample contains some fairly simple branch offset mutations, at first glance it may be a slight "wtf moment" (at least I hope), but …

View File Safengine Licensor v2.3.4 过程式编程语言，所以IAT和资源很少 Safengine License 2.3.4 with medium protection options enabled. Program is written in assembly language so there are very few IAT and resources. Submitter kuazi GA Submitted 11/13/2023 Category UnPackMe  

View File AgileNET v6.6.0.4.2 AgileNET (code virtualization on 1 method only, no other protector features used) Submitter whoknows Submitted 11/12/2023 Category UnPackMe (.NET)  

View File NETBuilderInjection + VMP I took my NETBuilderInjection and turned it into a Protector, but I don't know how secure it is. (For me, it's safe enough.) So I made this little program, The objectives are: [Unpackme] You should unpack it and get the cleanest code possible. [Crackme] In the textbox where the HWID is displayed you must modify the text and write something else in it. [Bypass] You will need to disable "Falcon Anticheat" from the executable. ---------------------------------------------------------------------------- Difficulty : Unknown Language Base : .NET Platform : Windows - .NET Framework 4…

View File CrackMe with Anti Patch The program uses VMP protection, and calls the relevant checksum SDK, even if the violent crack may also be slightly more complex, here provides a baymax patch tool to achieve the crack program, interested friends can read the pdf tutorial. The function of the program to determine whether the input is correct or not does not use the SDK for protection, and verify the error dialog box strings are searchable, but these do not mean that it is easy to crack, because the code also calls the memory checksum, determine whether the debugging and other SDK interfaces. So how to realize the cracking of this crac…

View File Enigma Protector x64 v7.40 (Demo Version | All Protection Options) Unpackme x64 - Enigma Protector 7.40 (Demo Version | All Protection Options) Enigma x64 + SDK +HWID Lock + etc... https://forum.tuts4you.com/ If you unpack it, please make tutorial(s)... I will mark the answers with tutorials as a solution. The compressed package includes a simple MP4 display, please pay attention to check... Created by boot / From Tuts4you 2023.08.21 Submitter boot Submitted 08/22/2023 …

View File WinLicense v3.1.3.0 x64 (Bypass Without Unpacking) License User Details User Name=2days Tuts4you Company=The Terminator Hardware ID=6FF7-E7EF-5988-20FE-144E-865D-2D30-A73B Custom Data=<custom_start>Skynet, a global network of artificial intelligence machines.<custom_end> License Restrictions Days Expiration=365 Date Expiration=2029/12/12 Executions=999 Runtime execution=999 Global Time=999 Install Before Date=2029/01/01 Miscellaneous Unicode License=yes Generated License (FILE KEY) License Format=Binary License Data= <license_start> ghO1ud4wf14YNU87wUptZ1J…

View File VMProtect x86 v3.81 (Default Protection Options) Please debug/unpack in the virtual machine This target is protected by a specially modified version of VMP, with some simple protection measures added It only supports running on x64 operating systems, such as Win7 x64 or Win10 x64, which may also support most Win11 x64 If you unpack it, please make tutorial(s)... I will mark the answers with tutorial(s) as solution. Submitter boot Submitted 07/27/2023 Category UnPac…

View File Bypass MessageBox Without Unpacking Bypass MessageBox without unpacking, task complete. Submitter 2days Submitted 07/15/2023 Category CrackMe  

View File .NET Reactor v6.9 File packed with .NetReactor 6.9 -- All options Submitter AarJee Submitted 07/19/2023 Category UnPackMe (.NET)  

View File VMProtect x64 v3.6 HWID Lock (All Protection Options) Unpackme x64 - VMProtect 3.6 HWID License (All Protection Options) VMP x64 SDK + HWID Lock +etc... WwW.Tuts4you.CoM https://forum.tuts4you.com/ If you can unpack it, please make a tutorial... I will mark the answers with tutorials as a solution. The compressed package includes a simple MP4 display, please pay attention to check... Created by boot / From Tuts4you 2023.06.21 Submitter boot Submitted 06/21/2023 Category …

View File Armadillo x64 v9.64 (General/Default Protection Options) Unpackme - Armadillo x64 v9.64 | WwW.Tuts4You.CoM General/Default Protection Options = HWID Lock + etc... If you can unpack it, please make a tutorial... The compressed package includes a simple MP4 display, please pay attention to check... HWID:87DF-0E78 NAME:boot KEY:000016-M9KY7Y-1PM436-8JKH7H-G8QXCH-3ACEGN-Y5ND6B-TY4VJ2-5FX1WY-WGJBFB After seeing the dynamic screen, please click the LEFT MOUSE button to exit OR press the "ESC" button once to exit. Created by boot / From Tuts4you 2023.06.19 Submitter …

View File Fatmike's Crackme #4 ..::[FaTmiKE 2o23]::.. After a little break i decided to program another little crackme (This is my 4th crackme). Here are the rules: 1. The main goal is to unpack this crackme or write a loader. 2. If you like, find a valid serial or write a keygen. The crackme was tested on windows 10. Have fun! Submitter Fatmike Submitted 06/08/2023 Category UnPackMe  

View File Obsidium v1.69b1 x86 (All Protection Options) Obsidium v1.6.9.b1 x86 = All Protection Options = HWID lock + etc. This unpackme (VB6.0) is created by me. If you can unpack it, please make a tutorial... 2023.06.07 Submitter boot Submitted 06/07/2023 Category UnPackMe  

View File Python Obfuscated KeygenMe I have provided a zip archive which contains two .py files, as seen in the screenshot. In LicenseChecker.py there is a validation function invoked by main.py where you put the key in the given format. The python code is obfuscated using a obfuscator I'm currently working on. If you solved the challenge, or have any feedback to give, or need hints/help with reversing without spoiling, please let me know. Thanks. You can see original source code and the solution in the 'Authors Code' and 'Authors Solution', if you wish. Good luck! Submitter …