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https://github.com/petschko/java-rpg-maker-mv-decrypter

You can decrypt whole RPG-Maker MV Directories with this Program, it also has a GUI.
https://github.com/petschko/java-rpg-maker-mv-decrypter

decrypt-files decrypting-files decryption gui jar java java-8 java-decrypter mv personal-project rpg-maker rpg-maker-decrypt rpg-maker-mv rpgmvm rpgmvm-file rpgmvo rpgmvo-file rpgmvp rpgmvp-file

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You can decrypt whole RPG-Maker MV Directories with this Program, it also has a GUI.

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README 

        
# IMPORTANT: Project MOVED to [Gitlab.com](https://gitlab.com/Petschko/Java-RPG-Maker-MV-Decrypter)



Please look there for updates/Bug-Reports - This Github Repo will be Read-Only by now



https://gitlab.com/Petschko/Java-RPG-Maker-MV-Decrypter



----



# Petschko's RPG-Maker-MV/MZ File-Decrypter (Java-Version)



## What's that?

This Project is used to decrypt RPG-Maker-MV/MZ-Resource-Files that are encrypted with the Build-In-Encryption of the RPG-Maker.



This Project is also able to decrypt whole RPG-Directories. It's similar to [my previous Project](https://gitlab.com/Petschko/RPG-Maker-MV-Decrypter) but more comfortable.



### Which Files can be decrypted with this Program?

You can decrypt the Build-In-Encrypted Files from the RPG Maker MV or MZ. They usually have the extension `.rpgmvp`, `.rpgmvm`, `.rpgmvo`, `.png_`, `.m4a_` or `.ogg_`.



## Requirements

- Java 8 or higher

- Any OS (Linux, Windows, IOS etc)



## Installation

- [Download this ZIP (!!Alpha!!) - Version: 0.4.2](https://petschko.org/upload/projects/java-rpg-maker-decrypter/RPG_Maker_MV_Decrypter_jar_0.4.2.zip) or Clone/Download the Project and make yourself a JAR-File

- Put it where ever you want (Don't forget to extract, if you downloaded the ZIP xP)



### Dependencies (Only needed when creating yourself a JAR)

- [org.json](https://github.com/douglascrockford/JSON-java)



## How to use

### (Normal) With Graphical interface

- Just double-click on the JAR then the Program should start *(If not try the BAT-File - Windows only)*

- Click on the Menu "File" then "Open"

  - Browse to the RPG-Maker MV Project which you want decrypt

  - Select the Main-Directory of the Project (The Folder where the Game.exe is) on click on "Choose Directory"

    - You can also put the Program right into your Game-Directory and select the option "Select Project from current Directory"

- Wait for a short moment =)

- If there are Files listed and a Decryption-Key is in the Text-Box you're ready to Decrypt

  - Then go into the Menu and click "Decrypt" -> "All Files"

  - After a short moment you're done =)

  - You can find the Files now within the "Output"-Directory, which is in the same Directory as this Program. *(If you not changed it already via "File" -> "Change Output-Directory...")*



- (Not yet implemented) You can also Decrypt single/multiple Files - Select them in the Project-Files Tab after that you go to "Decrypter" -> "Selected Files"

- You can also Re-Encrypt Files (For example if you translated text on images for the Game)

- You can also check out the "Option"-Menu and check if the settings fit to you =)

- (Not yet implemented) You can find this "Manual" also within the "Info"-Menu



### Run with CMD - For automation / the guys who like it :3



In some case it can be useful to do stuff via the commandline. For example, you want to mod a game and make it easy for the user to mod it (like they just need to start a .bat/.sh file which does the stuff)



- To see the global help (with all sub-commands) type in `java -jar "RPG Maker MV Decrypter.jar" help`

- To see the detailed help of a specific command type in `java -jar "RPG Maker MV Decrypter.jar" [command] help`

  - Example (display decrypt help): `java -jar "RPG Maker MV Decrypter.jar" decrypt help`



For details use and examples how to use it see [CMD Instructions](cmd-instructions.md)



## Motivation behind this

As Art-Creator for the RPG-Maker by myself, it is sometimes hard to figure out, if somebody is using Resources from you *(and may violate the licence like giving no credit or using a Non-Commercial-Resource in a Commercial Game for example)*.



I don't have time to play through all the games (even if I want^^). So I just quick look at the files, but it's only possible if the files are not encrypted...



Sad for me, more People use the build in Encryption from the RPG-Maker-MV, so that's why I wrote this Program - To get a quick look at the Files without playing the whole Game =) May some other Artists will find this useful too.



It can be also useful for Translators, e.g. when you want to make a Game available for different Regions. *(IMO you should ask the Creator of the Game first! - Sometimes it's not possible...)* 



I'm also interested in Encryption in general, so this was a good base to learn, since the MV-Encryption is very weak - But it's great that's simple, because it will not slow down weak machines! *(See below)*



### Why is the encryption of my Game useless in this case?

Sometimes there is a nice Picture that you may save for yourself. You would even do with without this Decrypter by making a Screenshot (or record the Sound) >.<



So you see there is no need for encryption in RPG-Maker Games... If someone wants to get the Files, he will be able to get them, this also happens to AAA Games.

You can't encrypt your Files 100%, because the Game has to decrypt them by itself, to display them... (Or Play) - And since you are able to play the Game offline, you have to provide the Decryption Method and the Key. 



### But somebody will steal my assets

Yeah, that may happen but as said before, you can't stop them anyway (Even without Decrypter). Even if you use a more powerful Encryption - it will just slow down your Game on weak Machines.

Everybody is allowed to save anything for (!)personal use **only**(!) - But you're **not allowed** to create a Game with them. Except it's a free Resource, then you have to follow the Licence of the Resource-Creator! 

So please DON'T steal stuff, as Artist I know how much time such stuff take, so DON'T do it! 



### Why as Java-Project? | Advantages

This Java-Decrypter is better for whole Directories or automated Scripts. It was easier to do it with Java, because you are very limited with JavaScript. (File-Access / Saving etc)

Why Java? - Because I know this Language xP - Feel free to port it to an other language, which may doesn't require the installation of a Run-Time-Environment...



**Advantages using this in comparison to my previous Project:**

- Works with whole Directories

  - It detects Encrypted Files by itself

  - It Auto-Saves & Rename Decrypted-Files for you!

  - It keeps the Directory-Structure

  - You can specify an Output-Directory

- It's able to Detect the Encryption File & Key by its own

- Less buggy and faster than my JavaScript Version, because I'm independent of Browsers and Charset-Problems...

- You can use Command-Line to if you want

  - You can, may use it for Modding? Idk I've heard that some do

- Will add a restore Project Function in the future

- You can en/disable the verification of the 16Byte Fake-Header

  - If you disable the verification, it will just cut away the Fake-Header aka the first 16 Bytes of the File *(Useful when Decrypter-Signature changes)*

  - If you enable the verification it will check if the Files-Header is correct (aka if it's a real Encrypted File)



## Be Fair!

You are **not allowed** to use the Decrypted Files (**if its not allowed by the origin Resource-Licence**).

Please **don't steal, reuse or share stuff in Public**! That's not the idea of this Program!



You can save them for **Personal-Use only**. If the origin Licence allow use you can use them of course, but please follow the Licences!



**If that's your Project** and you simply lost your Origin-Files, **you have the same rights**, to do stuff with them, **as before** =)



## Donate



If you like this Project and want to thank me may consider to [Donate](https://www.paypal.me/petschko). I appreciate anything, which helps the Project (Pull-Requests, Bug Report etc), these are more worth than Donations but I'm happy for every amount as well. ^.^



## Contact

- E-Mail me if you have questions (no bug reporting please): [email protected]

  - You can also tell me you like it or not >.< Of course you can make improvement suggestions if you want

- Please report Bugs here on gitlab.com use the "[Issue](https://gitlab.com/Petschko/Java-RPG-Maker-MV-Decrypter/-/issues)"-Section on this Project