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Petschko / repository

RPG-Maker-MV-Decrypter

You can decrypt RPG-Maker-MV Resource Files with this project ~ If you don't wanna download it, you can use the Script on my HP:

#decrypt-files#decrypting-files#decryption#encryption-key#html#html5Archived

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IMPORTANT: Project MOVED to Gitlab.com

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

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

Petschko's RPG-Maker-MV & MZ File-Decrypter

What's that?

This Project is used to Decrypt (and Re-Encrypt) RPG-Maker-MV-Resource-Files (MZ-Files as well) and that are encrypted with the Build-In-Encryption of the RPG-Maker.

This Project is mostly used for Single-File decryption (But it is able to handle multiple files). >.< Please try out the Java-Decrypter if you want decrypt huge amounts of Files (or more Projects)

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 so i just quick look at the files but its 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 script - to get a quick look at the files without playing the whole game =) May some other artists will find this useful too.

Legal-Notification

You are not allowed to use the Decrypted Files (if its not allowed by the origin File-Licence). Please don't steal and reuse stuff that's not the idea of this Script! You can save them for Private-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 =)

Requirements

Web-Browser with HTML5 Support

Installation

This is very easy:

Download/Clone the Project OR direct use it on my site
Extract/Put it where ever you want
Done :)

How to use?

If you downloaded this Script on your Computer (Pre Step)

You have to open the "index.html" file with you Browser like:

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You need to check if you have one of these File-Types to turn back into the Game:
- PNG-File (.png) - Image-Format make sure that's PNG not JPG or something different
- m4a-File (.m4a) - Sound Format
- ogg-File (.ogg) - Sound and/or Video Format
If you have the Files in these Format you can go on, else turn them into the correct Format. (You should know how or how to Google)
Get the Encryption-Key (This step isn't needed for Images - Look at Image "Decryption" without the Key)
- Select with the first File-Picker the "System.json"-File OR any .rpgmvp/.png_ File from that Project
  - The File is located in %PROJECT_DIRECTORY%/www/data/System(.json) for RPG-Maker MV
  - The File is located in %PROJECT_DIRECTORY%/data/System(.json) for RPG-Maker MZ
  - You can also use an Encrypted Image-File from the Project (.rpgmvp / .png_) to detect the Key
- Click on the Detect-Button - If it finds the Key, it will automatically insert it for you within the next Input-Field
- You can also manually put the encryption-Key in the Text-Field if you know it.
Make sure that Verify Fake-Header? is enabled (on YES). If not select it.
- This checks if the Game can read this File
Select the File(s) you want Encrypt
Click on the (Re)-Encrypt-Button (Of the RPG-Maker which is used)
- IF you get an Error please check if you did all steps right before! Also check if the Header-Values are on default:
  - Click on Header-Values (Show)
  - Click on Reset Header-Values to default and click OK in the Confirmation box
  - Try again
The (Re)-Encrypted-File(s) are shown in a File-List, next to or below (on tiny screens) the De/Encrypt-Button. You can't open them (because its encrypted) but you should save them
Overwrite the File in your Game (Maybe make a backup of the game before doing that)
Start the Game and check if the File has been displayed
- If the File is not displayed: (This is very rare ~1/100 Games - Usually you get a Header-Error while you Decrypt Files from these Games them with the default Header-Values. That's a strong indicator that this Game has different Header-Values)
  - You have to set different Header-Values, for this you have to open this File: %PROJECT_DIRECTORY%/www/js/rpg_core.js
    - For RPG-Maker-MZ the File is here: %PROJECT_DIRECTORY%/js/rpg_core.js
  - There you find the Decrypter-Class, its an insane long File so use the Search function (Strg/Ctrl + F) and search for this String: function Decrypter()
  - There are Values sort below, like this:
```
Decrypter.hasEncryptedImages = false;
Decrypter.hasEncryptedAudio = false;
Decrypter._requestImgFile = [];
Decrypter._headerlength = 16; // <-- Header-Length (In Bytes)
Decrypter._xhrOk = 400;
Decrypter._encryptionKey = "";
Decrypter._ignoreList = [
    "img/system/Window.png"
];
Decrypter.SIGNATURE = "5250474d56000000"; // <-- Header-Signature
Decrypter.VER = "000301"; // <-- Header-Version
Decrypter.REMAIN = "0000000000"; // <-- Header-Remain
```
  Make sure that you copy the values (which have similar names to the fields in the Header-Info Form - I showed you them in my example above)
  - Try to encrypt the File(s) again