Modnite Patcher

An easy and secure way to patch game files.

In Development

• GUI
• Add new files to the game folder
• Auto-create patches
• Security enhancements

Applying a Patch

1. Copy the entire game folder. Modnite Patcher does not create a backup.
2. Launch the application.
3. Enter the path to a patch zip file.
4. Enter the path to the folder you created in step 1.
5. Read the expected actions carefully.
6. Enter y to apply the patches, or n to cancel.

Creating a Patch

The easiest way to learn is to look at a real patch. Download the Localhost Patch for v6.21 in the samples folder, change the extension to zip and open it to see how Port-a-Patch patches are structured.

1. Create a file called manifest.json
2. Use this template:

{
    "Name": "Patch description (e.g. Localhost Patch for v6.21)",
    "Version": 1,
    "Patches": []
}

3. Add one or more of the patch actions below to Patches.
4. Create an empty zip file
5. Put the manifest file into the zip.
6. Put all files you want to insert into paks in the zip.
7. Distribute the .zip file.

Patch Actions

Property	Type	Required?	Comments
PatchType	Enum	Yes	See PatchType enum below
Description	String	No

DecryptPak

Decrypts a pak chunk with the given encryption key.

Property	Type	Required?	Comments
Chunk	String	Yes	The name of the pak chunk without the .pak file extension
Key	String	Yes	The encryption key as a hex string (may be prefixed with 0x)

ReplaceBytes

Replaces a set of bytes in an exe or pak chunk.

Property	Type	Required?	Comments
GameFile	Enum	Yes	The game file to edit (or PakFile)
Chunk	String	Yes, if GameFile == PakFile	The name of the pak chunk without the .pak file extension
SeekOrigin	Enum	Yes	If Begin, the Offset is an absolute file position. If End, the offset is relative to the end of the file
Offset	int64	Yes	The offset in the file
OriginalBytes	String	Yes	A hex string containing the original bytes that are expected at the location. If the bytes does not match the bytes in the file, then this action will be skipped
NewBytes	String	Yes	A hex string containing the new bytes to apply at the Offset

ReplacePakFile

Swaps a file in a decrypted pak chunk with the new one in the zip.

Property	Type	Required?	Comments
Chunk	String	Yes	The name of the pak chunk without the .pak file extension
FileName	String	Yes	The name of the file in the pak chunk
ReplacementFileName	String	Yes	The name of the new file in the zip
Padding	Enum	Yes	If the new file is smaller than the original file, pad the new file with either Spaces or NullBytes.

DeleteFile

Deletes a GameFile.

Property	Type	Required?	Comments
GameFile	Enum	Yes	The game file to delete

Enums

GameFile

Name	Value
GameExecutable	FortniteClient-Win64-Shipping.exe
BEExecutable	FortniteClient-Win64-Shipping_BE.exe
EACExecutable	FortniteClient-Win64-Shipping_EAC.exe
FortniteLauncher	FortniteLauncher.exe

PatchType

DecryptPak
ReplacePakFile
ReplaceBytes
DeleteFile

Logo Attribution

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