chizui/YarikStudio
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

- [Core] Added new entry

Browse Source
This commit is contained in:
Razmoth
2023-09-29 23:22:41 +04:00
parent 8fbdff05e7
commit b2b1c15644
3 changed files with 35 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
AssetStudio/ImportHelper.cs
View File

@@ -869,5 +869,34 @@ namespace AssetStudio
ms.Position = 0;
return new FileReader(reader.FullPath, ms);
}
public static FileReader DecryptGirlsFrontline(FileReader reader)
{
Logger.Verbose($"Attempting to decrypt file {reader.FileName} with Girls Frontline encryption");
var originalHeader = new byte[] { 0x55, 0x6E, 0x69, 0x74, 0x79, 0x46, 0x53, 0x00, 0x00, 0x00, 0x00, 0x07, 0x35, 0x2E, 0x78, 0x2E };
MemoryStream ms = new();
var key = reader.ReadBytes(0x10);
for (int i = 0; i < key.Length; i++)
{
var b = (byte)(key[i] ^ originalHeader[i]);
key[i] = b != originalHeader[i] ? b : originalHeader[i];
}
var data = reader.ReadBytes((int)reader.Remaining);
var size = Math.Min(data.Length, 0x8000);
for (int i = 0; i < size; i++)
{
data[i] ^= key[i % key.Length];
}
Logger.Verbose("Decrypted Girls Frontline file successfully !!");
ms.Write(originalHeader);
ms.Write(data);
ms.Position = 0;
return new FileReader(reader.FullPath, ms);
}
}
}