From 01b3a1a1cda82a7520e49dac670616fe7280a525 Mon Sep 17 00:00:00 2001 From: Razmoth <32140579+Razmoth@users.noreply.github.com> Date: Sat, 20 Jan 2024 19:57:00 +0400 Subject: [PATCH] - [Core] Added new entries. --- AssetStudio/FileReader.cs | 12 ++++ AssetStudio/GameManager.cs | 9 ++- AssetStudio/ImportHelper.cs | 115 +++++++++++++++++++++++++++++++++++- 3 files changed, 134 insertions(+), 2 deletions(-) diff --git a/AssetStudio/FileReader.cs b/AssetStudio/FileReader.cs index 041816b..9d614e3 100644 --- a/AssetStudio/FileReader.cs +++ b/AssetStudio/FileReader.cs @@ -215,6 +215,18 @@ namespace AssetStudio case GameType.JJKPhantomParade: reader = DecryptJJKPhantomParade(reader); break; + case GameType.MuvLuvDimensions: + reader = DecryptMuvLuvDimensions(reader); + break; + case GameType.PartyAnimals: + reader = DecryptPartyAnimals(reader); + break; + case GameType.LoveAndDeepspace: + reader = DecryptLoveAndDeepspace(reader); + break; + case GameType.SchoolGirlStrikers: + reader = DecryptSchoolGirlStrikers(reader); + break; } } if (reader.FileType == FileType.BundleFile && game.Type.IsBlockFile() || reader.FileType == FileType.ENCRFile || reader.FileType == FileType.BlbFile) diff --git a/AssetStudio/GameManager.cs b/AssetStudio/GameManager.cs index 3f2fbcd..6dc916a 100644 --- a/AssetStudio/GameManager.cs +++ b/AssetStudio/GameManager.cs @@ -44,6 +44,10 @@ namespace AssetStudio Games.Add(index++, new Game(GameType.Reverse1999)); Games.Add(index++, new Game(GameType.ArknightsEndfield)); Games.Add(index++, new Game(GameType.JJKPhantomParade)); + Games.Add(index++, new Game(GameType.MuvLuvDimensions)); + Games.Add(index++, new Game(GameType.PartyAnimals)); + Games.Add(index++, new Game(GameType.LoveAndDeepspace)); + Games.Add(index++, new Game(GameType.SchoolGirlStrikers)); } public static Game GetGame(GameType gameType) => GetGame((int)gameType); public static Game GetGame(int index) @@ -159,7 +163,10 @@ namespace AssetStudio Reverse1999, ArknightsEndfield, JJKPhantomParade, - + MuvLuvDimensions, + PartyAnimals, + LoveAndDeepspace, + SchoolGirlStrikers, } public static class GameTypes diff --git a/AssetStudio/ImportHelper.cs b/AssetStudio/ImportHelper.cs index f82ab71..18b5245 100644 --- a/AssetStudio/ImportHelper.cs +++ b/AssetStudio/ImportHelper.cs @@ -977,7 +977,6 @@ namespace AssetStudio throw new Exception("Invalid generation"); } - long value = 0; var data = reader.ReadBytes((int)reader.Remaining); var blockCount = data.Length / 0x10; @@ -1016,5 +1015,119 @@ namespace AssetStudio ms.Position = 0; return new FileReader(reader.FullPath, ms); } + + public static FileReader DecryptMuvLuvDimensions(FileReader reader) + { + Logger.Verbose($"Attempting to decrypt file {reader.FileName} with Muv Luv Dimensions encryption"); + + var key = new byte[] { 0xFD, 0x13, 0x7B, 0xEE, 0xC5, 0xFE, 0x50, 0x12, 0x4D, 0x38 }; + + var data = reader.ReadBytes((int)reader.Remaining); + for (int i = 0; i < data.Length; i++) + { + data[i] ^= key[i % key.Length]; + } + + Logger.Verbose("Decrypted Muv Luv Dimensions file successfully !!"); + + MemoryStream ms = new(); + ms.Write(data); + ms.Position = 0; + return new FileReader(reader.FullPath, ms); + } + + public static FileReader DecryptPartyAnimals(FileReader reader) + { + Logger.Verbose($"Attempting to decrypt file {reader.FileName} with Party Animals encryption"); + + var table = new int[] { 0x8C, 0xE8, 0x93, 0xEB, 0xD1, 0xF0, 0x82, 0xCF, 0x9A, 0xBB, 0xEF, 0xB8, 0xC7, 0xA8, 0x8E, 0xDB, 0x96, 0x80, 0xAD, 0xC2, 0x86, 0xD8, 0x81, 0xFA, 0xE6, 0xAF, 0xD0, 0x9E, 0x95, 0xFE, 0xF6, 0x88, 0xF8, 0x85, 0xE4, 0xBC, 0xB6, 0xA4, 0xCB, 0xE3, 0xE0, 0x9F, 0xD3, 0xA7, 0xA3, 0xFF, 0x9C, 0x9D, 0xEE, 0xDE, 0xC9, 0xB0, 0xD5, 0xBE, 0x89, 0xF4, 0xBF, 0xED, 0xD9, 0xBA, 0xA5, 0xCE, 0x94, 0xC5, 0xCC, 0x90, 0xC8, 0xBD, 0x92, 0xB7, 0xF7, 0x97, 0x9B, 0xAB, 0xB4, 0xE9, 0xA6, 0xAC, 0xA9, 0xB2, 0xC1, 0xE5, 0xA1, 0xA0, 0xC4, 0xDC, 0xEC, 0xFD, 0xC0, 0xF3, 0xD2, 0xB3, 0x98, 0x8B, 0xD6, 0xB5, 0xE7, 0xAE, 0xC3, 0xE1, 0xB1, 0xF5, 0xA2, 0xE2, 0xF2, 0xAA, 0xF9, 0x99, 0xD4, 0x84, 0xFC, 0x8D, 0xF1, 0xDF, 0xB9, 0xD7, 0xDA, 0x91, 0xCA, 0x83, 0xEA, 0x8F, 0xCD, 0xDD, 0xC6, 0x87, 0xFB, 0x8A }; + + var name = Path.GetFileNameWithoutExtension(reader.FileName); + var nameBytes = Encoding.UTF8.GetBytes(name); + + var key = (byte)(0x7C ^ nameBytes.Aggregate((a, b) => (byte)(a ^ b))); + var pos = table[nameBytes.Aggregate((a, b) => (byte)(a + b)) % table.Length]; + + var data = reader.ReadBytes((int)reader.Remaining); + + for (int i = pos; i < data.Length; i++) + { + data[i] ^= (byte)(key ^ (i / 8) + 1); + } + + Logger.Verbose("Decrypted Party Animals file successfully !!"); + + MemoryStream ms = new(); + ms.Write(data); + ms.Position = 0; + return new FileReader(reader.FullPath, ms); + } + + public static FileReader DecryptLoveAndDeepspace(FileReader reader) + { + Logger.Verbose($"Attempting to decrypt file {reader.FileName} with Love And Deepspace encryption"); + + var vector = new byte[] { 0x35, 0x6B, 0x05, 0x00 }; + var originalHeader = new byte[] { 0x55, 0x6E, 0x69, 0x74, 0x79, 0x46, 0x53, 0x00, 0x00, 0x00, 0x00, 0x07, 0x35, 0x2E, 0x78, 0x2E }; + + var seed = reader.ReadBytes(0x10); + for (int i = 0; i < seed.Length; i++) + { + var b = (byte)(seed[i] ^ originalHeader[i] ^ vector[0]); + seed[i] = b != originalHeader[i] ? b : originalHeader[i]; + } + + var key = new byte[0x40]; + for (int i = 0; i < vector.Length; i++) + { + for (int j = 0; j < seed.Length; j++) + { + var offset = i * 0x10; + key[offset + j] = (byte)(seed[j] ^ vector[i]); + } + } + + reader.Position = 0; + var data = reader.ReadBytes((int)reader.Remaining); + for (int i = 0; i < data.Length; i++) + { + data[i] ^= key[i % key.Length]; + } + + Logger.Verbose("Decrypted Love And Deepspace file successfully !!"); + + MemoryStream ms = new(); + ms.Write(data); + ms.Position = 0; + return new FileReader(reader.FullPath, ms); + } + + public static FileReader DecryptSchoolGirlStrikers(FileReader reader) + { + Logger.Verbose($"Attempting to decrypt file {reader.FileName} with School Girl Strikers encryption"); + + var data = reader.ReadBytes((int)reader.Remaining); + + byte key = 0xFF; + var stride = data.Length % 7 + 3; + for (int i = 1; i < data.Length; i++) + { + if (i % stride != 0) + { + data[i] ^= key; + } + else + { + key = (byte)~key; + } + } + + Logger.Verbose("Decrypted School Girl Strikers file successfully !!"); + + MemoryStream ms = new(); + ms.Write(data); + ms.Position = 0; + return new FileReader(reader.FullPath, ms); + } } }