add GOZ

Author: Modder4869

AssetStudio/FileReader.cs

@@ -303,6 +303,9 @@ public static FileReader PreProcessing(this FileReader reader, Game game)
                     case GameType.DawnOfKingdom:
                         reader = DecryptDawnOfKingdom(reader);
                         break;
+                    case GameType.GOZ:
+                        reader = DecryptGOZ(reader);
+                        break;
 
                 }
             }

AssetStudio/GameManager.cs

@@ -68,6 +68,7 @@ static GameManager()
             Games.Add(index++, new Game(GameType.LATALE));
             Games.Add(index++, new Game(GameType.SRU));
             Games.Add(index++, new Game(GameType.DawnOfKingdom));
+            Games.Add(index++, new Game(GameType.GOZ));
 
         }
 
@@ -217,7 +218,8 @@ public enum GameType
         SSTX,
         LATALE,
         SRU,
-        DawnOfKingdom
+        DawnOfKingdom,
+        GOZ
     }
 
     public static class GameTypes
@@ -261,6 +263,7 @@ public static class GameTypes
         public static bool isSSTX(this GameType type) => type == GameType.SSTX;
         public static bool isLATALE(this GameType type) => type == GameType.LATALE;
         public static bool isDawnOfKingdom(this GameType type) => type == GameType.DawnOfKingdom;
+        public static bool IsGOZ(this GameType type) => type == GameType.GOZ;
 
         public static bool IsGIGroup(this GameType type) => type switch
         {

AssetStudio/ImportHelper.cs

@@ -1685,14 +1685,14 @@ public static FileReader DecryptDawnOfKingdom(FileReader reader)
                 signature = "UnityFS",
                 unityVersion = "5.x.x",
                 unityRevision = "2019.4.0f1",
-                size = reader.ReadInt64()+16,
+                size = reader.ReadInt64() + 16,
                 compressedBlocksInfoSize = reader.ReadUInt32(),
                 uncompressedBlocksInfoSize = reader.ReadUInt32(),
                 flags = (ArchiveFlags)reader.ReadUInt32(),
             };
             m_Header.WriteToStream(ms, 15);
             var data = reader.ReadBytes((int)reader.Remaining);
-        
+
             ms.Write(data);
             //File.WriteAllBytes("dawntest.bin", ms.ToArray());
             ms.Position = 0;
@@ -1739,5 +1739,32 @@ public static FileReader DecryptSRU(FileReader reader)
 
 
         }
+        public static FileReader DecryptGOZ(FileReader reader)
+        {
+            //_key = Convert.FromBase64String("5pvoKUvp2EinvR5C");
+            //_salt = Convert.FromBase64String("Vh6TCcm4sJsO9VpS");
+            //decrypt abc textasset to get final key
+            var key = Convert.FromHexString("DF18C8086D7F9F76374C212DE51B01506760A10D39B89CADBB15A3F5CD026D39");
+            var IV = Convert.FromHexString("FE1A4BA3A9FB1E20A17E816F546C6E8D");
+            var data = reader.ReadBytes((int)reader.Remaining);
+            using var rijndael = new RijndaelManaged
+            {
+                KeySize = 256,
+                BlockSize = 128,
+                Mode = CipherMode.CBC,
+                Padding = PaddingMode.PKCS7,
+                Key = key,
+                IV = IV
+
+            };
+            using var decryptor = rijndael.CreateDecryptor();
+            byte[] decryptedData = decryptor.TransformFinalBlock(data, 0, data.Length);
+
+            var ms = new MemoryStream();
+            ms.Write(decryptedData, 0, decryptedData.Length);
+            ms.Position = 0;
+            //File.WriteAllBytes("GOZ.bin", ms.ToArray());
+            return new FileReader(reader.FullPath, ms);
+        }
     }
 }