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IL2CPP: Write decrypted strings back to metadata

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This commit is contained in:
Katy Coe
2020-12-09 22:46:54 +01:00
parent 76ca271966
commit 39f2bca841
3 changed files with 12 additions and 3 deletions
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2
Il2CppInspector.Common/IL2CPP/Il2CppInspector.cs
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@@ -530,7 +530,7 @@ namespace Il2CppInspector
// Load from a binary stream and metadata stream // Load from a binary stream and metadata stream
// Must be a seekable stream otherwise we catch a System.IO.NotSupportedException // Must be a seekable stream otherwise we catch a System.IO.NotSupportedException
public static List<Il2CppInspector> LoadFromStream(Stream binaryStream, Stream metadataStream, EventHandler<string> statusCallback = null, bool silent = false) { public static List<Il2CppInspector> LoadFromStream(Stream binaryStream, MemoryStream metadataStream, EventHandler<string> statusCallback = null, bool silent = false) {
// Silent operation if requested // Silent operation if requested
var stdout = Console.Out; var stdout = Console.Out;

11
Il2CppInspector.Common/IL2CPP/Metadata.cs
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@@ -48,7 +48,7 @@ namespace Il2CppInspector
// Set if something in the metadata has been modified / decrypted // Set if something in the metadata has been modified / decrypted
public bool IsModified { get; } = false; public bool IsModified { get; } = false;
public Metadata(Stream stream, EventHandler<string> statusCallback = null) : base(stream) public Metadata(MemoryStream stream, EventHandler<string> statusCallback = null) : base(stream)
{ {
// Read magic bytes // Read magic bytes
if (ReadUInt32() != 0xFAB11BAF) { if (ReadUInt32() != 0xFAB11BAF) {
@@ -192,6 +192,15 @@ namespace Il2CppInspector
var decryptedString = Encoding.GetString(encryptedString.Select(b => (byte) (b ^ xorKey)).ToArray()); var decryptedString = Encoding.GetString(encryptedString.Select(b => (byte) (b ^ xorKey)).ToArray());
Strings.Add(offset.current, decryptedString); Strings.Add(offset.current, decryptedString);
} }
// Write changes back in case the user wants to save the metadata file
using (var sw = new StreamWriter(BaseStream, System.Text.Encoding.UTF8, bufferSize: -1, leaveOpen: true)) {
sw.BaseStream.Position = Header.stringOffset;
foreach (var str in Strings.OrderBy(s => s.Key))
sw.Write(str.Value + "\0");
sw.Flush();
}
IsModified = true; IsModified = true;
} }

2
Il2CppInspector.GUI/App.xaml.cs
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@@ -70,7 +70,7 @@ namespace Il2CppInspectorGUI
return await LoadMetadataAsync(stream); return await LoadMetadataAsync(stream);
} }
public Task<bool> LoadMetadataAsync(Stream metadataStream) => public Task<bool> LoadMetadataAsync(MemoryStream metadataStream) =>
Task.Run(() => { Task.Run(() => {
try { try {
OnStatusUpdate?.Invoke(this, "Processing metadata"); OnStatusUpdate?.Invoke(this, "Processing metadata");