internal static void Run(string path, Tasks task)
{
var bytes = File.ReadAllBytes(path);
Console.Write(string.Format("[+] Checking {0}...", Path.GetFileName(path)));
if (bytes[3] == 0x80)
{
Console.Write(" <Encrypted>\n");
if (task == Tasks.Encrypt)
{
Console.WriteLine(string.Format("[+] {0} is already encrypted... <Aborted>", Path.GetFileName(path)));
return;
}
else if (task == Tasks.Decompile || task == Tasks.Recompile)
{
Console.WriteLine("[+] You cannot decompile an encrypted lua... <Aborted>");
return;
}
}
else if (bytes[3] == 0x02)
{
Console.Write(" <Decrypted>\n");
if (task == Tasks.Decrypt)
{
Console.WriteLine(string.Format("[+] {0} is already decrypted... <Aborted>", Path.GetFileName(path)));
return;
}
}
else if (task != Tasks.Recompile)
{
Console.Write(" <Unknown>\n");
Console.WriteLine("[+] Not a valid or damaged lua file... <Aborted>");
return;
}
else
{
Console.Write(" <OK>\n");
}
Console.Write($"[+] {(task == Tasks.Decrypt ? "Decrypting" : task == Tasks.Encrypt ? "Encrypting" : task == Tasks.Decompile ? "Decompiling" : "Recompiling")} {Path.GetFileName(path)}...");
var luaPath = Path.Combine(PathMgr.Environment(task == Tasks.Decrypt ? "Decrypted_lua" : task == Tasks.Encrypt ? "Encrypted_lua" : task == Tasks.Decompile ? "Decompiled_lua" : "Recompiled_lua"), Path.GetFileName(path));
if (File.Exists(luaPath))
{
File.Delete(luaPath);
}
try
{
if (task == Tasks.Decrypt || task == Tasks.Encrypt)
{
using (var reader = new BinaryReader(new MemoryStream(bytes)))
{
var magic = reader.ReadBytes(3);
var version = reader.ReadByte();
var bits = reader.ReadUleb128();
var is_stripped = ((bits & 2u) != 0u);
if (!is_stripped)
{
var length = reader.ReadUleb128();
var name = Encoding.UTF8.GetString(reader.ReadBytes((int)length));
}
while (reader.BaseStream.Position < reader.BaseStream.Length)
{
var size = reader.ReadUleb128();
if (size == 0)
{
break;
}
var next = reader.BaseStream.Position + size;
bits = reader.ReadByte();
var arguments_count = reader.ReadByte();
var framesize = reader.ReadByte();
var upvalues_count = reader.ReadByte();
var complex_constants_count = reader.ReadUleb128();
var numeric_constants_count = reader.ReadUleb128();
var instructions_count = reader.ReadUleb128();
var start = (int)reader.BaseStream.Position;
if (task == Tasks.Encrypt)
{
bytes[3] = 0x80;
bytes = Lock(start, bytes, (int)instructions_count);
}
else
{
bytes[3] = 2;
bytes = Unlock(start, bytes, (int)instructions_count);
}
reader.BaseStream.Position = next;
}
}
File.WriteAllBytes(luaPath, bytes);
}
else if (task == Tasks.Decompile || task == Tasks.Recompile)
{
Utils.Command(task == Tasks.Decompile ? $"python main.py -f \"{path}\" -o \"{luaPath}\"" : $"luajit.exe -b \"{path}\" \"{luaPath}\"");
}
Program.isInvalid = false;
}
catch (Exception e)
{
Utils.ExceptionLogger($"Exception detected during {(task == Tasks.Decrypt ? "decrypting" : task == Tasks.Encrypt ? "encrypting" : task == Tasks.Decompile ? "decompiling" : "recompiling")} {Path.GetFileName(path)}", e);
}
finally
{
if (File.Exists(luaPath))
{
SuccessCount++;
Console.Write("<done>\n");
}
else
{
Console.Write("<failed>\n");
FailedCount++;
}
}
}
internal static void Initialize(string lua, Tasks tasks)
{
try
{
Console.Write($"[+] {(tasks == Tasks.Decrypt ? "Decrypting" : tasks == Tasks.Encrypt ? "Encrypting" : tasks == Tasks.Decompile ? "Decompiling" : "Recompiling")} {Path.GetFileName(lua)}...");
var luaPath = Path.Combine(PathMgr.Environment(tasks == Tasks.Decrypt ? "Decrypted_lua" : tasks == Tasks.Encrypt ? "Encrypted_lua" : tasks == Tasks.Decompile ? "Decompiled_lua" : "Recompiled_lua"), Path.GetFileName(lua));
if (tasks == Tasks.Decrypt || tasks == Tasks.Encrypt)
{
var bytes = File.ReadAllBytes(lua);
var reader = new BinaryReader(new MemoryStream(bytes));
var magic = reader.ReadBytes(3);
var version = reader.ReadByte();
var bits = reader.ReadUleb128();
var is_stripped = ((bits & 2u) != 0u);
if (!is_stripped)
{
var length = reader.ReadUleb128();
var name = Encoding.UTF8.GetString(reader.ReadBytes((int)length));
}
while (reader.BaseStream.Position < reader.BaseStream.Length)
{
var size = reader.ReadUleb128();
if (size == 0)
{
break;
}
var next = reader.BaseStream.Position + size;
bits = reader.ReadByte();
var arguments_count = reader.ReadByte();
var framesize = reader.ReadByte();
var upvalues_count = reader.ReadByte();
var complex_constants_count = reader.ReadUleb128();
var numeric_constants_count = reader.ReadUleb128();
var instructions_count = reader.ReadUleb128();
var start = (int)reader.BaseStream.Position;
start += 4;
var v2 = 0;
do
{
if (tasks == Tasks.Encrypt)
{
bytes[3] = 0x80;
var v3 = bytes[start - 4];
start += 4;
var v4 = bytes[start - 7] ^ v2++;
bytes[start - 8] = (byte)(Properties.Resources.Lock[v3] ^ v4);
}
else
{
bytes[3] = 2;
var v3 = bytes[start - 4];
start += 4;
var v4 = bytes[start - 7] ^ v3 ^ (v2++ & 0xFF);
bytes[start - 8] = Properties.Resources.Unlock[v4];
}
}while (v2 != (int)instructions_count);
reader.BaseStream.Position = next;
}
if (File.Exists(luaPath))
{
File.Delete(luaPath);
}
File.WriteAllBytes(luaPath, bytes);
}
else if (tasks == Tasks.Decompile || tasks == Tasks.Recompile)
{
Utils.Command(tasks == Tasks.Decompile ? $"python main.py -f \"{lua}\" -o \"{luaPath}\"" : $"luajit.exe -b \"{lua}\" \"{luaPath}\"");
}
Console.Write("<done>");
Console.WriteLine();
}
catch (Exception e)
{
Console.Write("<exception-detected>");
}
}
