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Add world decrypt // and package addons to .mcaddon

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This commit is contained in:
Li 2025-01-21 22:58:26 +13:00
parent a441bfe929
commit b67526b2cc
15 changed files with 565 additions and 125 deletions
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108
McCrypt/Marketplace.cs
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@ -12,8 +12,6 @@ namespace McCrypt
public class Marketplace
{
// Hi mojang <3
// https://www.youtube.com/watch?v=jIM6dN3ogbk
// https://www.youtube.com/watch?v=mnnYCJNhw7w
private static string[] dontEncrypt = new string[] { "manifest.json", "contents.json", "texts", "pack_icon.png", "ui"};
private struct contentsJson
@ -58,6 +56,37 @@ namespace McCrypt
}
}
// check if prid tag is present in a world
// can be used to check if its encrypted.
public static bool IsLevelEncrypted(string levelPath)
{
string ldbPath = Path.Combine(levelPath, "db");
if (!Directory.Exists(ldbPath)) return false;
string[] ldbFiles = Directory.GetFiles(ldbPath, "*.ldb", SearchOption.TopDirectoryOnly);
foreach (string ldbFile in ldbFiles)
{
string file = Path.Combine(ldbPath, ldbFile);
using (FileStream fs = File.OpenRead(file)) // Open file for reading
{
using (BinaryReader br = new BinaryReader(fs)) // Create a binary reader overlay of it
{
if (fs.Length <= 0x10)
continue;
uint version = br.ReadUInt32();
uint magic = br.ReadUInt32();
UInt64 unk = br.ReadUInt64();
if (version == 0 && magic == 0x9bcfb9fc) // is valid header?
return true;
}
}
}
return false;
}
// Change all skins type to "free" instead of "paid"
// This makes the game let you actually apply them
public static void CrackSkinsJson(string skinsJsonFile)
@ -160,54 +189,53 @@ namespace McCrypt
// For the file types that have a header-
private static byte[] worldOrContentsJsonDecrypt(string file)
{
FileStream fs = File.OpenRead(file); // Open file for reading
BinaryReader br = new BinaryReader(fs); // Create a binary reader overlay of it
using (FileStream fs = File.OpenRead(file))
{ // Open file for reading
using (BinaryReader br = new BinaryReader(fs))
{
// Create a binary reader overlay of it
if (fs.Length <= 0)
{
fs.Dispose();
return new byte[0] { };
}
if (fs.Length <= 0)
return new byte[0] { };
uint version = br.ReadUInt32();
uint magic = br.ReadUInt32();
UInt64 unk = br.ReadUInt64();
uint version = br.ReadUInt32();
uint magic = br.ReadUInt32();
UInt64 unk = br.ReadUInt64();
if (version == 0 && magic == 0x9bcfb9fc) // is valid header?
{
if (version == 0 && magic == 0x9bcfb9fc) // is valid header?
{
int len = fs.ReadByte();
string uuid = Utils.ReadString(fs, len); // Read the pack UUID for this file
byte[] key = Keys.LookupKey(uuid); // Look for key inside .ent / keys.db
int len = fs.ReadByte();
string uuid = Utils.ReadString(fs, len); // Read the pack UUID for this file
byte[] key = Keys.LookupKey(uuid); // Look for key inside .ent / keys.db
if (key == null)
key = Encoding.UTF8.GetBytes("s5s5ejuDru4uchuF2drUFuthaspAbepE"); // Generic skinpack key
// Every skinpack has the same key lol
// This might be wrong, but hey! if it works, it works :D
fs.Seek(0x100, SeekOrigin.Begin); // Read ciphertext
byte[] ciphertext = new byte[fs.Length - 0x100];
fs.Read(ciphertext, 0x00, ciphertext.Length);
if (key == null)
key = Encoding.UTF8.GetBytes("s5s5ejuDru4uchuF2drUFuthaspAbepE"); // Generic skinpack key
// Every skinpack has the same key lol
// This might be wrong, but hey! if it works, it works :D
fs.Seek(0x100, SeekOrigin.Begin); // Read ciphertext
byte[] ciphertext = new byte[fs.Length - 0x100];
fs.Read(ciphertext, 0x00, ciphertext.Length);
byte[] iv = new byte[16]; // Copy first 16 bytes of Key for IV
Array.Copy(key, iv, iv.Length);
byte[] iv = new byte[16]; // Copy first 16 bytes of Key for IV
Array.Copy(key, iv, iv.Length);
byte[] plaintext = Crypto.Aes256CfbDecrypt(key, iv, ciphertext); // Decrypt data
byte[] plaintext = Crypto.Aes256CfbDecrypt(key, iv, ciphertext); // Decrypt data
fs.Dispose();
return plaintext;
return plaintext;
}
else
{
fs.Dispose();
throw new InvalidDataException("Not a valid LEVELDB or CONTENTS.JSON file.");
}
else
{
throw new InvalidDataException("Not a valid LEVELDB or CONTENTS.JSON file.");
}
}
}
}
// Read contents.json, and decrypt all files inside
// Now Multi-Threaded for speed!
private static void decryptContentsJsonFiles(string contentsJsonPath, List<Thread> threadList)
@ -239,8 +267,9 @@ namespace McCrypt
File.WriteAllBytes(filePath, plainText); // Write back decrypted filie
});
thrd.Priority = ThreadPriority.Highest;
threadList.Add(thrd);
thrd.Start();
if (!Config.MultiThread) thrd.Join();
else threadList.Add(thrd);
}
}
@ -311,13 +340,12 @@ namespace McCrypt
File.WriteAllBytes(fileToDecrypt, decryptedData); // Write to disk
}
catch (InvalidDataException)
{
Console.Error.WriteLine("Failed to decrypt db/" + Path.GetFileName(levelDbFile));
}
{ }
});
thrd.Priority = ThreadPriority.Highest;
threadList.Add(thrd);
thrd.Start();
if (!Config.MultiThread) thrd.Join();
else threadList.Add(thrd);
}
}
}