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nl unpacker

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bird_egop 2024-11-15 14:30:06 +03:00
parent f069c54541
commit 9124e6463a
3 changed files with 109 additions and 0 deletions
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10
NLUnpacker/NLUnpacker.csproj Normal file
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@ -0,0 +1,10 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>

93
NLUnpacker/Program.cs Normal file
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@ -0,0 +1,93 @@
using System.Buffers.Binary;
using System.Runtime.CompilerServices;
// ПОКА НЕ ПОНЯТНО КАК ОНО КОДИРУЕТСЯ
// using var fs = new FileStream("gamefont.rlb", FileMode.Open, FileAccess.ReadWrite);
//
// int fileCount, c, i;
// byte b, n;
//
// fs.Seek(4, SeekOrigin.Current);
//
// Span<byte> buf2 = stackalloc byte[2];
// Span<byte> buf4 = stackalloc byte[4];
//
// fs.ReadExactly(buf2);
//
// fileCount = BinaryPrimitives.ReadInt16LittleEndian(buf2);
//
// fs.Seek(16 - 2, SeekOrigin.Current);
//
// b = (byte) fs.ReadByte();
// c = (byte) fs.ReadByte();
//
// fs.Seek(12 - 2, SeekOrigin.Current);
//
// Span<byte> buf1 = stackalloc byte[1];
//
// if (32 * fileCount > 0)
// {
// for (i = 0; i < 32 * fileCount; ++i)
// {
// b = (byte) ((b * 2) ^ c);
// n = (byte) c;
// c = (int) ((n >> 1) ^ b);
//
// // Read, modify, and write the byte at the current position
// byte originalByte = (byte) fs.ReadByte();
// fs.Seek(-1, SeekOrigin.Current); // Move back one byte to overwrite it
// buf1[0] = (byte) (originalByte ^ b);
// fs.Write(buf1);
// }
// }
int v40 = 0;
var flags = 0;
var file_bytes = File.ReadAllBytes("gamefont.rlb");
var FileSize = file_bytes.Length;
var file_bytes_copy = file_bytes;
var v8 = flags;
if ((flags & 2) != 0)
{
if (file_bytes[FileSize - 6] != 'A' && file_bytes[FileSize - 5] != 'O')
throw new Exception("4");
v40 = BinaryPrimitives.ReadInt32LittleEndian(
file_bytes.Skip(FileSize - 4)
.Take(4)
.ToArray()
);
}
if (file_bytes[0] != (byte)'N' || file_bytes[1] != (byte)'L' || file_bytes[2] != 0 || file_bytes[3] != 1)
throw new Exception("4");
var file_count = BinaryPrimitives.ReadInt16LittleEndian(
file_bytes.Skip(4)
.Take(2)
.ToArray()
);
var file_count_copy = file_count;
var section_mem_ptr = new byte[32 * file_count];
var section_count = 0;
var sixth_byte = file_bytes_copy[5];
var sixth_byte_shifted_by_1_byte = file_bytes_copy[5] >> 8;
if (32 * file_count > 0)
{
do
{
sixth_byte = (byte) (sixth_byte_shifted_by_1_byte ^ (2 * sixth_byte));
sixth_byte_shifted_by_1_byte = sixth_byte ^ (sixth_byte_shifted_by_1_byte >> 1);
section_mem_ptr[section_count] = (byte) (sixth_byte ^ file_bytes_copy[section_count + 32]);
++section_count;
} while (section_count < 32 * file_count);
v8 = flags;
}
for (var i = 0; i < section_mem_ptr.Length; i++)
{
}
File.WriteAllBytes("gamefont-dump.rlb", file_bytes);

6
ParkanPlayground.sln
View File

@ -4,6 +4,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ParkanPlayground", "ParkanP
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TextureDecoder", "TextureDecoder\TextureDecoder.csproj", "{15D1C9ED-1080-417D-A4D1-CFF80BE6A218}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NLUnpacker", "NLUnpacker\NLUnpacker.csproj", "{50C83E6C-23ED-4A8E-B948-89686A742CF0}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@ -18,5 +20,9 @@ Global
{15D1C9ED-1080-417D-A4D1-CFF80BE6A218}.Debug|Any CPU.Build.0 = Debug|Any CPU
{15D1C9ED-1080-417D-A4D1-CFF80BE6A218}.Release|Any CPU.ActiveCfg = Release|Any CPU
{15D1C9ED-1080-417D-A4D1-CFF80BE6A218}.Release|Any CPU.Build.0 = Release|Any CPU
{50C83E6C-23ED-4A8E-B948-89686A742CF0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{50C83E6C-23ED-4A8E-B948-89686A742CF0}.Debug|Any CPU.Build.0 = Debug|Any CPU
{50C83E6C-23ED-4A8E-B948-89686A742CF0}.Release|Any CPU.ActiveCfg = Release|Any CPU
{50C83E6C-23ED-4A8E-B948-89686A742CF0}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
EndGlobal