diff --git a/project-83113-unpacker.c b/project-83113-unpacker.c
new file mode 100644
index 0000000..e3428a3
--- /dev/null
+++ b/project-83113-unpacker.c
@@ -0,0 +1,150 @@
+/*
+project-83113-unpacker.c -- some obscure mobile game assets unpacker
+Copyright (C) 2024 Alibek Omarov
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+*/
+#include <stdio.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <errno.h>
+
+struct archive_file_t
+{
+	uint32_t offset;
+	uint32_t size;
+	uint32_t namelen;
+	struct archive_file_t *next;
+	char name[];
+};
+
+static struct archive_file_t *file_list;
+
+static void error( const char *fmt, ... )
+{
+	va_list va;
+
+	va_start( va, fmt );
+	vprintf( fmt, va );
+	va_end( va );
+
+	exit( 1 );
+}
+
+int read_directory( FILE *f, uint32_t directory_size )
+{
+	struct archive_file_t *archive_file;
+	uint32_t offset;
+	uint32_t size;
+	uint32_t namelen;
+
+	if( fread( &namelen, 1, sizeof( namelen ), f ) != sizeof( namelen ))
+		error( "can't read file name length at %d\n", ftell( f ));
+
+	archive_file = malloc( sizeof( *archive_file ) + namelen + 1 );
+	archive_file->namelen = namelen;
+	if( fread( archive_file->name, namelen, 1, f ) != 1 )
+		error( "can't read file name at %d\n", ftell( f ));
+	archive_file->name[namelen] = 0;
+
+	if( fread( &size, 1, sizeof( size ), f ) != sizeof( size ))
+		error( "can't read file size at %d\n", ftell( f ));
+
+	archive_file->size = size;
+
+	if( fread( &offset, 1, sizeof( offset ), f ) != sizeof( offset ))
+		error( "can't read file offset at %d\n", ftell( f ));
+
+	archive_file->offset = offset + directory_size + 8;
+	archive_file->next = file_list;
+	file_list = archive_file;
+
+	printf( "discovered %s at 0x%x size 0x%x\n", archive_file->name, offset, size );
+
+	return 1;
+}
+
+void create_directory( char *path )
+{
+	char *p = path;
+	int err;
+
+	while(( p = strchr( p, '/' )))
+	{
+		*p = 0;
+		err = mkdir( path, 0777 );
+		if( err < 0 && errno != EEXIST )
+			error( "can't create directory at %s: %s\n", path, strerror( errno ));
+		*p = '/';
+		p++;
+	}
+}
+
+void extract_files( FILE *f )
+{
+	struct archive_file_t *file;
+
+	for( file = file_list; file; file = file->next )
+	{
+		char *tmp = malloc( file->size );
+		if( fseek( f, file->offset, SEEK_SET ) < 0 )
+			error( "can't seek to %d: %s\n", file->offset, strerror( errno ));
+
+		if( fread( tmp, file->size, 1, f ) != 1 )
+			error( "can't read file %s\n", file->name );
+
+		create_directory( file->name );
+
+		FILE *out = fopen( file->name, "wb" );
+		if( !out )
+			error( "can't create file %s: %s\n", file->name, strerror( errno ));
+
+		if( fwrite( tmp, file->size, 1, out ) != 1 )
+			error( "can't write file %s: %s\n", file->name, strerror( errno ));
+
+		printf( "extracted %s...\n", file->name );
+		free( tmp );
+		fclose( out );
+	}
+}
+
+int main( int argc, char **argv )
+{
+	FILE *f;
+
+	if( argc != 2 )
+		error( "usage: %s <data.pap or main.2.corp.ncsoft.belle.obb>\n", argv[0] );
+
+	f = fopen( argv[1], "rb" );
+	uint32_t file_size, directory_size;
+
+	fseek( f, 0, SEEK_END );
+	file_size = ftell( f );
+	fseek( f, 0, SEEK_SET );
+
+	printf( "file size is %d\n", file_size );
+	if( fread( &directory_size, 1, sizeof( directory_size ), f ) != sizeof( directory_size ))
+		error( "can't read directory size\n" );
+
+	// skip 4 bytes of unknown stuff
+	fseek( f, 4, SEEK_CUR );
+
+	while( ftell( f ) < directory_size + 8 )
+		read_directory( f, directory_size );
+
+	extract_files( f );
+
+	return 0;
+}