Overview

Contains debug patches for Higurashi no Naku Koro ni visual novel released for Nintendo Switch.

Most of them are aided to ease the development of modifications for game. See higu_debug_patchset.wps for concrete things the patchset does. See higu_patchset directory for already compiled patches

Build

This project uses a custom build system for patches for ease of maintaince. To build patches usable for the actual game you would need an actual game's files and a Linux environment. WSL or cygwin migh work, but not supported.

Build system requires a working set of binutils for aarch64. The code assumes aarch64-linux-gnu, but other flavours should work too. Change the TOOLCHAIN variable in patch_helper.py for this.

Along with binutils, a c preprocessor (cpp) and python3 are needed.

You will also need a game's uncompressed executable file. For this you would require game files along with custom firmware installed on your switch. Here's a summary on how to get it:

• Somehow dump the update program nca for the game (Title id - 0100F6A00A684000, NcaId - e739d24e6ec4d3e4cee8f8a215fd38b7, sha1sum - fd5464f0a093a4a6e4141cb5d34fdd535f1eabb5)

• Get the titlekey to decrypt the game files (for example using lockpick)

• Extract exefs files from it (i. e. using hactool: hactool e739d24e6ec4d3e4cee8f8a215fd38b7.nca --titlekey=[INSERT_TITLE_KEY_HERE] --exefsdir=exefs)

• Get the main file from exefs (buildid - 0C28B121BAC7801C3DCFF93B81820BFA00000000000000000000000000000000, sha1sum - 672183daf5438e8fe0a6986813188de30c3152b7) and make an uncompressed version of it (i. e. hactool -t nso main --uncompressed=main_uncompressed)

• Put the uncompressed file to this directory with the name main_uncompressed

Then run build.sh. This should build a patchset (and output nothing on success).

Usage

To use those patches you would need a game on your switch and an Atmosphère custom firmware installed.

Put the higu_patchset directory into /atmosphere/exefs_patches on your switch's sd card.