About

CTRTool is a general purpose reading/extraction tool for Nintendo 3DS file formats.

Supported File Formats

ExeFs (.exefs)
RomFs (.romfs) (and RomFS wrapped in IVFC)
NCCH Format Variants:
- CTR Executable Image (.cxi)
- CTR File Archive (.cfa)
- CIP (.cip) (These are the processes bundled with the kernel image)
NCCH ExtendedHeader (.exhdr)
CTR Importable Archive (.cia)
NCSD Format Variants:
- CTR Card Image (.cci/.3ds/.3dz)
- CTR System Update (.csu)
ES TitleMetaData (.tmd)
ES eTicket (.tik)
Firmware Images (.firm)
CRR (.crr)