Unerf

BioWare ERF (.erf, .mod, .nwm, .sav) archive extractor.

Synopsis

unerf [<options>] <command> <archive> [<file> [...]]

Description

unerf extract BioWare ERF archives, found in many BioWare games as files with the extension .erf, .mod, .nwm or .sav. Moreover, in some games, a .rim file might be an ERF instead of a RIM.

There's several different versions of ERFs. This tool supports the version V1.0 (Neverwinter Nights), V1.1 (Neverwinter Nights 2), V2.0 (Dragon Age: Origins), V2.2 (Dragon Age: Origins) and V3.0 (Dragon Age II).

Supported features:

• Archives with stripped filenames. The name hash is searched for in a big lookup table. If it is not found, the file is listed and extracted as a hexadecimal representation of the hash
• zlib-compressed files are supported and transparently decompressed
• Blowfish-encrypted archives are supported and are, provided you know the password, transparently decrypted
• Archives that contain full paths are supported. You can either strip the directory and extract the plain filenames, or substitute the directory separator with a '='
• Archives with numerical extension IDs belonging to different games can be aliased accordingly.

Unsupported features:

• XOR-encrypted archives
• Creating directories when extracting archives with full paths. Please also note that by stripped the directories of files in these archives, you might overwrite already extracted files

Options

-h
--help

Show a help text and exit.

--version

Show version information and exit.

--nwn2

Alias file types according to Neverwinter Nights 2 rules. Neverwinter Nights 2 reuses a few file extension IDs differently than other BioWare games.

--jade

Alias file types according to Jade Empire rules. Jade Empire reuses a few file extension IDs differently than other BioWare games.

--pass <hex>

Password to decrypt this archive. This password needs to be specified in hexadecimal notation, even if it's an ASCII string. For example, "4CF223AB" would be a valid password string. "Foobar" would not.

<command>

i   Display meta-information about the archive

l   List archive contents

v   List archive contents with full paths

e   Extract files to current directory

s   Extract files to current directory with full name

<archive>

The ERF archive to read.

[<file>]

One or more files to extract. If none are given, the whole archive is extracted.

Examples

View meta-information of the archive Shadowlords1.mod:

unerf i Shadowlords1.mod

List all files contained in the archive Chapter1.nwm:

unerf l Chapter1.nwm

List all files, with full path, in the archive areas.erf:

unerf v areas.erf

Extract all files from the archive foo.mod:

unerf e foo.mod

Extract the file area1.are from the archive foo.mod:

unerf e foo.mod area1.are

Extract all files, with full path, in the archive areas.erf:

unerf s areas.erf

Extract the file areas\area1.are from the archive areas.erf:

unerf s areas.erf areas\\area1.are

See also

unherf, unrim

References

• https://github.com/xoreos/xoreos-docs/blob/master/specs/bioware/ERF_Format.pdf
• http://social.bioware.com/wiki/datoolset/index.php/ERF