libsf.db TCP Fingerprinting database

[Harish KS]

Hi all,

I am trying to use libsf library in MinGW for active fingerprint OS detection. It uses libsf.db fingerprint databse. This databse is generate at compile time by taking a flat file database as input. I could compile the sources of libsf but not able to generate this libsf.db database. If anyone ahs used libsf, please help.

[Matti_Kurkela]

This seems to be the developer's source package for libsf:

http://www.packetfactory.net/projects/libsf/

The source package contains a README file which contains the instructions for compiling and installing the software. The compilation step should also compile the db creation tool in the "import" sub-directory.

The Makefiles suggest that the name of the db creation tool might be "libsf_import", not "db_import". And there are two fingerprint files in the "import" directory: nmap-fp.txt and nmap-os-fingerprints.

Looks like the developer has been a little sloppy in updating the documentation to match the new changes!

If I'm correct, the step 3 of the instructions in the README should be:

3. cd import; ./libsf_import -a nmap-os-fingerprints

This step should produce the libsf.db file. The step 4 is just copying the file to wherever it is supposed to be installed.

MK

[Harish KS]

Hi,

Thanks for the reply kurkela.

Yes, i tried to create libsf.db by using libsf_import file. But not able to do so. dbptr->put (dbptr->put(dbptr, &dbkey, &dbdata, R_NOOVERWRITE) in libsf_import.c file) is failing inconsistantly. I got the libdb binaries libdb-1.85 binaries (db.h and libdb.a) for mingw from net and using these to create libsf.db.

Since i don't have libsf.db, i am not able to use libsf to detect OS of remote node.

I am attaching the DB generation part of libsf that is used to generate libsf.db.


Regards
Harish