Resolving OID from a MIB

About OID objects

OID objects are created with an ASN1_OID class:

>>> o1=ASN1_OID("2.5.29.10")
>>> o2=ASN1_OID("1.2.840.113549.1.1.1")
>>> o1,o2
(<ASN1_OID['.2.5.29.10']>, <ASN1_OID['.1.2.840.113549.1.1.1']>)

Loading a MIB

Scapy can parse MIB files and become aware of a mapping between an OID and its name:

>>> load_mib("mib/*")
>>> o1,o2
(<ASN1_OID['basicConstraints']>, <ASN1_OID['rsaEncryption']>)

The MIB files I've used are attached to this page.

Scapy's MIB database

All MIB information is stored into the conf.mib object. This object can be used to find the OID of a name:

>>> conf.mib.sha1_with_rsa_signature
'1.2.840.113549.1.1.5'

or to resolve an OID:

>>> conf.mib._oidname("1.2.3.6.1.4.1.5")
'enterprises.5'

It is even possible to graph it:

>>> conf.mib._make_graph()