Native format of Hashcat password "recovery" utility.
A sample of file for testing can be downloaded from https://web.archive.org/web/20150220013635if_/http://hashcat.net:80/misc/example_hashes/hashcat.hccap
This page hosts a formal specification of Hashcat capture file (old version) using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.
All parsing code for Python generated by Kaitai Struct depends on the Python runtime library. You have to install it before you can parse data.
The Python runtime library can be installed from PyPI:
python3 -m pip install kaitaistructParse a local file and get structure in memory:
data = Hccap.from_file("path/to/local/file.hccap")
Or parse structure from a bytes:
from kaitaistruct import KaitaiStream, BytesIO
raw = b"\x00\x01\x02..."
data = Hccap(KaitaiStream(BytesIO(raw)))
After that, one can get various attributes from the structure by invoking getter methods like:
data.records # => get records
# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
import kaitaistruct
from kaitaistruct import KaitaiStruct, KaitaiStream, BytesIO
if getattr(kaitaistruct, 'API_VERSION', (0, 9)) < (0, 9):
raise Exception("Incompatible Kaitai Struct Python API: 0.9 or later is required, but you have %s" % (kaitaistruct.__version__))
class Hccap(KaitaiStruct):
"""Native format of Hashcat password "recovery" utility.
A sample of file for testing can be downloaded from
<https://web.archive.org/web/20150220013635if_/http://hashcat.net:80/misc/example_hashes/hashcat.hccap>
.. seealso::
Source - https://hashcat.net/wiki/doku.php?id=hccap
"""
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._read()
def _read(self):
self.records = []
i = 0
while not self._io.is_eof():
self.records.append(Hccap.HccapRecord(self._io, self, self._root))
i += 1
class HccapRecord(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._read()
def _read(self):
self.essid = self._io.read_bytes(36)
self.mac_ap = self._io.read_bytes(6)
self.mac_station = self._io.read_bytes(6)
self.nonce_station = self._io.read_bytes(32)
self.nonce_ap = self._io.read_bytes(32)
self._raw_eapol_buffer = self._io.read_bytes(256)
_io__raw_eapol_buffer = KaitaiStream(BytesIO(self._raw_eapol_buffer))
self.eapol_buffer = Hccap.EapolDummy(_io__raw_eapol_buffer, self, self._root)
self.len_eapol = self._io.read_u4le()
self.keyver = self._io.read_u4le()
self.keymic = self._io.read_bytes(16)
@property
def eapol(self):
if hasattr(self, '_m_eapol'):
return self._m_eapol
io = self.eapol_buffer._io
_pos = io.pos()
io.seek(0)
self._m_eapol = io.read_bytes(self.len_eapol)
io.seek(_pos)
return getattr(self, '_m_eapol', None)
class EapolDummy(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._read()
def _read(self):
pass