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102 lines
4.8 KiB
ReStructuredText
102 lines
4.8 KiB
ReStructuredText
Enum
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====
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The ``enum`` command is used to enumerated facts on the victim host. These facts could be
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system properties, installed packages, SUID binaries, various file permissions, etc. In
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general, they are system properties which may be useful for privilege escalation.
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``pwncat`` enumeration modules are based on a variety of Linux enumeration methodologies
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and other fabulous enumeration scripts such as LinPEAS or LinEnum. ``pwncat`` takes these
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methodologies and implements the enumeration in such a way that the raw information is
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available to both the automated ``pwncat`` modules and to the user in a formatted and
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readable way.
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In this way, ``pwncat`` may automatically perform some enumeration while attempting to
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escalate privieleges, but these enumerated facts will not be lost if the escalation
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fails. For example, the ``privesc`` module always searches for SUID binaries. Even if a
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path to the root user is not identified, ``pwncat`` utilizes the ``enumerate`` module
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to track enumerated facts like SUID binaries. This speeds up future privilege escalation
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as well as allows the user to give the enumerated data a human review.
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Facts
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-----
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``pwncat`` uses the term "fact" to describe any individual piece of data which is
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enumerated by the ``enumerate`` module. Each fact will have a type, a source and some
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abstract data. All data must implement the ``__str__`` operator which is used for the
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short form of the enumeration output. Further, data objects may implement a ``description``
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property which contains a longer form description of the data suitable for more in-depth
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inspection.
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Different types of facts have different data types. If you request a "suid" fact type,
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then each item is expected to have data objects of the class ``pwncat.enumerate.suid.Binary``
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This generic interface allows the ``enum`` command to intelligently build reports while
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not knowing the underlying data type. Further, if the underlying data type is known,
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``pwncat`` can interact with the raw data (such as the SUID binaries path or owner UID).
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Viewing Facts
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-------------
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The ``--show/-s`` argument to the ``enum`` command provides a way to view facts about
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the victim host. If a specific fact type is requested, ``pwncat`` will first look for
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facts of this type in the fact table of the database. Next, ``pwncat`` will check for
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enumerator modules which provide the given type and run any which are available.
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The default type of data is ``all``. This can take some time as ``pwncat`` has multiple
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types of enumerator modules implemented. There is also a ``--quick`` option which will
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only select a few useful and fast enumeration types which may be useful. Further, you
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can pass the ``--type/-t`` parameter with the name of an enumeration type you would
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like. Enumeration types are dynamic, but a known set of types at runtime can be found
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by tab-completing the ``--type`` argument.
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.. code-block:: bash
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:caption: Requesting quick enumeration facts
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$ pwncat -C data/pwncatrc -c -H 1.1.1.1 -p 4444
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[+] connection to 1.1.1.1:4444 established
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[+] setting terminal prompt
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[+] running in /bin/sh
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[+] terminal state synchronized
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[+] pwncat is ready 🐈
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(remote) bob@pwncat-centos-testing:/root$
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[+] local terminal restored
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(local) pwncat$ enum --show --quick
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SYSTEM.HOSTNAME Facts by pwncat.enumerate.system
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pwncat-centos-testing
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SYSTEM.ARCH Facts by pwncat.enumerate.system
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Running on a x86_64 processor
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SYSTEM.DISTRO Facts by pwncat.enumerate.system
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Running CentOS Linux 8 (Core) (centos), Version 8, Build ID None.
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SYSTEM.KERNEL.VERSION Facts by pwncat.enumerate.system
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Running Linux Kernel 4.18.0-147.3.1.el8_1.x86_64
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SYSTEM.NETWORK.HOSTS Facts by pwncat.enumerate.system
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127.0.0.1 -> ['pwncat-centos-testing', 'pwncat-centos-testing']
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::1 -> ['pwncat-centos-testing', 'pwncat-centos-testing']
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10.0.0.5 -> ['internal_testing.company.com']
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SYSTEM.NETWORK Facts by pwncat.enumerate.system
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Interface lo w/ address 127.0.0.1/8
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Interface lo w/ address ::1/128
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Interface eth0 w/ address 134.122.23.33/20
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Interface eth0 w/ address 10.10.0.6/16
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Interface eth0 w/ address fe80::d877:e2ff:fe42:3169/64
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WRITABLE_PATH Facts by pwncat.enumerate.writable_path
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/home/bob/.local/bin
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/home/bob/bin
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(local) pwncat$
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Generating a Host Report
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------------------------
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The ``enum`` command is capable of generating a human-readable report in the form of
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a Markdown document. Specifying the ``--report/-r`` argument enables this mode. When
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generating a report, you can select specific fact types. ``pwncat`` will enumerate
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all information for the remote host and output a comprehensive organized markdown
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report to the specified file.
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.. code-block:: bash
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:caption: Generating the Report
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(local) pwncat$ enum --report ./report.md
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[+] enumeration report written to ./report.md
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(local) pwncat$ |