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71 lines
3.4 KiB
ReStructuredText
71 lines
3.4 KiB
ReStructuredText
Tamper
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======
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``pwncat`` tracks modifications of the remote system through the ``tamper`` module. Programmatically, ``pwncat``
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interfaces with the tamper subsystem through the ``pwncat.victim.tamper`` object. This allows generic modifications
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to be registered with a method to revert the change. Built-in capabilities like ``privesc`` and ``persist`` will
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any modifications made to the remote system with the tamper module. This includes but is not limited to created users,
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created files, modified files, and removed files.
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Listing Tampers
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---------------
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To view a list of current remote modifications, use the ``tamper`` command. The default action is to list all registered
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tampers.
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.. code-block:: bash
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(local) pwncat$ tamper
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0 - Created file /tmp/tmp.U2KlLIG5dW
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1 - Modified /home/george/.ssh/authorized_keys
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2 - Created file /tmp/tmp.tnJfd2BaCd
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3 - Created file /tmp/tmp.PAXFRgfYzW
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4 - Modified /home/george/.ssh/authorized_keys
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5 - Created file /tmp/tmp.xi5Evy4ZPF
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6 - Created file /tmp/tmp.05AwnolMNL
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7 - Modified /home/george/.ssh/authorized_keys
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8 - Created file /tmp/tmp.6LwcrXSdWE
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9 - Persistence: passwd as system (local)
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Reverting Tampers
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-----------------
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Tampers can be reverted to their original state with the ``--revert/-r`` flag of the ``tamper`` command. In this mode,
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can either specify ``--all/-a`` or ``--tamper/-t ID`` to revert all tampers or a specific tamper ID. In some cases, the
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modifications were made as a different user and therefore cannot be removed currently. In this case, the tamper is left
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in the list and can be reverted later once you have the required privileges:
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.. code-block:: bash
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(local) pwncat$ tamper -r -a
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[\] reverting tamper: Modified /home/george/.ssh/authorized_keys
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[?] Modified /home/george/.ssh/authorized_keys: revert failed: No such file or directory: '/home/george/.ssh/authorized_keys'
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[/] reverting tamper: Created file /tmp/tmp.tnJfd2BaCd
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[?] Created file /tmp/tmp.tnJfd2BaCd: revert failed: /tmp/tmp.tnJfd2BaCd: unable to remove file
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[\] reverting tamper: Modified /home/george/.ssh/authorized_keys
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[?] Modified /home/george/.ssh/authorized_keys: revert failed: No such file or directory: '/home/george/.ssh/authorized_keys'
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[/] reverting tamper: Created file /tmp/tmp.xi5Evy4ZPF
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[?] Created file /tmp/tmp.xi5Evy4ZPF: revert failed: /tmp/tmp.xi5Evy4ZPF: unable to remove file
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[\] reverting tamper: Modified /home/george/.ssh/authorized_keys
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[?] Modified /home/george/.ssh/authorized_keys: revert failed: No such file or directory: '/home/george/.ssh/authorized_keys'
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[/] reverting tamper: Created file /tmp/tmp.6LwcrXSdWE
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[?] Created file /tmp/tmp.6LwcrXSdWE: revert failed: /tmp/tmp.6LwcrXSdWE: unable to remove file
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[-] reverting tamper: Persistence: passwd as system (local)
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[?] Persistence: passwd as system (local): revert failed: Permission denied: '/etc/passwd'
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[+] tampers reverted!
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After utilizing our ``passwd`` persistence to gain root access, we can successfully remove all tampers:
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.. code-block:: bash
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(local) pwncat$ privesc -e
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[+] privilege escalation succeeded using:
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⮡ persistence - passwd as system (local)
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[+] pwncat is ready 🐈
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(remote) root@pwncat-centos-testing:~#
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[+] local terminal restored
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(local) pwncat$ tamper -r -a
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[+] tampers reverted!
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(local) pwncat$ tamper
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(local) pwncat$ |