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121 lines
5.2 KiB
ReStructuredText
121 lines
5.2 KiB
ReStructuredText
.. _gameplay_hacking:
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Hacking
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=======
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In the year 2077, currency has become digital and decentralized.
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People and corporations store their money on servers. By hacking
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these servers, you can steal their money and gain experience.
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Gaining Root Access
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^^^^^^^^^^^^^^^^^^^
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The first step to hacking a server is to gain root access to that server.
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This can be done using the NUKE virus (NUKE.exe). You start the
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game with a copy of the NUKE virus on your home computer. The
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NUKE virus attacks the target server's open ports using buffer
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overflow exploits. When successful, you are granted root
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administrative access to the machine.
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In order for the NUKE virus to succeed, the target server
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needs to have enough open ports. Some servers have no
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security and will not need any ports opened. Some will have very high
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security and will need many ports opened. In order to open ports on
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another server, you will need to run programs that attack the server
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to open specific ports. These programs can be coded once your hacking
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skill gets high enough, or they can be purchased if you can find a seller.
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**There are two ways to execute port-opening programs and the NUKE virus:**
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1. Connect to the target server through the :ref:`terminal` and use the
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:ref:`run_terminal_command` Terminal command::
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$ run [programName]
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2. Use a :ref:`Netscript Function <netscriptfunctions>`:
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* :js:func:`nuke`
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* :js:func:`brutessh`
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* :js:func:`ftpcrack`
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* :js:func:`relaysmtp`
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* :js:func:`httpworm`
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* :js:func:`sqlinject`
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**There are two ways to determine how many ports need to be opened
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on a server in order to successfully NUKE it:**
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1. Connect to that server through the :ref:`terminal` and use the
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:ref:`analyze_terminal_command` command
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2. Use the :js:func:`getServerNumPortsRequired` Netscript function
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Once you have enough ports opened on a server and have ran the NUKE virus
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to gain root access, you will be able to hack it.
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.. _gameplay_hacking_generalhackingmechanics:
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General Hacking Mechanics
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^^^^^^^^^^^^^^^^^^^^^^^^^
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When you execute the hack command, either manually through the terminal
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or automatically through a script, you attempt to hack the server.
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This action takes time. The more advanced a server's security is,
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the more time it will take. Your hacking skill level also affects
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the hacking time, with a higher hacking skill leading to shorter
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hacking times. Also, running the hack command manually through terminal
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is faster than hacking from a script.
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Your attempt to hack a server will not always succeed. The chance you
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have to successfully hack a server is also determined by the server's
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security and your hacking skill level. Even if your hacking attempt
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is unsuccessful, you will still gain experience points.
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When you successfully hack a server. You steal a certain percentage
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of that server's total money. This percentage is, once again, determined by the
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server's security and your hacking skill level. The amount of money
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on a server is not limitless. So, if you constantly hack a server
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and deplete its money, then you will encounter diminishing returns
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in your hacking (since you are only hacking a certain percentage).
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You can increase the amount of money on a server using a script and
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the :js:func:`grow` function in Netscript.
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.. _gameplay_hacking_serversecurity:
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Server Security
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^^^^^^^^^^^^^^^
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Each server has a security level, typically between 1 and 100.
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A higher number means the server has stronger security. It is
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possible for a server to have a security of level 100 or higher, in
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which case hacking that server will become impossible (0% chance for
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hack to succeed).
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As mentioned above, a server's security level is an important factor
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to consider when hacking. You can check a server's security level
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using the :ref:`analyze_terminal_command` Terminal command. You can
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also check a server's security in
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a script, using the :js:func:`getServerSecurityLevel` Netscript
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Function. See the Netscript documentation for more details.
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Whenever a server is hacked manually or through a script, its security
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level increases by a small amount. Calling the :js:func:`grow` function in a
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script will also increase security level of the target server. These
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actions will make it harder for you to hack the server, and decrease
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the amount of money you can steal. You can lower a server's security
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level in a script using the :js:func:`weaken` function in Netscript. See
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the Netscript documentation for more details
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A server has a minimum security level that is equal to one third of its
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starting security, rounded to the nearest integer. To be more precise::
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server.minSecurityLevel = Math.max(1, Math.round(server.startingSecurityLevel / 3))
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This means that a server's security level will not fall below this
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value if you are trying to weaken() it.
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Backdoors
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^^^^^^^^^
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Servers that can be hacked can also have backdoors installed. These backdoors
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will provide you with a benefit; the services may be cheaper, penalties may
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be reduced or there may be other results. Honeypots exist and will let factions
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know when you have succeeded at backdooring their system. Once you have a
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backdoor installed, you can connect to that server directly.
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When you visit a location in the city and see that the name is partially scrambled,
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this indicates that you have backdoored the server related to the location.
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