mirror of
https://github.com/bitburner-official/bitburner-src.git
synced 2024-12-24 07:02:26 +01:00
121 lines
5.2 KiB
ReStructuredText
121 lines
5.2 KiB
ReStructuredText
.. _gameplay_hacking:
|
|
|
|
Hacking
|
|
=======
|
|
|
|
In the year 2077, currency has become digital and decentralized.
|
|
People and corporations store their money on servers. By hacking
|
|
these servers, you can steal their money and gain experience.
|
|
|
|
Gaining Root Access
|
|
^^^^^^^^^^^^^^^^^^^
|
|
The first step to hacking a server is to gain root access to that server.
|
|
This can be done using the NUKE virus (NUKE.exe). You start the
|
|
game with a copy of the NUKE virus on your home computer. The
|
|
NUKE virus attacks the target server's open ports using buffer
|
|
overflow exploits. When successful, you are granted root
|
|
administrative access to the machine.
|
|
|
|
In order for the NUKE virus to succeed, the target server
|
|
needs to have enough open ports. Some servers have no
|
|
security and will not need any ports opened. Some will have very high
|
|
security and will need many ports opened. In order to open ports on
|
|
another server, you will need to run programs that attack the server
|
|
to open specific ports. These programs can be coded once your hacking
|
|
skill gets high enough, or they can be purchased if you can find a seller.
|
|
|
|
**There are two ways to execute port-opening programs and the NUKE virus:**
|
|
|
|
1. Connect to the target server through the :ref:`terminal` and use the
|
|
:ref:`run_terminal_command` Terminal command::
|
|
|
|
$ run [programName]
|
|
2. Use a :ref:`Netscript Function <netscriptfunctions>`:
|
|
|
|
* :js:func:`nuke`
|
|
* :js:func:`brutessh`
|
|
* :js:func:`ftpcrack`
|
|
* :js:func:`relaysmtp`
|
|
* :js:func:`httpworm`
|
|
* :js:func:`sqlinject`
|
|
|
|
**There are two ways to determine how many ports need to be opened
|
|
on a server in order to successfully NUKE it:**
|
|
|
|
1. Connect to that server through the :ref:`terminal` and use the
|
|
:ref:`analyze_terminal_command` command
|
|
2. Use the :js:func:`getServerNumPortsRequired` Netscript function
|
|
|
|
Once you have enough ports opened on a server and have ran the NUKE virus
|
|
to gain root access, you will be able to hack it.
|
|
|
|
.. _gameplay_hacking_generalhackingmechanics:
|
|
|
|
General Hacking Mechanics
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
When you execute the hack command, either manually through the terminal
|
|
or automatically through a script, you attempt to hack the server.
|
|
This action takes time. The more advanced a server's security is,
|
|
the more time it will take. Your hacking skill level also affects
|
|
the hacking time, with a higher hacking skill leading to shorter
|
|
hacking times. Also, running the hack command manually through terminal
|
|
is faster than hacking from a script.
|
|
|
|
Your attempt to hack a server will not always succeed. The chance you
|
|
have to successfully hack a server is also determined by the server's
|
|
security and your hacking skill level. Even if your hacking attempt
|
|
is unsuccessful, you will still gain experience points.
|
|
|
|
When you successfully hack a server. You steal a certain percentage
|
|
of that server's total money. This percentage is, once again, determined by the
|
|
server's security and your hacking skill level. The amount of money
|
|
on a server is not limitless. So, if you constantly hack a server
|
|
and deplete its money, then you will encounter diminishing returns
|
|
in your hacking (since you are only hacking a certain percentage).
|
|
You can increase the amount of money on a server using a script and
|
|
the :js:func:`grow` function in Netscript.
|
|
|
|
.. _gameplay_hacking_serversecurity:
|
|
|
|
Server Security
|
|
^^^^^^^^^^^^^^^
|
|
Each server has a security level, typically between 1 and 100.
|
|
A higher number means the server has stronger security. It is
|
|
possible for a server to have a security of level 100 or higher, in
|
|
which case hacking that server will become impossible (0% chance for
|
|
hack to succeed).
|
|
|
|
As mentioned above, a server's security level is an important factor
|
|
to consider when hacking. You can check a server's security level
|
|
using the :ref:`analyze_terminal_command` Terminal command. You can
|
|
also check a server's security in
|
|
a script, using the :js:func:`getServerSecurityLevel` Netscript
|
|
Function. See the Netscript documentation for more details.
|
|
|
|
Whenever a server is hacked manually or through a script, its security
|
|
level increases by a small amount. Calling the :js:func:`grow` function in a
|
|
script will also increase security level of the target server. These
|
|
actions will make it harder for you to hack the server, and decrease
|
|
the amount of money you can steal. You can lower a server's security
|
|
level in a script using the :js:func:`weaken` function in Netscript. See
|
|
the Netscript documentation for more details
|
|
|
|
A server has a minimum security level that is equal to one third of its
|
|
starting security, rounded to the nearest integer. To be more precise::
|
|
|
|
server.minSecurityLevel = Math.max(1, Math.round(server.startingSecurityLevel / 3))
|
|
|
|
This means that a server's security level will not fall below this
|
|
value if you are trying to weaken() it.
|
|
|
|
Backdoors
|
|
^^^^^^^^^
|
|
Servers that can be hacked can also have backdoors installed. These backdoors
|
|
will provide you with a benefit; the services may be cheaper, penalties may
|
|
be reduced or there may be other results. Honeypots exist and will let factions
|
|
know when you have succeeded at backdooring their system. Once you have a
|
|
backdoor installed, you can connect to that server directly.
|
|
|
|
When you visit a location in the city and see that the name is partially scrambled,
|
|
this indicates that you have backdoored the server related to the location.
|