fallout-term/fallout_hack.py

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import curses
import random
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import time
import os
from fallout_functions import slowWrite, upperInput, addSound
################## text strings ######################
HEADER_TEXT = 'ROBCO INDUSTRIES (TM) TERMLINK PROTOCOL'
################## global "constants" ################
# number of characters for hex digits and spaces
CONST_CHARS = 16
# position of the attempt squares
SQUARE_X = 19
SQUARE_Y = 3
LOGIN_ATTEMPTS = 4
HEADER_LINES = 5
# amount of time to pause after correct password input
LOGIN_PAUSE = 3
# starting number for hex generation
START_HEX = 0xf650
# list of possible symbols for password hiding
SYMBOLS = '!@#$%^*()_-+={}[]|\\:;\'",<>./?'
################## functions #########################
def generateHex(n):
"""
generates n numbers starting at START_HEX and increasing by 12 each time
"""
num = START_HEX
list = []
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for i in range(n):
list.append(num)
num += 12
return list
def getSymbols(n):
"""
return n random symbols
"""
count = len(SYMBOLS)
result = ""
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for i in range(int(n)):
result += SYMBOLS[random.randint(0, count - 1)]
return result
def getPasswords():
"""
Returns an array of strings to be used as the password and the decoys
"""
groups = []
# script file / password file location
__location__ = os.path.realpath(os.path.join(os.getcwd(),
os.path.dirname(__file__)))
# read from passwords.txt
with open(os.path.join(__location__, "passwords.txt")) as pwfile:
for line in pwfile:
if not line.strip():
groups.append([])
elif len(groups) > 0:
groups[len(groups) - 1].append(line[:-1])
passwords = groups[random.randint(0, len(groups) - 1)]
random.shuffle(passwords)
return passwords
def getFiller(length, passwords):
"""
Return a string of symbols with potential passwords mixed in
length - the length of the string to create
passwords - an array of passwords to hide in the symbols
"""
filler = getSymbols(length)
# add the passwords to the symbols
pwdLen = len(passwords[0])
pwdCount = len(passwords)
i = 0
for pwd in passwords:
# skip a distance based on total size to cover then place a password
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maxSkip = int(length / pwdCount - pwdLen)
i += random.randint(maxSkip - 2, maxSkip)
filler = filler[:i] + pwd + filler[i + pwdLen:]
i += pwdLen
return filler
def initScreen(scr):
"""
Fill the screen to prepare for password entry
scr - curses window returned from curses.initscr()
"""
size = scr.getmaxyx()
height = size[0]
width = size[1]
fillerHeight = height - HEADER_LINES
hexes = generateHex(fillerHeight * 2)
hexCol1 = hexes[:fillerHeight]
hexCol2 = hexes[fillerHeight:]
# generate the symbols and passwords
fillerLength = width / 2 * fillerHeight
passwords = getPasswords()
filler = getFiller(fillerLength, passwords)
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fillerCol1, fillerCol2 = filler[0:len(filler)//2], filler[len(filler)//2:]
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#print(fillerCol1)
#time.sleep(15)
#print(fillerCol2)
#time.sleep(15)
# each column of symbols and passwords should be 1/4 of the screen
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fillerWidth = int(width / 4)
# print the header stuff
slowWrite(scr, HEADER_TEXT)
slowWrite(scr, '\nENTER PASSWORD NOW\n\n')
slowWrite(scr, str(LOGIN_ATTEMPTS) + ' ATTEMPT(S) LEFT: ')
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for i in range(LOGIN_ATTEMPTS):
scr.addch(curses.ACS_BLOCK)
slowWrite(scr, ' ')
slowWrite(scr, '\n\n')
# print the hex and filler
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for i in range(fillerHeight):
slowWrite(scr, "0x%X %s" % (hexCol1[i], fillerCol1[i * fillerWidth: (i + 1) * fillerWidth]), 1, silent = True)
if i < fillerHeight - 1:
scr.addstr('\n')
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for i in range(fillerHeight):
scr.move(HEADER_LINES + i, int(CONST_CHARS / 2 + fillerWidth))
slowWrite(scr, '0x%X %s' % (hexCol2[i], fillerCol2[i * fillerWidth: (i + 1) * fillerWidth]), 1, silent = True)
scr.refresh()
return passwords
def moveInput(scr, inputPad):
"""
moves the input pad to display all text then a blank line then the cursor
"""
size = scr.getmaxyx()
height = size[0]
width = size[1]
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inputPad.addstr('\n>')
# cursor position relative to inputPad
cursorPos = inputPad.getyx()
inputPad.refresh(0, 0,
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int(height - cursorPos[0] - 1),
int(width / 2 + CONST_CHARS),
int(height - 1),
int(width - 1))
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def userInput(scr, passwords):
"""
let the user attempt to crack the password
scr - curses window returned from curses.initscr()
passwords - array of passwords hidden in the symbols
"""
size = scr.getmaxyx()
height = size[0]
width = size[1]
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# set up a pad for user input
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inputPad = curses.newpad(height, int(width / 2 + CONST_CHARS))
attempts = LOGIN_ATTEMPTS
# randomly pick a password from the list
pwd = passwords[random.randint(0, len(passwords) - 1)]
curses.noecho()
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while attempts > 0:
# move the curser to the correct spot for typing
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scr.move(int(height - 1), int(width / 2 + CONST_CHARS + 1))
# scroll user input up as the user tries passwords
moveInput(scr, inputPad)
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guess = upperInput(scr, False, False)
cursorPos = inputPad.getyx()
# write under the last line of text
inputPad.move(cursorPos[0] - 1, cursorPos[1] - 1)
inputPad.addstr('>' + guess.upper() + '\n')
# user got password right
if guess.upper() == pwd.upper():
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addSound("correctpass")
inputPad.addstr('>Exact match!\n')
inputPad.addstr('>Please wait\n')
inputPad.addstr('>while system\n')
inputPad.addstr('>is accessed.\n')
moveInput(scr, inputPad)
time.sleep(LOGIN_PAUSE)
return pwd
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# wrong password
else:
pwdLen = len(pwd)
matched = 0
try:
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for i in range(pwdLen):
if pwd[i].upper() == guess[i].upper():
matched += 1
except IndexError:
pass # user did not enter enough letters
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addSound("wrongpass")
inputPad.addstr('>Entry denied\n')
inputPad.addstr('>' + str(matched) + '/' + str(pwdLen) +
' correct.\n')
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attempts -= 1
# show remaining attempts
scr.move(SQUARE_Y, 0)
scr.addstr(str(attempts))
scr.move(SQUARE_Y, SQUARE_X)
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for i in range(LOGIN_ATTEMPTS):
if i < attempts:
scr.addch(curses.ACS_BLOCK)
else:
scr.addstr(' ')
scr.addstr(' ')
# Out of attempts
return None
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def runLogin(scr):
"""
Start the login portion of the terminal
Returns the password if the user correctly guesses it
"""
curses.use_default_colors()
size = scr.getmaxyx()
width = size[1]
height = size[0]
random.seed()
# set screen to initial position
scr.erase()
scr.move(0, 0)
passwords = initScreen(scr)
return userInput(scr, passwords)
def beginLogin():
"""
Initialize curses and start the login process
Returns the password if the user correctly guesses it
"""
return curses.wrapper(runLogin)