1 files changed, 132 insertions, 0 deletions
diff --git a/scripts/cassandra-brute.nse b/scripts/cassandra-brute.nse
new file mode 100644
index 0000000..8363c65
--- /dev/null
+++ b/scripts/cassandra-brute.nse
@@ -0,0 +1,132 @@
+local brute = require "brute"
+local creds = require "creds"
+local nmap = require "nmap"
+local shortport = require "shortport"
+local stdnse = require "stdnse"
+local string = require "string"
+local cassandra = require "cassandra"
+
+description = [[
+Performs brute force password auditing against the Cassandra database.
+
+For more information about Cassandra, see:
+http://cassandra.apache.org/
+]]
+
+---
+-- @usage
+-- nmap -p 9160 <ip> --script=cassandra-brute
+--
+-- @output
+-- PORT     STATE SERVICE VERSION
+-- 9160/tcp open  apani1?
+-- | cassandra-brute:
+-- |   Accounts
+-- |     admin:lover - Valid credentials
+-- |   Statistics
+-- |_    Performed 4581 guesses in 1 seconds, average tps: 4581
+--
+
+author = "Vlatko Kosturjak"
+license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
+categories = {"intrusive", "brute"}
+
+portrule = shortport.port_or_service({9160}, {"cassandra"})
+
+Driver = {
+
+  new = function(self, host, port, options)
+    local o = { host = host, port = port, socket = brute.new_socket() }
+    setmetatable(o, self)
+    self.__index = self
+    return o
+  end,
+
+  connect = function(self)
+    return self.socket:connect(self.host, self.port)
+  end,
+
+  -- bit faster login function than in cassandra library (no protocol error checks)
+  login = function(self, username, password)
+    local response, magic, size, _
+    local loginstr = cassandra.loginstr (username, password)
+
+    local status, err = self.socket:send(string.pack(">I4", #loginstr))
+    local combo = username..":"..password
+    if ( not(status) ) then
+      local err = brute.Error:new( "couldn't send length:"..combo )
+      err:setAbort( true )
+      return false, err
+    end
+
+    status, err = self.socket:send(loginstr)
+    if ( not(status) ) then
+      local err = brute.Error:new( "couldn't send login packet: "..combo )
+      err:setAbort( true )
+      return false, err
+    end
+
+    local status, response = self.socket:receive_bytes(22)
+    if ( not(status) ) then
+      local err = brute.Error:new( "couldn't receive login reply size: "..combo )
+      err:setAbort( true )
+      return false, err
+    end
+
+    local size = string.unpack(">I4", response, 1)
+
+    magic = string.sub(response,18,22)
+
+    if (magic == cassandra.LOGINSUCC) then
+      stdnse.debug3("Account SUCCESS: "..combo)
+      return true, creds.Account:new(username, password, creds.State.VALID)
+    elseif (magic == cassandra.LOGINFAIL) then
+      stdnse.debug3("Account FAIL: "..combo)
+      return false, brute.Error:new( "Incorrect password" )
+    elseif (magic == cassandra.LOGINACC) then
+      stdnse.debug3("Account VALID, but wrong password: "..combo)
+      return false, brute.Error:new( "Good user, bad password" )
+    else
+      stdnse.debug3("Unrecognized packet for "..combo)
+      stdnse.debug3("packet hex: %s", stdnse.tohex(response) )
+      stdnse.debug3("size packet hex: %s", stdnse.tohex(size) )
+      stdnse.debug3("magic packet hex: %s", stdnse.tohex(magic) )
+      local err = brute.Error:new( response )
+      err:setRetry( true )
+      return false, err
+    end
+  end,
+
+  disconnect = function(self)
+    return self.socket:close()
+  end,
+
+}
+
+local function noAuth(host, port)
+  local socket = nmap.new_socket()
+  local status, result = socket:connect(host, port)
+
+  local stat,err = cassandra.login (socket,"default","")
+  socket:close()
+  if (stat) then
+    return true
+  else
+    return false
+  end
+end
+
+action = function(host, port)
+
+  if ( noAuth(host, port) ) then
+    return "Any username and password would do, 'default' was used to test."
+  end
+
+  local engine = brute.Engine:new(Driver, host, port )
+
+  engine.options.script_name = SCRIPT_NAME
+  engine.options.firstonly = true
+  local status, result = engine:start()
+
+  return result
+end