core

Documentation

Overview

core - the "core" package is used to organize all primary libraries and utilities that are made use of across several aspects of the application.

This can include anything from custom data structures, to colors for text output.

Index

• Variables
• func AssignWolfBroadcast(username string, rhost string, response string)
• func AssignWolfResponse(username string, rhost string, response string)
• func BroadcastSession(session string)
• func BroadcastWolfPackChat(response string)
• func ChatLog(data string) error
• func ClientLoadExtendedFunctions(activeSession int) []byte
• func DownloadFile(filename string, fileb64 string)
• func ExecuteConnection(rhost string, rport int, protocol string, path string, commandQuery string, ...) (string, error)
• func GeneratePSK() string
• func GetFirstUsePSK() (response string, psk string, instructions string, help string)
• func KillListener(id int) (responseSuccess string, responseFail string)
• func LoadExtendedFunctions(sessionApp *grumble.App, activeSession int)
• func LogData(data string) error
• func ManagePSK(psk string, isRandom bool, operator string) (response string, currentPSK string, instruction string)
• func QueueImplantCommand(sessionID int, cmd string, operator string)
• func RegisterSession(sessionID int, protocol string, implant Implant, rhost string, rport int, ...)
• func SessionCheckIn(sessionID int)
• func SessionExists(session int) bool
• func SessionStatusUpdate(sessionID int, status string)
• func ShowListeners() map[string]ListenerStrings
• func ShowSessions() map[string]SessionStrings
• func StartConnector(id int, rhost string, rport int, protocol string, requestType string, ...) (string, error)
• func UpdateImplant(sessionID int, updateInterval float64, arch string, ...)
• func UpdateWolf(username string, rhost string)
• func UploadFile(file string) string
• func WebShellStatus(id int, rhost string, rport int, protocol string, requestType string, ...) (bool, error)
• type Commands
• type Implant
  • func RegisterImplant(arch string, updateInterval float64, functions map[string]interface{}, ...) Implant
• type Listener
• type ListenerStrings
• type ManageResponse
• type Session
• type SessionStrings
• type StartResponse
• type TCPData
• type Wolf

Variables

var ActiveSession = -1

ActiveSession = global value to keep track of the current active session. Since session "0" is a valid session, this starts at "-1" to determine if no session is active.

var DidDisplayPsk = false

DidDisplayPsk - a boolean to check if the pre-generated PSK was already given to the user so it is not printed each time

var ErrorColorBold = color.New(color.FgRed).Add(color.Bold)

ErrorColorBold - bold red color useful for error messages

var ErrorColorBoldIns = color.New(color.FgRed).Add(color.Bold).SprintFunc()

ErrorColorBoldIns - insert variant for variables, bold red color useful for error messages

var ErrorColorUnderline = color.New(color.FgRed).Add(color.Underline)

ErrorColorUnderline - underlined bold red color useful for strong error messages

var GreenColor = color.New(color.FgGreen)

GreenColor - green color for text output

var GreenColorIns = color.New(color.FgGreen).SprintFunc()

GreenColorIns - insert variant for variables, green color for text output

var Listeners = make(map[int]Listener)

Listeners - a map of Listeners. This is used to manage listeners that are created by the user. The map structure makes it easy to search, add, modify, and delete a large amount of Listeners.

var MagentaColor = color.New(color.FgMagenta)

MagentaColor - magenta color for text output

var MagentaColorBold = color.New(color.FgMagenta).Add(color.Bold)

MagentaColorBold - bold magenta color for text output

var PSK string

PSK - global PSK for listeners to manage and set the server PSK

var PersistenceMode bool

PersistenceMode - a boolean to check to see if persistence mode is enabled/disabled

var RedColor = color.New(color.FgRed)

RedColor - red color for text output

var RedColorIns = color.New(color.FgRed).SprintFunc()

RedColorIns - insert variant for variables, red color for text output

var SessionID int = 0

SessionID - Global SessionID counter. Session IDs are unique and auto-increment on creation. This value is kept track of throughout a Session's life cycle so it can be incremented/decremented automatically wherever appropriate.

var Sessions = make(map[int]Session)

Sessions - map of all sessions. This is used to manage sessions that are registered successfully by implants. The map structure makes it easy to search, add, modify, and delete a large amount of Sessions.

var SuccessColorBold = color.New(color.FgGreen).Add(color.Bold)

SuccessColorBold - bold green color useful for success messages

var WarningColorBold = color.New(color.FgYellow).Add(color.Bold)

WarningColorBold - bold yellow color useful for warning messages

var Wolves = make(map[string]Wolf)

Wolves - map of all operators (wolves). This is used to manage wolf pack server users that have been generated. The map structure makes it easy to search, add, modify, and delete a large amount of Wolves.

var ZeroedUUID, _ = uuid.Parse("00000000-0000-0000-0000-000000000000")

ZeroedUUID - zeroed global used to clear UUIDs wherever applicable

Functions

func AssignWolfBroadcast

func AssignWolfBroadcast(username string, rhost string, response string)

AssignWolfBroadcast - this function takes in a username and rhost to keep track of the user being assigned the broadcast message. The response parameter is then updated and linked to a wolf which will be returned by the WolfPack Server.

func AssignWolfResponse

func AssignWolfResponse(username string, rhost string, response string)

AssignWolfResponse - this function takes in a username and rhost to keep track of the user being assigned the response. The response parameter is then updated and linked to a wolf which will be returned by the WolfPack Server.

func BroadcastSession

func BroadcastSession(session string)

BroadcastSession - Broadcast a message that a new session has been established

func BroadcastWolfPackChat

func BroadcastWolfPackChat(response string)

BroadcastWolfPackChat - this function takes in a chat message response and broadcasts it to all wolves, they will only receive it if making a request from the Chat CLI. The response parameter is then updated and linked to each wolf which will be returned by the WolfPack Server.

func ChatLog

func ChatLog(data string) error

func ClientLoadExtendedFunctions

func ClientLoadExtendedFunctions(activeSession int) []byte

ClientLoadExtendedFunctions - Loads the functions registered by an implant and returns those functions for the lupo client to load

func DownloadFile

func DownloadFile(filename string, fileb64 string)

DownloadFile - Reads a base64 encoded string and writes it out to a local file

func ExecuteConnection

func ExecuteConnection(rhost string, rport int, protocol string, path string, commandQuery string, command string, query string, requestType string, filename string, file string) (string, error)

ExecuteConnection - function to handle binding HTTP/HTTPS connections from connector sessions

func GeneratePSK

func GeneratePSK() string

GeneratePSK - Generates a random 32 character string, encodes it with SHA256 as a PSK that is set by default on startup unless the user specifies a static PSK

func GetFirstUsePSK

func GetFirstUsePSK() (response string, psk string, instructions string, help string)

func KillListener

func KillListener(id int) (responseSuccess string, responseFail string)

KillListener - kills a listener with the specified id and returns the response

func LoadExtendedFunctions

func LoadExtendedFunctions(sessionApp *grumble.App, activeSession int)

LoadExtendedFunctions - Loads the functions registered by an implant

func LogData

func LogData(data string) error

LogData - wrapper function to use golang's built in logger and append all operational data to a central log file

func ManagePSK

func ManagePSK(psk string, isRandom bool, operator string) (response string, currentPSK string, instruction string)

func QueueImplantCommand

func QueueImplantCommand(sessionID int, cmd string, operator string)

QueueImplantCommand - inserts a command to the command queue to be executed by a specified implant on the next check in

func RegisterSession

func RegisterSession(sessionID int, protocol string, implant Implant, rhost string, rport int, command string, query string, requestType string, shellpath string)

RegisterSession - Registers a session and adds it to the session map and increments the global SessionID value

func SessionCheckIn

func SessionCheckIn(sessionID int)

SessionCheckIn - Updates the Last Check In anytime a verified session calls back

func SessionExists

func SessionExists(session int) bool

SessionExists - returns if a session exists or not

func SessionStatusUpdate

func SessionStatusUpdate(sessionID int, status string)

SessionStatusUpdate - Updates the current status of a session

func ShowListeners

func ShowListeners() map[string]ListenerStrings

ShowListeners - returns a string map of Listeners and their details

func ShowSessions

func ShowSessions() map[string]SessionStrings

ShowSessions - returns a map of Sessions and their details

func StartConnector

func StartConnector(id int, rhost string, rport int, protocol string, requestType string, command string, query string, connectString string, shellpath string) (string, error)

StartConnector - Creates a connector based on parameters generated via the "connector start" subcommand.

Based on the parameters provided, this function will create a new connector structure and save it to the connectors map.

Each structure will contain either an HTTP(S) or TCP server instance which is used to start the actual connectors.

HTTP Servers make use of an anonymous goroutine initially to start the connector, but all core handling functions are passed off to the HTTPServerHanlder() function.

TCP Servers are started by executing a StartTCPServer function via goroutine. To maintain concurrency a subsequent goroutine is executed to handle the data for all TCP connections via TCPServerHandler() function.

All connectors are concurrent and support multiple simultaneous connections.

func UpdateImplant

func UpdateImplant(sessionID int, updateInterval float64, arch string, functions map[string]interface{})

UpdateImplant - function to update common implant fields on a given check in cycle such as the update interval, custom functions, and the command queue.

func UpdateWolf

func UpdateWolf(username string, rhost string)

UpdateWolf - updates the properties of an individual wolfpack user for processing elsewhere in the application. Updates the current command in the queue and the remote host connection value.

func UploadFile

func UploadFile(file string) string

UploadFile - Reads a file to be uploaded and converts it to base64 to pass to the server as a response for the session

func WebShellStatus

func WebShellStatus(id int, rhost string, rport int, protocol string, requestType string, command string, query string, connectString string, shellpath string) (bool, error)

WebShellStatus - check in function called on show to see if the web shell still response

Types

type Commands

type Commands struct {
	Command  string
	Operator string
}

Commands - defines the structure of Commands

Command - the actual command to be executed

Operator - an operator or "wolf" that is executing the specific command

type Implant

type Implant struct {
	ID       uuid.UUID
	Arch     string
	Commands []Commands
	Update   float64

	Functions map[string]interface{}
	// contains filtered or unexported fields
}

Implant - defines an implant structure composed of:

id - unique identifier that is autoincremented on creation of a new implant

Arch - string for storing the Architecture of an implant's host system. This can be anything and is provided by the implant, but is expected to be something that identifies the host operating system and architecture.

Commands - a slice of commands that is populated and used as a queue based on interaction from the session CLI.

Update - an update interval in seconds that implants provide to tell the server how often it intends to check in. This value is used to determine if a session may have been killed.

response - populated by a data payload, usually the output of execute commands on the implant. Once an implant executes a command it will be retrieved, usually through a data parameter, and populated into the implant structure it is associated with.

Functions - a map of additional function names that can be registered to a given session. These contain a JSON string of {"name":"description"} that are loaded into the CLI if successfully registered via this property. Users can then execute these as unique session sub-commands. It is assumed that the implant has implemented these functions and will execute reserved actions once the registered keyword is received.

func RegisterImplant

func RegisterImplant(arch string, updateInterval float64, functions map[string]interface{}, oldUUID string) Implant

RegisterImplant - function to register a new implant and increment the ImplantID

type Listener

type Listener struct {
	ID           int
	Lhost        string
	Lport        int
	Protocol     string
	HTTPInstance *http.Server
	TCPInstance  net.Listener
	CryptoPSK    string
}

Listener - defines a listener structure composed of:

id - unique identifier that is autoincremented on creation of a new listener

lhost - the "listening" host address. This tells a listener what interface to listen on based on the address it is tied to.

lport - the "listening" port. This tells a listener what port the lhost of the listener should open to receive connections on.

protocol - the protocol to use when listening for incoming connections. Currenlty supports HTTP(S) and TCP.

httpInstance - a pointer to an instance of the http.Server struct. This is used to reference the core HTTP Server itself when conducting operations such as starting/stopping a listener.

tcpInstance - a copy of the net.Listener struct. This is used to interact with the core TCP Server itself when conducting operations such as starting/stopping a listener.

type ListenerStrings

type ListenerStrings struct {
	ID       string
	Lhost    string
	Lport    string
	Protocol string
}

ListenerStrings - more loose structure for handling listener data, primarily used to hand off as JSON to the lupo client. Contains all the same fields as a Listener structure but as string data types and omits the HTTP/TCPInstance values.

type ManageResponse

type ManageResponse struct {
	Response        string
	CurrentPSK      string
	Instruction     string
	PersistenceMode bool
}

type Session

type Session struct {
	ID           int
	Protocol     string
	Implant      Implant
	Rhost        string
	RawCheckin   time.Time
	Checkin      string
	Status       string
	Rport        int
	CommandQuery string
	Query        string
	RequestType  string
	ShellPath    string
}

type SessionStrings

type SessionStrings struct {
	ID            string
	Protocol      string
	ImplantArch   string
	ImplantUpdate string
	Rhost         string
	RawCheckin    string
	Checkin       string
	Status        string
	Rport         string
	CommandQuery  string
	Query         string
	RequestType   string
	ShellPath     string
}

SessionStrings - more loose structure for handling session data, primarily used to hand off as JSON to the lupo client. Contains all the same fields as a Session structure but as string data types and omits the HTTP/TCPInstance values.

type StartResponse

type StartResponse struct {
	Response    string
	CurrentPSK  string
	Instruction string
	Help        string
	Status      string
}

type TCPData

type TCPData struct {
	PSK                 string
	SessionID           int
	UUID                uuid.UUID
	ImplantArch         string
	Update              float64
	Data                string
	AdditionalFunctions string
	Username            string
	Register            bool
	FileName            string
	File                string
}

type Wolf

type Wolf struct {
	WolfPSK   string
	Username  string
	Rhost     string
	Response  string
	Broadcast string
	Checkin   string
}

Wolf - defines a user structure known as a "wolf" composed of:

WolfPSK - unique PSK randomly generated and seeded into the compilation of the wolfpack client binary on creation of a new user for authentication to the wolfpack server

Username - a username to identify the user connecting to the wolfpack server

Rhost - the "remote" host address. This contains a value of the external IP where a wolpack user is connecting from.

Response - a response to transmit to the wolfpack user (may not be necessary if the server handler loop takes care of this once implemented)