transports

Documentation

Index

• Constants
• func GCMDecrypt(key AESKey, ciphertext []byte) ([]byte, error)
• func GCMEncrypt(key AESKey, plaintext []byte) ([]byte, error)
• func GetActiveC2() string
• func GetProxyURL() string
• func GetReconnectInterval() time.Duration
• func GetTNet() *netstack.Net
• func GetTUNAddress() string
• func LookupDomainKey(selector string, parentDomain string) ([]byte, error)
• func RSADecrypt(ciphertext []byte, privateKey *rsa.PrivateKey) ([]byte, error)
• func RSAEncrypt(msg []byte, pub *rsa.PublicKey) ([]byte, error)
• type AESIV
  • func RandomAESIV() AESIV
• type AESKey
  • func RandomAESKey() AESKey
  • func (AESKey) FromBytes(data []byte) AESKey
• type BlockReassembler
• type Connection
  • func GetActiveConnection() *Connection
  • func StartConnectionLoop() *Connection
  • func (c *Connection) AddTunnel(tun *Tunnel)
  • func (c *Connection) Cleanup()
  • func (c *Connection) RemoveTunnel(ID uint64)
  • func (c *Connection) Tunnel(ID uint64) *Tunnel
• type Jar
  • func NewJar() *Jar
  • func (jar *Jar) Cookies(u *url.URL) []*http.Cookie
  • func (jar *Jar) SetCookies(u *url.URL, cookies []*http.Cookie)
• type RecvBlock
• type SliverHTTPClient
  • func HTTPStartSession(address string, pathPrefix string) (*SliverHTTPClient, error)
  • func (s *SliverHTTPClient) Poll() ([]byte, error)
  • func (s *SliverHTTPClient) Send(data []byte) error
  • func (s *SliverHTTPClient) SessionInit() error
• type Tunnel

Constants

const (
	// AESKeySize - Always use 256 bit keys
	AESKeySize = 16

	// GCMNonceSize - 96 bit nonces for GCM
	GCMNonceSize = 12
)

Functions

func GCMDecrypt

func GCMDecrypt(key AESKey, ciphertext []byte) ([]byte, error)

GCMDecrypt - Decrypt GCM ciphertext

func GCMEncrypt

func GCMEncrypt(key AESKey, plaintext []byte) ([]byte, error)

GCMEncrypt - Encrypt using AES GCM

func GetActiveC2

func GetActiveC2() string

GetActiveC2 returns the URL of the C2 in use

func GetProxyURL

func GetProxyURL() string

GetProxyURL return the URL of the current proxy in use

func GetReconnectInterval

func GetReconnectInterval() time.Duration

GetReconnectInterval - Parse the reconnect interval inserted at compile-time

func GetTNet

func GetTNet() *netstack.Net

func GetTUNAddress

func GetTUNAddress() string

func LookupDomainKey

func LookupDomainKey(selector string, parentDomain string) ([]byte, error)

LookupDomainKey - Attempt to get the server's RSA public key

func RSADecrypt

func RSADecrypt(ciphertext []byte, privateKey *rsa.PrivateKey) ([]byte, error)

RSADecrypt - Decrypt ciphertext with rsa private key

func RSAEncrypt

func RSAEncrypt(msg []byte, pub *rsa.PublicKey) ([]byte, error)

RSAEncrypt - Encrypt a msg with a public rsa key

Types

type AESIV

type AESIV [aes.BlockSize]byte

AESIV - 128 bit IV

func RandomAESIV

func RandomAESIV() AESIV

RandomAESIV - 128 bit Random IV

type AESKey

type AESKey [AESKeySize]byte

AESKey - 128 bit key

func RandomAESKey

func RandomAESKey() AESKey

RandomAESKey - Generate random ID of randomIDSize bytes

func (AESKey) FromBytes

func (AESKey) FromBytes(data []byte) AESKey

FromBytes - Creates an AESKey from bytes

type BlockReassembler

type BlockReassembler struct {
	ID   string
	Size int
	Recv chan *RecvBlock
}

BlockReassembler - Data is encoded and split into `Blocks`

type Connection

type Connection struct {
	Send   chan *pb.Envelope
	Recv   chan *pb.Envelope
	IsOpen bool
	// contains filtered or unexported fields
}

Connection - Abstract connection to the server

func GetActiveConnection

func GetActiveConnection() *Connection

GetActiveConnection returns the Connection of the C2 in use

func StartConnectionLoop

func StartConnectionLoop() *Connection

StartConnectionLoop - Starts the main connection loop

func (*Connection) AddTunnel

func (c *Connection) AddTunnel(tun *Tunnel)

AddTunnel - Add tunnel to mapping

func (*Connection) Cleanup

func (c *Connection) Cleanup()

Cleanup - Execute cleanup once

func (*Connection) RemoveTunnel

func (c *Connection) RemoveTunnel(ID uint64)

RemoveTunnel - Add tunnel to mapping

func (*Connection) Tunnel

func (c *Connection) Tunnel(ID uint64) *Tunnel

Tunnel - Add tunnel to mapping

type Jar

type Jar struct {
	// contains filtered or unexported fields
}

Jar - CookieJar implementation that ignores domains/origins

func NewJar

func NewJar() *Jar

NewJar - Get a new instance of a cookie jar

func (*Jar) Cookies

func (jar *Jar) Cookies(u *url.URL) []*http.Cookie

Cookies returns the cookies to send in a request for the given URL. It is up to the implementation to honor the standard cookie use restrictions such as in RFC 6265 (which we do not).

func (*Jar) SetCookies

func (jar *Jar) SetCookies(u *url.URL, cookies []*http.Cookie)

SetCookies handles the receipt of the cookies in a reply for the given URL (which is ignored).

type RecvBlock

type RecvBlock struct {
	Index int
	Data  string
}

RecvBlock - Single block from server

type SliverHTTPClient

type SliverHTTPClient struct {
	Origin     string
	PathPrefix string
	Client     *http.Client
	ProxyURL   string
	SessionKey *AESKey
	SessionID  string
}

SliverHTTPClient - Helper struct to keep everything together

func HTTPStartSession

func HTTPStartSession(address string, pathPrefix string) (*SliverHTTPClient, error)

HTTPStartSession - Attempts to start a session with a given address

func (*SliverHTTPClient) Poll

func (s *SliverHTTPClient) Poll() ([]byte, error)

Poll - Perform an HTTP GET request

func (*SliverHTTPClient) Send

func (s *SliverHTTPClient) Send(data []byte) error

Send - Perform an HTTP POST request

func (*SliverHTTPClient) SessionInit

func (s *SliverHTTPClient) SessionInit() error

SessionInit - Initialize the session

type Tunnel

type Tunnel struct {
	ID uint64

	Reader       io.ReadCloser
	ReadSequence uint64

	Writer        io.WriteCloser
	WriteSequence uint64
}

Tunnel - Duplex byte read/write