nuclei/pkg/js/libs/smb/smb.go
Tarun Koyalwar dc44105baf
nuclei v3 : misc updates (#4247)
* use parsed options while signing

* update project layout to v3

* fix .gitignore

* remove example template

* misc updates

* bump tlsx version

* hide template sig warning with env

* js: retain value while using log

* fix nil pointer derefernce

* misc doc update

---------

Co-authored-by: sandeep <8293321+ehsandeep@users.noreply.github.com>
2023-10-17 17:44:13 +05:30

96 lines
2.5 KiB
Go

package smb
import (
"context"
"fmt"
"net"
"time"
"github.com/hirochachacha/go-smb2"
"github.com/praetorian-inc/fingerprintx/pkg/plugins"
"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/protocolstate"
"github.com/zmap/zgrab2/lib/smb/smb"
)
// SMBClient is a client for SMB servers.
//
// Internally client uses github.com/zmap/zgrab2/lib/smb/smb driver.
// github.com/hirochachacha/go-smb2 driver
type SMBClient struct{}
// ConnectSMBInfoMode tries to connect to provided host and port
// and discovery SMB information
//
// Returns handshake log and error. If error is not nil,
// state will be false
func (c *SMBClient) ConnectSMBInfoMode(host string, port int) (*smb.SMBLog, error) {
conn, err := protocolstate.Dialer.Dial(context.TODO(), "tcp", fmt.Sprintf("%s:%d", host, port))
if err != nil {
return nil, err
}
defer conn.Close()
_ = conn.SetDeadline(time.Now().Add(10 * time.Second))
setupSession := true
result, err := smb.GetSMBLog(conn, setupSession, false, false)
if err != nil {
conn.Close()
conn, err = net.DialTimeout("tcp", fmt.Sprintf("%s:%d", host, port), 10*time.Second)
if err != nil {
return nil, err
}
result, err = smb.GetSMBLog(conn, setupSession, true, false)
if err != nil {
return nil, err
}
}
return result, nil
}
// ListSMBv2Metadata tries to connect to provided host and port
// and list SMBv2 metadata.
//
// Returns metadata and error. If error is not nil,
// state will be false
func (c *SMBClient) ListSMBv2Metadata(host string, port int) (*plugins.ServiceSMB, error) {
if !protocolstate.IsHostAllowed(host) {
// host is not valid according to network policy
return nil, protocolstate.ErrHostDenied.Msgf(host)
}
return collectSMBv2Metadata(host, port, 5*time.Second)
}
// ListShares tries to connect to provided host and port
// and list shares by using given credentials.
//
// Credentials cannot be blank. guest or anonymous credentials
// can be used by providing empty password.
func (c *SMBClient) ListShares(host string, port int, user, password string) ([]string, error) {
conn, err := protocolstate.Dialer.Dial(context.TODO(), "tcp", fmt.Sprintf("%s:%d", host, port))
if err != nil {
return nil, err
}
defer conn.Close()
d := &smb2.Dialer{
Initiator: &smb2.NTLMInitiator{
User: user,
Password: password,
},
}
s, err := d.Dial(conn)
if err != nil {
return nil, err
}
defer func() {
_ = s.Logoff()
}()
names, err := s.ListSharenames()
if err != nil {
return nil, err
}
return names, nil
}