11425ac78b
This abstracts more of the help text into the ScanModule definition, removing some more of the need for `zgrab2.AddCommand()` https://github.com/zmap/zgrab2/pull/248
108 lines
2.8 KiB
Go
108 lines
2.8 KiB
Go
// Package dnp3 provides a zgrab2 module that scans for dnp3.
|
|
// Default port: 20000 (TCP)
|
|
//
|
|
// Copied unmodified from the original zgrab.
|
|
// Connects, and reads the banner. Returns the raw response.
|
|
package dnp3
|
|
|
|
import (
|
|
log "github.com/sirupsen/logrus"
|
|
"github.com/zmap/zgrab2"
|
|
)
|
|
|
|
// Flags holds the command-line configuration for the dnp3 scan module.
|
|
// Populated by the framework.
|
|
type Flags struct {
|
|
zgrab2.BaseFlags
|
|
// TODO: Support UDP?
|
|
Verbose bool `long:"verbose" description:"More verbose logging, include debug fields in the scan results"`
|
|
}
|
|
|
|
// Module implements the zgrab2.Module interface.
|
|
type Module struct {
|
|
}
|
|
|
|
// Scanner implements the zgrab2.Scanner interface.
|
|
type Scanner struct {
|
|
config *Flags
|
|
}
|
|
|
|
// RegisterModule registers the zgrab2 module.
|
|
func RegisterModule() {
|
|
var module Module
|
|
_, err := zgrab2.AddCommand("dnp3", "dnp3", module.Description(), 20000, &module)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
// NewFlags returns a default Flags object.
|
|
func (module *Module) NewFlags() interface{} {
|
|
return new(Flags)
|
|
}
|
|
|
|
// NewScanner returns a new Scanner instance.
|
|
func (module *Module) NewScanner() zgrab2.Scanner {
|
|
return new(Scanner)
|
|
}
|
|
|
|
// Description returns an overview of this module.
|
|
func (module *Module) Description() string {
|
|
return "Probe for DNP3, a SCADA protocol"
|
|
}
|
|
|
|
// Validate checks that the flags are valid.
|
|
// On success, returns nil.
|
|
// On failure, returns an error instance describing the error.
|
|
func (flags *Flags) Validate(args []string) error {
|
|
return nil
|
|
}
|
|
|
|
// Help returns the module's help string.
|
|
func (flags *Flags) Help() string {
|
|
return ""
|
|
}
|
|
|
|
// Init initializes the Scanner.
|
|
func (scanner *Scanner) Init(flags zgrab2.ScanFlags) error {
|
|
f, _ := flags.(*Flags)
|
|
scanner.config = f
|
|
return nil
|
|
}
|
|
|
|
// InitPerSender initializes the scanner for a given sender.
|
|
func (scanner *Scanner) InitPerSender(senderID int) error {
|
|
return nil
|
|
}
|
|
|
|
// GetName returns the Scanner name defined in the Flags.
|
|
func (scanner *Scanner) GetName() string {
|
|
return scanner.config.Name
|
|
}
|
|
|
|
// GetTrigger returns the Trigger defined in the Flags.
|
|
func (scanner *Scanner) GetTrigger() string {
|
|
return scanner.config.Trigger
|
|
}
|
|
|
|
// Protocol returns the protocol identifier of the scan.
|
|
func (scanner *Scanner) Protocol() string {
|
|
return "dnp3"
|
|
}
|
|
|
|
// Scan probes for a DNP3 service.
|
|
// Connects to the configured TCP port (default 20000) and reads the banner.
|
|
func (scanner *Scanner) Scan(target zgrab2.ScanTarget) (zgrab2.ScanStatus, interface{}, error) {
|
|
// TODO: Allow UDP?
|
|
conn, err := target.Open(&scanner.config.BaseFlags)
|
|
if err != nil {
|
|
return zgrab2.TryGetScanStatus(err), nil, err
|
|
}
|
|
defer conn.Close()
|
|
ret := new(DNP3Log)
|
|
if err := GetDNP3Banner(ret, conn); err != nil {
|
|
return zgrab2.TryGetScanStatus(err), nil, err
|
|
}
|
|
return zgrab2.SCAN_SUCCESS, ret, nil
|
|
}
|