/
NetBIOS.go
executable file
·389 lines (367 loc) · 11.5 KB
/
NetBIOS.go
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package gopocs
import (
"bytes"
"github.com/hanbufei/dddd/common"
"github.com/hanbufei/dddd/structs"
"errors"
"fmt"
"github.com/projectdiscovery/gologger"
"gopkg.in/yaml.v3"
"net"
"strconv"
"strings"
"time"
)
var netbioserr = errors.New("netbios error")
func NetBIOS(info *structs.HostInfo) error {
netbios, _ := NetBIOS1(info)
output := netbios.String()
if len(output) > 0 {
realhost := fmt.Sprintf("%s:%v", info.Host, info.Ports)
result := fmt.Sprintf("NetBios: %s %s ", info.Host, output)
gologger.Silent().Msg("[GoPoc] " + result)
showData := fmt.Sprintf("Host: %v\nInfo: %v", realhost, output)
GoPocWriteResult(structs.GoPocsResultType{
PocName: "NetBIOS-Leak",
Security: "INFO",
Target: realhost,
InfoLeft: showData,
Description: "NetBIOS服务泄露了主机名、网卡信息"})
return nil
}
return netbioserr
}
func NetBIOS1(info *structs.HostInfo) (netbios NetBiosInfo, err error) {
netbios, err = GetNbnsname(info)
var payload0 []byte
if netbios.ServerService != "" || netbios.WorkstationService != "" {
ss := netbios.ServerService
if ss == "" {
ss = netbios.WorkstationService
}
name := netbiosEncode(ss)
payload0 = append(payload0, []byte("\x81\x00\x00D ")...)
payload0 = append(payload0, name...)
payload0 = append(payload0, []byte("\x00 EOENEBFACACACACACACACACACACACACA\x00")...)
}
realhost := fmt.Sprintf("%s:%v", info.Host, info.Ports)
var conn net.Conn
conn, err = common.WrapperTcpWithTimeout("tcp", realhost, time.Duration(6)*time.Second)
defer func() {
if conn != nil {
conn.Close()
}
}()
if err != nil {
return
}
err = conn.SetDeadline(time.Now().Add(time.Duration(6) * time.Second))
if err != nil {
return
}
if info.Ports == "139" && len(payload0) > 0 {
_, err1 := conn.Write(payload0)
if err1 != nil {
return
}
_, err1 = ReadBytes(conn)
if err1 != nil {
return
}
}
_, err = conn.Write(NegotiateSMBv1Data1)
if err != nil {
return
}
_, err = ReadBytes(conn)
if err != nil {
return
}
_, err = conn.Write(NegotiateSMBv1Data2)
if err != nil {
return
}
var ret []byte
ret, err = ReadBytes(conn)
if err != nil {
return
}
netbios2, err := ParseNTLM(ret)
JoinNetBios(&netbios, &netbios2)
return
}
func GetNbnsname(info *structs.HostInfo) (netbios NetBiosInfo, err error) {
senddata1 := []byte{102, 102, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 32, 67, 75, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, 0, 0, 33, 0, 1}
//senddata1 := []byte("ff\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00 CKAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\x00\x00!\x00\x01")
realhost := fmt.Sprintf("%s:137", info.Host)
conn, err := net.DialTimeout("udp", realhost, time.Duration(6)*time.Second)
defer func() {
if conn != nil {
conn.Close()
}
}()
if err != nil {
return
}
err = conn.SetDeadline(time.Now().Add(time.Duration(6) * time.Second))
if err != nil {
return
}
_, err = conn.Write(senddata1)
if err != nil {
return
}
text, _ := ReadBytes(conn)
netbios, err = ParseNetBios(text)
return
}
func bytetoint(text byte) (int, error) {
num1 := fmt.Sprintf("%v", text)
num, err := strconv.Atoi(num1)
return num, err
}
func netbiosEncode(name string) (output []byte) {
var names []int
src := fmt.Sprintf("%-16s", name)
for _, a := range src {
char_ord := int(a)
high_4_bits := char_ord >> 4
low_4_bits := char_ord & 0x0f
names = append(names, high_4_bits, low_4_bits)
}
for _, one := range names {
out := (one + 0x41)
output = append(output, byte(out))
}
return
}
var (
UNIQUE_NAMES = map[string]string{
"\x00": "WorkstationService",
"\x03": "Messenger Service",
"\x06": "RAS Server Service",
"\x1F": "NetDDE Service",
"\x20": "ServerService",
"\x21": "RAS Client Service",
"\xBE": "Network Monitor Agent",
"\xBF": "Network Monitor Application",
"\x1D": "Master Browser",
"\x1B": "Domain Master Browser",
}
GROUP_NAMES = map[string]string{
"\x00": "DomainName",
"\x1C": "DomainControllers",
"\x1E": "Browser Service Elections",
}
NetBIOS_ITEM_TYPE = map[string]string{
"\x01\x00": "NetBiosComputerName",
"\x02\x00": "NetBiosDomainName",
"\x03\x00": "ComputerName",
"\x04\x00": "DomainName",
"\x05\x00": "DNS tree name",
"\x07\x00": "Time stamp",
}
NegotiateSMBv1Data1 = []byte{
0x00, 0x00, 0x00, 0x85, 0xFF, 0x53, 0x4D, 0x42, 0x72, 0x00, 0x00, 0x00, 0x00, 0x18, 0x53, 0xC8,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFE,
0x00, 0x00, 0x00, 0x00, 0x00, 0x62, 0x00, 0x02, 0x50, 0x43, 0x20, 0x4E, 0x45, 0x54, 0x57, 0x4F,
0x52, 0x4B, 0x20, 0x50, 0x52, 0x4F, 0x47, 0x52, 0x41, 0x4D, 0x20, 0x31, 0x2E, 0x30, 0x00, 0x02,
0x4C, 0x41, 0x4E, 0x4D, 0x41, 0x4E, 0x31, 0x2E, 0x30, 0x00, 0x02, 0x57, 0x69, 0x6E, 0x64, 0x6F,
0x77, 0x73, 0x20, 0x66, 0x6F, 0x72, 0x20, 0x57, 0x6F, 0x72, 0x6B, 0x67, 0x72, 0x6F, 0x75, 0x70,
0x73, 0x20, 0x33, 0x2E, 0x31, 0x61, 0x00, 0x02, 0x4C, 0x4D, 0x31, 0x2E, 0x32, 0x58, 0x30, 0x30,
0x32, 0x00, 0x02, 0x4C, 0x41, 0x4E, 0x4D, 0x41, 0x4E, 0x32, 0x2E, 0x31, 0x00, 0x02, 0x4E, 0x54,
0x20, 0x4C, 0x4D, 0x20, 0x30, 0x2E, 0x31, 0x32, 0x00,
}
NegotiateSMBv1Data2 = []byte{
0x00, 0x00, 0x01, 0x0A, 0xFF, 0x53, 0x4D, 0x42, 0x73, 0x00, 0x00, 0x00, 0x00, 0x18, 0x07, 0xC8,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFE,
0x00, 0x00, 0x40, 0x00, 0x0C, 0xFF, 0x00, 0x0A, 0x01, 0x04, 0x41, 0x32, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x4A, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD4, 0x00, 0x00, 0xA0, 0xCF, 0x00, 0x60,
0x48, 0x06, 0x06, 0x2B, 0x06, 0x01, 0x05, 0x05, 0x02, 0xA0, 0x3E, 0x30, 0x3C, 0xA0, 0x0E, 0x30,
0x0C, 0x06, 0x0A, 0x2B, 0x06, 0x01, 0x04, 0x01, 0x82, 0x37, 0x02, 0x02, 0x0A, 0xA2, 0x2A, 0x04,
0x28, 0x4E, 0x54, 0x4C, 0x4D, 0x53, 0x53, 0x50, 0x00, 0x01, 0x00, 0x00, 0x00, 0x07, 0x82, 0x08,
0xA2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x05, 0x02, 0xCE, 0x0E, 0x00, 0x00, 0x00, 0x0F, 0x00, 0x57, 0x00, 0x69, 0x00, 0x6E, 0x00,
0x64, 0x00, 0x6F, 0x00, 0x77, 0x00, 0x73, 0x00, 0x20, 0x00, 0x53, 0x00, 0x65, 0x00, 0x72, 0x00,
0x76, 0x00, 0x65, 0x00, 0x72, 0x00, 0x20, 0x00, 0x32, 0x00, 0x30, 0x00, 0x30, 0x00, 0x33, 0x00,
0x20, 0x00, 0x33, 0x00, 0x37, 0x00, 0x39, 0x00, 0x30, 0x00, 0x20, 0x00, 0x53, 0x00, 0x65, 0x00,
0x72, 0x00, 0x76, 0x00, 0x69, 0x00, 0x63, 0x00, 0x65, 0x00, 0x20, 0x00, 0x50, 0x00, 0x61, 0x00,
0x63, 0x00, 0x6B, 0x00, 0x20, 0x00, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x57, 0x00, 0x69, 0x00,
0x6E, 0x00, 0x64, 0x00, 0x6F, 0x00, 0x77, 0x00, 0x73, 0x00, 0x20, 0x00, 0x53, 0x00, 0x65, 0x00,
0x72, 0x00, 0x76, 0x00, 0x65, 0x00, 0x72, 0x00, 0x20, 0x00, 0x32, 0x00, 0x30, 0x00, 0x30, 0x00,
0x33, 0x00, 0x20, 0x00, 0x35, 0x00, 0x2E, 0x00, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00,
}
)
type NetBiosInfo struct {
GroupName string
WorkstationService string `yaml:"WorkstationService"`
ServerService string `yaml:"ServerService"`
DomainName string `yaml:"DomainName"`
DomainControllers string `yaml:"DomainControllers"`
ComputerName string `yaml:"ComputerName"`
OsVersion string `yaml:"OsVersion"`
NetDomainName string `yaml:"NetBiosDomainName"`
NetComputerName string `yaml:"NetBiosComputerName"`
}
func (info *NetBiosInfo) String() (output string) {
var text string
//ComputerName 信息比较全
if info.ComputerName != "" {
if !strings.Contains(info.ComputerName, ".") && info.GroupName != "" {
text = fmt.Sprintf("%s\\%s", info.GroupName, info.ComputerName)
} else {
text = info.ComputerName
}
} else {
//组信息
if info.DomainName != "" {
text += info.DomainName
text += "\\"
} else if info.NetDomainName != "" {
text += info.NetDomainName
text += "\\"
}
//机器名
if info.ServerService != "" {
text += info.ServerService
} else if info.WorkstationService != "" {
text += info.WorkstationService
} else if info.NetComputerName != "" {
text += info.NetComputerName
}
}
if text == "" {
} else if info.DomainControllers != "" {
output = fmt.Sprintf("[+]DC %-24s", text)
} else {
output = fmt.Sprintf("%-30s", text)
}
if info.OsVersion != "" {
output += " " + info.OsVersion
}
return
}
func ParseNetBios(input []byte) (netbios NetBiosInfo, err error) {
if len(input) < 57 {
err = netbioserr
return
}
data := input[57:]
var num int
num, err = bytetoint(input[56:57][0])
if err != nil {
return
}
var msg string
for i := 0; i < num; i++ {
if len(data) < 18*i+16 {
break
}
name := string(data[18*i : 18*i+15])
flag_bit := data[18*i+15 : 18*i+16]
if GROUP_NAMES[string(flag_bit)] != "" && string(flag_bit) != "\x00" {
msg += fmt.Sprintf("%s: %s\n", GROUP_NAMES[string(flag_bit)], name)
} else if UNIQUE_NAMES[string(flag_bit)] != "" && string(flag_bit) != "\x00" {
msg += fmt.Sprintf("%s: %s\n", UNIQUE_NAMES[string(flag_bit)], name)
} else if string(flag_bit) == "\x00" || len(data) >= 18*i+18 {
name_flags := data[18*i+16 : 18*i+18][0]
if name_flags >= 128 {
msg += fmt.Sprintf("%s: %s\n", GROUP_NAMES[string(flag_bit)], name)
} else {
msg += fmt.Sprintf("%s: %s\n", UNIQUE_NAMES[string(flag_bit)], name)
}
} else {
msg += fmt.Sprintf("%s \n", name)
}
}
if len(msg) == 0 {
err = netbioserr
return
}
err = yaml.Unmarshal([]byte(msg), &netbios)
if netbios.DomainName != "" {
netbios.GroupName = netbios.DomainName
}
return
}
func ParseNTLM(ret []byte) (netbios NetBiosInfo, err error) {
if len(ret) < 47 {
err = netbioserr
return
}
var num1, num2 int
num1, err = bytetoint(ret[43:44][0])
if err != nil {
return
}
num2, err = bytetoint(ret[44:45][0])
if err != nil {
return
}
length := num1 + num2*256
if len(ret) < 48+length {
return
}
os_version := ret[47+length:]
tmp1 := bytes.ReplaceAll(os_version, []byte{0x00, 0x00}, []byte{124})
tmp1 = bytes.ReplaceAll(tmp1, []byte{0x00}, []byte{})
ostext := string(tmp1[:len(tmp1)-1])
ss := strings.Split(ostext, "|")
netbios.OsVersion = ss[0]
start := bytes.Index(ret, []byte("NTLMSSP"))
if len(ret) < start+45 {
return
}
num1, err = bytetoint(ret[start+40 : start+41][0])
if err != nil {
return
}
num2, err = bytetoint(ret[start+41 : start+42][0])
if err != nil {
return
}
length = num1 + num2*256
num1, err = bytetoint(ret[start+44 : start+45][0])
if err != nil {
return
}
offset, err := bytetoint(ret[start+44 : start+45][0])
if err != nil || len(ret) < start+offset+length {
return
}
var msg string
index := start + offset
for index < start+offset+length {
item_type := ret[index : index+2]
num1, err = bytetoint(ret[index+2 : index+3][0])
if err != nil {
continue
}
num2, err = bytetoint(ret[index+3 : index+4][0])
if err != nil {
continue
}
item_length := num1 + num2*256
item_content := bytes.ReplaceAll(ret[index+4:index+4+item_length], []byte{0x00}, []byte{})
index += 4 + item_length
if string(item_type) == "\x07\x00" {
//Time stamp, 不需要输出
} else if NetBIOS_ITEM_TYPE[string(item_type)] != "" {
msg += fmt.Sprintf("%s: %s\n", NetBIOS_ITEM_TYPE[string(item_type)], string(item_content))
} else if string(item_type) == "\x00\x00" {
break
}
}
err = yaml.Unmarshal([]byte(msg), &netbios)
return
}
func JoinNetBios(netbios1, netbios2 *NetBiosInfo) *NetBiosInfo {
netbios1.ComputerName = netbios2.ComputerName
netbios1.NetDomainName = netbios2.NetDomainName
netbios1.NetComputerName = netbios2.NetComputerName
if netbios2.DomainName != "" {
netbios1.DomainName = netbios2.DomainName
}
netbios1.OsVersion = netbios2.OsVersion
return netbios1
}