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smbScan.go
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smbScan.go
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package plugin
// from https://github.com/JKme/cube/blob/cb84da1f305f1f6a92ae3011c7be9c0f998c3571/plugins/probe/ntlm_smb.go
import (
"bytes"
"encoding/hex"
"errors"
"github.com/M09ic/go-ntlmssp"
. "github.com/chainreactors/gogo/v2/pkg"
"github.com/chainreactors/utils/iutils"
)
var v1d1 = Decode("YmBgaP0f7OtUxMDAwCARfIIBBfz/B6aSGJgCnBX8XEPC/YO8FQKC/N2DHH0VDPUMGJh8HP18Hf3AzPDMvJT88mKFtPwihfD8ouz0ovzSgmIFYz3DRAYmH19DPaMIAwMjmBYjPUMGJr8QBR9fBQM9QyMGAAAAAP//")
var v1d2 = Decode("jIwxS8NAHEffHclFjhBXxxvFgBwJEgQRdRIxEjjBVYkZgqBgoN3zSUI+Tad26edpSkOGtlPf8IY/7/8DoQeXPzUAF8GCA4YNPBAOaOE9JtPxZfQauhWfz0rFSvi+7O7tXRfZUOlYCU+0mZS6v/Iu395fc+cKBBC0Zz1H+HIZAed8UPPLN3/MaTA4Kv6ZjTYkWCwphpSMW+xeUVNSYSj4ouRnrHecunjD9fSxBQAA//8=")
var v2d1 = Decode("YmBgcP0f7OtUxMDAwCDB6MGABP7/X8MMZigxMPmFKPj4KhjoGRoxMAX7OikY6RkYwJn29vYMAAAAAP//")
var v2d2 = Decode("YmBgyPgX7OvkwMDIgA4wRbADFQYmsFoHPGqYmASYAAAAAP//")
func ntlmdata(Flags []byte) []byte {
return []byte{
0x00, 0x00, 0x00, 0x9A, 0xFE, 0x53, 0x4D, 0x42, 0x40, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x58, 0x00, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x60, 0x40, 0x06, 0x06, 0x2B, 0x06, 0x01, 0x05,
0x05, 0x02, 0xA0, 0x36, 0x30, 0x34, 0xA0, 0x0E, 0x30, 0x0C,
0x06, 0x0A, 0x2B, 0x06, 0x01, 0x04, 0x01, 0x82, 0x37, 0x02,
0x02, 0x0A, 0xA2, 0x22, 0x04, 0x20, 0x4E, 0x54, 0x4C, 0x4D,
0x53, 0x53, 0x50, 0x00, 0x01, 0x00, 0x00, 0x00,
Flags[0], Flags[1],
Flags[2], Flags[3],
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
}
}
func smbScan(result *Result) {
result.Port = "445"
target := result.GetTarget()
var err error
var ret []byte
//ff534d42 SMBv1的标示
//fe534d42 SMBv2的标示
//先发送探测SMBv1的payload,不支持的SMBv1的时候返回为空,然后尝试发送SMBv2的探测数据包
ret, err = smb1Scan(target)
if err != nil && err.Error() == "conn failed" {
return
}
if ret == nil {
result.Open = true
if ret, err = smb2Scan(target); ret != nil {
result.Status = "SMB2"
} else {
result.Protocol = "tcp"
result.Status = "tcp"
return
}
} else {
result.Open = true
result.Status = "SMB1"
}
result.Protocol = "smb"
result.AddNTLMInfo(iutils.ToStringMap(ntlmssp.NTLMInfo(ret)), "smb")
}
func smb1Scan(target string) ([]byte, error) {
var err error
conn, err := NewSocket("tcp", target, RunOpt.Delay)
if err != nil {
return nil, errors.New("conn failed")
}
defer conn.Close()
_, err = conn.Request(v1d1, 4096)
if err != nil {
return nil, err
}
r2, err := conn.Request(v1d2, 4096)
//if err != nil || len(r2) < 47 {
// return nil, err
//}
//gss_native := r2[47:]
off_ntlm := bytes.Index(r2, []byte("NTLMSSP"))
if off_ntlm != -1 {
return r2[off_ntlm:], err
}
return nil, err
}
func smb2Scan(target string) ([]byte, error) {
var err error
conn, err := NewSocket("tcp", target, RunOpt.Delay)
if err != nil {
return nil, err
}
defer conn.Close()
r2, err := conn.Request(v2d1, 4096)
if err != nil {
return nil, err
}
var NTLMSSPNegotiatev2Data []byte
if hex.EncodeToString(r2[70:71]) == "03" {
NTLMSSPNegotiatev2Data = ntlmdata([]byte{0x15, 0x82, 0x08, 0xa0})
} else {
NTLMSSPNegotiatev2Data = ntlmdata([]byte{0x05, 0x80, 0x08, 0xa0})
}
_, err = conn.Request(v2d2, 4096)
if err != nil {
return nil, err
}
ret, _ := conn.Request(NTLMSSPNegotiatev2Data, 4096)
ntlmOff := bytes.Index(ret, []byte("NTLMSSP"))
if ntlmOff != -1 {
return ret[ntlmOff:], err
} else {
return nil, err
}
}