/*
old style session setup (pre NT1 protocol level)
*/
static NTSTATUS session_setup_old(struct composite_context *c,
struct smbcli_session *session,
struct smb_composite_sesssetup *io,
struct smbcli_request **req)
{
NTSTATUS nt_status;
struct sesssetup_state *state = talloc_get_type(c->private_data, struct sesssetup_state);
const char *password = cli_credentials_get_password(io->in.credentials);
DATA_BLOB names_blob = NTLMv2_generate_names_blob(state, session->transport->socket->hostname, cli_credentials_get_domain(io->in.credentials));
DATA_BLOB session_key;
int flags = 0;
if (session->options.lanman_auth) {
flags |= CLI_CRED_LANMAN_AUTH;
}
if (session->options.ntlmv2_auth) {
flags |= CLI_CRED_NTLMv2_AUTH;
}
state->setup.old.level = RAW_SESSSETUP_OLD;
state->setup.old.in.bufsize = session->transport->options.max_xmit;
state->setup.old.in.mpx_max = session->transport->options.max_mux;
state->setup.old.in.vc_num = 1;
state->setup.old.in.sesskey = io->in.sesskey;
state->setup.old.in.os = "Unix";
state->setup.old.in.lanman = talloc_asprintf(state, "Samba %s", SAMBA_VERSION_STRING);
cli_credentials_get_ntlm_username_domain(io->in.credentials, state,
&state->setup.old.in.user,
&state->setup.old.in.domain);
if (session->transport->negotiate.sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) {
nt_status = cli_credentials_get_ntlm_response(io->in.credentials, state,
&flags,
session->transport->negotiate.secblob,
names_blob,
&state->setup.old.in.password,
NULL,
NULL, &session_key);
NT_STATUS_NOT_OK_RETURN(nt_status);
set_user_session_key(session, &session_key);
data_blob_free(&session_key);
} else if (session->options.plaintext_auth) {
state->setup.old.in.password = data_blob_talloc(state, password, strlen(password));
} else {
/* could match windows client and return 'cannot logon from this workstation', but it just confuses everybody */
return NT_STATUS_INVALID_PARAMETER;
}
*req = smb_raw_sesssetup_send(session, &state->setup);
if (!*req) {
return NT_STATUS_NO_MEMORY;
}
return (*req)->status;
}
/*
try a netlogon SamLogon
*/
bool test_netlogon_ex_ops(struct dcerpc_pipe *p, struct torture_context *tctx,
struct cli_credentials *credentials,
struct netlogon_creds_CredentialState *creds)
{
NTSTATUS status;
struct netr_LogonSamLogonEx r;
struct netr_NetworkInfo ninfo;
union netr_LogonLevel logon;
union netr_Validation validation;
uint8_t authoritative = 0;
uint32_t _flags = 0;
DATA_BLOB names_blob, chal, lm_resp, nt_resp;
int i;
int flags = CLI_CRED_NTLM_AUTH;
struct dcerpc_binding_handle *b = p->binding_handle;
struct netr_UserSessionKey key;
struct netr_LMSessionKey LMSessKey;
uint32_t validation_levels[] = { 2, 3 };
struct netr_SamBaseInfo *base = NULL;
const char *crypto_alg = "";
bool can_do_validation_6 = true;
enum dcerpc_AuthLevel auth_level = DCERPC_AUTH_LEVEL_NONE;
if (lpcfg_client_lanman_auth(tctx->lp_ctx)) {
flags |= CLI_CRED_LANMAN_AUTH;
}
if (lpcfg_client_ntlmv2_auth(tctx->lp_ctx)) {
flags |= CLI_CRED_NTLMv2_AUTH;
}
cli_credentials_get_ntlm_username_domain(cmdline_credentials, tctx,
&ninfo.identity_info.account_name.string,
&ninfo.identity_info.domain_name.string);
generate_random_buffer(ninfo.challenge,
sizeof(ninfo.challenge));
chal = data_blob_const(ninfo.challenge,
sizeof(ninfo.challenge));
names_blob = NTLMv2_generate_names_blob(tctx, cli_credentials_get_workstation(credentials),
cli_credentials_get_domain(credentials));
status = cli_credentials_get_ntlm_response(cmdline_credentials, tctx,
&flags,
chal,
names_blob,
&lm_resp, &nt_resp,
NULL, NULL);
torture_assert_ntstatus_ok(tctx, status,
"cli_credentials_get_ntlm_response failed");
ninfo.lm.data = lm_resp.data;
ninfo.lm.length = lm_resp.length;
ninfo.nt.data = nt_resp.data;
ninfo.nt.length = nt_resp.length;
ninfo.identity_info.parameter_control = 0;
ninfo.identity_info.logon_id_low = 0;
ninfo.identity_info.logon_id_high = 0;
ninfo.identity_info.workstation.string = cli_credentials_get_workstation(credentials);
logon.network = &ninfo;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.logon_level = NetlogonNetworkInformation;
r.in.logon= &logon;
r.in.flags = &_flags;
r.out.validation = &validation;
r.out.authoritative = &authoritative;
r.out.flags = &_flags;
/*
- retrieve level6
- save usrsession and lmsession key
- retrieve level 2
- calculate, compare
- retrieve level 3
- calculate, compare
*/
if (creds) {
if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
crypto_alg = "AES";
} else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
crypto_alg = "ARCFOUR";
}
}
dcerpc_binding_handle_auth_info(b, NULL, &auth_level);
if (auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
r.in.validation_level = 6;
torture_comment(tctx,
"Testing LogonSamLogonEx with name %s using %s and validation_level: %d\n",
ninfo.identity_info.account_name.string, crypto_alg,
r.in.validation_level);
torture_assert_ntstatus_ok(tctx,
dcerpc_netr_LogonSamLogonEx_r(b, tctx, &r),
"LogonSamLogonEx failed");
} else {
torture_comment(tctx,
"Skip auth_level[%u] Testing LogonSamLogonEx with name %s using %s and validation_level: %d\n",
auth_level, ninfo.identity_info.account_name.string, crypto_alg,
r.in.validation_level);
r.out.result = NT_STATUS_INVALID_INFO_CLASS;
}
if (NT_STATUS_EQUAL(r.out.result, NT_STATUS_INVALID_INFO_CLASS)) {
can_do_validation_6 = false;
} else {
torture_assert_ntstatus_ok(tctx, r.out.result,
"LogonSamLogonEx failed");
key = r.out.validation->sam6->base.key;
LMSessKey = r.out.validation->sam6->base.LMSessKey;
DEBUG(1,("unencrypted session keys from validation_level 6:\n"));
dump_data(1, r.out.validation->sam6->base.key.key, 16);
dump_data(1, r.out.validation->sam6->base.LMSessKey.key, 8);
}
for (i=0; i < ARRAY_SIZE(validation_levels); i++) {
r.in.validation_level = validation_levels[i];
torture_comment(tctx,
"Testing LogonSamLogonEx with name %s using %s and validation_level: %d\n",
ninfo.identity_info.account_name.string, crypto_alg,
r.in.validation_level);
torture_assert_ntstatus_ok(tctx,
dcerpc_netr_LogonSamLogonEx_r(b, tctx, &r),
"LogonSamLogonEx failed");
torture_assert_ntstatus_ok(tctx, r.out.result,
"LogonSamLogonEx failed");
if (creds == NULL) {
/* when this test is called without creds no point in
* testing the session keys */
continue;
}
switch (validation_levels[i]) {
case 2:
base = &r.out.validation->sam2->base;
break;
case 3:
base = &r.out.validation->sam3->base;
break;
default:
break;
}
DEBUG(1,("encrypted keys validation_level %d:\n",
validation_levels[i]));
dump_data(1, base->key.key, 16);
dump_data(1, base->LMSessKey.key, 8);
if (creds->negotiate_flags & NETLOGON_NEG_SUPPORTS_AES) {
netlogon_creds_aes_decrypt(creds, base->key.key, 16);
netlogon_creds_aes_decrypt(creds, base->LMSessKey.key, 8);
} else if (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
netlogon_creds_arcfour_crypt(creds, base->key.key, 16);
netlogon_creds_arcfour_crypt(creds, base->LMSessKey.key, 8);
}
DEBUG(1,("decryped keys validation_level %d\n",
validation_levels[i]));
dump_data(1, base->key.key, 16);
dump_data(1, base->LMSessKey.key, 8);
if (!can_do_validation_6) {
/* we cant compare against unencrypted keys */
continue;
}
torture_assert_mem_equal(tctx,
base->key.key,
key.key,
16,
"unexpected user session key\n");
torture_assert_mem_equal(tctx,
base->LMSessKey.key,
LMSessKey.key,
8,
"unexpected LM session key\n");
}
return true;
}
NTSTATUS ntlmssp_client_challenge(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
const DATA_BLOB in, DATA_BLOB *out)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
uint32_t chal_flags, ntlmssp_command, unkn1, unkn2;
DATA_BLOB server_domain_blob;
DATA_BLOB challenge_blob;
DATA_BLOB target_info = data_blob(NULL, 0);
char *server_domain;
const char *chal_parse_string;
const char *auth_gen_string;
DATA_BLOB lm_response = data_blob(NULL, 0);
DATA_BLOB nt_response = data_blob(NULL, 0);
DATA_BLOB session_key = data_blob(NULL, 0);
DATA_BLOB lm_session_key = data_blob(NULL, 0);
DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
NTSTATUS nt_status;
int flags = 0;
const char *user, *domain;
TALLOC_CTX *mem_ctx = talloc_new(out_mem_ctx);
if (!mem_ctx) {
return NT_STATUS_NO_MEMORY;
}
if (!msrpc_parse(mem_ctx,
&in, "CdBd",
"NTLMSSP",
&ntlmssp_command,
&server_domain_blob,
&chal_flags)) {
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n"));
dump_data(2, in.data, in.length);
talloc_free(mem_ctx);
return NT_STATUS_INVALID_PARAMETER;
}
data_blob_free(&server_domain_blob);
DEBUG(3, ("Got challenge flags:\n"));
debug_ntlmssp_flags(chal_flags);
ntlmssp_handle_neg_flags(ntlmssp_state, chal_flags, ntlmssp_state->allow_lm_key);
if (ntlmssp_state->unicode) {
if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdUdbddB";
} else {
chal_parse_string = "CdUdbdd";
}
auth_gen_string = "CdBBUUUBd";
} else {
if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdAdbddB";
} else {
chal_parse_string = "CdAdbdd";
}
auth_gen_string = "CdBBAAABd";
}
if (!msrpc_parse(mem_ctx,
&in, chal_parse_string,
"NTLMSSP",
&ntlmssp_command,
&server_domain,
&chal_flags,
&challenge_blob, 8,
&unkn1, &unkn2,
&target_info)) {
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n"));
dump_data(2, in.data, in.length);
talloc_free(mem_ctx);
return NT_STATUS_INVALID_PARAMETER;
}
if (chal_flags & NTLMSSP_TARGET_TYPE_SERVER) {
ntlmssp_state->server.is_standalone = true;
} else {
ntlmssp_state->server.is_standalone = false;
}
/* TODO: parse struct_blob and fill in the rest */
ntlmssp_state->server.netbios_name = "";
ntlmssp_state->server.netbios_domain = server_domain;
ntlmssp_state->server.dns_name = "";
ntlmssp_state->server.dns_domain = "";
if (challenge_blob.length != 8) {
talloc_free(mem_ctx);
return NT_STATUS_INVALID_PARAMETER;
}
cli_credentials_get_ntlm_username_domain(gensec_security->credentials, mem_ctx,
&user, &domain);
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
flags |= CLI_CRED_NTLM2;
}
if (ntlmssp_state->use_ntlmv2) {
flags |= CLI_CRED_NTLMv2_AUTH;
}
if (ntlmssp_state->use_nt_response) {
flags |= CLI_CRED_NTLM_AUTH;
}
if (lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx)) {
flags |= CLI_CRED_LANMAN_AUTH;
}
nt_status = cli_credentials_get_ntlm_response(gensec_security->credentials, mem_ctx,
&flags, challenge_blob, target_info,
&lm_response, &nt_response,
&lm_session_key, &session_key);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
if (!(flags & CLI_CRED_LANMAN_AUTH)) {
/* LM Key is still possible, just silly, so we do not
* allow it. Fortunetly all LM crypto is off by
* default and we require command line options to end
* up here */
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
}
if (!(flags & CLI_CRED_NTLM2)) {
/* NTLM2 is incompatible... */
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
}
if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
&& lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx) && lm_session_key.length == 16) {
DATA_BLOB new_session_key = data_blob_talloc(mem_ctx, NULL, 16);
if (lm_response.length == 24) {
SMBsesskeygen_lm_sess_key(lm_session_key.data, lm_response.data,
new_session_key.data);
} else {
static const uint8_t zeros[24];
SMBsesskeygen_lm_sess_key(lm_session_key.data, zeros,
new_session_key.data);
}
session_key = new_session_key;
dump_data_pw("LM session key\n", session_key.data, session_key.length);
}
/* Key exchange encryptes a new client-generated session key with
the password-derived key */
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
/* Make up a new session key */
uint8_t client_session_key[16];
generate_secret_buffer(client_session_key, sizeof(client_session_key));
/* Encrypt the new session key with the old one */
encrypted_session_key = data_blob_talloc(ntlmssp_state,
client_session_key, sizeof(client_session_key));
dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data, encrypted_session_key.length);
arcfour_crypt(encrypted_session_key.data, session_key.data, encrypted_session_key.length);
dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length);
/* Mark the new session key as the 'real' session key */
session_key = data_blob_talloc(mem_ctx, client_session_key, sizeof(client_session_key));
}
DEBUG(3, ("NTLMSSP: Set final flags:\n"));
debug_ntlmssp_flags(ntlmssp_state->neg_flags);
/* this generates the actual auth packet */
nt_status = msrpc_gen(mem_ctx,
out, auth_gen_string,
"NTLMSSP",
NTLMSSP_AUTH,
lm_response.data, lm_response.length,
nt_response.data, nt_response.length,
domain,
user,
cli_credentials_get_workstation(gensec_security->credentials),
encrypted_session_key.data, encrypted_session_key.length,
ntlmssp_state->neg_flags);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
return nt_status;
}
ntlmssp_state->session_key = session_key;
talloc_steal(ntlmssp_state, session_key.data);
talloc_steal(out_mem_ctx, out->data);
ntlmssp_state->expected_state = NTLMSSP_DONE;
if (gensec_security->want_features & (GENSEC_FEATURE_SIGN|GENSEC_FEATURE_SEAL)) {
nt_status = ntlmssp_sign_init(ntlmssp_state);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(1, ("Could not setup NTLMSSP signing/sealing system (error was: %s)\n",
nt_errstr(nt_status)));
talloc_free(mem_ctx);
return nt_status;
}
}
talloc_free(mem_ctx);
return NT_STATUS_OK;
}
/*
try a netlogon SamLogon
*/
bool test_netlogon_ex_ops(struct dcerpc_pipe *p, struct torture_context *tctx,
struct cli_credentials *credentials,
struct netlogon_creds_CredentialState *creds)
{
NTSTATUS status;
struct netr_LogonSamLogonEx r;
struct netr_NetworkInfo ninfo;
union netr_LogonLevel logon;
union netr_Validation validation;
uint8_t authoritative = 0;
uint32_t _flags = 0;
DATA_BLOB names_blob, chal, lm_resp, nt_resp;
int i;
int flags = CLI_CRED_NTLM_AUTH;
struct dcerpc_binding_handle *b = p->binding_handle;
if (lpcfg_client_lanman_auth(tctx->lp_ctx)) {
flags |= CLI_CRED_LANMAN_AUTH;
}
if (lpcfg_client_ntlmv2_auth(tctx->lp_ctx)) {
flags |= CLI_CRED_NTLMv2_AUTH;
}
cli_credentials_get_ntlm_username_domain(cmdline_credentials, tctx,
&ninfo.identity_info.account_name.string,
&ninfo.identity_info.domain_name.string);
generate_random_buffer(ninfo.challenge,
sizeof(ninfo.challenge));
chal = data_blob_const(ninfo.challenge,
sizeof(ninfo.challenge));
names_blob = NTLMv2_generate_names_blob(tctx, cli_credentials_get_workstation(credentials),
cli_credentials_get_domain(credentials));
status = cli_credentials_get_ntlm_response(cmdline_credentials, tctx,
&flags,
chal,
names_blob,
&lm_resp, &nt_resp,
NULL, NULL);
torture_assert_ntstatus_ok(tctx, status,
"cli_credentials_get_ntlm_response failed");
ninfo.lm.data = lm_resp.data;
ninfo.lm.length = lm_resp.length;
ninfo.nt.data = nt_resp.data;
ninfo.nt.length = nt_resp.length;
ninfo.identity_info.parameter_control = 0;
ninfo.identity_info.logon_id_low = 0;
ninfo.identity_info.logon_id_high = 0;
ninfo.identity_info.workstation.string = cli_credentials_get_workstation(credentials);
logon.network = &ninfo;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.logon_level = 2;
r.in.logon= &logon;
r.in.flags = &_flags;
r.out.validation = &validation;
r.out.authoritative = &authoritative;
r.out.flags = &_flags;
torture_comment(tctx,
"Testing LogonSamLogonEx with name %s\n",
ninfo.identity_info.account_name.string);
for (i=2;i<3;i++) {
r.in.validation_level = i;
torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogonEx_r(b, tctx, &r),
"LogonSamLogon failed");
torture_assert_ntstatus_ok(tctx, r.out.result, "LogonSamLogon failed");
}
return true;
}
/*
try a netlogon SamLogon
*/
BOOL test_netlogon_ex_ops(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx,
struct cli_credentials *credentials,
struct creds_CredentialState *creds)
{
NTSTATUS status;
struct netr_LogonSamLogonEx r;
struct netr_NetworkInfo ninfo;
DATA_BLOB names_blob, chal, lm_resp, nt_resp;
int i;
BOOL ret = True;
int flags = CLI_CRED_NTLM_AUTH;
if (lp_client_lanman_auth()) {
flags |= CLI_CRED_LANMAN_AUTH;
}
if (lp_client_ntlmv2_auth()) {
flags |= CLI_CRED_NTLMv2_AUTH;
}
cli_credentials_get_ntlm_username_domain(cmdline_credentials, mem_ctx,
&ninfo.identity_info.account_name.string,
&ninfo.identity_info.domain_name.string);
generate_random_buffer(ninfo.challenge,
sizeof(ninfo.challenge));
chal = data_blob_const(ninfo.challenge,
sizeof(ninfo.challenge));
names_blob = NTLMv2_generate_names_blob(mem_ctx, cli_credentials_get_workstation(credentials),
cli_credentials_get_domain(credentials));
status = cli_credentials_get_ntlm_response(cmdline_credentials, mem_ctx,
&flags,
chal,
names_blob,
&lm_resp, &nt_resp,
NULL, NULL);
if (!NT_STATUS_IS_OK(status)) {
printf("cli_credentials_get_ntlm_response failed: %s\n",
nt_errstr(status));
return False;
}
ninfo.lm.data = lm_resp.data;
ninfo.lm.length = lm_resp.length;
ninfo.nt.data = nt_resp.data;
ninfo.nt.length = nt_resp.length;
ninfo.identity_info.parameter_control = 0;
ninfo.identity_info.logon_id_low = 0;
ninfo.identity_info.logon_id_high = 0;
ninfo.identity_info.workstation.string = cli_credentials_get_workstation(credentials);
r.in.server_name = talloc_asprintf(mem_ctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.logon_level = 2;
r.in.logon.network = &ninfo;
r.in.flags = 0;
printf("Testing LogonSamLogonEx with name %s\n", ninfo.identity_info.account_name.string);
for (i=2;i<3;i++) {
r.in.validation_level = i;
status = dcerpc_netr_LogonSamLogonEx(p, mem_ctx, &r);
if (!NT_STATUS_IS_OK(status)) {
printf("LogonSamLogon failed: %s\n",
nt_errstr(status));
return False;
}
}
return ret;
}
NTSTATUS ntlmssp_client_challenge(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
const DATA_BLOB in, DATA_BLOB *out)
{
struct gensec_ntlmssp_context *gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
uint32_t chal_flags, ntlmssp_command, unkn1 = 0, unkn2 = 0;
DATA_BLOB server_domain_blob;
DATA_BLOB challenge_blob;
DATA_BLOB target_info = data_blob(NULL, 0);
char *server_domain;
const char *chal_parse_string;
const char *chal_parse_string_short = NULL;
const char *auth_gen_string;
DATA_BLOB lm_response = data_blob(NULL, 0);
DATA_BLOB nt_response = data_blob(NULL, 0);
DATA_BLOB session_key = data_blob(NULL, 0);
DATA_BLOB lm_session_key = data_blob(NULL, 0);
DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
NTSTATUS nt_status;
int flags = 0;
const char *user = NULL, *domain = NULL, *workstation = NULL;
bool is_anonymous = false;
const DATA_BLOB version_blob = ntlmssp_version_blob();
TALLOC_CTX *mem_ctx = talloc_new(out_mem_ctx);
if (!mem_ctx) {
return NT_STATUS_NO_MEMORY;
}
if (!msrpc_parse(mem_ctx,
&in, "CdBd",
"NTLMSSP",
&ntlmssp_command,
&server_domain_blob,
&chal_flags)) {
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n"));
dump_data(2, in.data, in.length);
talloc_free(mem_ctx);
return NT_STATUS_INVALID_PARAMETER;
}
data_blob_free(&server_domain_blob);
DEBUG(3, ("Got challenge flags:\n"));
debug_ntlmssp_flags(chal_flags);
ntlmssp_handle_neg_flags(ntlmssp_state, chal_flags, ntlmssp_state->allow_lm_key);
if (ntlmssp_state->unicode) {
if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdUdbddB";
} else {
chal_parse_string = "CdUdbdd";
chal_parse_string_short = "CdUdb";
}
auth_gen_string = "CdBBUUUBdb";
} else {
if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) {
chal_parse_string = "CdAdbddB";
} else {
chal_parse_string = "CdAdbdd";
chal_parse_string_short = "CdAdb";
}
auth_gen_string = "CdBBAAABdb";
}
if (!msrpc_parse(mem_ctx,
&in, chal_parse_string,
"NTLMSSP",
&ntlmssp_command,
&server_domain,
&chal_flags,
&challenge_blob, 8,
&unkn1, &unkn2,
&target_info)) {
bool ok = false;
DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n"));
if (chal_parse_string_short != NULL) {
/*
* In the case where NTLMSSP_NEGOTIATE_TARGET_INFO
* is not used, some NTLMSSP servers don't return
* the unused unkn1 and unkn2 fields.
* See bug:
* https://bugzilla.samba.org/show_bug.cgi?id=10016
* for packet traces.
* Try and parse again without them.
*/
ok = msrpc_parse(mem_ctx,
&in, chal_parse_string_short,
"NTLMSSP",
&ntlmssp_command,
&server_domain,
&chal_flags,
&challenge_blob, 8);
if (!ok) {
DEBUG(1, ("Failed to short parse "
"the NTLMSSP Challenge: (#2)\n"));
}
}
if (!ok) {
dump_data(2, in.data, in.length);
talloc_free(mem_ctx);
return NT_STATUS_INVALID_PARAMETER;
}
}
if (chal_flags & NTLMSSP_TARGET_TYPE_SERVER) {
ntlmssp_state->server.is_standalone = true;
} else {
ntlmssp_state->server.is_standalone = false;
}
/* TODO: parse struct_blob and fill in the rest */
ntlmssp_state->server.netbios_name = "";
ntlmssp_state->server.netbios_domain = talloc_move(ntlmssp_state, &server_domain);
ntlmssp_state->server.dns_name = "";
ntlmssp_state->server.dns_domain = "";
if (challenge_blob.length != 8) {
talloc_free(mem_ctx);
return NT_STATUS_INVALID_PARAMETER;
}
is_anonymous = cli_credentials_is_anonymous(gensec_security->credentials);
cli_credentials_get_ntlm_username_domain(gensec_security->credentials, mem_ctx,
&user, &domain);
workstation = cli_credentials_get_workstation(gensec_security->credentials);
if (user == NULL) {
DEBUG(10, ("User is NULL, returning INVALID_PARAMETER\n"));
return NT_STATUS_INVALID_PARAMETER;
}
if (domain == NULL) {
DEBUG(10, ("Domain is NULL, returning INVALID_PARAMETER\n"));
return NT_STATUS_INVALID_PARAMETER;
}
if (workstation == NULL) {
DEBUG(10, ("Workstation is NULL, returning INVALID_PARAMETER\n"));
return NT_STATUS_INVALID_PARAMETER;
}
if (is_anonymous) {
ntlmssp_state->neg_flags |= NTLMSSP_ANONYMOUS;
/*
* don't use the ccache for anonymous auth
*/
ntlmssp_state->use_ccache = false;
}
if (ntlmssp_state->use_ccache) {
struct samr_Password *nt_hash = NULL;
/*
* If we have a password given we don't
* use the ccache
*/
nt_hash = cli_credentials_get_nt_hash(gensec_security->credentials,
mem_ctx);
if (nt_hash != NULL) {
ZERO_STRUCTP(nt_hash);
TALLOC_FREE(nt_hash);
ntlmssp_state->use_ccache = false;
}
}
if (ntlmssp_state->use_ccache) {
struct wbcCredentialCacheParams params;
struct wbcCredentialCacheInfo *info = NULL;
struct wbcAuthErrorInfo *error = NULL;
struct wbcNamedBlob auth_blobs[1];
const struct wbcBlob *wbc_auth_blob = NULL;
const struct wbcBlob *wbc_session_key = NULL;
wbcErr wbc_status;
int i;
params.account_name = user;
params.domain_name = domain;
params.level = WBC_CREDENTIAL_CACHE_LEVEL_NTLMSSP;
auth_blobs[0].name = "challenge_blob";
auth_blobs[0].flags = 0;
auth_blobs[0].blob.data = in.data;
auth_blobs[0].blob.length = in.length;
params.num_blobs = ARRAY_SIZE(auth_blobs);
params.blobs = auth_blobs;
wbc_status = wbcCredentialCache(¶ms, &info, &error);
wbcFreeMemory(error);
if (!WBC_ERROR_IS_OK(wbc_status)) {
return NT_STATUS_WRONG_CREDENTIAL_HANDLE;
}
for (i=0; i<info->num_blobs; i++) {
if (strequal(info->blobs[i].name, "auth_blob")) {
wbc_auth_blob = &info->blobs[i].blob;
}
if (strequal(info->blobs[i].name, "session_key")) {
wbc_session_key = &info->blobs[i].blob;
}
}
if ((wbc_auth_blob == NULL) || (wbc_session_key == NULL)) {
wbcFreeMemory(info);
return NT_STATUS_WRONG_CREDENTIAL_HANDLE;
}
session_key = data_blob_talloc(mem_ctx,
wbc_session_key->data,
wbc_session_key->length);
if (session_key.length != wbc_session_key->length) {
wbcFreeMemory(info);
return NT_STATUS_NO_MEMORY;
}
*out = data_blob_talloc(mem_ctx,
wbc_auth_blob->data,
wbc_auth_blob->length);
if (out->length != wbc_auth_blob->length) {
wbcFreeMemory(info);
return NT_STATUS_NO_MEMORY;
}
wbcFreeMemory(info);
goto done;
}
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
flags |= CLI_CRED_NTLM2;
}
if (ntlmssp_state->use_ntlmv2) {
flags |= CLI_CRED_NTLMv2_AUTH;
}
if (ntlmssp_state->use_nt_response) {
flags |= CLI_CRED_NTLM_AUTH;
}
if (lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx)) {
flags |= CLI_CRED_LANMAN_AUTH;
}
nt_status = cli_credentials_get_ntlm_response(gensec_security->credentials, mem_ctx,
&flags, challenge_blob, target_info,
&lm_response, &nt_response,
&lm_session_key, &session_key);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
if (!(flags & CLI_CRED_LANMAN_AUTH)) {
/* LM Key is still possible, just silly, so we do not
* allow it. Fortunetly all LM crypto is off by
* default and we require command line options to end
* up here */
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
}
if (!(flags & CLI_CRED_NTLM2)) {
/* NTLM2 is incompatible... */
ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
}
if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
&& lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx) && lm_session_key.length == 16) {
DATA_BLOB new_session_key = data_blob_talloc(mem_ctx, NULL, 16);
if (lm_response.length == 24) {
SMBsesskeygen_lm_sess_key(lm_session_key.data, lm_response.data,
new_session_key.data);
} else {
static const uint8_t zeros[24];
SMBsesskeygen_lm_sess_key(lm_session_key.data, zeros,
new_session_key.data);
}
session_key = new_session_key;
dump_data_pw("LM session key\n", session_key.data, session_key.length);
}
/* Key exchange encryptes a new client-generated session key with
the password-derived key */
if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
/* Make up a new session key */
uint8_t client_session_key[16];
generate_secret_buffer(client_session_key, sizeof(client_session_key));
/* Encrypt the new session key with the old one */
encrypted_session_key = data_blob_talloc(ntlmssp_state,
client_session_key, sizeof(client_session_key));
dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data, encrypted_session_key.length);
arcfour_crypt(encrypted_session_key.data, session_key.data, encrypted_session_key.length);
dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length);
/* Mark the new session key as the 'real' session key */
session_key = data_blob_talloc(mem_ctx, client_session_key, sizeof(client_session_key));
}
/* this generates the actual auth packet */
nt_status = msrpc_gen(mem_ctx,
out, auth_gen_string,
"NTLMSSP",
NTLMSSP_AUTH,
lm_response.data, lm_response.length,
nt_response.data, nt_response.length,
domain,
user,
workstation,
encrypted_session_key.data, encrypted_session_key.length,
ntlmssp_state->neg_flags,
version_blob.data, version_blob.length);
if (!NT_STATUS_IS_OK(nt_status)) {
talloc_free(mem_ctx);
return nt_status;
}
done:
ntlmssp_state->session_key = session_key;
talloc_steal(ntlmssp_state, session_key.data);
DEBUG(3, ("NTLMSSP: Set final flags:\n"));
debug_ntlmssp_flags(ntlmssp_state->neg_flags);
talloc_steal(out_mem_ctx, out->data);
ntlmssp_state->expected_state = NTLMSSP_DONE;
if (gensec_security->want_features & (GENSEC_FEATURE_SIGN|GENSEC_FEATURE_SEAL)) {
nt_status = ntlmssp_sign_init(ntlmssp_state);
if (!NT_STATUS_IS_OK(nt_status)) {
DEBUG(1, ("Could not setup NTLMSSP signing/sealing system (error was: %s)\n",
nt_errstr(nt_status)));
talloc_free(mem_ctx);
return nt_status;
}
}
talloc_free(mem_ctx);
return NT_STATUS_OK;
}
/*
send a nt1 style session setup
*/
static NTSTATUS session_setup_nt1(struct composite_context *c,
struct smbcli_session *session,
struct smb_composite_sesssetup *io,
struct smbcli_request **req)
{
NTSTATUS nt_status = NT_STATUS_INTERNAL_ERROR;
struct sesssetup_state *state = talloc_get_type(c->private_data,
struct sesssetup_state);
const char *domain = cli_credentials_get_domain(io->in.credentials);
/*
* domain controllers tend to reject the NTLM v2 blob
* if the netbiosname is not valid (e.g. IP address or FQDN)
* so just leave it away (as Windows client do)
*/
DATA_BLOB names_blob = NTLMv2_generate_names_blob(state, NULL, domain);
DATA_BLOB session_key = data_blob(NULL, 0);
int flags = CLI_CRED_NTLM_AUTH;
if (session->options.lanman_auth) {
flags |= CLI_CRED_LANMAN_AUTH;
}
if (session->options.ntlmv2_auth) {
flags |= CLI_CRED_NTLMv2_AUTH;
}
state->setup.nt1.level = RAW_SESSSETUP_NT1;
state->setup.nt1.in.bufsize = session->transport->options.max_xmit;
state->setup.nt1.in.mpx_max = session->transport->options.max_mux;
state->setup.nt1.in.vc_num = 1;
state->setup.nt1.in.sesskey = io->in.sesskey;
state->setup.nt1.in.capabilities = io->in.capabilities;
state->setup.nt1.in.os = "Unix";
state->setup.nt1.in.lanman = talloc_asprintf(state, "Samba %s", SAMBA_VERSION_STRING);
cli_credentials_get_ntlm_username_domain(io->in.credentials, state,
&state->setup.nt1.in.user,
&state->setup.nt1.in.domain);
if (session->transport->negotiate.sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) {
nt_status = cli_credentials_get_ntlm_response(io->in.credentials, state,
&flags,
session->transport->negotiate.secblob,
names_blob,
&state->setup.nt1.in.password1,
&state->setup.nt1.in.password2,
NULL, &session_key);
NT_STATUS_NOT_OK_RETURN(nt_status);
} else if (session->options.plaintext_auth) {
const char *password = cli_credentials_get_password(io->in.credentials);
state->setup.nt1.in.password1 = data_blob_talloc(state, password, strlen(password));
state->setup.nt1.in.password2 = data_blob(NULL, 0);
} else {
/* could match windows client and return 'cannot logon from this workstation', but it just confuses everybody */
return NT_STATUS_INVALID_PARAMETER;
}
*req = smb_raw_sesssetup_send(session, &state->setup);
if (!*req) {
return NT_STATUS_NO_MEMORY;
}
if (NT_STATUS_IS_OK(nt_status)) {
smb1cli_conn_activate_signing(session->transport->conn,
session_key,
state->setup.nt1.in.password2);
nt_status = smb1cli_session_set_session_key(session->smbXcli,
session_key);
data_blob_free(&session_key);
if (!NT_STATUS_IS_OK(nt_status)) {
return nt_status;
}
}
return (*req)->status;
}
