/*
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 libnet_SamSync_netlogon(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_SamSync *r)
{
NTSTATUS nt_status, dbsync_nt_status;
TALLOC_CTX *samsync_ctx, *loop_ctx, *delta_ctx;
struct netlogon_creds_CredentialState *creds;
struct netr_DatabaseSync dbsync;
struct netr_Authenticator credential, return_authenticator;
struct netr_DELTA_ENUM_ARRAY *delta_enum_array = NULL;
struct cli_credentials *machine_account;
struct dcerpc_pipe *p;
struct libnet_context *machine_net_ctx;
struct libnet_RpcConnect *c;
struct libnet_SamSync_state *state;
const enum netr_SamDatabaseID database_ids[] = {SAM_DATABASE_DOMAIN, SAM_DATABASE_BUILTIN, SAM_DATABASE_PRIVS};
unsigned int i;
samsync_ctx = talloc_named(mem_ctx, 0, "SamSync top context");
if (!r->in.machine_account) {
machine_account = cli_credentials_init(samsync_ctx);
if (!machine_account) {
talloc_free(samsync_ctx);
return NT_STATUS_NO_MEMORY;
}
cli_credentials_set_conf(machine_account, ctx->lp_ctx);
nt_status = cli_credentials_set_machine_account(machine_account, ctx->lp_ctx);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_strdup(mem_ctx, "Could not obtain machine account password - are we joined to the domain?");
talloc_free(samsync_ctx);
return nt_status;
}
} else {
machine_account = r->in.machine_account;
}
/* We cannot do this unless we are a BDC. Check, before we get odd errors later */
if (cli_credentials_get_secure_channel_type(machine_account) != SEC_CHAN_BDC) {
r->out.error_string
= talloc_asprintf(mem_ctx,
"Our join to domain %s is not as a BDC (%d), please rejoin as a BDC",
cli_credentials_get_domain(machine_account),
cli_credentials_get_secure_channel_type(machine_account));
talloc_free(samsync_ctx);
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
c = talloc_zero(samsync_ctx, struct libnet_RpcConnect);
if (!c) {
r->out.error_string = NULL;
talloc_free(samsync_ctx);
return NT_STATUS_NO_MEMORY;
}
c->level = LIBNET_RPC_CONNECT_DC_INFO;
if (r->in.binding_string) {
c->in.binding = r->in.binding_string;
c->in.name = NULL;
} else {
c->in.binding = NULL;
c->in.name = cli_credentials_get_domain(machine_account);
}
/* prepare connect to the NETLOGON pipe of PDC */
c->in.dcerpc_iface = &ndr_table_netlogon;
/* We must do this as the machine, not as any command-line
* user. So we override the credentials in the
* libnet_context */
machine_net_ctx = talloc(samsync_ctx, struct libnet_context);
if (!machine_net_ctx) {
r->out.error_string = NULL;
talloc_free(samsync_ctx);
return NT_STATUS_NO_MEMORY;
}
*machine_net_ctx = *ctx;
machine_net_ctx->cred = machine_account;
/* connect to the NETLOGON pipe of the PDC */
nt_status = libnet_RpcConnect(machine_net_ctx, samsync_ctx, c);
if (!NT_STATUS_IS_OK(nt_status)) {
if (r->in.binding_string) {
r->out.error_string = talloc_asprintf(mem_ctx,
"Connection to NETLOGON pipe of DC %s failed: %s",
r->in.binding_string, c->out.error_string);
} else {
r->out.error_string = talloc_asprintf(mem_ctx,
"Connection to NETLOGON pipe of DC for %s failed: %s",
c->in.name, c->out.error_string);
}
talloc_free(samsync_ctx);
return nt_status;
}
/* This makes a new pipe, on which we can do schannel. We
* should do this in the RpcConnect code, but the abstaction
* layers do not suit yet */
nt_status = dcerpc_secondary_connection(c->out.dcerpc_pipe, &p,
c->out.dcerpc_pipe->binding);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_asprintf(mem_ctx,
"Secondary connection to NETLOGON pipe of DC %s failed: %s",
dcerpc_server_name(p), nt_errstr(nt_status));
talloc_free(samsync_ctx);
return nt_status;
}
nt_status = dcerpc_bind_auth_schannel(samsync_ctx, p, &ndr_table_netlogon,
machine_account, ctx->lp_ctx, DCERPC_AUTH_LEVEL_PRIVACY);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_asprintf(mem_ctx,
"SCHANNEL authentication to NETLOGON pipe of DC %s failed: %s",
dcerpc_server_name(p), nt_errstr(nt_status));
talloc_free(samsync_ctx);
return nt_status;
}
state = talloc(samsync_ctx, struct libnet_SamSync_state);
if (!state) {
r->out.error_string = NULL;
talloc_free(samsync_ctx);
return nt_status;
}
state->domain_name = c->out.domain_name;
state->domain_sid = c->out.domain_sid;
state->realm = c->out.realm;
state->domain_guid = c->out.guid;
state->machine_net_ctx = machine_net_ctx;
state->netlogon_pipe = p;
/* initialise the callback layer. It may wish to contact the
* server with ldap, now we know the name */
if (r->in.init_fn) {
char *error_string;
nt_status = r->in.init_fn(samsync_ctx,
r->in.fn_ctx,
state,
&error_string);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_steal(mem_ctx, error_string);
talloc_free(samsync_ctx);
return nt_status;
}
}
/* get NETLOGON credentials */
nt_status = dcerpc_schannel_creds(p->conn->security_state.generic_state, samsync_ctx, &creds);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_strdup(mem_ctx, "Could not obtain NETLOGON credentials from DCERPC/GENSEC layer");
talloc_free(samsync_ctx);
return nt_status;
}
/* Setup details for the synchronisation */
ZERO_STRUCT(return_authenticator);
dbsync.in.logon_server = talloc_asprintf(samsync_ctx, "\\\\%s", dcerpc_server_name(p));
dbsync.in.computername = cli_credentials_get_workstation(machine_account);
dbsync.in.preferredmaximumlength = (uint32_t)-1;
dbsync.in.return_authenticator = &return_authenticator;
dbsync.out.return_authenticator = &return_authenticator;
dbsync.out.delta_enum_array = &delta_enum_array;
for (i=0;i< ARRAY_SIZE(database_ids); i++) {
uint32_t sync_context = 0;
dbsync.in.database_id = database_ids[i];
dbsync.in.sync_context = &sync_context;
dbsync.out.sync_context = &sync_context;
do {
uint32_t d;
loop_ctx = talloc_named(samsync_ctx, 0, "DatabaseSync loop context");
netlogon_creds_client_authenticator(creds, &credential);
dbsync.in.credential = &credential;
dbsync_nt_status = dcerpc_netr_DatabaseSync_r(p->binding_handle, loop_ctx, &dbsync);
if (NT_STATUS_IS_OK(dbsync_nt_status) && !NT_STATUS_IS_OK(dbsync.out.result)) {
dbsync_nt_status = dbsync.out.result;
}
if (!NT_STATUS_IS_OK(dbsync_nt_status) &&
!NT_STATUS_EQUAL(dbsync_nt_status, STATUS_MORE_ENTRIES)) {
r->out.error_string = talloc_asprintf(mem_ctx, "DatabaseSync failed - %s", nt_errstr(nt_status));
talloc_free(samsync_ctx);
return nt_status;
}
if (!netlogon_creds_client_check(creds, &dbsync.out.return_authenticator->cred)) {
r->out.error_string = talloc_strdup(mem_ctx, "Credential chaining on incoming DatabaseSync failed");
talloc_free(samsync_ctx);
return NT_STATUS_ACCESS_DENIED;
}
dbsync.in.sync_context = dbsync.out.sync_context;
/* For every single remote 'delta' entry: */
for (d=0; d < delta_enum_array->num_deltas; d++) {
char *error_string = NULL;
delta_ctx = talloc_named(loop_ctx, 0, "DatabaseSync delta context");
/* 'Fix' elements, by decrypting and
* de-obfuscating the data */
nt_status = samsync_fix_delta(delta_ctx,
creds,
dbsync.in.database_id,
&delta_enum_array->delta_enum[d]);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_steal(mem_ctx, error_string);
talloc_free(samsync_ctx);
return nt_status;
}
/* Now call the callback. This will
* do something like print the data or
* write to an ldb */
nt_status = r->in.delta_fn(delta_ctx,
r->in.fn_ctx,
dbsync.in.database_id,
&delta_enum_array->delta_enum[d],
&error_string);
if (!NT_STATUS_IS_OK(nt_status)) {
r->out.error_string = talloc_steal(mem_ctx, error_string);
talloc_free(samsync_ctx);
return nt_status;
}
talloc_free(delta_ctx);
}
talloc_free(loop_ctx);
} while (NT_STATUS_EQUAL(dbsync_nt_status, STATUS_MORE_ENTRIES));
if (!NT_STATUS_IS_OK(dbsync_nt_status)) {
r->out.error_string = talloc_asprintf(mem_ctx, "libnet_SamSync_netlogon failed: unexpected inconsistancy. Should not get error %s here", nt_errstr(nt_status));
talloc_free(samsync_ctx);
return dbsync_nt_status;
}
nt_status = NT_STATUS_OK;
}
talloc_free(samsync_ctx);
return nt_status;
}
static NTSTATUS schannel_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
struct tevent_context *ev,
const DATA_BLOB in, DATA_BLOB *out)
{
struct schannel_state *state = (struct schannel_state *)gensec_security->private_data;
NTSTATUS status;
enum ndr_err_code ndr_err;
struct NL_AUTH_MESSAGE bind_schannel;
struct NL_AUTH_MESSAGE bind_schannel_ack;
struct netlogon_creds_CredentialState *creds;
const char *workstation;
const char *domain;
*out = data_blob(NULL, 0);
switch (gensec_security->gensec_role) {
case GENSEC_CLIENT:
if (state->state != SCHANNEL_STATE_START) {
/* we could parse the bind ack, but we don't know what it is yet */
return NT_STATUS_OK;
}
state->creds = cli_credentials_get_netlogon_creds(gensec_security->credentials);
if (state->creds == NULL) {
return NT_STATUS_INVALID_PARAMETER_MIX;
}
/*
* We need to create a reference here or we don't get
* updates performed on the credentials if we create a
* copy.
*/
state->creds = talloc_reference(state, state->creds);
if (state->creds == NULL) {
return NT_STATUS_NO_MEMORY;
}
bind_schannel.MessageType = NL_NEGOTIATE_REQUEST;
#if 0
/* to support this we'd need to have access to the full domain name */
/* 0x17, 23 */
bind_schannel.Flags = NL_FLAG_OEM_NETBIOS_DOMAIN_NAME |
NL_FLAG_OEM_NETBIOS_COMPUTER_NAME |
NL_FLAG_UTF8_DNS_DOMAIN_NAME |
NL_FLAG_UTF8_NETBIOS_COMPUTER_NAME;
bind_schannel.oem_netbios_domain.a = cli_credentials_get_domain(gensec_security->credentials);
bind_schannel.oem_netbios_computer.a = cli_credentials_get_workstation(gensec_security->credentials);
bind_schannel.utf8_dns_domain = cli_credentials_get_realm(gensec_security->credentials);
/* w2k3 refuses us if we use the full DNS workstation?
why? perhaps because we don't fill in the dNSHostName
attribute in the machine account? */
bind_schannel.utf8_netbios_computer = cli_credentials_get_workstation(gensec_security->credentials);
#else
bind_schannel.Flags = NL_FLAG_OEM_NETBIOS_DOMAIN_NAME |
NL_FLAG_OEM_NETBIOS_COMPUTER_NAME;
bind_schannel.oem_netbios_domain.a = cli_credentials_get_domain(gensec_security->credentials);
bind_schannel.oem_netbios_computer.a = cli_credentials_get_workstation(gensec_security->credentials);
#endif
ndr_err = ndr_push_struct_blob(out, out_mem_ctx, &bind_schannel,
(ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
status = ndr_map_error2ntstatus(ndr_err);
DEBUG(3, ("Could not create schannel bind: %s\n",
nt_errstr(status)));
return status;
}
state->state = SCHANNEL_STATE_UPDATE_1;
return NT_STATUS_MORE_PROCESSING_REQUIRED;
case GENSEC_SERVER:
if (state->state != SCHANNEL_STATE_START) {
/* no third leg on this protocol */
return NT_STATUS_INVALID_PARAMETER;
}
/* parse the schannel startup blob */
ndr_err = ndr_pull_struct_blob(&in, out_mem_ctx, &bind_schannel,
(ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_MESSAGE);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
status = ndr_map_error2ntstatus(ndr_err);
DEBUG(3, ("Could not parse incoming schannel bind: %s\n",
nt_errstr(status)));
return status;
}
if (bind_schannel.Flags & NL_FLAG_OEM_NETBIOS_DOMAIN_NAME) {
domain = bind_schannel.oem_netbios_domain.a;
if (strcasecmp_m(domain, lpcfg_workgroup(gensec_security->settings->lp_ctx)) != 0) {
DEBUG(3, ("Request for schannel to incorrect domain: %s != our domain %s\n",
domain, lpcfg_workgroup(gensec_security->settings->lp_ctx)));
return NT_STATUS_LOGON_FAILURE;
}
} else if (bind_schannel.Flags & NL_FLAG_UTF8_DNS_DOMAIN_NAME) {
domain = bind_schannel.utf8_dns_domain.u;
if (strcasecmp_m(domain, lpcfg_dnsdomain(gensec_security->settings->lp_ctx)) != 0) {
DEBUG(3, ("Request for schannel to incorrect domain: %s != our domain %s\n",
domain, lpcfg_dnsdomain(gensec_security->settings->lp_ctx)));
return NT_STATUS_LOGON_FAILURE;
}
} else {
DEBUG(3, ("Request for schannel to without domain\n"));
return NT_STATUS_LOGON_FAILURE;
}
if (bind_schannel.Flags & NL_FLAG_OEM_NETBIOS_COMPUTER_NAME) {
workstation = bind_schannel.oem_netbios_computer.a;
} else if (bind_schannel.Flags & NL_FLAG_UTF8_NETBIOS_COMPUTER_NAME) {
workstation = bind_schannel.utf8_netbios_computer.u;
} else {
DEBUG(3, ("Request for schannel to without netbios workstation\n"));
return NT_STATUS_LOGON_FAILURE;
}
status = schannel_get_creds_state(out_mem_ctx,
gensec_security->settings->lp_ctx,
workstation, &creds);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(3, ("Could not find session key for attempted schannel connection from %s: %s\n",
workstation, nt_errstr(status)));
if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_HANDLE)) {
return NT_STATUS_LOGON_FAILURE;
}
return status;
}
state->creds = talloc_steal(state, creds);
bind_schannel_ack.MessageType = NL_NEGOTIATE_RESPONSE;
bind_schannel_ack.Flags = 0;
bind_schannel_ack.Buffer.dummy = 0x6c0000; /* actually I think
* this does not have
* any meaning here
* - gd */
ndr_err = ndr_push_struct_blob(out, out_mem_ctx, &bind_schannel_ack,
(ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
status = ndr_map_error2ntstatus(ndr_err);
DEBUG(3, ("Could not return schannel bind ack for client %s: %s\n",
workstation, nt_errstr(status)));
return status;
}
state->state = SCHANNEL_STATE_UPDATE_1;
return NT_STATUS_OK;
}
return NT_STATUS_INVALID_PARAMETER;
}
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;
}
NTSTATUS gensec_ntlmssp_client_start(struct gensec_security *gensec_security)
{
struct gensec_ntlmssp_context *gensec_ntlmssp;
struct ntlmssp_state *ntlmssp_state;
NTSTATUS nt_status;
nt_status = gensec_ntlmssp_start(gensec_security);
NT_STATUS_NOT_OK_RETURN(nt_status);
gensec_ntlmssp =
talloc_get_type_abort(gensec_security->private_data,
struct gensec_ntlmssp_context);
ntlmssp_state = talloc_zero(gensec_ntlmssp,
struct ntlmssp_state);
if (!ntlmssp_state) {
return NT_STATUS_NO_MEMORY;
}
gensec_ntlmssp->ntlmssp_state = ntlmssp_state;
ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
ntlmssp_state->role = NTLMSSP_CLIENT;
ntlmssp_state->client.netbios_domain = lpcfg_workgroup(gensec_security->settings->lp_ctx);
ntlmssp_state->client.netbios_name = cli_credentials_get_workstation(gensec_security->credentials);
ntlmssp_state->unicode = gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "unicode", true);
ntlmssp_state->use_nt_response = gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "send_nt_reponse", true);
ntlmssp_state->allow_lm_key = (lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx)
&& (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "allow_lm_key", false)
|| gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "lm_key", false)));
ntlmssp_state->use_ntlmv2 = lpcfg_client_ntlmv2_auth(gensec_security->settings->lp_ctx);
ntlmssp_state->expected_state = NTLMSSP_INITIAL;
ntlmssp_state->neg_flags =
NTLMSSP_NEGOTIATE_NTLM |
NTLMSSP_REQUEST_TARGET;
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "128bit", true)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_128;
}
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "56bit", false)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_56;
}
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "lm_key", false)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
}
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "keyexchange", true)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
}
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "alwayssign", true)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
}
if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "ntlm2", true)) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
} else {
/* apparently we can't do ntlmv2 if we don't do ntlm2 */
ntlmssp_state->use_ntlmv2 = false;
}
if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
/*
* We need to set this to allow a later SetPassword
* via the SAMR pipe to succeed. Strange.... We could
* also add NTLMSSP_NEGOTIATE_SEAL here. JRA.
*
* Without this, Windows will not create the master key
* that it thinks is only used for NTLMSSP signing and
* sealing. (It is actually pulled out and used directly)
*/
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
}
if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
}
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;
}
static PyObject *py_creds_get_workstation(PyObject *self, PyObject *unused)
{
return PyString_FromStringOrNULL(cli_credentials_get_workstation(PyCredentials_AsCliCredentials(self)));
}
static bool test_PACVerify(struct torture_context *tctx,
struct dcerpc_pipe *p,
struct cli_credentials *credentials)
{
NTSTATUS status;
struct netr_LogonSamLogon r;
union netr_LogonLevel logon;
union netr_Validation validation;
uint8_t authoritative;
struct netr_Authenticator return_authenticator;
struct netr_GenericInfo generic;
struct netr_Authenticator auth, auth2;
struct netlogon_creds_CredentialState *creds;
struct gensec_security *gensec_client_context;
struct gensec_security *gensec_server_context;
DATA_BLOB client_to_server, server_to_client, pac_wrapped, payload;
struct PAC_Validate pac_wrapped_struct;
enum ndr_err_code ndr_err;
struct auth_session_info *session_info;
char *tmp_dir;
TALLOC_CTX *tmp_ctx = talloc_new(tctx);
torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
if (!test_SetupCredentials2(p, tctx, NETLOGON_NEG_AUTH2_ADS_FLAGS,
credentials, SEC_CHAN_BDC,
&creds)) {
return false;
}
status = torture_temp_dir(tctx, "PACVerify", &tmp_dir);
torture_assert_ntstatus_ok(tctx, status, "torture_temp_dir failed");
status = gensec_client_start(tctx, &gensec_client_context, tctx->ev,
lp_gensec_settings(tctx, tctx->lp_ctx));
torture_assert_ntstatus_ok(tctx, status, "gensec_client_start (client) failed");
status = gensec_set_target_hostname(gensec_client_context, TEST_MACHINE_NAME);
status = gensec_set_credentials(gensec_client_context, cmdline_credentials);
torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (client) failed");
status = gensec_start_mech_by_sasl_name(gensec_client_context, "GSSAPI");
torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (client) failed");
status = gensec_server_start(tctx, tctx->ev,
lp_gensec_settings(tctx, tctx->lp_ctx),
NULL, &gensec_server_context);
torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
status = gensec_set_credentials(gensec_server_context, credentials);
torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
status = gensec_start_mech_by_sasl_name(gensec_server_context, "GSSAPI");
torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (server) failed");
server_to_client = data_blob(NULL, 0);
do {
/* Do a client-server update dance */
status = gensec_update(gensec_client_context, tmp_ctx, server_to_client, &client_to_server);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
;
torture_assert_ntstatus_ok(tctx, status, "gensec_update (client) failed");
}
status = gensec_update(gensec_server_context, tmp_ctx, client_to_server, &server_to_client);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
;
torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
}
if (NT_STATUS_IS_OK(status)) {
break;
}
} while (1);
/* Extract the PAC using Samba's code */
status = gensec_session_info(gensec_server_context, &session_info);
torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
pac_wrapped_struct.ChecksumAndSignature = payload
= data_blob_talloc(tmp_ctx, NULL,
pac_wrapped_struct.ChecksumLength
+ pac_wrapped_struct.SignatureLength);
memcpy(&payload.data[0],
session_info->server_info->pac_srv_sig.signature.data,
pac_wrapped_struct.ChecksumLength);
memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
session_info->server_info->pac_kdc_sig.signature.data,
pac_wrapped_struct.SignatureLength);
ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
(ndr_push_flags_fn_t)ndr_push_PAC_Validate);
torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
generic.length = pac_wrapped.length;
generic.data = pac_wrapped.data;
/* Validate it over the netlogon pipe */
generic.identity_info.parameter_control = 0;
generic.identity_info.logon_id_high = 0;
generic.identity_info.logon_id_low = 0;
generic.identity_info.domain_name.string = session_info->server_info->domain_name;
generic.identity_info.account_name.string = session_info->server_info->account_name;
generic.identity_info.workstation.string = TEST_MACHINE_NAME;
generic.package_name.string = "Kerberos";
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon = &logon;
r.in.logon_level = NetlogonGenericInformation;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
r.out.validation = &validation;
r.out.authoritative = &authoritative;
r.out.return_authenticator = &return_authenticator;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_ok(tctx, status, "LogonSamLogon failed");
/* This will break the signature nicely (even in the crypto wrapping), check we get a logon failure */
generic.data[generic.length-1]++;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
"Credential chaining failed");
/* This will break the parsing nicely (even in the crypto wrapping), check we get INVALID_PARAMETER */
generic.length--;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds,
&r.out.return_authenticator->cred),
"Credential chaining failed");
pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
/* Break the SignatureType */
pac_wrapped_struct.SignatureType++;
pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
pac_wrapped_struct.ChecksumAndSignature = payload
= data_blob_talloc(tmp_ctx, NULL,
pac_wrapped_struct.ChecksumLength
+ pac_wrapped_struct.SignatureLength);
memcpy(&payload.data[0],
session_info->server_info->pac_srv_sig.signature.data,
pac_wrapped_struct.ChecksumLength);
memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
session_info->server_info->pac_kdc_sig.signature.data,
pac_wrapped_struct.SignatureLength);
ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
(ndr_push_flags_fn_t)ndr_push_PAC_Validate);
torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
generic.length = pac_wrapped.length;
generic.data = pac_wrapped.data;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
"Credential chaining failed");
pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
pac_wrapped_struct.ChecksumAndSignature = payload
= data_blob_talloc(tmp_ctx, NULL,
pac_wrapped_struct.ChecksumLength
+ pac_wrapped_struct.SignatureLength);
memcpy(&payload.data[0],
session_info->server_info->pac_srv_sig.signature.data,
pac_wrapped_struct.ChecksumLength);
memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
session_info->server_info->pac_kdc_sig.signature.data,
pac_wrapped_struct.SignatureLength);
/* Break the signature length */
pac_wrapped_struct.SignatureLength++;
ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
(ndr_push_flags_fn_t)ndr_push_PAC_Validate);
torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
generic.length = pac_wrapped.length;
generic.data = pac_wrapped.data;
logon.generic = &generic;
ZERO_STRUCT(auth2);
netlogon_creds_client_authenticator(creds, &auth);
r.in.credential = &auth;
r.in.return_authenticator = &auth2;
r.in.logon_level = NetlogonGenericInformation;
r.in.logon = &logon;
r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
r.in.computer_name = cli_credentials_get_workstation(credentials);
r.in.validation_level = NetlogonValidationGenericInfo2;
status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
"Credential chaining 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;
}
