/* packet-dcerpc-krb5rpc.c * * Routines for dcerpc DCE/KRB5 interface * Copyright 2002, Jaime Fournier * This information is based off the released idl files from opengroup. * ftp://ftp.opengroup.org/pub/dce122/dce/src/security.tar.gz security/idl/krb5rpc.idl * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "config.h" #include #include #include "packet-dcerpc.h" #include "packet-kerberos.h" void proto_register_krb5rpc (void); void proto_reg_handoff_krb5rpc (void); static int proto_krb5rpc; static int ett_krb5rpc; static e_guid_t uuid_krb5rpc = { 0x8f73de50, 0x768c, 0x11ca, {0xbf, 0xfc, 0x08, 0x00, 0x1e, 0x03, 0x94, 0x31} }; static uint16_t ver_krb5rpc = 1; static int hf_krb5rpc_opnum; static int hf_krb5rpc_sendto_kdc_rqst_keysize; static int hf_krb5rpc_sendto_kdc_rqst_spare1; static int hf_krb5rpc_sendto_kdc_resp_len; static int hf_krb5rpc_sendto_kdc_resp_max; static int hf_krb5rpc_sendto_kdc_resp_spare1; static int hf_krb5rpc_sendto_kdc_resp_keysize; /* static int hf_krb5rpc_sendto_kdc_resp_st; */ static int hf_krb5rpc_krb5; static int ett_krb5rpc_krb5; static int krb5rpc_dissect_sendto_kdc_rqst (tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, dcerpc_info *di, uint8_t *drep) { uint32_t keysize, spare1, remain; proto_item *item; tvbuff_t *krb5_tvb; proto_tree *subtree; /* * [in] handle_t h, * [in] unsigned32 len, * [in, size_is(len)] * byte message[], * [in] unsigned32 out_buf_len, */ offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_krb5rpc_sendto_kdc_rqst_keysize, &keysize); offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_krb5rpc_sendto_kdc_rqst_spare1, &spare1); item = proto_tree_add_item (tree, hf_krb5rpc_krb5, tvb, offset, -1, ENC_NA); subtree = proto_item_add_subtree (item, ett_krb5rpc_krb5); remain = tvb_captured_length_remaining(tvb, offset); krb5_tvb = tvb_new_subset_length(tvb, offset, remain); offset = dissect_kerberos_main (krb5_tvb, pinfo, subtree, true, NULL); return offset; } static int krb5rpc_dissect_sendto_kdc_resp (tvbuff_t * tvb, int offset, packet_info * pinfo, proto_tree * tree, dcerpc_info *di, uint8_t *drep) { uint32_t resp_len, maxsize, spare1, keysize, remain; proto_item *item; tvbuff_t *krb5_tvb; proto_tree *subtree; /* * * [out] unsigned32 *resp_len, * [out, length_is(*resp_len), size_is(out_buf_len)] * byte out_buf[], * [out] error_status_t *st unsigned long * */ offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_krb5rpc_sendto_kdc_resp_len, &resp_len); offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_krb5rpc_sendto_kdc_resp_max, &maxsize); offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_krb5rpc_sendto_kdc_resp_spare1, &spare1); offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_krb5rpc_sendto_kdc_resp_keysize, &keysize); item = proto_tree_add_item (tree, hf_krb5rpc_krb5, tvb, offset, -1, ENC_NA); subtree = proto_item_add_subtree (item, ett_krb5rpc_krb5); remain = tvb_captured_length_remaining(tvb, offset); krb5_tvb = tvb_new_subset_length(tvb, offset, remain); offset = dissect_kerberos_main (krb5_tvb, pinfo, subtree, true, NULL); offset += 16; /* no idea what this is, probably just extended encrypted text. */ return offset; } static const dcerpc_sub_dissector krb5rpc_dissectors[] = { {0, "rsec_krb5rpc_sendto_kdc", krb5rpc_dissect_sendto_kdc_rqst, krb5rpc_dissect_sendto_kdc_resp}, {0, NULL, NULL, NULL}, }; void proto_register_krb5rpc (void) { static hf_register_info hf[] = { {&hf_krb5rpc_opnum, {"Opnum", "krb5rpc.opnum", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, {&hf_krb5rpc_sendto_kdc_rqst_keysize, {"Request keysize", "krb5rpc.sendto_kdc_rqst_keysize", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, {&hf_krb5rpc_sendto_kdc_rqst_spare1, {"Request spare1", "krb5rpc.sendto_kdc_rqst_spare1", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, {&hf_krb5rpc_sendto_kdc_resp_len, {"Response length", "krb5rpc.sendto_kdc_resp_len", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, {&hf_krb5rpc_sendto_kdc_resp_max, {"Response max", "krb5rpc.sendto_kdc_resp_max", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, {&hf_krb5rpc_sendto_kdc_resp_spare1, {"Response spare1", "krb5rpc.sendto_kdc_resp_spare1", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, {&hf_krb5rpc_sendto_kdc_resp_keysize, {"Response key size", "krb5rpc.sendto_kdc_resp_keysize", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, #if 0 {&hf_krb5rpc_sendto_kdc_resp_st, {"Response st", "krb5rpc.sendto_kdc_resp_st", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL}}, #endif {&hf_krb5rpc_krb5, {"krb5", "krb5rpc.krb5", FT_BYTES, BASE_NONE, NULL, 0x0, "krb5 blob", HFILL}}, }; static int *ett[] = { &ett_krb5rpc, &ett_krb5rpc_krb5, }; proto_krb5rpc = proto_register_protocol ("DCE/RPC Kerberos V", "KRB5RPC", "krb5rpc"); proto_register_field_array (proto_krb5rpc, hf, array_length (hf)); proto_register_subtree_array (ett, array_length (ett)); } void proto_reg_handoff_krb5rpc (void) { /* Register the protocol as dcerpc */ dcerpc_init_uuid (proto_krb5rpc, ett_krb5rpc, &uuid_krb5rpc, ver_krb5rpc, krb5rpc_dissectors, hf_krb5rpc_opnum); } /* * Editor modelines - https://www.wireshark.org/tools/modelines.html * * Local Variables: * c-basic-offset: 2 * tab-width: 8 * indent-tabs-mode: nil * End: * * ex: set shiftwidth=2 tabstop=8 expandtab: * :indentSize=2:tabSize=8:noTabs=true: */