epan/dissectors/packet-dcerpc-rpriv.c

   1 /* packet-dcerpc-rpriv.c
   2  *
   3  * Routines for DCERPC Privilege Server operations
   4  * Copyright 2002, Jaime Fournier <Jaime.Fournier@hush.com>
   5  * This information is based off the released idl files from opengroup.
   6  * ftp://ftp.opengroup.org/pub/dce122/dce/src/security.tar.gz  security/idl/rpriv.idl
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * SPDX-License-Identifier: GPL-2.0-or-later
  13  */
  14
  15 #include "config.h"
  16
  17
  18 #include <epan/packet.h>
  19 #include "packet-dcerpc.h"
  20
  21 void proto_register_rpriv (void);
  22 void proto_reg_handoff_rpriv (void);
  23
  24 static int proto_rpriv;
  25 static int hf_rpriv_opnum;
  26 static int hf_rpriv_get_eptgt_rqst_authn_svc;
  27 static int hf_rpriv_get_eptgt_rqst_authz_svc;
  28 static int hf_rpriv_get_eptgt_rqst_var1;
  29 /* static int hf_rpriv_get_eptgt_rqst_key_size; */
  30 static int hf_rpriv_get_eptgt_rqst_key_size2;
  31 static int hf_rpriv_get_eptgt_rqst_key_t;
  32 static int hf_rpriv_get_eptgt_rqst_key_t2;
  33
  34 static int ett_rpriv;
  35
  36
  37 static e_guid_t uuid_rpriv = { 0xb1e338f8, 0x9533, 0x11c9, { 0xa3, 0x4a, 0x08, 0x00, 0x1e, 0x01, 0x9c, 0x1e } };
  38 static uint16_t ver_rpriv = 1;
  39
  40
  41 static int
  42 rpriv_dissect_get_eptgt_rqst (tvbuff_t *tvb, int offset,
  43                               packet_info *pinfo, proto_tree *tree,
  44                               dcerpc_info *di, uint8_t *drep)
  45 {
  46         /*        [in]        handle_t         handle,
  47          *        [in]        unsigned32       authn_svc,
  48          *        [in]        unsigned32       authz_svc,
  49          *        [in]        rpriv_pickle_t   *ptgt_req,
  50          *                    unsigned32          num_bytes;
  51          *                    [size_is(num_bytes)]
  52          *                    byte            bytes[];
  53          */
  54
  55         uint32_t authn_svc, authz_svc, key_size, key_size2, var1;
  56         const uint8_t *key_t1 = NULL;
  57         const uint8_t *key_t2 = NULL;
  58
  59         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_authn_svc, &authn_svc);
  60         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_authz_svc, &authz_svc);
  61         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_var1, &var1);
  62         offset += 276;
  63         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_key_size2, &key_size);
  64         /* advance to get size of cell, and princ */
  65
  66         proto_tree_add_item_ret_string(tree, hf_rpriv_get_eptgt_rqst_key_t, tvb, offset, key_size, ENC_ASCII|ENC_NA, pinfo->pool, &key_t1);
  67         offset += key_size;
  68
  69         offset += 8;
  70         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_key_size2, &key_size2);
  71         proto_tree_add_item_ret_string(tree, hf_rpriv_get_eptgt_rqst_key_t2, tvb, offset, key_size2, ENC_ASCII|ENC_NA, pinfo->pool, &key_t2);
  72         offset += key_size2;
  73
  74
  75         col_append_fstr(pinfo->cinfo, COL_INFO,
  76                                 " Request for: %s in %s ", key_t2, key_t1);
  77
  78         return offset;
  79
  80 }
  81
  82
  83 static const dcerpc_sub_dissector rpriv_dissectors[] = {
  84         { 0, "get_ptgt", NULL,NULL},
  85         { 1, "become_delegate", NULL, NULL},
  86         { 2, "become_impersonator", NULL, NULL},
  87         { 3, "get_eptgt", rpriv_dissect_get_eptgt_rqst , NULL},
  88         { 0, NULL, NULL, NULL }
  89 };
  90
  91 void
  92 proto_register_rpriv (void)
  93 {
  94         static hf_register_info hf[] = {
  95                 { &hf_rpriv_opnum,
  96                   { "Operation", "rpriv.opnum", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
  97                 { &hf_rpriv_get_eptgt_rqst_authn_svc,
  98                   { "Authn_Svc", "rpriv.get_eptgt_rqst_authn_svc", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
  99                 { &hf_rpriv_get_eptgt_rqst_authz_svc,
 100                   { "Authz_Svc", "rpriv.get_eptgt_rqst_authz_svc", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 101 #if 0
 102                 { &hf_rpriv_get_eptgt_rqst_key_size,
 103                   { "Key_Size", "rpriv.get_eptgt_rqst_key_size", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 104 #endif
 105                 { &hf_rpriv_get_eptgt_rqst_var1,
 106                   { "Var1", "rpriv.get_eptgt_rqst_var1", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 107                 { &hf_rpriv_get_eptgt_rqst_key_size2,
 108                   { "Key_Size", "rpriv.get_eptgt_rqst_key_size2", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 109                 { &hf_rpriv_get_eptgt_rqst_key_t,
 110                   { "Key_t", "rpriv.get_eptgt_rqst_key_t", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 111                 { &hf_rpriv_get_eptgt_rqst_key_t2,
 112                   { "Key_t2", "rpriv.get_eptgt_rqst_key_t2", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 113
 114         };
 115
 116         static int *ett[] = {
 117                 &ett_rpriv,
 118         };
 119         proto_rpriv = proto_register_protocol ("Privilege Server operations", "rpriv", "rpriv");
 120         proto_register_field_array (proto_rpriv, hf, array_length (hf));
 121         proto_register_subtree_array (ett, array_length (ett));
 122 }
 123
 124 void
 125 proto_reg_handoff_rpriv (void)
 126 {
 127         /* Register the protocol as dcerpc */
 128         dcerpc_init_uuid (proto_rpriv, ett_rpriv, &uuid_rpriv, ver_rpriv, rpriv_dissectors, hf_rpriv_opnum);
 129 }
 130
 131 /*
 132  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 133  *
 134  * Local variables:
 135  * c-basic-offset: 8
 136  * tab-width: 8
 137  * indent-tabs-mode: t
 138  * End:
 139  *
 140  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 141  * :indentSize=8:tabSize=8:noTabs=false:
 142  */