1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/* Copyright (C) 2017 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author Mats Klepsland <mats.klepsland@gmail.com>
*
*/
#include "suricata-common.h"
#include "detect.h"
#include "pkt-var.h"
#include "conf.h"
#include "threads.h"
#include "threadvars.h"
#include "tm-threads.h"
#include "util-print.h"
#include "util-unittest.h"
#include "util-debug.h"
#include "output.h"
#include "app-layer.h"
#include "app-layer-parser.h"
#include "app-layer-ssl.h"
#include "util-privs.h"
#include "util-buffer.h"
#include "util-proto-name.h"
#include "util-logopenfile.h"
#include "util-time.h"
#ifdef HAVE_LUA
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include "util-lua.h"
#include "util-lua-common.h"
#include "util-lua-ja3.h"
static int Ja3GetHash(lua_State *luastate)
{
if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
return LuaCallbackError(luastate, "error: protocol is not tls");
Flow *f = LuaStateGetFlow(luastate);
if (f == NULL)
return LuaCallbackError(luastate, "internal error: no flow");
void *state = FlowGetAppState(f);
if (state == NULL)
return LuaCallbackError(luastate, "error: no app layer state");
SSLState *ssl_state = (SSLState *)state;
if (ssl_state->client_connp.ja3_hash == NULL)
return LuaCallbackError(luastate, "error: no JA3 hash");
return LuaPushStringBuffer(luastate,
(uint8_t *)ssl_state->client_connp.ja3_hash,
strlen(ssl_state->client_connp.ja3_hash));
}
static int Ja3GetString(lua_State *luastate)
{
if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
return LuaCallbackError(luastate, "error: protocol is not tls");
Flow *f = LuaStateGetFlow(luastate);
if (f == NULL)
return LuaCallbackError(luastate, "internal error: no flow");
void *state = FlowGetAppState(f);
if (state == NULL)
return LuaCallbackError(luastate, "error: no app layer state");
SSLState *ssl_state = (SSLState *)state;
if (ssl_state->client_connp.ja3_str == NULL ||
ssl_state->client_connp.ja3_str->data == NULL)
return LuaCallbackError(luastate, "error: no JA3 str");
return LuaPushStringBuffer(luastate,
(uint8_t *)ssl_state->client_connp.ja3_str->data,
ssl_state->client_connp.ja3_str->used);
}
static int Ja3SGetHash(lua_State *luastate)
{
if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
return LuaCallbackError(luastate, "error: protocol is not tls");
Flow *f = LuaStateGetFlow(luastate);
if (f == NULL)
return LuaCallbackError(luastate, "internal error: no flow");
void *state = FlowGetAppState(f);
if (state == NULL)
return LuaCallbackError(luastate, "error: no app layer state");
SSLState *ssl_state = (SSLState *)state;
if (ssl_state->server_connp.ja3_hash == NULL)
return LuaCallbackError(luastate, "error: no JA3S hash");
return LuaPushStringBuffer(luastate,
(uint8_t *)ssl_state->server_connp.ja3_hash,
strlen(ssl_state->server_connp.ja3_hash));
}
static int Ja3SGetString(lua_State *luastate)
{
if (!(LuaStateNeedProto(luastate, ALPROTO_TLS)))
return LuaCallbackError(luastate, "error: protocol is not tls");
Flow *f = LuaStateGetFlow(luastate);
if (f == NULL)
return LuaCallbackError(luastate, "internal error: no flow");
void *state = FlowGetAppState(f);
if (state == NULL)
return LuaCallbackError(luastate, "error: no app layer state");
SSLState *ssl_state = (SSLState *)state;
if (ssl_state->server_connp.ja3_str == NULL ||
ssl_state->server_connp.ja3_str->data == NULL)
return LuaCallbackError(luastate, "error: no JA3S str");
return LuaPushStringBuffer(luastate,
(uint8_t *)ssl_state->server_connp.ja3_str->data,
ssl_state->server_connp.ja3_str->used);
}
/** *\brief Register JA3 Lua extensions */
int LuaRegisterJa3Functions(lua_State *luastate)
{
lua_pushcfunction(luastate, Ja3GetHash);
lua_setglobal(luastate, "Ja3GetHash");
lua_pushcfunction(luastate, Ja3GetString);
lua_setglobal(luastate, "Ja3GetString");
lua_pushcfunction(luastate, Ja3SGetHash);
lua_setglobal(luastate, "Ja3SGetHash");
lua_pushcfunction(luastate, Ja3SGetString);
lua_setglobal(luastate, "Ja3SGetString");
return 0;
}
#endif /* HAVE_LUA */
|
