1 /*
2 fragrouter.c
3
4 network IDS evasion toolkit.
5
6 Dug Song <dugsong@anzen.com>
7
8 Copyright (c) 1999 Anzen Computing. All rights reserved.
9
10 Redistribution and use in source and binary forms, with or without
11 modification, are permitted provided that the following conditions
12 are met:
13
14 1. Redistributions of source code must retain the above copyright
15 notice, this list of conditions and the following disclaimer.
16 2. Redistributions in binary form must reproduce the above copyright
17 notice, this list of conditions and the following disclaimer in the
18 documentation and/or other materials provided with the distribution.
19 3. All advertising materials mentioning features or use of this software
20 must display the following acknowledgement:
21 This product includes software developed by Anzen Computing.
22 4. Neither the name of Anzen Computing nor the names of its
23 contributors may be used to endorse or promote products derived
24 from this software without specific prior written permission.
25
26 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
27 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
28 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
29 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
30 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
32 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
34 IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
35 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
36 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37
38 $Id: fragrouter.c,v 1.23 1999/09/21 15:47:32 dugsong Exp $
39 */
40
41 #include "config.h"
42
43 #ifdef STDC_HEADERS
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #endif
48 #ifdef HAVE_UNISTD_H
49 #include <sys/types.h>
50 #include <unistd.h>
51 #endif
52 #include "ip_frag.h"
53 #include "sniff.h"
54 #include "send.h"
55 #include "attack.h"
56 #include "version.h"
57
58 void
usage(void)59 usage(void)
60 {
61 int i;
62 char *str;
63
64 fprintf(stderr, "Version " FRAGROUTER_VERSION "\n"
65 "Usage: fragrouter [-i interface] [-p] [-g hop] [-G hopcount] ATTACK\n\n"
66 " where ATTACK is one of the following:\n\n");
67
68 for (i = 1; i < 10; i++)
69 if ((str = attack_string(ATTACK_BASE, i)) != NULL)
70 fprintf(stderr, " -B%d: %s\n", i, str);
71
72 for (i = 1; i < 10; i++)
73 if ((str = attack_string(ATTACK_FRAG, i)) != NULL)
74 fprintf(stderr, " -F%d: %s\n", i, str);
75
76 for (i = 1; i < 10; i++)
77 if ((str = attack_string(ATTACK_TCP, i)) != NULL)
78 fprintf(stderr, " -T%d: %s\n", i, str);
79
80 for (i = 1; i < 10; i++)
81 if ((str = attack_string(ATTACK_TCBC, i)) != NULL)
82 fprintf(stderr, " -C%d: %s\n", i, str);
83
84 for (i = 1; i < 10; i++)
85 if ((str = attack_string(ATTACK_TCBT, i)) != NULL)
86 fprintf(stderr, " -R%d: %s\n", i, str);
87
88 for (i = 1; i < 10; i++)
89 if ((str = attack_string(ATTACK_INSERT, i)) != NULL)
90 fprintf(stderr, " -I%d: %s\n", i, str);
91
92 for (i = 1; i < 10; i++)
93 if ((str = attack_string(ATTACK_EVADE, i)) != NULL)
94 fprintf(stderr, " -E%d: %s\n", i, str);
95
96 for (i = 1; i < 10; i++)
97 if ((str = attack_string(ATTACK_MISC, i)) != NULL)
98 fprintf(stderr, " -M%d: %s\n", i, str);
99
100 fprintf(stderr, "\n");
101 exit(1);
102 }
103
104 int
main(int argc,char * argv[])105 main(int argc, char *argv[])
106 {
107 char c, ebuf[BUFSIZ], hops[BUFSIZ], *dev = NULL;
108 int num = 0, type = -1, hopptr = 4;
109 attack_handler attack;
110
111 hops[0] = '\0';
112
113 while ((c = getopt(argc, argv, "B:F:T:C:R:I:E:M:i:g:G:pVh")) != EOF) {
114 switch (c) {
115 case 'B':
116 type = ATTACK_BASE;
117 num = atoi(optarg);
118 break;
119 case 'F':
120 type = ATTACK_FRAG;
121 num = atoi(optarg);
122 break;
123 case 'T':
124 type = ATTACK_TCP;
125 num = atoi(optarg);
126 break;
127 case 'C':
128 type = ATTACK_TCBC;
129 num = atoi(optarg);
130 break;
131 case 'R':
132 type = ATTACK_TCBT;
133 num = atoi(optarg);
134 break;
135 case 'I':
136 type = ATTACK_INSERT;
137 num = atoi(optarg);
138 break;
139 case 'E':
140 type = ATTACK_EVADE;
141 num = atoi(optarg);
142 break;
143 case 'M':
144 type = ATTACK_MISC;
145 num = atoi(optarg);
146 break;
147 case 'p':
148 ip_frag_init(1);
149 break;
150 case 'g':
151 strcat(hops, optarg);
152 strcat(hops, " ");
153 break;
154 case 'G':
155 hopptr = atoi(optarg);
156 break;
157 case 'i':
158 dev = strdup(optarg);
159 break;
160 default:
161 usage();
162 }
163 }
164 argc -= optind;
165 argv += optind;
166
167 if (argc != 0 || type == -1) usage();
168
169 if (!sniff_init(dev, ebuf)) {
170 fprintf(stderr, "fragrouter: sniff_init failed: %s\n", ebuf);
171 exit(1);
172 }
173 if (!send_init(ebuf, hops, hopptr)) {
174 fprintf(stderr, "fragrouter: send_init failed: %s\n", ebuf);
175 exit(1);
176 }
177 if (!(attack = attack_init(type, num, ebuf))) {
178 fprintf(stderr, "fragrouter: attack_init failed: %s\n", ebuf);
179 exit(1);
180 }
181 fprintf(stderr, "fragrouter: %s\n", attack_string(type, num));
182
183 sniff_loop(attack);
184
185 exit(0);
186 }
187
188 /* 5000. */
189