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comparison mot931c/emu.c @ 157:9082f3991fe5

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mot931c break-in procedure cracked
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Wed, 14 May 2014 05:34:37 +0000
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156:275d0f71a014 157:9082f3991fe5
1 #include <sys/types.h>
2 #include <sys/file.h>
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <string.h>
6 #include <strings.h>
7
8 static int fd;
9
10 static u_char verquery[13] = {0x02, 0x14, 0x41, 0x20, 0x20, 0x00, 0x00,
11 0x04, 0x00, 0x00, 0x00, 0x45, 0x02};
12
13 static u_char verquery_resp[10] = {0x41, 0x00, 0x04, 0x00, 0x00, 0x00,
14 '8', '.', '8', '.'};
15
16 static u_char download_hdr[3] = {0x02, 0x14, 0x40};
17 static u_char download_resp[2] = {0x40, 0x00};
18
19 send_stx()
20 {
21 static u_char stx = 0x02;
22
23 write(fd, &stx, 1);
24 }
25
26 send_rvtmux_byte(b)
27 {
28 u_char buf[2];
29 int l, o;
30
31 buf[0] = 0x10;
32 buf[1] = b;
33 if (b == 0x02 || b == 0x10) {
34 o = 0;
35 l = 2;
36 } else {
37 o = 1;
38 l = 1;
39 }
40 write(fd, buf + o, l);
41 }
42
43 send_etm_resp(data, datalen)
44 u_char *data;
45 {
46 u_char csum;
47 int i;
48
49 printf("Responding with:");
50 send_stx();
51 send_rvtmux_byte(0x14);
52 csum = 0;
53 for (i = 0; i < datalen; i++) {
54 printf(" %02X", data[i]);
55 send_rvtmux_byte(data[i]);
56 csum ^= data[i];
57 }
58 send_rvtmux_byte(csum);
59 send_stx();
60 putchar('\n');
61 }
62
63 main(argc, argv)
64 char **argv;
65 {
66 u_char buf[1024];
67 int cc, i;
68
69 if (argc != 2) {
70 fprintf(stderr, "usage: %s pty\n", argv[0]);
71 exit(1);
72 }
73 fd = open(argv[1], O_RDWR);
74 if (fd < 0) {
75 perror(argv[1]);
76 exit(1);
77 }
78 for (;;) {
79 cc = read(fd, buf, sizeof buf);
80 if (cc < 0) {
81 perror("read error");
82 exit(1);
83 }
84 if (cc == 0) {
85 fprintf(stderr, "read EOF\n");
86 exit(1);
87 }
88 printf("read %d bytes:", cc);
89 for (i = 0; i < cc; i++)
90 printf(" %02X", buf[i]);
91 putchar('\n');
92 if (cc == sizeof(verquery) && !bcmp(buf, verquery, cc))
93 send_etm_resp(verquery_resp, sizeof verquery_resp);
94 if (cc > 3 && !bcmp(buf, download_hdr, 3))
95 send_etm_resp(download_resp, sizeof download_resp);
96 }
97 }