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annotate target-utils/tf-breakin/mkembed.c @ 357:22c6e39e1789

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target-utils/tf-breakin: build embeddable form of the payload
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Thu, 15 May 2014 09:49:30 +0000
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children 7166c8311b0d
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357
22c6e39e1789 target-utils/tf-breakin: build embeddable form of the payload
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1 #include <sys/types.h>
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2 #include <sys/file.h>
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3 #include <sys/stat.h>
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <unistd.h>
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7
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8 #define PAYLOAD_SIZE 112
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9 u_char payload_buf[PAYLOAD_SIZE];
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10
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11 read_binary(filename)
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12 char *filename;
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13 {
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14 int fd;
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15 struct stat st;
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16
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17 fd = open(filename, O_RDONLY);
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18 if (fd < 0) {
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19 perror(filename);
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20 exit(1);
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21 }
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22 fstat(fd, &st);
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23 if (!S_ISREG(st.st_mode)) {
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24 fprintf(stderr, "error: %s is not a regular file\n", filename);
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25 exit(1);
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26 }
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27 if (st.st_size != PAYLOAD_SIZE) {
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28 fprintf(stderr, "error: %s size mismatch\n", filename);
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29 exit(1);
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30 }
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31 if (read(fd, payload_buf, PAYLOAD_SIZE) != PAYLOAD_SIZE) {
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32 perror("read error");
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33 exit(1);
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34 }
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35 close(fd);
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36 }
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37
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38 write_output(filename)
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39 char *filename;
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40 {
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41 FILE *of;
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42 int i, j, idx;
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43
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44 of = fopen(filename, "w");
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45 if (!of) {
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46 perror(filename);
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47 exit(1);
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48 }
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49 fprintf(of, "u_char payload[%d] = {\n", PAYLOAD_SIZE);
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50 idx = 0;
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51 for (i = 0; i < 14; i++) {
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52 for (j = 0; j < 8; j++) {
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53 if (j)
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54 putc(' ', of);
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55 else
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56 putc('\t', of);
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57 fprintf(of, "0x%02X,", payload_buf[idx++]);
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58 }
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59 putc('\n', of);
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60 }
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61 fputs("};\n", of);
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62 fclose(of);
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63 }
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64
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65 main(argc, argv)
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66 char **argv;
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67 {
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68 if (argc != 3) {
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69 fprintf(stderr, "usage: %s payload.bin output.c\n", argv[0]);
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70 exit(1);
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71 }
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72 read_binary(argv[1]);
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73 write_output(argv[2]);
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74 exit(0);
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75 }