FreeCalypso > hg > freecalypso-sw

annotate target-utils/tf-breakin/mkembed.c @ 996:09b8b2327838

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tiffs in vitro reader: implemented support for old 16-bit location field (-O)
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Sun, 03 Jan 2016 04:23:29 +0000
parents 7166c8311b0d
children
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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 116
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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 shellcode[%d] = {\n", PAYLOAD_SIZE);
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50 idx = 0;
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51 for (i = 0; i < 15; 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 if (idx >= PAYLOAD_SIZE)
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59 break;
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60 }
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61 putc('\n', of);
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62 }
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63 fputs("};\n", of);
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64 fclose(of);
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65 }
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66
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67 main(argc, argv)
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68 char **argv;
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69 {
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70 if (argc != 3) {
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71 fprintf(stderr, "usage: %s payload.bin output.c\n", argv[0]);
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72 exit(1);
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73 }
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74 read_binary(argv[1]);
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75 write_output(argv[2]);
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76 exit(0);
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77 }