FreeCalypso > hg > freecalypso-tools
view target-utils/tf-breakin/mkembed.c @ 92:bfed7a5c21a6
target-utils/libc/bzero.S: changed signed conditions to unsigned
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 28 Oct 2016 23:45:49 +0000 |
parents | e7502631a0f9 |
children |
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#include <sys/types.h> #include <sys/file.h> #include <sys/stat.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #define PAYLOAD_SIZE 116 u_char payload_buf[PAYLOAD_SIZE]; read_binary(filename) char *filename; { int fd; struct stat st; fd = open(filename, O_RDONLY); if (fd < 0) { perror(filename); exit(1); } fstat(fd, &st); if (!S_ISREG(st.st_mode)) { fprintf(stderr, "error: %s is not a regular file\n", filename); exit(1); } if (st.st_size != PAYLOAD_SIZE) { fprintf(stderr, "error: %s size mismatch\n", filename); exit(1); } if (read(fd, payload_buf, PAYLOAD_SIZE) != PAYLOAD_SIZE) { perror("read error"); exit(1); } close(fd); } write_output(filename) char *filename; { FILE *of; int i, j, idx; of = fopen(filename, "w"); if (!of) { perror(filename); exit(1); } fprintf(of, "u_char shellcode[%d] = {\n", PAYLOAD_SIZE); idx = 0; for (i = 0; i < 15; i++) { for (j = 0; j < 8; j++) { if (j) putc(' ', of); else putc('\t', of); fprintf(of, "0x%02X,", payload_buf[idx++]); if (idx >= PAYLOAD_SIZE) break; } putc('\n', of); } fputs("};\n", of); fclose(of); } main(argc, argv) char **argv; { if (argc != 3) { fprintf(stderr, "usage: %s payload.bin output.c\n", argv[0]); exit(1); } read_binary(argv[1]); write_output(argv[2]); exit(0); }