FreeCalypso > hg > freecalypso-reveng
view miscprog/factdiff.c @ 266:bb46e9f67cd5
dsample-fw-disasm: found apparent beginning of the tpudrv10 module
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 18 Jan 2018 17:12:17 +0000 |
parents | 597143ba1c37 |
children |
line wrap: on
line source
/* * The 64 KiB "factory block" at the end of the 2nd flash chip select on * Pirelli DP-L10 phones is believed to contain juicy info (IMEI and RF * calibration data), but the format is yet to be cracked. * * This program compares Pirelli factory block images that have been read * out of several phones, seeking to determine which bytes are always the * same and which bytes change from specimen to specimen. * * Written by Spacefalcon the Outlaw. */ #include <sys/types.h> #include <sys/file.h> #include <stdio.h> #include <stdlib.h> u_char specimen0[65536]; char is_diff[65536]; read_specimen_file(filename, buf) char *filename; u_char *buf; { int fd, cc; fd = open(filename, O_RDONLY); if (fd < 0) { perror(filename); exit(1); } cc = read(fd, buf, 65536); close(fd); if (cc != 65536) { fprintf(stderr, "%s: unable to read 64 KiB\n", filename); exit(1); } } process_comp_specimen(filename) char *filename; { u_char this_spec[65536]; int i; read_specimen_file(filename, this_spec); for (i = 0; i < 65536; i++) if (this_spec[i] != specimen0[i]) is_diff[i] = 1; } output() { int off, state, cstart, num; for (off = 0; off < 65536; ) { state = is_diff[off]; cstart = off; while (off < 65536 && is_diff[off] == state) off++; printf("%04X-%04X: %s", cstart, off-1, state ? "varying" : "constant"); if (state) { num = off - cstart; printf(" (%d byte%s)", num, num != 1 ? "s" : ""); } putchar('\n'); } } main(argc, argv) char **argv; { char **ap; if (argc < 3) { fprintf(stderr, "usage: %s specimen0 specimen1 ...\n", argv[0]); exit(1); } read_specimen_file(argv[1], specimen0); for (ap = argv + 2; *ap; ap++) process_comp_specimen(*ap); output(); exit(0); }