/**
* The real main function
* @ingroup evarista
*/
int eva_main(int ac, char **av)
{
/* Interface tweak */
eva_setup_quit_msg();
eva_setup_prompt();
revm_setup(ac, av, 0, 0);
if (world.state.revm_mode != REVM_STATE_CMDLINE)
eva_banner_print(av[1]);
revm_config(EVARISTA_CONFIG);
setup_local_cmdhash();
revm_output(" [*] Type help for regular commands \n\n");
revm_run(ac, av);
return (0);
}
/**
* Load linkmap
* @param name
* @return
*/
int e2dbg_linkmap_load(char *name)
{
static int done = 0;
elfshsect_t *got;
eresi_Addr *linkmap_entry;
void *data;
#if defined(sun)
Link_map *actual;
#else
elfshlinkmap_t *actual;
#endif
char *gotname;
char *ename;
elfsh_Ehdr *hdr;
u_int elftypenum;
elfsh_Sym *endsym;
char buff[64];
PROFILER_IN(__FILE__, __FUNCTION__, __LINE__);
if (done)
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg] Starting Loading LINKMAP !! \n");
#endif
e2dbg_user_hooks_install();
revm_config(E2DBG_CONFIG);
/* Load debugged file */
if (name)
{
/* No need to fill ET_EXEC base addr */
if (!revm_is_loaded(name) && revm_file_load(name, 0, NULL) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Cannot load file", -1);
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] file %s loaded\n", name);
#endif
world.curjob->curfile->linkmap = E2DBG_DYNAMIC_LINKMAP;
world.curjob->curfile->iotype = ELFSH_IOTYPE_EMBEDDED;
world.curjob->curfile->running = 0;
}
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] Before switch\n");
#endif
/* Switch to obj 1 */
if (revm_doswitch(1) < 0)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Cannot switch on object 1", -1);
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] After switch \n");
#endif
/* Base address for PIE binaries have to be imported */
if (world.curjob->curfile->hdr->e_type == ET_DYN &&
!world.curjob->curfile->rhdr.base)
{
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] Inside ET_DYN condition\n");
#endif
endsym = elfsh_get_symbol_by_name(world.curjob->curfile, "_end");
fprintf(stderr, "endsym = " AFMT " \n", (eresi_Addr) endsym);
sleep(1);
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] Filling PIE base"
" (_end ondisk = " AFMT " / _end in memory = " AFMT ") ! \n",
endsym->st_value, e2dbgworld.syms.piebase);
#endif
world.curjob->curfile->rhdr.base = e2dbgworld.syms.piebase -
endsym->st_value;
}
/* Get ALTGOT or GOT if we used LD_PRELOAD */
if (!e2dbgworld.preloaded)
{
gotname = ELFSH_SECTION_NAME_ALTGOT;
got = elfsh_get_section_by_name(world.curjob->curfile,
gotname, NULL, NULL, NULL);
}
else
got = elfsh_get_gotsct(world.curjob->curfile);
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] %s section at " XFMT "\n",
got->name, got->shdr->sh_addr);
fprintf(stderr, "[e2dbg_linkmap_load] BASE = %08x\n",
world.curjob->curfile->rhdr.base);
#endif
/* Fix first file linkmap entry */
if (world.curjob->curfile->linkmap == E2DBG_DYNAMIC_LINKMAP)
{
/* Fix first file linkmap entry */
hdr = elfsh_get_hdr(world.curjob->curfile);
if (!hdr)
PROFILER_ERR(__FILE__, __FUNCTION__, __LINE__,
"Cannot get ELF header", -1);
elftypenum = elfsh_get_objtype(hdr);
//fprintf(stderr, "[e2dbg_linkmap_load] after ELF header \n");
/* Get ALTGOT entry */
data = elfsh_readmem(got);
//fprintf(stderr, "[e2dbg_linkmap_load] after get_raw (data = %08X) \n", data);
linkmap_entry = elfsh_get_got_entry_by_index(data, 1);
//fprintf(stderr, "[e2dbg_linkmap_load] after entry_by_index (linkmap_entry = %08x)\n",
// linkmap_entry);
#if defined(__FreeBSD__) || defined(__NetBSD__)
world.curjob->curfile->linkmap = (elfshlinkmap_t *)
&((Obj_Entry *) elfsh_get_got_val(linkmap_entry))->linkmap;
#elif defined(sun)
world.curjob->curfile->linkmap = e2dbgworld.syms.map;
#else
world.curjob->curfile->linkmap = (elfshlinkmap_t *) elfsh_get_got_val(linkmap_entry);
#endif
}
#if __DEBUG_LINKMAP__
else
fprintf(stderr, "[e2dbg_linkmap_load] Linkmap was -NOT- dynamic\n");
fprintf(stderr, "[e2dbg_linkmap_load] LINKMAP Found at " XFMT "\n",
world.curjob->curfile->linkmap);
#endif
revm_doswitch(1);
/* now load all linkmap's files */
for (actual = elfsh_linkmap_get_lprev(world.curjob->curfile->linkmap);
actual != NULL;
actual = elfsh_linkmap_get_lprev(actual))
{
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] Running on LINKMAP PREV " XFMT "\n",
actual);
#endif
ename = elfsh_linkmap_get_lname(actual);
if (ename && *ename && !revm_is_loaded(ename))
{
if (revm_file_load(ename,
elfsh_linkmap_get_laddr(actual),
world.curjob->curfile->linkmap) < 0)
e2dbg_output(" [EE] Loading failed");
world.curjob->curfile->iotype = ELFSH_IOTYPE_EMBEDDED;
}
}
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] Running on LINKMAP NEXT\n");
#endif
for (actual = elfsh_linkmap_get_lnext(world.curjob->curfile->linkmap);
actual != NULL;
actual = elfsh_linkmap_get_lnext(actual))
{
ename = elfsh_linkmap_get_lname(actual);
#if __DEBUG_LINKMAP__
fprintf(stderr, "[e2dbg_linkmap_load] Running on LINKMAP NEXT " XFMT " (%s baseaddr %08X) \n",
actual, ename, actual->laddr);
#endif
if (ename && *ename && !revm_is_loaded(ename))
{
if (revm_file_load(ename, elfsh_linkmap_get_laddr(actual),
world.curjob->curfile->linkmap) < 0)
e2dbg_output(" [EE] Loading failed");
world.curjob->curfile->iotype = ELFSH_IOTYPE_EMBEDDED;
}
}
/* Everything was OK */
e2dbg_output("\n");
//elfsh_set_runtime_mode();
revm_doswitch(1);
snprintf(buff, sizeof(buff), " [*] Target PID = %u \n", getpid());
e2dbg_output(buff);
done = 1;
PROFILER_ROUT(__FILE__, __FUNCTION__, __LINE__, 0);
}
