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/********************************************************************************
* libemu
*
* - x86 shellcode emulation -
*
*
* Copyright (C) 2007 Paul Baecher & Markus Koetter
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*
* contact nepenthesdev@users.sourceforge.net
*
*******************************************************************************/
#include <stdint.h>
#include "../src/libdasm.c"
#include "../src/libdasm.h"
/* JMPCall
const char scode[] = "\xfc\xbb\xbf\x05\xeb\xd0\xeb\x0c\x5e\x56\x31\x1e\xad\x01\xc3"
"\x85\xc0\x75\xf7\xc3\xe8\xef\xff\xff\xff\x43\x6f\x00\x97\x53";
*/
const char scode[] = "\x33\xc9\x83\xe9\xb0\xe8\xff\xff\xff\xff\xc0\x5e\x81\x76\x0e\x47"
"\x13\x2b\xc0\x83\xee\xfc\xe2\xf4\xbb\x79\xc0\x8d\xaf\xea\xd4\x3f";
void indent(int lev)
{
int j;
for ( j=0; j<lev; j++ )
printf(" ");
}
void instrtree(uint8_t *data, uint8_t datasize, uint8_t offset, uint16_t level)
{
static char str[256];
int i;
for ( i=1;i<15;i++ )
{
if (i > offset)
break;
INSTRUCTION inst;
uint8_t isize = get_instruction(&inst, data+offset-i, MODE_32);
if ( /*isize <= 0 ||*/ isize != i )
continue;
indent(level);
printf("instrsize %i\n", i);
get_instruction_string(&inst, FORMAT_INTEL, 0, str, sizeof(str));
indent(level);
printf("%s\n", str);
if ( offset - isize >= 1 )
instrtree(data, datasize, offset-isize, level+1);
// else
// return;
}
}
int main(void)
{
// int i;
//
// instrtree((uint8_t *)scode, 16*7, 16*7 0);
unsigned int i;
for ( i=0;i<sizeof(scode);i++ )
{
static char str[256];
INSTRUCTION inst;
int32_t isize = get_instruction(&inst, (uint8_t *)scode+i, MODE_32);
if (isize <= 0)
continue;
get_instruction_string(&inst, FORMAT_INTEL, 0, str, sizeof(str));
printf(" { rank = same; \"%02X\"; \"%08X %s\" };\n",i,i,str);
}
for ( i=0;i<sizeof(scode);i++ )
{
uint32_t off1;
static char str1[256];
INSTRUCTION inst1;
uint32_t off2;
static char str2[256];
INSTRUCTION inst2;
off1 = i;
int32_t isize = get_instruction(&inst1, (uint8_t *)scode+i, MODE_32);
if (isize <= 0)
continue;
off2=i+isize;
isize = get_instruction(&inst2, (uint8_t *)scode+i+isize, MODE_32);
if (isize <= 0)
continue;
get_instruction_string(&inst1, FORMAT_INTEL, 0, str1, sizeof(str1));
get_instruction_string(&inst2, FORMAT_INTEL, 0, str2, sizeof(str2));
printf(" \"%08X %s\" -> \"%08X %s\";\n",off1,str1,off2,str2);
}
return 0;
}
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