It is a powerful and an unique packet injection tool, that is capable of the below:

1 – Send sequentially (i.e., ALMOST on the same time) the following protocols:

• ICMP: Internet Control Message Protocol
• IGMP: Internet Group Management Protocol
• TCP: Transmission Control Protocol
• UDP: User Datagram Protocol

2 – Send an (quite) incredible amount of packets per second, making it a “second to none” tool:

• More than 1,000,000 pps of SYN Flood (+50% of the network’s uplink) in a 1000BASE-T Network (Gigabit Ethernet).
• More than 120,000 pps of SYN Flood (+60% of the network’s uplink) in a 100BASE-TX Network (Fast Ethernet).

3 – Perform “Stress Testing” on a variety of network infrastructure, network devices and security solutions in place.

4 – Simulate Denial-of-Service attacks, validating the Firewall rules and Intrusion Detection System/Intrusion Prevention System policies.

You can download T50 here:

t50-2.45r-H2HC.tgz

Or read more here.

There is another option for DNS Brute Forcing which uses threads, so may be faster than TXDNS 2.0 which we posted about recently.

What does it do?

This program was written to extract valid hosts of a domain that deny zone transfers.

The program supports:

• IPv4 => IP Address of 32 bits.
• IPv6 => IP Address of 128 bits.
• Multi Thread => Make several resolutions at “the same time”.
• EMA => Extract more than 1 IP in servers with HA, Network Load Balance, etc, (like: www.yahoo.com, www.microsoft.com).

Where do I use it?

This program must be used against DNS Servers that deny zone transfers.

Example of DNS Servers that deny transfer zones:

root@Debian:/tmp/WS-DNS# host -l frontthescene.com.br
;; connection timed out; no servers could be reached

root@Debian:/tmp/WS-DNS# dig @200.242.154.2 frontthescene.com.br axfr

; <<>> DiG 9.2.1 <<>> @200.242.154.2 frontthescene.com.br axfr
;; global options:  printcmd
; Transfer failed.

How do I compile it?

To compile it, do:

gcc -o WS-DNS-BFX WS-DNS-BFX.c -lpthread -D_REENTRANT -D_THREAD_SAFE

To best performance do:

gcc -o WS-DNS-BFX WS-DNS-BFX.c -lpthread -D_REENTRANT -D_THREAD_SAFE -O3

If u don’t have a compiler (gcc), libs, etc, i added at the .tgz file this program compiled static, called “WS-DNS-BFX-Static”.

How do I use it?

Is easy use this program. Supose that you want extract valid hosts from “yahoo.com”, using dict-file.txt (Brute Force File) and open 4 threads, to do it the command is:

root@Debian:/tmp/WS-DNS# ./WS-DNS-BFX yahoo.com dict-file.txt 4
     Progress ..............................

When it finish, will be generated a file called “hosts-yahoo.com.txt” with the extracted hosts.

You can download it here:

DNS Brute Force eXtract