Pentesting firewall with Hping3

Ethical Hacking Institute Course in Pune-India
Extreme Hacking | Sadik Shaikh | Cyber Suraksha Abhiyan

1. Testing ICMP: In this example hping3 will behave like a normal ping utility, sending ICMP-echo und receiving ICMP-reply

2. Traceroute using ICMP: This example is similar to famous utilities like tracert (windows) or traceroute (linux) who uses ICMP packets increasing every time in 1 its TTL value.

3. Checking port: Here hping3 will send a Syn packet to a specified port (80 in our example). We can control also from which local port will start the scan (5050).

4. Traceroute to a determined port: A nice feature from Hping3 is that you can do a traceroute to a specified port watching where your packet is blocked. It can just be done by adding –traceroute to the last command.

5. Other types of ICMP: This example sends a ICMP address mask request ( Type 17 ).

6. Other types of Port Scanning: First type we will try is the FIN scan. In a TCP connection the FIN flag is used to start the connection closing routine. If we do not receive a reply, that means the port is open. Normally firewalls send a RST+ACK packet back to signal that the port is closed..

7. Ack Scan: This scan can be used to see if a host is alive (when Ping is blocked for example). This should send a RST response back if the port is open.

8. Xmas Scan: This scan sets the sequence number to zero and set the URG + PSH + FIN flags in the packet. If the target device’s TCP port is closed, the target device sends a TCP RST packet in reply. If the target device’s TCP port is open, the target discards the TCP Xmas scan, sending no reply.

9. Null Scan: This scan sets the sequence number to zero and have no flags set in the packet. If the target device’s TCP port is closed, the target device sends a TCP RST packet in reply. If the target device’s TCP port is open, the target discards the TCP NULL scan, sending no reply.

10. Smurf Attack: This is a type of denial-of-service attack that floods a target system via spoofed broadcast ping messages.

11. DOS Land Attack:

Anex A Hping3 Help

usage: hping3 host [options]
-h –help show this help
-v –version show version
-c –count packet count
-i –interval wait (uX for X microseconds, for example -i u1000)
–fast alias for -i u10000 (10 packets for second)
–faster alias for -i u1000 (100 packets for second)
–flood sent packets as fast as possible. Don’t show replies.
-n –numeric numeric output
-q –quiet quiet
-I –interface interface name (otherwise default routing interface)
-V –verbose verbose mode
-D –debug debugging info
-z –bind bind ctrl+z to ttl (default to dst port)
-Z –unbind unbind ctrl+z
–beep beep for every matching packet received

Mode
default mode TCP
-0 –rawip RAW IP mode
-1 –icmp ICMP mode
-2 –udp UDP mode
-8 –scan SCAN mode.
Example: hping –scan 1-30,70-90 -S www.target.host
-9 –listen listen mode

IP
-a –spoof spoof source address
–rand-dest random destionation address mode. see the man.
–rand-source random source address mode. see the man.
-t –ttl ttl (default 64)
-N –id id (default random)
-W –winid use win* id byte ordering
-r –rel relativize id field (to estimate host traffic)
-f –frag split packets in more frag. (may pass weak acl)
-x –morefrag set more fragments flag
-y –dontfrag set dont fragment flag
-g –fragoff set the fragment offset
-m –mtu set virtual mtu, implies –frag if packet size > mtu
-o –tos type of service (default 0x00), try –tos help
-G –rroute includes RECORD_ROUTE option and display the route buffer
–lsrr loose source routing and record route
–ssrr strict source routing and record route
-H –ipproto set the IP protocol field, only in RAW IP mode
ICMP
-C –icmptype icmp type (default echo request)
-K –icmpcode icmp code (default 0)
–force-icmp send all icmp types (default send only supported types)
–icmp-gw set gateway address for ICMP redirect (default 0.0.0.0)
–icmp-ts Alias for –icmp –icmptype 13 (ICMP timestamp)
–icmp-addr Alias for –icmp –icmptype 17 (ICMP address subnet mask)
–icmp-help display help for others icmp options
UDP/TCP
-s –baseport base source port (default random)
-p –destport [+][+]<port> destination port(default 0) ctrl+z inc/dec
-k –keep keep still source port
-w –win winsize (default 64)
-O –tcpoff set fake tcp data offset (instead of tcphdrlen / 4)
-Q –seqnum shows only tcp sequence number
-b –badcksum (try to) send packets with a bad IP checksum many systems will fix the IP checksum sending the packet so you’ll get bad UDP/TCP checksum instead.
-M –setseq set TCP sequence number
-L –setack set TCP ack
-F –fin set FIN flag
-S –syn set SYN flag
-R –rst set RST flag
-P –push set PUSH flag
-A –ack set ACK flag
-U –urg set URG flag
-X –xmas set X unused flag (0x40)
-Y –ymas set Y unused flag (0x80)
–tcpexitcode use last tcp->th_flags as exit code
–tcp-timestamp enable the TCP timestamp option to guess the HZ/uptime
Common
-d –data data size (default is 0)
-E –file data from file
-e –sign add ‘signature’
-j –dump dump packets in hex
-J –print dump printable characters
-B –safe enable ‘safe’ protocol
-u –end tell you when –file reached EOF and prevent rewind
-T –traceroute traceroute mode (implies –bind and –ttl 1)
–tr-stop Exit when receive the first not ICMP in traceroute mode
–tr-keep-ttl Keep the source TTL fixed, useful to monitor just one hop
–tr-no-rtt Don’t calculate/show RTT information in traceroute mode

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