Rune Scapy
root@bt:~# scapy
Welcome to Scapy (2.0.1)
>>>
To Exit From Scapy Use Ctrl + D
Send Simple ICMP Packet
>>> send(IP(src="192.168.1.33",dst="192.168.1.1")/ICMP()/"I-LOVE-YOU")
If You Capture Trafic You Can See It.
Make Some Variables:
>>> L2=Ether()
>>> L3=IP()
>>> L4=TCP()
Just Verify
>>> L2
<Ether |>
>>> L3
<IP |>
>>> L4
<TCP |>
To See Default Configuration Inside Scapy
>>> L2.show()
###[ Ethernet ]###
dst= ff:ff:ff:ff:ff:ff
src= 00:00:00:00:00:00
type= 0x0
>>> L3.show()
###[ IP ]###
version= 4
ihl= None
tos= 0x0
len= None
id= 1
flags=
frag= 0
ttl= 64
proto= ip
chksum= 0x0
src= 127.0.0.1
dst= 127.0.0.1
options= ''
>>> L4.show()
###[ TCP ]###
sport= ftp_data
dport= www
seq= 0
ack= 0
dataofs= None
reserved= 0
flags= S
window= 8192
chksum= 0x0
urgptr= 0
options= {}
We Can Manually Change Any Settings.
Change L2 Source MAC Address
>>> L2=Ether(src="11:11:11:AA:AA:AA")
>>> L2.show()
###[ Ethernet ]###
dst= ff:ff:ff:ff:ff:ff
src= 11:11:11:AA:AA:AA <---
type= 0x0
Change L3 Source And Destination Addresses
>>> L3=IP(ttl=99, dst="192.168.1.25", src="192.168.1.22")
>>> L3.show()
###[ IP ]###
version= 4
ihl= None
tos= 0x0
len= None
id= 1
flags=
frag= 0
ttl= 64
proto= ip
chksum= 0x0
src= 192.168.1.22 <---
dst= 192.168.1.25 <---
options= ''
Make Quick Change
>>> del(L3.dst) (Delete Destination Address)
>>> L3.dst="192.168.1.26" (Add New Destination Address)
Change L4 Options
>>> L4=TCP(sport=7777, dport=22, flags="A")
>>> L4.show()
###[ TCP ]###
sport= 7777 <---
dport= ssh <---
seq= 0
ack= 0
dataofs= None
reserved= 0
flags= A <---
window= 8192
chksum= 0x0
urgptr= 0
options= {}
When Type L2, L3 And L4 Its Shows You Changed Options
>>> L2
<Ether src=11:11:11:AA:AA:AA |>
>>> L3
<IP ttl=99 src=192.168.1.22 dst=192.168.1.25 |>
>>> L4
<TCP sport=7777 dport=ssh flags=A |>
Now We Can Send 1 Packet And Verify It
>>> send=sendp(L2/L3/L4)
.
Sent 1 packets.
Now Verify In WireShark
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