Showing posts with label network protocols. Show all posts
Showing posts with label network protocols. Show all posts

Tuesday, October 27, 2009

pcap2rawc.py

This is another script that maybe help someone coding things with raw c Packets. It take a pcap file and create a file with all that packets declared as c arrays.



#!/usr/bin/python
# File: pcap2rawc.py
# Pablo Rincon Crespo [pablo.rincon.crespo at gmail]
#
try:
from scapy.all import *
except:
print "old way..."
from scapy import *

import sys
from binascii import *

if len(sys.argv) ==2:
print "//Parsing "+str(sys.argv[1])
else:
print "Usage: python "+sys.argv[0]+" file.pcap"
exit(10)

pcap=rdpcap(sys.argv[1])
out=file(sys.argv[1]+".rawc","w")

out.write("// Generated from pcap2rawc.py\n")

i=0
for p in pcap:
i=i+1
print "//processing packet "+str(i)+": ***"
print p.command()
bytes=len(p)
strbyte=""
for j in range(0,bytes):
if j %8 ==0:
strbyte = strbyte +"\n "
strbyte = strbyte + "0x" + str(hexlify(str(p)[j]))
if j < bytes-1:
if j+1 %8:
strbyte= strbyte + ","
else:
strbyte= strbyte + ", "
rawpkt=" uint8_t rawpkt" + str(i) + "[] = {" +strbyte + " }; /* end rawpkt" + str(i) +" */\n"
print rawpkt

out.write(rawpkt + "\n")

out.close()
print "//"+ str(i) +" packets written in "+sys.argv[1]+".rawc"