From 809560c469f4bba1e7706d2c5611d2777a95a97f Mon Sep 17 00:00:00 2001
From: David Kaufmann <astra@ionic.at>
Date: Sat, 2 Jan 2016 23:12:14 +0100
Subject: [PATCH] update decode_ipid.py
---
exercise2/task2/decode_ipid.py | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/exercise2/task2/decode_ipid.py b/exercise2/task2/decode_ipid.py
index 4a98650..a112da9 100755
--- a/exercise2/task2/decode_ipid.py
+++ b/exercise2/task2/decode_ipid.py
@@ -6,6 +6,7 @@ logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
from scapy.all import *
logging.getLogger("scapy.runtime").setLevel(logging.WARN)
from pprint import pprint
+import os
# disable payload parsing (saves two seconds runtime^^)
IP.payload_guess = []
@@ -21,11 +22,22 @@ for p in PcapReader('large_flow.pcap'):
bin = "{0:016b}".format(id)
upper = int(bin[0:8], 2)
lower = int(bin[8:16], 2)
- print ("Upper: %s, Lower: %s" % (bin[0:8], bin[8:16]))
+ print ("Upper: %s (%d), Lower: %s (%d)" % (bin[0:8], upper, bin[8:16], lower))
print ("Full: %s" % (bin))
bytes.append(upper)
bytes.append(lower)
+try:
+ os.unlink('stream_encrypted')
+except Exception as e:
+ # ignore if file is missing
+ pass
with open('stream_encrypted', 'a+') as encfile:
encfile.write(bytes)
+try:
+ os.unlink('stream_decrypted')
+except Exception as e:
+ # ignore if file is missing
+ pass
+os.system('openssl enc -d -rc4 -nosalt -k nSa123 -in stream_encrypted -out stream_decrypted')
--
2.43.0