python构造IP报文实例
我就废话不多说了，大家还是直接看代码吧！
importsocket
importsys
importtime
importstruct
HOST,PORT="10.60.66.66",10086
defmake_forward_iphdr(source_ip='1.0.0.1',dest_ip='2.0.0.2',proto=socket.IPPROTO_UDP):
#ipheaderfields
ip_ihl=5
ip_ver=4
ip_tos=0
ip_tot_len=0#kernelwillfillthecorrecttotallength
ip_id=54321#Idofthispacket
ip_frag_off=0
ip_ttl=255
ip_proto=proto
ip_check=0#kernelwillfillthecorrectchecksum
ip_saddr=socket.inet_aton(source_ip)#Spoofthesourceipaddressifyouwantto
ip_daddr=socket.inet_aton(dest_ip)
ip_ihl_ver=(ip_ver<<4)+ip_ihl
#the!inthepackformatstringmeansnetworkorder
ip_header=struct.pack('!BBHHHBBH4s4s',ip_ihl_ver,ip_tos,ip_tot_len,ip_id,ip_frag_off,ip_ttl,ip_proto,ip_check,ip_saddr,ip_daddr)
returnip_header
defmake_forward_udphdr(src_port=1024,dst_port=10086):
udp_header=struct.pack('!HHHH',src_port,dst_port,0,0)
returnudp_header
#checksumfunctionsneededforcalculationchecksum
defchecksum(msg):
s=0
#looptaking2charactersatatime
foriinrange(0,len(msg),2):
w=ord(msg[i])+(ord(msg[i+1])<<8)
s=s+w
s=(s>>16)+(s&0xffff);
s=s+(s>>16);
#complementandmaskto4byteshort
s=~s&0xffff
returns
defmake_tcp_data(ip_header,src_port=1024,dst_port=10086,source_ip='1.0.0.1',dest_ip='2.0.0.2',user_data='test'):
tcp_source=src_port#sourceport
tcp_dest=dst_port#destinationport
tcp_seq=454
tcp_ack_seq=0
tcp_doff=5#4bitfield,sizeoftcpheader,5*4=20bytes
#tcpflags
tcp_fin=0
tcp_syn=1
tcp_rst=0
tcp_psh=0
tcp_ack=0
tcp_urg=0
tcp_window=socket.htons(5840)#maximumallowedwindowsize
tcp_check=0
tcp_urg_ptr=0
tcp_offset_res=(tcp_doff<<4)+0
tcp_flags=tcp_fin+(tcp_syn<<1)+(tcp_rst<<2)+(tcp_psh<<3)+(tcp_ack<<4)+(tcp_urg<<5)
#the!inthepackformatstringmeansnetworkorder
tcp_header=struct.pack('!HHLLBBHHH',tcp_source,tcp_dest,tcp_seq,tcp_ack_seq,tcp_offset_res,tcp_flags,tcp_window,tcp_check,tcp_urg_ptr)
source_address=socket.inet_aton(source_ip)
dest_address=socket.inet_aton(dest_ip)
placeholder=0
protocol=socket.IPPROTO_TCP
tcp_length=len(tcp_header)+len(user_data)
psh=struct.pack('!4s4sBBH',source_address,dest_address,placeholder,protocol,tcp_length);
psh=psh+tcp_header+user_data;
tcp_check=checksum(psh)
#printtcp_checksum
#makethetcpheaderagainandfillthecorrectchecksum-rememberchecksumisNOTinnetworkbyteorder
tcp_header=struct.pack('!HHLLBBH',tcp_source,tcp_dest,tcp_seq,tcp_ack_seq,tcp_offset_res,tcp_flags,tcp_window)+struct.pack('H',tcp_check)+struct.pack('!H',tcp_urg_ptr)
#finalfullpacket-synpacketsdonthaveanydata
packet=ip_header+tcp_header+user_data
returnpacket
补充知识：python做在域名作为关键字的POST报文集合分类
将报文按域名分成不同的集合，而后写入excel，主要使用了字典数据结构
输入内容：
[域名，post报文（一个域名有多条，在不同行），域名类型]
输出内容：
[域名，POST报文集合，域名类型]
#-*-encoding:UTF-8-*-
importopenpyxl
fromopenpyxlimportload_workbook
fromopenpyxlimportWorkbook
importnumpyasnp
importpandasaspd
importre
strinfo=re.compile('[]+')
book=load_workbook('ex2.xlsx','utf-8')
sheet=book.worksheets[0]
rows=sheet.max_row
cols=sheet.max_column
Post={}
Type={}
foriinrange(2,rows+1):#向字典里添加元素
dn=sheet.cell(i,1).value
pv=sheet.cell(i,2).value
tv=sheet.cell(i,3).value
ifPost.get(dn)==None:#第一次遇到這个域名
Post[dn]=pv
Type[dn]=tv
else:
Post[dn]+='\n'+pv
wb=Workbook()
sh=wb.worksheets[0]#输出表格
foriinrange(2,rows+1):#从字典中取出内容存入excel
dn=sheet.cell(i,1).value
ifi==2:
Post[dn]=Post[dn].replace('/','').replace(':','')
Post[dn]=Post[dn].replace('(','').replace(')','')
Post[dn]=Post[dn].replace('*','').replace(';','')
Post[dn]=Post[dn].replace('\t','').replace('\n','')
Post[dn]=Post[dn].replace('$','').replace('@','')
Post[dn]=Post[dn].replace('=','').replace('&','')
Post[dn]=Post[dn].replace(',','').replace('?','')
Post[dn]=strinfo.sub('',Post[dn])
sh.append([dn,Post[dn],Type[dn]])
else:
ifdn!=sheet.cell(i-1,1).value:
Post[dn]=Post[dn].replace('/','').replace(':','')
Post[dn]=Post[dn].replace('(','').replace(')','')
Post[dn]=Post[dn].replace('*','').replace(';','')
Post[dn]=Post[dn].replace('\t','').replace('\n','')
Post[dn]=Post[dn].replace('$','').replace('@','')
Post[dn]=Post[dn].replace('=','').replace('&','')
Post[dn]=Post[dn].replace(',','').replace('?','')
Post[dn]=strinfo.sub('',Post[dn])
sh.append([dn,Post[dn],Type[dn]])
else:
continue
replace('_x000D_','')
wb.save('out.csv')
以上这篇python构造IP报文实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持毛票票。