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bugfixes attachment, multipart mail

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This commit is contained in:
Daniel Ashton
2021-01-14 16:53:06 +01:00
parent b7a1917528
commit 3cdbbffa4b
1 changed files with 16 additions and 12 deletions
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28
mailrelay.py
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@@ -1,18 +1,20 @@
#!/usr/bin/env python3
# quick and dirty test script for smtp relay
# 250 2.0.0 0BHI16hQ021841-0BHI16hR021841 Message accepted for delivery
# fortinet session
#
# Done
# ----
# add cc, bcc and lists
# add colors
# add list of receivers
# add custom attachment
# fix <False> CC/BCC if not given
# fix attachment name to auto name from the file
# fix multipart issues
#
# Todo
# ----
# add response check
# add custom attachment
# add auth for sender if login is supported
import os
import sys
@@ -23,7 +25,7 @@ import random
import argparse
__tool_name__ = 'mailrelay.py'
__tool_version__ = '0.3.1'
__tool_version__ = '0.3.3'
__tool_author__ = 'dash'
__tool_desc__ = 'not so quick but dirty\'n\'dirty tool for smtp relay checks, nothing fancy here.'
@@ -240,7 +242,7 @@ def run(args):
# send CC Mail
custData = 'CC: <{0}>\r\n'.format(targetCcMail)
sendCustom(sock,custData,False)
else:
elif targetCcMail:
# initiate DATA block for mailcontent
custData = 'CC: <{0}>\r\n'.format(targetCcMail)
sendCustom(sock,custData,False)
@@ -255,7 +257,7 @@ def run(args):
custData = 'CC: <{0}>\r\n'.format(targetBccMail)
sendCustom(sock,custData,False)
else:
elif targetBccMail:
# initiate DATA block for mailcontent
custData = 'BCC: <{0}>\r\n'.format(targetBccMail)
sendCustom(sock,custData,False)
@@ -267,18 +269,20 @@ def run(args):
if attachment:
buf=openFileRead(attachment)
attachmentB64 = base64.b64encode(buf)
attachmentB64 = attachmentB64.decode('utf-8')
# i should patent that crap
rndBoundary = int((str(random.random()+1)).replace('.',''))
bndry = '==============={0}=='.format(rndBoundary)
ct = 'Content-Type: multipart/mixed; boundary="{0}"'.format(bndry)
ct2 = 'MIME-Version: 1.0'
bndry = '{0}'.format(rndBoundary)
#bndry = '==============={0}=='.format(rndBoundary)
ct = 'Content-Type: multipart/mixed; boundary="{0}"\r\n'.format(rndBoundary)
ct2 = 'MIME-Version: 1.0\r\n'
sendCustom(sock,ct,False)
sendCustom(sock,ct2,False)
ctbody = '--{0}\r\nContent-Type: text/plain; charset="us-ascii"\r\nMIME-Version: 1.0\r\nContent-Transfer-Encoding: 7bit\r\n\r\n{1}\r\n'.format(bndry,body)
ctbody = '--{0}\r\nContent-Type: text/plain; charset="us-ascii"\r\nMIME-Version: 1.0\r\nContent-Transfer-Encoding: 7bit\r\n\r\n{1}\r\n\r\n'.format(bndry,body)
sendCustom(sock,ctbody,False)
ctattach = '--{0}\r\nContent-Type: application/octet-stream\r\nMIME-Version: 1.0\r\nContent-Transfer-Encoding: base64\r\nContent-Disposition: attachment; filename={1}\r\n\r\n{2}\r\n\r\n--{0}\r\n'.format(bndry,attachmentName, attachmentB64)
ctattach = '--{0}\r\nContent-Type: application/octet-stream\r\nMIME-Version: 1.0\r\nContent-Transfer-Encoding: base64\r\nContent-Disposition: attachment; filename={1}\r\n\r\n{2}\r\n\r\n--{0}\r\n\r\n'.format(bndry,attachmentName, attachmentB64)
sendCustom(sock,ctattach,False)
else:
body = '{0}\r\n'.format(body)
@@ -312,7 +316,7 @@ def main():
parser.add_argument("-s","--email-subject",action="store",required=False,help='the subject',dest='subject',default='Imptant Notice about your paypal account')
parser.add_argument("-b","--email-body",action="store",required=False,help='the body, e.g. \'hi there, this is a massivtest. please ignore.\'',dest='body',default='Sorry, you have been hacked.')
parser.add_argument("-a","--attachment",action="store",required=False,help='send attachment',dest='attachment',default=False)
parser.add_argument("-A","--attachment-name",action="store",required=False,help='send attachment',dest='attachmentName',default="ls.file")
parser.add_argument("-A","--attachment-name",action="store",required=False,help='send attachment',dest='attachmentName',default=False)
parser.add_argument("-m","--mta",action="store",required=False,help='the mta, FORMAT:<smtp>:<port>, e.g. smtp.provider.m:25',dest='mtaAddr',default='smtp.gmail.com:25')
if len(sys.argv)==1: