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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.

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# Exploit Title: Zortam Mp3 Media Studio 21.15 Insecure File Permissions Privilege Escalation
# Date: 23/09/2016
# Exploit Author: Tulpa
# Contact: tulpa@tulpa-security.com
# Author website: www.tulpa-security.com
# Vendor Homepage: http://www.zortam.com/
# Software Link: http://www.zortam.com/download.html
# Version: Software Version 21.15
# Tested on: Windows 10 Professional x64, Windows XP SP3 x86, Windows Server 2008 R2 x64
# Shout-out to carbonated and ozzie_offsec

1. Description:

Zortam Mp3 Media Studio installs by default to "C:\Program Files (x86)\Zortam Mp3 Media Studio\zmmspro.exe" with very weak file permissions granting any user full permission to the exe. This allows opportunity for code execution against any other user running the application.

2. Proof

C:\Program Files\Zortam Mp3 Media Studio>cacls zmmspro.exe
C:\Program Files\Zortam Mp3 Media Studio\zmmspro.exe BUILTIN\Users:F
                                                     NT AUTHORITY\SYSTEM:(ID)F
                                                     BUILTIN\Administrators:(ID)F
                                                     BUILTIN\Users:(ID)R


3. Exploit:

Simply replace zmmspro.exe and wait for execution.