Gary's Cybersecurity Cheat Sheets

Common Remote Desktop Protocol (RDP) Vulnerabilities Terminal Services Encryption Level is Medium or Low Microsoft Windows Remote Desktop Protocol Server Man-in-the-Middle Weakness Terminal Services Doesn't Use Network Level Authentication (NLA) Only Terminal Services Encryption Level is Medium or Low Vulnerability Assessment: Host Assessment: Remediation: Local Computer Policy/Computer Configuration/Administrative Templates/Windows Components/Remote Desktop Services/Remote Desktop Session Host/Security/Set client connection encryption level Set client connection encryption level to High Note: High: The High setting encrypts data sent from the client to the server and from the server to the client by using strong 128-bit encryption. Use this encryption level in environments that contain only 128-bit clients (for example, clients that run Remote Desktop Connection). Clients that do not support this encryption level cannot connect to RD S...

Manual Vulnerability Assessment TCP/21: FTP Anonymous FTP Enabled anonymous guest TCP/22: SSH nmap -p 22 --script ssh2-enum-algos <ip_address> SSH Weak Algorithms Supported SSH Server CBC Mode Ciphers Enabled ssh -oCiphers=<ciphers> <ip_address> SSH Weak MAC Algorithms Enabled ssh -oMACs=<algorithm> <ip_address> SSH Protocol v1 Supported ssh -1 <ip_address> -v Hardening on SSH Ciphers aes256-ctr,aes192-ctr,aes128-ctr MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com TCP/23: Telnet Unencrypted Telnet Server telnet <ip_address> 23 TCP/25: SMTP SMTP Service Cleartext Login Permitted telnet <ip_address> 25 EHLO <ip_address> AUTH LOGIN Mailserver answer to VRFY and EXPN requests * nc <ip_address> 25 EXPN root VRFY root TCP/53: DNS DNS Server Cache Snooping Remote Information Disclosure ...

Installation Damn Vulnerable Web Services  (DVWS) is an insecure web application with multiple vulnerable web service components that can be used to learn real world web service vulnerabilities. https://github.com/snoopysecurity/dvws WSDL Enumeration Spider DVWS using Burp Suite and look for service.php Requests processed by SOAP service include  check_user_information ,  owasp_apitop10 ,  population  and  return_price XPATH Injection User Login: 1' or '1'='1 User Password: 1' or '1'='1 Command Injection Original Request parameter value of name is " find "   by default  Edited Request change the parameter value of  name  from "find" to " dir "   Cross Site Tracing (XST) Hint of " The NuSOAP Library service is vulnerable to a Cross-site scripting flaw " is given by DVWS. Exploit is published at exploit DB ( https://www.exploit-db.com/e...

Common SMB related vulnerabilities Microsoft Windows SMBv1 Multiple Vulnerabilities SMB Signing Disabled Microsoft Windows SMB NULL Session Authentication Microsoft Windows SMB Shares Unprivileged Access Network Discovery: TCP port 5357 - Web Services on Devices API (WSDAPI) File and Printer Sharing: TCP port 135 - Remote Procedure Call (RPC) TCP port 139 - NETBIOS Session Service TCP port 445 - Server Message Block (SMB) By disable NetBIOS over TCP/IP (TCP Port 139), NETBIOS name discovery will be prevented Microsoft Windows SMBv1 Multiple Vulnerabilities Vulnerability Assessment: NSE script smb-protocols can be used to check if the server supported NT LM 0.12 (SMBv1) . Host Assessment: Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters | ForEach-Object {Get-ItemProperty $_.pspath} Remediation: Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters...

This cheat sheet compiles the commands we learned to exploit vulnerable machines. However, these commands alone may not be sufficient to obtain your Offensive Security Certified Professional (OSCP) certification. So... Try Harder! Information Gathering Operating System Windows Interesting Path "Documents and Settings"/Administrator/Desktop file:///C:/xampp/readme_en.txt file:///C:/xampp/passwords.txt file:///C:/xampp/webdav/webdav.txt file:///C:/xampp/apache/conf/extra/httpd-dav.conf file:///C:/xampp/apache/conf/extra/httpd-xampp.conf file:///C:/xampp/apache/logs/access.log file:///C:/xampp/apache/logs/error.log file:///C:/xampp/security/webdav.htpasswd file:///C:/xampp/htdocs/dashboard/phpinfo.php file:///C:/xampp/phpmyadmin/config.inc.php file:///C:/xampp/php/logs/php_error_log file:///C:/xampp/mysql/bin/my.ini C:\Users\<User>\AppData\Local\Temp #Email Address C:\Users\<User>\AppData\Local\Microsoft\Outlook Active Connection netstat -...

OS Information Gathering systeminfo wmic computersystem get domainrole 0 - Standalone workstation 1 - Member workstation 2 - Standalone server 3 - Member server 4 - Domain controller secedit /export /cfg cfg.ini > nul net user administrator > netuseradmin.txt auditpol.exe /get /category:* > auditpol.txt netsh advfirewall show allprofiles > firewall.txt net accounts > netaccount.txt gpresult /f /h evid/gporesult.html > nul accesschk /accepteula -q -a * > accesschk.txt *Simplify the process with Scgary ! User Right Assignment type cfg.ini | grep "^SeAuditPrivilege\|^SeCreatePagefilePrivilege\|^SeRemoteShutdownPrivilege\|^SeRemoteInteractiveLogonRight\|^SeEnableDelegationPrivilege\|^SeLockMemoryPrivilege\|^SeDenyNetworkLogonRight\|^SeChangeNotifyPrivilege\|^SeDebugPrivilege\|^SeDenyBatchLogonRight\|^SeCreateGlobalPrivilege\|^SeShutdownPrivilege\|^SeIncreaseQuotaPrivilege\|^SeTrustedCredManAccessPrivilege\|^SeDenyIn...

Reference: https://tomcat.apache.org/tomcat-8.0-doc/security-howto.html 1. Remove Extraneous Resources Removing sample resources C:\xampp\Tomcat\webapps\docs C:\xampp\Tomcat\webapps\examples Removing Manager Application if not using C:\xampp2\Tomcat\webapps\host-manager C:\xampp2\Tomcat\webapps\manager C:\xampp2\Tomcat\conf\Catalina\localhost\manager.xml Disable unused Connector C:\xampp2\tomcat\conf\server.xml cat server.xml | grep "Connector" 2. Limit Server Platform Information Leaks Alter the Advertised server information Audit: cd $CATALINA_HOME/lib jar xf catalina.jar org/apache/catalina/util/ServerInfo.properties grep server.info org/apache/catalina/util/ServerInfo.properties Remediation: server.info=<SomeWebServer> server.number=<someversion> server.built= Disable X-Powered-By HTTP Header and Rename the Server Value for all Connectors Turn off TRACE Affected file: $CATALINA_HOME/conf/server.xml Remediation:...

The Cheat Sheets offer a variety of information security cheat sheets on various security assessments and provides code to simplify testing and verification processes. Penetration Testing Network CMS - WordPress Mobile - Android Mobile - iOS Web Service (API) Security Damn Vulnerable Web Services - Walkthrough OWASP Series 2017  A1 Injection 2017  A3 Sensitive Data Exposure 2017  A4 XML External Entities (XXE) 2017 A6 Security Misconfiguration 2017 A7 Cross-Site Scripting (XSS) 2017 A8 Insecure Deserialization Configuration Assessment Windows Linux Network Device Web Server Hardening Apache PHP MySQL SSL Security Database Assessment Oracle PostgreSQL Database Assessment Tool Host Device Hardening Server Message Block (SMB) Security Remote Desktop Protocol (RDP) Security Social Engineering Social Engineering Testing - Phishing Email Security Malware Exploitation using Shell Post Exploitation Physical ...

Testing Environment Android Emulator Geny Motion: https://www.genymotion.com/fun-zone/ Android Debug Bridge (ADB) C:\Users\<User>\AppData\Local\Android\Sdk\platform-tools adb -s <specific device> shell #Specific Device adb -d shell #Device adb -e shell #Emulator Basic ADB command adb install <apk file> adb pull <location> adb push <file> <location> Basic Linux command cat /proc/version #Kernel version cat /proc/cpuinfo #Processor Information ps #Processes cat /system/etc/permissions/platform.xml #Permission and GID Information Gathering Retrieve APK file from Device (Recommended) adb shell pm list packages pm path <package> adb pull <apk path> Retrieve APK file from Internet https://apkpure.com To check the certificate information keytool -printcert -file CERT.RSA #C:\Program Files\Java\jre1.8.0_131\bin\keytool.exe Android Manifest Analysis 1. Activity, Service, Content Provider, Broadcast ...

XSS flaws occur whenever an application includes untrusted data in a new web page without proper validation or escaping, or updates an existing web page with user-supplied data using a browser API that can create HTML or JavaScript. XSS allows attackers to execute scripts in the victim's browser which can hijack user sessions, deface web sites, or redirect the user to malicious sites. DOM-Based XSS Proof of Concept <html> <head> <title>DOM-based Cross-site Scripting</title> </head> <body> Hi, <script> var pos = document.URL.indexOf("name=")+5; //finds the position of value var userInput = document.URL.substring(pos,document.URL.length); //copy the value into userInput variable document.write(unescape(userInput));  //writes content to the webpage </script> </body> </html> XSS Validation Bypass <Script>alert(1)</script> <script<script>>alert(1)</script> <svg onload=...