Banking Technology & Cybersecurity: Real-World Engineering
Fraud systems, payments engineering, banking malware, and what building secure financial technology looks like inside one of Africas largest retail banks.
host Command DNS Queries on macOS: 9 Examples
1. Find a list of IP addresses linked to a domain To find the IP address for a particular domain, simply pass the target domain name as an argument after the host command. For a comprehensive lookup using the verbose mode, use -a or -v flag option. The -a option is used to find all Domain records and Zone […]
Read more →Scan Your Local Network With Nikto and Nmap on macOS
Nikto is becoming one of my favourite tools. I like it because of its wide ranging use cases and its simplicity. So whats an example use case for Nikto? When I am bored right now and so I am going to hunt around my local network and see what I can find… Now lets pop […]
Read more →nmap Vulners Script: Quick Vulnerability Scanning on macOS
This is a very short post to help anyone quickly setup vulnerability checking for a site they own (and have permission to scan). I like the vulners scripts as they cover a lot of basic ground quickly with one script.
Read more →Mac Terminal: Scan TLS Certificates with NMAP and SSLScan
The below script will give you basic information on a websites certificate: NMAP is provides a simple way to get a list of available ciphers from a host website / server. Additionally, nmap provides a strength rating of strong, weak, or unknown for each available cipher. First, download the ssl-enum-ciphers.nse nmap script (explanation here). Then from the same […]
Read more →Scan SSL/TLS Ciphers With nmap and sslscan on macOS
To retrieve a list of the SSL/TLS cipher suites a particular website offers you can either use sslscan or nmap alternatively you can just use nmap (note: i use “-e en0” to bypass zscaler): Another variant (including cert dates, again “-e en0” is used to bypass zscaler):
Read more →SCP Files to EC2: Mac & Linux Command Guide
I always forget the syntax of SCP and so this is a short article with a simple example of how to SCP a file from your laptop to your EC2 instance and how to copy it back from EC2 to your laptop: Copying from Laptop to EC2 scp -i identity_file.pem source_file.extention username@public_ipv4_dns:/remote_path scp: Secure copy protocol-i: Identity […]
Read more →Fix SSH WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED
If the fingerprint of your remote host changes you will see the following error message appear: There are many ways to fix this. The easiest of which is simply to delete your “known_hosts” file. This will mean you just need to accept new finger prints on all your SSH hosts. Yes, this is very lazy…
Read more →Why Least Privilege Security Is a Lie: 3 Root Causes
In technology, there is a tendency to solve a problem badly by using gross simplification, then come up with a catchy one liner and then broadcast this as doctrine or a principle. Nothing ticks more boxes in this regard, than the principle of least privileges. The ensuing enterprise scale deadlocks created by a crippling implementation […]
Read more →SYN Flood Testing with hping3: A Practical Guide
Getting an application knocked out with a simple SYN flood is both embarrassing and avoidable. Its also very easy to create a SYN flood and so its something you should design against. Below is the hping3 command line that I use to test my services against SYN floods. I have used quite a few mods, […]
Read more →The DAO Ethereum Recursion Bug: How the Hack Worked
If you found my article, I would consider it a reasonable assumption that you already understand the importance of this
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