pentest

windows-privesc-check

A long time ago, I started writing a tool to look for local privilege escalation vectors on Windows systems – e.g. weak permissions on files, directories, service registy keys.  I never quite got round to finishing it, but the project could still be useful to pentesters and auditors in its current part-finished state. I’d suggest giving it a [...]

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Posted in: Audit, Tools

Finding IP Addresses of Other Network Interfaces on Linux

The scenario for this post is that you’re connected to the local LAN of the systems you’re pentesting – possibly in a DMZ or multi-tiered architecture.  If you’re on an externally-facing LAN, you may find that there aren’t many network services to explore. As your pentest starts to look more like a vulnerability assessment, you [...]

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Posted in: Uncategorized

gateway-finder

Gateway-finder is a scapy script that will help you determine which of the systems on the local LAN has IP forwarding enabled and which can reach the Internet. This can be useful during Internal pentests when you want to quickly check for unauthorised routes to the Internet (e.g. rogue wireless access points) or routes to other [...]

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Posted in: Misc, Tools

timing-attack-checker

timing-attack-checker is a simple PERL script that helps you check for timing attacks. The most common form of timing attack I’ve noticed while pentesting is that the server may take longer to respond to a valid username than to an invalid username.  This can be handy for bruteforcing a list of valid usernames.  I’ll work [...]

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Posted in: Misc, Tools

Exposing only part of C: over Terminal Services

Ken Johnson gives a useful tip on his blog about limiting access to your local drives when you make a Terminal Services connection.  This is not new, but it’s useful enough to be worth summarizing here. When I audit a system via Terminal Services, I usually map a drive to or from the system depending on [...]

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Posted in: Uncategorized

Post-Exploitation in Windows: From Local Admin To Domain Admin (efficiently)

There are some excellent tools and techniques available to pentesters trying to convert their local admin rights into domain admin rights.  This page seeks to provide a reminder of some of the most common and useful techniques as well as rating their effectiveness to suggest which ones to try first. The premise of all the [...]

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Posted in: Uncategorized

Reverse Shell Cheat Sheet

If you’re lucky enough to find a command execution vulnerability during a penetration test, pretty soon afterwards you’ll probably want an interactive shell. If it’s not possible to add a new account / SSH key / .rhosts file and just log in, your next step is likely to be either trowing back a reverse shell or binding [...]

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Posted in: Shells

SSH Cheat Sheet

SSH has several features that are useful during pentesting and auditing.  This page aims to remind us of the syntax for the most useful features. NB: This page does not attempt to replace the man page for pentesters, only to supplement it with some pertinent examples. SOCKS Proxy Set up a SOCKS proxy on 127.0.0.1:1080 that lets [...]

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Posted in: Cheat Sheets

Exploiting A Tricky SQL Injection With sqlmap

Like many pentesters, I’m a fan of sqlmap.  It’s often the first and last tool I reach for when exploiting boolean or time-based SQL injection vulnerabilities. I wanted to briefly document a slightly tricky SQL injection issue I encountered recently and a few of the sqlmap features that impressed me most. I initially noticed that [...]

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Posted in: Blog

John The Ripper Hash Formats

John the Ripper is a favourite password cracking tool of many pentesters.  There is plenty of documentation about its command line options. I’ve encountered the following problems using John the Ripper.  These are not problems with the tool itself, but inherent problems with pentesting and password cracking in general. Sometimes I stumble across hashes on a [...]

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Posted in: Cheat Sheets