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(2019 / 2021) AppSec is often very heavily focused on pre-exploitation. Frameworks like BeEF break this norm a little and can be used as tools to move laterally from the browser, to implant malware on adjacent machines. Unfortunately, performing network reconnaissance with JavaScript becomes tricky if the victim doesn't keep the tab open for long.
This presentation will discuss relatively new techniques and features of JavaScript that have made it easier for sophisticated threat actors to craft JavaScript payloads that target internal network vulnerabilities, as fast as a person can think to close a tab. We'll also show new reconnaissance techniques traditionally used by red teams, post-malware implant, that can be used to get a foothold onto a network from a browser, pre-malware implant. We'll also show some real examples of this, crafting external payloads that target internal assets at large companies, and we'll show how responsible disclosure for intranet facing bugs typically gets resolved.
