mirror of
https://github.com/adulau/active-scanning-techniques.git
synced 2024-11-23 02:27:09 +00:00
79 lines
2.4 KiB
Markdown
79 lines
2.4 KiB
Markdown
# Active Scanning Techniques
|
|
|
|
This repository is a collection of different techniques in order to find specific hosts to scan. The goal is to document the available techniques and
|
|
improve the scanning for defenders.
|
|
|
|
## Why this collection?
|
|
|
|
- Finding vulnerable devices can be challenging for CSIRTs (waiting for the next scan in Shodan, Censys).
|
|
- Finding the scope of the scan (regional versus global, wrong IRR allocation).
|
|
- Discovering newly devices exposed without scanning the whole IPv4 space.
|
|
- Discovering named-based services (many services are based on name such as HTTP virtual-host, TLS SNI).
|
|
- Discovering newly exposed devices or services using IPv6 addresses.
|
|
|
|
# Overview
|
|
|
|
|
|
|
|
# Slides
|
|
|
|
- [Improving Internet Wide Scanning with Dynamic Scanning](https://github.com/adulau/active-scanning-techniques/blob/main/slides/active-scanning.pdf)
|
|
|
|
# Techniques
|
|
|
|
## (TAS.1) Certificate Transparency
|
|
|
|
### (TAS.1.1) Extract subjectAltName
|
|
|
|
- Resolving AAAA
|
|
|
|
- Adding most common hostname (short dictionary list)
|
|
- DNS brute-forcing
|
|
|
|
- SDBF
|
|
- fierce
|
|
- dnsenum
|
|
|
|
## (TAS.2) Newly registered domains
|
|
|
|
## (TAS.3) Passive DNS feed
|
|
|
|
### (TAS.3.1) Extract CNAME, RRNAME
|
|
|
|
### (TAS.3.2) Extract AAAA
|
|
|
|
## (TAS 4) BGP Monitoring
|
|
|
|
## (TAS 5) Discovering active IPv6 subnet from an IPv6 address
|
|
|
|
### (TAS 5.1) Finding CIDR from RIR whois
|
|
|
|
### (TAS 5.2) Active monitoring of public services logs (HTTP servers, public NTP servers)
|
|
|
|
## (TAS 6) Blackhole network monitoring
|
|
|
|
### (TAS 6.1) Extracting IPv6 addresses from GRE packets
|
|
|
|
### (TAS 6.2) All protocols extraction "tshark -n -r $FILENAME -E separator="/n" -E occurrence=a -T fields -e ipv6.src ipv6.dst | sort -u | gzip -f
|
|
"
|
|
|
|
## (TAS 7) Bitorrent GET_PEERS N6 request
|
|
|
|
## (TAS 8) Guessing IPv6 addresses by using most common IPv6 manual allocations from an IPv6 subnet
|
|
|
|
### (TAS 8.1) Enumerating easy to remember hex block (CAFE, DEAD, BEEF, ABBA, FFFF, ....)
|
|
|
|
### (TAS 8.2) Enumerating TCP/UDP service port as last part
|
|
|
|
## (TAS 9) DomainClassifier extraction (brute-force extraction of potential hostnames)
|
|
|
|
### (TAS 9.1) GitHub commit streams
|
|
|
|
### (TAS 9.2) Active crawling from CT logs
|
|
|
|
### (TAS 9.3) Other sources such as social networks, pasties website, ....
|
|
|
|
## (TAS 10) Extract potential hostname from IPv4 reverse PTR
|
|
|
|
### (TAS 10.1) Enumerating IPv4/PTR
|
|
|