subfinder
acme-dns
subfinder | acme-dns | |
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8 | 37 | |
9,381 | 1,984 | |
1.6% | - | |
9.4 | 0.0 | |
3 days ago | 19 days ago | |
Go | Go | |
MIT License | MIT License |
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subfinder
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Subdomain.center – discover all subdomains for a domain
https://github.com/projectdiscovery/subfinder does this, but it explains all the methods and lets you choose to only do a passive scan.
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Introducing Goctopus: open-source, state-of-the-art GraphQL endpoint discovery & fingerprinting tool.
Subdomain Enumeration: Goctopus uses DNS records APIs via subfinder to enumerate subdomains.
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Subdomain enumeration.
Subfinder
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Can authenticated internet-facing web app be discovered if not indexed by search engines?
My main source is Certificate Transparency, which is kind of a database of TLS certs created so far. But use external tools like Subfinder or Amass.
- Como saber todos os domínios que uma empresa tem?
- How to find out domain names registered by a particular domain registrar?
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Intellingence-Resources
Subfinder - https://github.com/projectdiscovery/subfinder
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Subdomain Enumeration
The best CLI tool for finding subdomains is subfinder. It is made by ProjectDiscovery who creates really powerful tools. They recently got funded $1.7 million so that the devs could work full time on developing and maintaining these tools.
acme-dns
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Subdomain.center – discover all subdomains for a domain
Getting a wildcard certificate from LE might be a better option, depending on how easy the extra bit of if plumbing is with your lab setup.
You need to use DNS based domain identification, and once you have a cert distribute it to all your services. The former can be automated using various common tools (look at https://github.com/joohoi/acme-dns, self-hosted unless you are only securing toys you don't really care about, if you self host DNS or your registrar doesn't have useful API access) or you can leave that as an every ~ten weeks manual job, the latter involves scripts to update you various services when a new certificate is available (either pushing from where you receive the certificate or picking up from elsewhere). I have a little VM that holds the couple of wildcard certificates (renewing them via DNS01 and acmedns on a separate machine so this one is impossible to see from the outside world), it pushes the new key and certificate out to other hosts (simple SSH to copy over then restart nginx/Apache/other).
Of course you may decide that the shin if your own CA is easier than setting all this up, as you can sign long lived certificates for yourself. I prefer this because I don't need to switch to something else if I decide to give friends/others access to something.
- Easy HTTPS for your private networks
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I've created a solution for managing internal domains, how do I selfhost this more?
As someone else said, it’s a huge pain to run your own dns services. However, if you want some separation, I recently saw https://github.com/joohoi/acme-dns
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LeGo CertHub v0.9.0 with Docker Support
v0.9.1 is out and natively supports both https://github.com/joohoi/acme-dns and any dns provider available in https://github.com/acmesh-official/acme.sh
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How do you deal with SSL certs management?
I have set up an acme-dns server to answer ACME DNS Challenges: https://github.com/joohoi/acme-dns
- How to configure and use acme-dns?
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What is a good alternative if port 80 is blocked?
The DNS challenge can be easily automated using https://github.com/joohoi/acme-dns - you do need an IP you can run a DNS server on though.
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Setting up ssl on AGH
If your server is not accessible over the internet, you can still use Let's Encrypt or ZeroSSL to get a certificate. You'll just need to set up a DNS Challenge for things to work. This is a little more complicated, but can work even if your DNS provider doesn't have an API. For example, I use Google Domains and Google DNS (not cloud DNS) for my DNS server, but I've got an instance of acme-dns running on VPS box that handles the DNS auth for me. It's how every machine on my local network has valid certificates - but I annoyingly need to renew them every 90 days.
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Did Manjaro just forget to renew the SSL certificate?
It's a bit more involved, but you can set up wildcard certificates to update automatically. Certbot has some pre-made plugins for this for several DNS providers. If yours is not on that list, there's a tool called acme-dns which is a minimal DNS server you can run on your server and delegate _acme-challenge.yourdomain.com to. If you don't want to run that on your own, you can also use the publicly hosted server/API for it.
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Reverse proxy for internally hosted services
In case you're not already familiar with it: one thing I'd recommend is using https://github.com/joohoi/acme-dns to obtain the certificates. You basically just point the subdomain you need wildcard certs for at that DNS server (a one time thing, ie you don't have to do this every three months), and the related tool https://github.com/acme-dns/acme-dns-client can get the certificates in a nice, automated, way without you ever having to expose the private reverse proxy to the Internet.
What are some alternatives?
amass - In-depth attack surface mapping and asset discovery
Nginx Proxy Manager - Docker container for managing Nginx proxy hosts with a simple, powerful interface
assetfinder - Find domains and subdomains related to a given domain
lego - Let's Encrypt/ACME client and library written in Go
httprobe - Take a list of domains and probe for working HTTP and HTTPS servers
duckdns - Caddy module: dns.providers.duckdns
breach-parse - A tool for parsing breached passwords
acme-dns-server - Simple DNS server for serving TXT records written in Python
gowitness - 🔍 gowitness - a golang, web screenshot utility using Chrome Headless
acme.sh - A pure Unix shell script implementing ACME client protocol
subby - An uber fast and simple subdomain enumeration tool using DNS and web requests with support for detecting wildcard DNS records.
dehydrated - letsencrypt/acme client implemented as a shell-script – just add water