grugnog/amass

https://github.com/caffix/amass/blob/master/img/owasp_logo.png OWASP Amass](https://www.owasp.org/)

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---

The OWASP Amass tool obtains subdomain names by scraping data sources, recursive brute forcing, crawling web archives, permuting/altering names and reverse DNS sweeping. Additionally, Amass uses the IP addresses obtained during resolution to discover associated netblocks and ASNs. All the information is then used to build maps of the target networks.

---

!https://github.com/caffix/amass/blob/master/img/network_06092018.png "Internet Satellite Imagery"

How to Install

Prebuilt

A https://github.com/caffix/amass/releases for each release.

If your operating environment supports Snap, you can click here to install, or perform the following from the command-line:

$ sudo snap install amass

If you would like snap to get you the latest unstable build of OWASP Amass, type the following command:

$ sudo snap install --edge amass

From Source

If you would prefer to build your own ***ary from the latest version of the source code, make sure you have a correctly configured Go >= 1.10 environment. More information about how to achieve this can be found https://golang.org/doc/install Then, take the following steps:

1. Download https://github.com/caffix/amass:

$ go get -u github.com/caffix/amass

At this point, the amass ary should be in $GOPATH/.

2. Several wordlists can be found in the following directory:

$ ls $GOPATH/src/github.com/caffix/amass/wordlists/

Using the Tool

The most basic use of the tool, which includes reverse DNS lookups and name alterations:

$ amass -d example.com

If you need amass to only use the passive data sources and not resolve the names:

$ amass -nodns -d example.com

The example below is a good place to start with amass:

$ amass -v -ip -brute -min-for-recursive 3 -d example.com
[Google] www.example.com
[VirusTotal] ns.example.com
...
13139 names discovered - archive: 171, cert: 2671, scrape: 6290, brute: 991, dns: 250, alt: 2766

Add some additional domains to the enumeration:

$ amass -d example1.com,example2.com -d example3.com

Additional switches available through the amass CLI:

Have amass send all the DNS and infrastructure enumerations to the Neo4j graph database:

$ amass -neo4j neo4j:DoNotUseThisPassword@localhost:7687 -d example.com

Here are switches for outputting the DNS and infrastructure findings as a network graph:

Network/Infrastructure Options

Caution: If you use these options, amass will atte*** to reach out to every IP address within the identified infrastructure and obtain names from TLS certificates. This is "loud" and can reveal your reconnaissance activities to the organization being investigated.

All the flags shown here require the 'net' subcommand to be specified first.

To discover all domains hosted within target ASNs, use the following option:

$ amass net -asn 13374,14618

To investigate within target CIDRs, use this option:

$ amass net -cidr 192.184.113.0/24,104.154.0.0/15

For specific IPs or address ranges, use this option:

$ amass net -addr 192.168.1.44,192.168.2.1-64

By default, port 443 will be checked for certificates, but the ports can be changed as follows:

$ amass net -cidr 192.168.1.0/24 -p 80,443,8080

Integrating OWASP Amass into Your Work

If you are using the amass package within your own Go code, be sure to properly seed the default pseudo-random number generator:

go
import(
    "fmt"
    "math/rand"
    "time"

    "github.com/caffix/amass/amass"
)

func main() {
    output := make(chan *amass.AmassOutput)

    go func() {
        for result := range output {
            fmt.Println(result.Name)
        }
    }()

    // Seed the default pseudo-random number generator
    rand.Seed(time.Now().UTC().UnixNano())

    // Setup the most basic amass configuration
    config := amass.CustomConfig(&amass.AmassConfig{Output: output})
    config.AddDomains([]string{"example.com"})

    // Begin the enumeration process
    amass.StartEnumeration(config)
}

Settings for the OWASP Amass Maltego Local Transform

1. Setup a new local transform within Maltego:

!https://github.com/caffix/amass/blob/master/img/maltegosetup1.png "Setup"

2. Configure the local transform to properly execute the go program:

!https://github.com/caffix/amass/blob/master/img/maltegosetup2.png "Configure"

3. Go into the Transform Manager, and disable the debug info option:

!https://github.com/caffix/amass/blob/master/img/maltegosetup3.png "Disable Debug"

Community

• *** Server - Discussing OSINT, network recon and developing security tools using Go

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