Software Security

Certificate Generator

Issue fresh Let’s Encrypt certificates for the training VM domains

Currently Distributed

attacat.de

Valid
Issued
2026-09-06 05:43 UTC
Expires
2026-12-05 05:43 UTC
Remaining
80 days
Issuer
YR2
Serial
063D241CC66AF5D988BF1622501EC72FB5D1
Chain
3 certs
Private key
present
File written
2026-09-06 06:41 UTC

vulnerads.de

Valid
Issued
2026-09-06 05:43 UTC
Expires
2026-12-05 05:43 UTC
Remaining
80 days
Issuer
YR1
Serial
065E7E18B24C5166C06E901484A0A6E8B105
Chain
3 certs
Private key
present
File written
2026-09-06 06:41 UTC
Bundle certs.tar built 2026-09-06 06:41 UTC (19.0 KB)

KAS Credentials

Issues certificates for vulnerads.de and attacat.de via the Let’s Encrypt dns-01 challenge. The _acme-challenge TXT records are created and removed automatically through the All-Inkl KAS API, and the result is packed into certs.tar for the VMs to pick up at boot.

Fixed server-side

Valid for ~30 seconds

A run can take several minutes while DNS propagates.

Credentials are posted straight to certgen_post.php on this host and are never stored in the browser.