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UID:pretalx-pts2023-ZQAXNB@cfp.pass-the-salt.org
DTSTART;TZID=CET:20230705T112500
DTEND;TZID=CET:20230705T114500
DESCRIPTION:Edition of DER encoded ASN.1 structures is a pretty tedious wor
 k when done manually.\nSolutions to this problem exist. For instance\, der
 -ascii [0] is a tool written in Go that helps with back and forth conversi
 ons from/to DER structures to/from a textual representation using a custom
  defined language.\nI present a somehow short Perl script [1] that leverag
 es the OpenSSL configuration language along with the ```ASN1_generate_ncon
 f(3)``` function in order to achieve the same goal with almost no dependen
 cies apart from Perl and OpenSSL.\nThis tool can be used to ease the explo
 itation of CVE-2022-0778 [2] & [3].\n\n[0] https://github.com/google/der-a
 scii\n[1] https://github.com/wllm-rbnt/asn1template\n[2] https://www.opens
 sl.org/news/secadv/20220315.txt\n[3] https://github.com/drago-96/CVE-2022-
 0778#using-asn1-templates
DTSTAMP:20260811T225946Z
LOCATION:Amphitheater
SUMMARY:ASN.1 templating for fun and profit - William Robinet
URL:https://cfp.pass-the-salt.org/pts2023/talk/ZQAXNB/
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