From 12e6b95d4764115a639de50ee46d0883015a9599 Mon Sep 17 00:00:00 2001 From: Adam Jon Foster Date: Sun, 14 Jan 2024 12:24:47 +0800 Subject: [PATCH] Update hf_mf_uid_downgrade.lua Expanding the description for the downgrade and what causes it Signed-off-by: Adam Jon Foster --- client/luascripts/hf_mf_uid_downgrade.lua | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/client/luascripts/hf_mf_uid_downgrade.lua b/client/luascripts/hf_mf_uid_downgrade.lua index a8d243888..1829e835a 100644 --- a/client/luascripts/hf_mf_uid_downgrade.lua +++ b/client/luascripts/hf_mf_uid_downgrade.lua @@ -10,7 +10,10 @@ copyright = '' author = "Adam Foster (evildaemond)" version = 'v0.0.1' desc = [[ -Convert a facility code and card number to a Mifare Classic UID, which can be used as part of a downgrade attack. +Convert a facility code and card number to a Mifare Classic UID, which can be used as part of a downgrade attack. +This abuses the fact that some controllers interpret the UID for Mifare Classic cards as a CN and FN, it requires the controller to interpret the wiegand payload in this way. + +The example of FC 146 CN 5 would be read by the reader and send as a payload like 0920005, where 9200 is dec 146 and 05 is interpreted as 5 Working on HID Readers with any of the following enabled - Generic 14333A