From 8537b3fee854caeebb1b5905e5c623b8042f383e Mon Sep 17 00:00:00 2001 From: Samuele Guerrini Date: Sun, 6 Jan 2019 15:20:45 +0100 Subject: [PATCH] Warning on the PCF7931 bruteforce command --- client/cmdlfpcf7931.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/client/cmdlfpcf7931.c b/client/cmdlfpcf7931.c index 559f6d18..9882da5f 100644 --- a/client/cmdlfpcf7931.c +++ b/client/cmdlfpcf7931.c @@ -80,11 +80,13 @@ int usage_pcf7931_write(){ int usage_pcf7931_bruteforce() { PrintAndLog("Usage: lf pcf7931 bruteforce [h] "); - PrintAndLog("This command tries to write a PCF7931 tag."); + PrintAndLog("This command tries to disable PAC of a PCF7931 transponder by bruteforcing the password."); + PrintAndLog("!! THIS IS NOT INTENDED TO RECOVER THE FULL PASSWORD !!"); + PrintAndLog("!! DO NOT USE UNLESS THE FIRST 5 BYTES OF THE PASSWORD ARE KNOWN !!"); PrintAndLog("Options:"); - PrintAndLog(" h This help"); + PrintAndLog(" h This help"); PrintAndLog(" start password hex password to start from"); - PrintAndLog(" tries How many times to send the same data frame"); + PrintAndLog(" tries How many times to send the same data frame"); PrintAndLog("Examples:"); PrintAndLog(" lf pcf7931 bruteforce 00000000123456 3"); return 0;