mirror of
https://github.com/drwetter/testssl.sh.git
synced 2024-12-31 22:09:44 +01:00
now checker fo SSLv3 to TLSV1.2
(SNI missing for now)
This commit is contained in:
Dirk
parent
cedeff2b42
commit
f0747dd2fc
355
utils/prototype.tls-protocol-checker.bash
Executable file
355
utils/prototype.tls-protocol-checker.bash
Executable file
@ -0,0 +1,355 @@
|
||||
#!/usr/bin/env bash
|
||||
|
||||
# bash socket implementation of checking the availability of TLS, (SSLv3 to TLS 1.2)
|
||||
# Based on my bash-heartbleed (loosely based on my bash-heartbleed implementation)
|
||||
#
|
||||
# Author: Dirk Wetter, GPLv2 see https://testssl.sh/LICENSE.txt
|
||||
|
||||
# it helps to wireshark:
|
||||
# /<path>/openssl s_client -state -ssl3 -connect AA.BB.YYY.XXX:443 -servername target
|
||||
# /<path>/openssl s_client -state -tls1 -connect AA.BB.YYY.XXX:443 -servername target
|
||||
# /<path>/openssl s_client -state -tls1_1 -connect AA.BB.YYY.XXX:443 -servername target
|
||||
# /<path>/openssl s_client -state -tls1_2 -connect AA.BB.YYY.XXX:443 -servername target
|
||||
#
|
||||
# debug is easier for response:
|
||||
# /<path>/openssl s_client -tls1 -debug -connect target:443 </dev/null
|
||||
|
||||
|
||||
# todo: SNI
|
||||
# todo: NPN (/<path>/openssl s_client -host target -port 443 -nextprotoneg 'spdy/4a2,spdy/3,spdy/3.1,spdy/2,spdy/1,http/1.1'
|
||||
# todo: TLS 1.3 (https://tools.ietf.org/html/draft-ietf-tls-tls13-03#section-7.4)
|
||||
# todo: DTLS (https://tools.ietf.org/html/rfc4347#section-4.2.2)
|
||||
|
||||
IFILE=./mapping-rfc.txt
|
||||
NODE=""
|
||||
COL_WIDTH=32
|
||||
DEBUG=${DEBUG:-0}
|
||||
USLEEP_REC=${USLEEP_REC:-0.2}
|
||||
USLEEP_SND=${USLEEP_SND:-0.1} # 1 second wait until otherwise specified
|
||||
MAX_WAITSOCK=2
|
||||
SOCK_REPLY_FILE=""
|
||||
NW_STR=""
|
||||
LEN_STR=""
|
||||
DETECTED_TLS_VERSION=""
|
||||
|
||||
# spdy, TLS 1.2, 133 cipher:
|
||||
TLS12_CIPHER="
|
||||
cc, 14, cc, 13, cc, 15, c0, 30, c0, 2c, c0, 28, c0, 24, c0, 14,
|
||||
c0, 0a, c0, 22, c0, 21, c0, 20, 00, a5, 00, a3, 00, a1, 00, 9f,
|
||||
00, 6b, 00, 6a, 00, 69, 00, 68, 00, 39, 00, 38, 00, 37, 00, 36,
|
||||
c0, 77, c0, 73, 00, c4, 00, c3, 00, c2, 00, c1, 00, 88, 00, 87,
|
||||
00, 86, 00, 85, c0, 32, c0, 2e, c0, 2a, c0, 26, c0, 0f, c0, 05,
|
||||
c0, 79, c0, 75, 00, 9d, 00, 3d, 00, 35, 00, c0, 00, 84, c0, 2f,
|
||||
c0, 2b, c0, 27, c0, 23, c0, 13, c0, 09, c0, 1f, c0, 1e, c0, 1d,
|
||||
00, a4, 00, a2, 00, a0, 00, 9e, 00, 67, 00, 40, 00, 3f, 00, 3e,
|
||||
00, 33, 00, 32, 00, 31, 00, 30, c0, 76, c0, 72, 00, be, 00, bd,
|
||||
00, bc, 00, bb, 00, 9a, 00, 99, 00, 98, 00, 97, 00, 45, 00, 44,
|
||||
00, 43, 00, 42, c0, 31, c0, 2d, c0, 29, c0, 25, c0, 0e, c0, 04,
|
||||
c0, 78, c0, 74, 00, 9c, 00, 3c, 00, 2f, 00, ba, 00, 96, 00, 41,
|
||||
00, 07, c0, 11, c0, 07, 00, 66, c0, 0c, c0, 02, 00, 05, 00, 04,
|
||||
c0, 12, c0, 08, c0, 1c, c0, 1b, c0, 1a, 00, 16, 00, 13, 00, 10,
|
||||
00, 0d, c0, 0d, c0, 03, 00, 0a, 00, 63, 00, 15, 00, 12, 00, 0f,
|
||||
00, 0c, 00, 62, 00, 09, 00, 65, 00, 64, 00, 14, 00, 11, 00, 0e,
|
||||
00, 0b, 00, 08, 00, 06, 00, 03, 00, ff
|
||||
"
|
||||
|
||||
# 76 cipher fuer SSLv3, TLS 1, TLS 1.1:
|
||||
TLS_CIPHER="
|
||||
c0, 14, c0, 0a, c0, 22, c0, 21, c0, 20, 00, 39, 00, 38, 00, 37,
|
||||
00, 36, 00, 88, 00, 87, 00, 86, 00, 85, c0, 0f, c0, 05, 00, 35,
|
||||
00, 84, c0, 13, c0, 09, c0, 1f, c0, 1e, c0, 1d, 00, 33, 00, 32,
|
||||
00, 31, 00, 30, 00, 9a, 00, 99, 00, 98, 00, 97, 00, 45, 00, 44,
|
||||
00, 43, 00, 42, c0, 0e, c0, 04, 00, 2f, 00, 96, 00, 41, 00, 07,
|
||||
c0, 11, c0, 07, 00, 66, c0, 0c, c0, 02, 00, 05, 00, 04, c0, 12,
|
||||
c0, 08, c0, 1c, c0, 1b, c0, 1a, 00, 16, 00, 13, 00, 10, 00, 0d,
|
||||
c0, 0d, c0, 03, 00, 0a, 00, 63, 00, 15, 00, 12, 00, 0f, 00, 0c,
|
||||
00, 62, 00, 09, 00, 65, 00, 64, 00, 14, 00, 11, 00, 0e, 00, 0b,
|
||||
00, 08, 00, 06, 00, 03, 00, ff"
|
||||
|
||||
|
||||
# example 1: for SNI
|
||||
#00 00 # extention server_name
|
||||
#00 0b # length
|
||||
#00 09 # server_name list_length
|
||||
#00 # server_name type (hostname)
|
||||
#00 06 # server_name length
|
||||
#66 66 66 66 66 66 # server_name target
|
||||
|
||||
# example 2: for SNI
|
||||
#00 00 00 1a 00 18 00 00 15 66 66 66 66 66 66 2e .........target.
|
||||
#66 66 66 66 66 66 66 66 66 66 2e 66 66 66 mydomain1.tld
|
||||
|
||||
#formatted:
|
||||
#00 00
|
||||
#00 1a
|
||||
#00 18
|
||||
#00
|
||||
#00 15
|
||||
#66 66 66 66 66 66 2e 66 66 66 66 66 66 66 66 66 66 2e 66 66 66 target.mydomain1.tld
|
||||
|
||||
|
||||
help() {
|
||||
echo "Syntax $0 <hostname> [[TLS lsb]]"
|
||||
echo
|
||||
echo "example: $0 google.com "
|
||||
echo
|
||||
exit 1
|
||||
}
|
||||
|
||||
|
||||
parse_hn_port() {
|
||||
PORT=443 # unless otherwise auto-determined, see below
|
||||
NODE="$1"
|
||||
|
||||
# strip "https", supposed it was supplied additionally
|
||||
echo $NODE | grep -q 'https://' && NODE=`echo $NODE | sed -e 's/https\:\/\///' `
|
||||
|
||||
# strip trailing urlpath
|
||||
NODE=`echo $NODE | sed -e 's/\/.*$//'`
|
||||
|
||||
# determine port, supposed it was supplied additionally
|
||||
echo $NODE | grep -q ':' && PORT=`echo $NODE | sed 's/^.*\://'` && NODE=`echo $NODE | sed 's/\:.*$//'`
|
||||
|
||||
# servername to network bytes:
|
||||
SNIHEX=`printf $NODE | hexdump -v -e '16/1 "%02X"'`
|
||||
}
|
||||
|
||||
# arg1: formatted string here in the code
|
||||
code2network() {
|
||||
NW_STR=`echo "$1" | sed -e 's/,/\\\x/g' | sed -e 's/# .*$//g' -e 's/ //g' -e '/^$/d' | tr -d '\n' | tr -d '\t'`
|
||||
}
|
||||
|
||||
len2twobytes() {
|
||||
len_arg1=`echo ${#1}`
|
||||
[[ $len_arg1 -le 2 ]] && LEN_STR=`printf "00, %02s \n" $1`
|
||||
[[ $len_arg1 -eq 3 ]] && LEN_STR=`printf "%02s, %02s \n" ${1:0:1} ${1:1:2}`
|
||||
[[ $len_arg1 -eq 4 ]] && LEN_STR=`printf "%02s, %02s \n" ${1:0:2} ${1:2:2}`
|
||||
}
|
||||
|
||||
|
||||
# arg1: TLS_VER_LSB
|
||||
# arg2: CIPHER_SUITES string
|
||||
# arg3: SERVERNAME
|
||||
# ??? more extensions?
|
||||
socksend_clienthello() {
|
||||
|
||||
if [[ "$1" != "ff" ]]; then # internally we use 00 to indicate SSLv2
|
||||
len_sni=`echo ${#3}`
|
||||
#len_ciph_suites=`echo ${#SNIHEX}`
|
||||
|
||||
code2network "$2"
|
||||
cipher_suites="$NW_STR" # we don't have the leading \x here so string length is two byte less, see next
|
||||
|
||||
len_ciph_suites_byte=`echo ${#cipher_suites}`
|
||||
let "len_ciph_suites_byte += 2"
|
||||
|
||||
# we have additional 2 chars \x in each 2 byte string and 2 byte ciphers, so we need to divide by 4:
|
||||
len_ciph_suites=`printf "%X\n" $(($len_ciph_suites_byte / 4 ))`
|
||||
len2twobytes "$len_ciph_suites"
|
||||
len_ciph_suites_word="$LEN_STR"
|
||||
[[ $DEBUG -ge 4 ]] && echo $len_ciph_suites_word
|
||||
|
||||
len2twobytes `printf "%X\n" $((0x$len_ciph_suites + 0x27))`
|
||||
len_c_hello_word="$LEN_STR"
|
||||
[[ $DEBUG -ge 4 ]] && echo $len_c_hello_word
|
||||
|
||||
len2twobytes `printf "%X\n" $((0x$len_ciph_suites + 0x2b))`
|
||||
len_all_word="$LEN_STR"
|
||||
[[ $DEBUG -ge 4 ]] && echo $len_all_word
|
||||
|
||||
TLS_CLIENT_HELLO="
|
||||
# TLS header ( 5 bytes)
|
||||
,16, 03, $1 # TLS Version
|
||||
,$len_all_word # Length
|
||||
# Handshake header:
|
||||
,01 # Type (x01 for ClientHello)
|
||||
,00, $len_c_hello_word # Length ClientHello
|
||||
,03, $1 # TLS Version (again)
|
||||
,54, 51, 1e, 7a # Unix time since see www.moserware.com/2009/06/first-few-milliseconds-of-https.html
|
||||
,de, ad, be, ef # Random 28 bytes
|
||||
,31, 33, 07, 00, 00, 00, 00, 00
|
||||
,cf, bd, 39, 04, cc, 16, 0a, 85
|
||||
,03, 90, 9f, 77, 04, 33, d4, de
|
||||
,00 # Session ID length
|
||||
,$len_ciph_suites_word # Cipher suites length
|
||||
# Cipher suites
|
||||
,$cipher_suites
|
||||
,01 # Compression methods length
|
||||
,00 # Compression method (x00 for NULL)
|
||||
"
|
||||
fi
|
||||
|
||||
code2network "$TLS_CLIENT_HELLO"
|
||||
data=`echo $NW_STR`
|
||||
|
||||
[[ "$DEBUG" -ge 3 ]] && echo "\"$data\""
|
||||
printf -- "$data" >&5 2>/dev/null &
|
||||
sleep $USLEEP_SND
|
||||
echo
|
||||
}
|
||||
|
||||
sockread_serverhello() {
|
||||
[[ "x$2" = "x" ]] && maxsleep=$MAX_WAITSOCK || maxsleep=$2
|
||||
ret=0
|
||||
|
||||
SOCK_REPLY_FILE=`mktemp /tmp/ddreply.XXXXXX` || exit 7
|
||||
dd bs=$1 of=$SOCK_REPLY_FILE count=1 <&5 2>/dev/null &
|
||||
pid=$!
|
||||
|
||||
while true; do
|
||||
if ! ps ax | grep -v grep | grep -q $pid; then
|
||||
break # didn't reach maxsleep yet
|
||||
kill $pid >&2 2>/dev/null
|
||||
fi
|
||||
sleep $USLEEP_REC
|
||||
maxsleep=$(($maxsleep - 1))
|
||||
[[ $maxsleep -le 0 ]] && break
|
||||
done
|
||||
|
||||
if ps ax | grep -v grep | grep -q $pid; then
|
||||
# time's up and dd is still alive --> timeout
|
||||
kill $pid >&2 2>/dev/null
|
||||
wait $pid 2>/dev/null
|
||||
ret=3 # means killed
|
||||
fi
|
||||
|
||||
return $ret
|
||||
}
|
||||
|
||||
# arg1: name of file with socket reply
|
||||
display_tls_serverhello() {
|
||||
# server hello:
|
||||
# byte 0: 0x16=TLS, 0x15= TLS alert
|
||||
# byte 1+2: 03, TLS version
|
||||
# byte 3+4: length all
|
||||
# byte 5: handshake type (2=hello) TLS alert: level (2=fatal), descr (0x28=handshake failure)
|
||||
# byte 6+7+8: length server hello
|
||||
# byte 9+10: 03, TLS version (00: SSLv3, 01: TLS 1.0, 02: TLS 1.1, 03: TLS 1.2)
|
||||
# byte 11-14: TLS timestamp
|
||||
# byte 15-42: random (28 bytes)
|
||||
# byte 43 : session id length
|
||||
# byte 44+45+sid-len: cipher suite!
|
||||
# byte 46+sid-len: compression method: 00: none, 01: deflate
|
||||
# byte 47+48+sid-len: extension length
|
||||
|
||||
tls_hello_ascii=`hexdump -v -e '16/1 "%02X"' $1`
|
||||
[[ "$DEBUG" -eq 5 ]] && echo $tls_hello_ascii # one line without any blanks
|
||||
[[ -z $tls_hello_ascii ]] && return 0 # no server hello received
|
||||
|
||||
# now scrape two bytes out of the reply per byte
|
||||
tls_hello_initbyte="${tls_hello_ascii:0:2}" # normally this is x16
|
||||
tls_hello_protocol="${tls_hello_ascii:2:4}"
|
||||
tls_len_all=`printf "%d\n" ${tls_hello_ascii:6:4}`
|
||||
|
||||
if [[ $tls_hello_initbyte != "16" ]] ; then
|
||||
[[ $DEBUG -ge 1 ]] && echo "tls_hello_initbyte: 0x$tls_hello_initbyte"
|
||||
if [[ $DEBUG -ge 2 ]]; then
|
||||
echo "tls_hello_protocol: 0x$tls_hello_protocol"
|
||||
echo "tls_len_all: $tls_len_all"
|
||||
echo "tls_err_level: ${tls_hello_ascii:10:2}"
|
||||
echo "tls_err_descr: 0x${tls_hello_ascii:12:2}"
|
||||
fi
|
||||
return 1
|
||||
fi
|
||||
|
||||
DETECTED_TLS_VERSION=$tls_hello_protocol
|
||||
|
||||
tls_hello="${tls_hello_ascii:10:2}" # normally this is x02
|
||||
tls_hello_protocol2="${tls_hello_ascii:18:4}"
|
||||
tls_hello_time="${tls_hello_ascii:22:8}"
|
||||
tls_time=`printf "%d\n" 0x$tls_hello_time`
|
||||
tls_time=`date --date="@$tls_time" "+%Y-%m-%d %r"`
|
||||
tls_sid_len=`printf "%d\n" 0x${tls_hello_ascii:86:2}`
|
||||
let sid_offset=88+$tls_sid_len*2
|
||||
tls_cipher_suite="${tls_hello_ascii:$sid_offset:4}"
|
||||
let sid_offset=92+$tls_sid_len*2
|
||||
tls_compression_method="${tls_hello_ascii:$sid_offset:2}"
|
||||
|
||||
if [[ $DEBUG -ge 2 ]]; then
|
||||
echo "tls_hello_initbyte: 0x$tls_hello_initbyte"
|
||||
echo "tls_hello: 0x$tls_hello"
|
||||
echo "tls_hello_protocol: 0x$tls_hello_protocol"
|
||||
echo "tls_hello_protocol2: 0x$tls_hello_protocol2"
|
||||
echo "tls_len_all: $tls_len_all"
|
||||
echo "tls_sid_len: $tls_sid_len"
|
||||
echo "tls_hello_time: 0x$tls_hello_time ($tls_time)"
|
||||
echo "tls_cipher_suite: 0x$tls_cipher_suite"
|
||||
echo "tls_compression_method: 0x$tls_compression_method"
|
||||
fi
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
|
||||
#### main
|
||||
|
||||
[[ -z "$1" ]] && help # hostname
|
||||
|
||||
parse_hn_port "$1"
|
||||
echo
|
||||
|
||||
for tls_low_byte in "00" "01" "02" "03"; do
|
||||
|
||||
if ! exec 5<> /dev/tcp/$NODE/$PORT; then
|
||||
echo "`basename $0`: unable to connect to $NODE:$PORT"
|
||||
exit 2
|
||||
fi
|
||||
|
||||
[[ "$DEBUG" -ge 1 ]] && printf "sending client hello...\n"
|
||||
if [[ "$tls_low_byte" == "03" ]] ; then
|
||||
socksend_clienthello $tls_low_byte "$TLS12_CIPHER" $SNIHEX
|
||||
else
|
||||
socksend_clienthello $tls_low_byte "$TLS_CIPHER" $SNIHEX
|
||||
fi
|
||||
|
||||
sockread_serverhello 32768 0
|
||||
[[ "$DEBUG" -ge 1 ]] && printf "reading server hello...\n"
|
||||
if [[ "$DEBUG" -eq 3 ]]; then
|
||||
#xxd -c$COL_WIDTH $SOCK_REPLY_FILE | head -3
|
||||
#hexdump -v -e '"%04_ax: " 32/1 "%02X " "\n"' $SOCK_REPLY_FILE | head -6
|
||||
hexdump -C $SOCK_REPLY_FILE | head -6
|
||||
echo
|
||||
fi
|
||||
|
||||
display_tls_serverhello "$SOCK_REPLY_FILE"
|
||||
ret=$?
|
||||
|
||||
# see https://secure.wand.net.nz/trac/libprotoident/wiki/SSL
|
||||
lines=`cat "$SOCK_REPLY_FILE" 2>/dev/null | hexdump -v -e '"%04_ax: " 32/1 "%02X " "\n"' | wc -l`
|
||||
|
||||
printf "Protokoll "; tput bold; printf "$tls_low_byte"; tput sgr0; printf ": "
|
||||
|
||||
if [[ $ret -eq 1 ]] || [[ $lines -eq 1 ]] ; then
|
||||
tput setaf 3; echo "NOT available"
|
||||
ret=1
|
||||
else
|
||||
if [[ 03$tls_low_byte -eq $DETECTED_TLS_VERSION ]]; then
|
||||
tput setaf 2; echo "available"
|
||||
ret=0
|
||||
else
|
||||
tput setaf 3; echo -n "NOT available "
|
||||
[[ $DEBUG -ge 1 ]] && echo -n "send: 0x03$tls_low_byte, returned: 0x$DETECTED_TLS_VERSION"
|
||||
echo
|
||||
fi
|
||||
fi
|
||||
tput sgr0
|
||||
|
||||
[[ "$DEBUG" -ge 2 ]] && printf " ($lines lines)" && echo
|
||||
echo
|
||||
|
||||
# closing fd:
|
||||
exec 5<&-
|
||||
exec 5>&-
|
||||
|
||||
rm $SOCK_REPLY_FILE
|
||||
|
||||
echo "--------------------------------------------"
|
||||
|
||||
done
|
||||
|
||||
|
||||
echo
|
||||
exit 0
|
||||
|
||||
# vim:tw=110:ts=5:sw=5
|
||||
# $Id: prototype.tls-protocol-checker.bash,v 1.8 2015/01/08 08:57:26 dirkw Exp $
|
||||
Loading…
Reference in New Issue
Block a user