mirror of
https://github.com/drwetter/testssl.sh.git
synced 2025-11-03 23:35:26 +01:00
finalized work on integrating my f5 cookie decoder
see https://github.com/drwetter/F5-BIGIP-Decoder
This commit is contained in:
Dirk
199
testssl.sh
199
testssl.sh
@@ -545,6 +545,7 @@ pr_boldurl() { tm_bold "$1"; html_out "<a href="$1" style=\"font-weight:bold;col
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### color switcher (see e.g. https://linuxtidbits.wordpress.com/2008/08/11/output-color-on-bash-scripts/
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### http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x405.html
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### no ouput support for HTML!
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set_color_functions() {
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local ncurses_tput=true
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@@ -602,6 +603,8 @@ set_color_functions() {
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reverse=$(tput mr)
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off=$(tput me)
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fi
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# italic doesn't work under Linux, FreeBSD (9). But both work under OpenBSD.
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# alternatively we could use escape codes
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fi
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}
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@@ -1088,6 +1091,52 @@ is_ipv6addr() {
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return 0
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}
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# now some function for the integrated BIGIP F5 Cookie detector (see https://github.com/drwetter/F5-BIGIP-Decoder)
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f5_hex2ip() {
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debugme echo "$1"
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echo $((16#${1:0:2})).$((16#${1:2:2})).$((16#${1:4:2})).$((16#${1:6:2}))
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}
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f5_hex2ip6() {
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debugme echo "$1"
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echo "[${1:0:4}:${1:4:4}:${1:8:4}:${1:12:4}.${1:16:4}:${1:20:4}:${1:24:4}:${1:28:4}]"
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}
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f5_determine_routeddomain() {
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local tmp
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tmp="${1%%o*}"
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echo "${tmp/rd/}"
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}
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f5_ip_oldstyle() {
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local tmp
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local a b c d
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tmp="${1/%.*}" # until first dot
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tmp="$(printf "%x8" "$tmp")" # convert the whole thing to hex, now back to ip (reversed notation:
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tmp="$(f5_hex2ip $tmp)" # transform to ip with reversed notation
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IFS="." read -r a b c d <<< "$tmp" # reverse it
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echo $d.$c.$b.$a
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}
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f5_port_decode() {
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local tmp
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tmp="$(strip_lf "$1")" # remove lf if there is one
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tmp="${tmp/.0000/}" # to be sure remove trailing zeros with a dot
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tmp="${tmp#*.}" # get the port
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tmp="$(printf "%04x" "${tmp}")" # to hex
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if [[ ${#tmp} -eq 4 ]]; then
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:
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elif [[ ${#tmp} -eq 3 ]]; then # fill it up with leading zeros if needed
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tmp=0{$tmp}
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elif [[ ${#tmp} -eq 2 ]]; then
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tmp=00{$tmp}
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fi
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echo $((16#${tmp:2:2}${tmp:0:2})) # reverse order and convert it from hex to dec
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}
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###### END helper function definitions ######
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@@ -1503,9 +1552,9 @@ detect_ipv4() {
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else
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first=false
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fi
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pr_svrty_high "$result"
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pr_svrty_medium "$result"
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outln "\n$spaces$your_ip_msg"
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fileout "ip_in_header_$count" "HIGH" "IPv4 address in header $result $your_ip_msg"
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fileout "ip_in_header_$count" "MEDIUM" "IPv4 address in header $result $your_ip_msg"
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fi
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count=$count+1
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done < $HEADERFILE
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@@ -2086,133 +2135,54 @@ run_application_banner() {
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# arg1: IP:port, arg2: what kind of cookie, arg3: cookiename or whole line
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output() {
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printf "%-48s %-38s %-0s%-0s\n" " $1" "| $2" "| ${3}=" "$4"
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}
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# first some conversion functions, see
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# description: https://github.com/dnkolegov/bigipsecurity
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# meta code: https://support.f5.com/csp/article/K6917
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# code: https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/f5_bigip_cookie_disclosure.rb
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# code: http://penturalabs.wordpress.com/2011/03/29/how-to-decode-big-ip-f5-persistence-cookie-values/
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hex2ip() {
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debugme echo "$1"
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echo $((16#${1:0:2})).$((16#${1:2:2})).$((16#${1:4:2})).$((16#${1:6:2}))
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}
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hex2ip6() {
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debugme echo "$1"
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echo "[${1:0:4}:${1:4:4}:${1:8:4}:${1:12:4}.${1:16:4}:${1:20:4}:${1:24:4}:${1:28:4}]"
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}
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determine_routeddomain() {
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local tmp
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tmp="${1%%o*}"
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echo "${tmp/rd/}"
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}
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ip_oldstyle() {
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local tmp
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local a b c d
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tmp="${1/%.*}" # until first dot
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tmp="$(printf "%x8" "$tmp")" # convert the whole thing to hex, now back to ip (reversed notation:
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tmp="$(hex2ip $tmp)" # transform to ip with reversed notation
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IFS="." read -r a b c d <<< "$tmp" # reverse it
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echo $d.$c.$b.$a
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}
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port_decode() {
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local tmp
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tmp="${1/.0000/}" # to be sure remove trailing zeros with a dot
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tmp="${tmp#*.}" # get the port
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tmp="$(printf "%04x" "${tmp}")" # to hex
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if [ ${#tmp} -eq 4 ] ; then
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:
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elif [ ${#tmp} -eq 3 ]; then # fill it up with leading zeros if needed
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tmp=0{$tmp}
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elif [ ${#tmp} -eq 2 ]; then
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tmp=00{$tmp}
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fi
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echo $((16#${tmp:2:2}${tmp:0:2})) # reverse order and convert it from hex to dec
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}
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# arg1: multiline string w cookies
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bigip_check() {
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f5_bigip_check() {
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local allcookies="$1"
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local ip port cookievalue cookiename
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local routed_domain offset
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local savedcookies=""
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local i=0
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local spaces="$2"
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# taken from https://github.com/drwetter/F5-BIGIP-Decoder, more details see there
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debugme echo -e "all cookies: >> $allcookies <<\n"
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# first non-default routed domains --> routed domains
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while true; do IFS='=' read cookiename cookievalue
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[[ -z "$cookievalue" ]] && break
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cookievalue=${cookievalue/;/}
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debugme echo $cookiename : $cookievalue
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grep -q -E '[0-9]{9,10}\.[0-9]{3,5}\.0000' <<< "$cookievalue" && \
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ip="$(ip_oldstyle "$cookievalue")" && \
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port="$(port_decode $cookievalue)" && \
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output "${ip}:${port}" "default IPv4 pool members" "$cookiename" "$cookievalue" && \
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savedcookies="${savedcookies} ${cookiename}=${cookievalue}\n" && \
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i=$((i +1)) && \
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continue
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grep -q -E '^rd[0-9]{1,2}o0{20}f{4}[a-f0-9]{8}o[0-9]{1,5}' <<< "$cookievalue" && \
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routed_domain="$(determine_routeddomain "$cookievalue")" && \
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offset=$(( 2 + ${#routed_domain} + 1 + 24)) && \
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port="${cookievalue##*o}" && \
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ip="$(hex2ip "${cookievalue:$offset:8}")" && \
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output "${ip}:${port}" "IPv4 pool members in routed domains" "$cookiename" "$cookievalue" && \
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savedcookies="${savedcookies} ${cookiename}=${cookievalue}\n" && \
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i=$((i +1)) && \
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continue
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grep -q -E '^vi[a-f0-9]{32}\.[0-9]{1,5}' <<< "$cookievalue" && \
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ip="$(hex2ip6 ${cookievalue:2:32})" && \
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port="${cookievalue##*.}" && \
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port=$(port_decode "$port") && \
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output "${ip}:${port}" "IPv6 pool members" "$cookiename" "$cookievalue" && \
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savedcookies="${savedcookies} ${cookiename}=${cookievalue}\n" && \
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i=$((i +1)) && \
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continue
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grep -q -E '^rd[0-9]{1,2}o[a-f0-9]{32}o[0-9]{1,5}' <<< "$cookievalue" && \
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routed_domain="$(determine_routeddomain "$cookievalue")" && \
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offset=$(( 2 + ${#routed_domain} + 1 )) && \
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port="${cookievalue##*o}" && \
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ip="$(hex2ip6 ${cookievalue:$offset:32})" && \
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output "${ip}:${port}" "IPv6 pool members in routed domains" "$cookiename" "$cookievalue" && \
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savedcookies="${savedcookies} ${cookiename}=${cookievalue}\n" && \
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i=$((i +1)) && \
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continue
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grep -q -E '^\!.*=$' <<< "$cookievalue" && \
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if grep -q -E '[0-9]{9,10}\.[0-9]{3,5}\.0000' <<< "$cookievalue"; then
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ip="$(f5_ip_oldstyle "$cookievalue")"
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port="$(f5_port_decode $cookievalue)"
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out "${spaces}F5 cookie (default IPv4 pool member): "; pr_italic "$cookiename "; prln_svrty_medium "${ip}:${port}"
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fileout "cookie_bigip_f5" "MEDIUM" "Information leakage: F5 cookie $cookiename $cookievalue is default IPv4 pool member ${ip}:${port}"
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elif grep -q -E '^rd[0-9]{1,2}o0{20}f{4}[a-f0-9]{8}o[0-9]{1,5}' <<< "$cookievalue"; then
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routed_domain="$(f5_determine_routeddomain "$cookievalue")"
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offset=$(( 2 + ${#routed_domain} + 1 + 24))
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port="${cookievalue##*o}"
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ip="$(f5_hex2ip "${cookievalue:$offset:8}")"
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out "${spaces}F5 cookie (IPv4 pool in routed domain "; pr_svrty_medium "$routed_domain"; out "): "; pr_italic "$cookiename "; prln_svrty_medium "${ip}:${port}"
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fileout "cookie_bigip_f5" "MEDIUM" "Information leakage: F5 cookie $cookiename $cookievalue is IPv4 pool member in routed domain $routed_domain ${ip}:${port}"
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elif grep -q -E '^vi[a-f0-9]{32}\.[0-9]{1,5}' <<< "$cookievalue"; then
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ip="$(f5_hex2ip6 ${cookievalue:2:32})"
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port="${cookievalue##*.}"
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port=$(f5_port_decode "$port")
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out "${spaces}F5 cookie (default IPv6 pool member): "; pr_italic "$cookiename "; prln_svrty_medium "${ip}:${port}"
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fileout "cookie_bigip_f5" "MEDIUM" "Information leakage: F5 cookie $cookiename $cookievalue is default IPv6 pool member ${ip}:${port}"
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elif grep -q -E '^rd[0-9]{1,2}o[a-f0-9]{32}o[0-9]{1,5}' <<< "$cookievalue"; then
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routed_domain="$(f5_determine_routeddomain "$cookievalue")"
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offset=$(( 2 + ${#routed_domain} + 1 ))
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port="${cookievalue##*o}"
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ip="$(f5_hex2ip6 ${cookievalue:$offset:32})"
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out "${spaces}F5 cookie (IPv6 pool in routed domain "; pr_svrty_medium "$routed_domain"; out "): "; pr_italic "$cookiename "; prln_svrty_medium "${ip}:${port}"
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fileout "cookie_bigip_f5" "MEDIUM" "Information leakage: F5 cookie $cookiename $cookievalue is IPv6 pool member in routed domain $routed_domain ${ip}:${port}"
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elif grep -q -E '^\!.*=$' <<< "$cookievalue"; then
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if [[ "${#cookievalue}" -eq 81 ]] ; then
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savedcookies="${savedcookies} ${cookiename}=${cookievalue:1:79}"
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i=$((i +1))
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out "${spaces}Encrypted F5 cookie named "; pr_italic "${cookiename}"; outln " detected"
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fileout "cookie_bigip_f5" "INFO" "encrypted F5 cookie named ${cookiename} detected"
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fi
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fi
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continue
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done <<< "$allcookies"
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if [[ $DEBUG -ge 2 ]]; then
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echo "${i}x BIG IP cookie found"
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[[ $i -ne 0 ]] && echo -e "$savedcookies"
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fi
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### bottom line output
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nr_cookies=$(count_lines "$1")
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named_bigip=$(grep -ci 'BIGipServer' <<< "$allcookies")
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if [ -n $named_bigip ] ; then
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echo
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echo "In total:"
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echo "$nr_cookies cookies -- $((i)) F5 BIG IP cookie(s) of which $named_bigip cookie(s) named \"BIGipServer\""
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echo
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fi
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}
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@@ -2221,6 +2191,7 @@ run_cookie_flags() { # ARG1: Path
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local -i nr_httponly nr_secure
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local negative_word
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local msg302="" msg302_=""
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local spaces=" "
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if [[ ! -s $HEADERFILE ]]; then
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run_http_header "$1" || return 3
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@@ -2274,7 +2245,7 @@ run_cookie_flags() { # ARG1: Path
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fi
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outln "$msg302"
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allcookies="$(awk '/[Ss][Ee][Tt]-[Cc][Oo][Oo][Kk][Ii][Ee]:/ { print $2 }' "$TMPFILE")"
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bigip_check "$allcookies"
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f5_bigip_check "$allcookies" "$spaces"
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fi
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tmpfile_handle $FUNCNAME.txt
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