Run binary from inside bash file/Downloading and executing binary

herohamp

Is it possible for me to package a binary inside of a bash file and then execute it? I know this seems like an odd request but is it possible. I know this seems like an odd request but I am working with a Write Protected disk so I can't save any files to. Currently, to run bash files I have to do something like

curl -s http://192.168.1.235/test.txt | bash

Or does anyone know a way to download an execute a binary as this is all the pre installed binarys I have to work with

cksum      head       less       md5sum     nslookup   sha1sum    sha256sum  sha512sum  sum        tail
ld-2.17.so              libcurl.so.4            libnss_compat-2.17.so   libnss_dns.so.2         libnss_nis-2.17.so      libresolv.so.2          libz.so.1.2.8
ld-linux-armhf.so.3     libcurl.so.4.2.0        libnss_compat.so.2      libnss_files-2.17.so    libnss_nis.so.2         libssh2.so.1
libc-2.17.so            libdl-2.17.so           libnss_db-2.17.so       libnss_files.so.2       libnss_nisplus-2.17.so  libssh2.so.1.0.1
libc.so.6               libdl.so.2              libnss_db.so.2          libnss_hesiod-2.17.so   libnss_nisplus.so.2     libssl.so.1.0.0
libcrypto.so.1.0.0      libgcc_s.so.1           libnss_dns-2.17.so      libnss_hesiod.so.2      libresolv-2.17.so       libz.so.1
ash      bash     busybox  catv     curl     date     egrep    fgrep    grep     gunzip   gzip     ls       pwd      sh       tar      zcat

My website hamptonmoore.com
UMass Amherst All Campus Makerspace
Supporting the wife's SEO
Click for a Scratch based programming language I made

Wettining

 wget -O -[download-link].sh | bash

maybe, I don't fully understand what your saying

Last edited by Wettining (July 21, 2017 04:16:58)

Done with Scratch but want a little more? Try GP…
View all my posts:
1GErVELk2hM2WBK3TawRLR7AkV7SxyBSK6

herohamp

Wettining wrote:
 wget -O -[download-link].sh | bash 
maybe, I don't fully understand what your saying

Thats like 50% as I want to be able to include a binary like say “date” with the bash file and execute it

My website hamptonmoore.com
UMass Amherst All Campus Makerspace
Supporting the wife's SEO
Click for a Scratch based programming language I made

MegaApuTurkUltra

busybox mount -t whatever \\\\my-awesome-nas\\someplace /mnt/my-awesome-writable-filesystem

Or if you have root remount whatever you're on as rw

Last edited by MegaApuTurkUltra (July 21, 2017 14:35:59)

$(".box-head")[0].textContent = "committing AT crimes since $whenever"

bobbybee

curl https://totally.legit/binary > binary
chmod +x binary
./binary
rm binary

Although I guarentee if you do that without a good reason, your security-aware userbase won't touch that script with a 10 foot pole.

“Ooo, can I call you Señorita Bee?” ~Chibi-Matoran

CatIsFluffy

bobbybee wrote:
>

Please read this part of the OP:

herohamp wrote:
I know this seems like an odd request but I am working with a Write Protected disk so I can't save any files to.

nanalan

$ /lib/ld-linux.so.2 <(curl thing)

some
BODY
once told me

DatOneLefty

sudo mkdir -p /media/tRAM
sudo mount -t tmpfs -o size=64M tmpfs /media/tRAM
cd /media/tRAM
wget https://totally.not/shady.binary
chmod +x shady.binary
./shady.binary
cd ~
sudo umount /media/tRAM

completely untested and my not work

Scratch data available at ScratchDB (Status)

Posts: bf97b44a7fbd33db070f6ade2b7dc549 (btw i use arch)

MegaApuTurkUltra

^ I think you meant busybox mount, busybox wget, busybox chmod, busybox umount.
Also mkdir would fail

Edit: nanalan's answer will not work either

Last edited by MegaApuTurkUltra (July 21, 2017 16:07:38)

$(".box-head")[0].textContent = "committing AT crimes since $whenever"

Wettining

herohamp wrote:
Wettining wrote:
 wget -O -[download-link].sh | bash 
maybe, I don't fully understand what your saying
Thats like 50% as I want to be able to include a binary like say “date” with the bash file and execute it

 wget -O -[download-link].sh | bash | echo date

Last edited by Wettining (July 21, 2017 17:57:59)

Done with Scratch but want a little more? Try GP…
View all my posts:
1GErVELk2hM2WBK3TawRLR7AkV7SxyBSK6

gtoal

herohamp wrote:
Is it possible for me to package a binary inside of a bash file and then execute it? I know this seems like an odd request but is it possible. I know this seems like an odd request but I am working with a Write Protected disk so I can't save any files to. Currently, to run bash files I have to do something like
curl -s http://192.168.1.235/test.txt | bash
Or does anyone know a way to download an execute a binary as this is all the pre installed binarys I have to work with

Is there a writable area, eg /tmp? You can embed a binary in your shell file (eg uuencoded) and save it out to /tmp to be executed.

Last edited by gtoal (July 21, 2017 22:52:51)

Jonathan50

Are you sure it's a binary? Binaries don't have txt extension. Maybe you need to xxd -r?

Edit: Whoops, nevermind

Last edited by Jonathan50 (July 21, 2017 23:21:01)

Not yet a Knight of the Mu Calculus.

Jonathan50

MegaApuTurkUltra wrote:
busybox mount -t whatever \\\\my-awesome-nas\\someplace /mnt/my-awesome-writable-filesystem
Or if you have root remount whatever you're on as rw

The node you mount the filesystem on has to exist, so that won't work unless you already have a directory at /mnt/my-awesome-writable-filesystem.

Not yet a Knight of the Mu Calculus.

herohamp

MegaApuTurkUltra wrote:
busybox mount -t whatever \\\\my-awesome-nas\\someplace /mnt/my-awesome-writable-filesystem
Or if you have root remount whatever you're on as rw

/ $ busybox mount -t whatever \\ubuntu\herohamp /mnt/my-awesome-writable-filesystem
mount: applet not found

My website hamptonmoore.com
UMass Amherst All Campus Makerspace
Supporting the wife's SEO
Click for a Scratch based programming language I made

Jonathan50

You've got a busybox binary built without mount. Do you have /tmp? What are you trying to do?

Last edited by Jonathan50 (July 22, 2017 00:46:12)

Not yet a Knight of the Mu Calculus.

herohamp

Jonathan50 wrote:
You've got a busybox binary built without mount. Do you have /tmp? What are you trying to do?

I have /tmp but can't write to it. I'm trying to put binaries on a USB drives to run on my router.

My website hamptonmoore.com
UMass Amherst All Campus Makerspace
Supporting the wife's SEO
Click for a Scratch based programming language I made

Jonathan50

Why can't you put the binaries on the USB drive?

Not yet a Knight of the Mu Calculus.

herohamp

Jonathan50 wrote:
Why can't you put the binaries on the USB drive?

I can but I can't mount the drive, so I need to send it binaries to mount the USB drive. Right?

My website hamptonmoore.com
UMass Amherst All Campus Makerspace
Supporting the wife's SEO
Click for a Scratch based programming language I made

Jonathan50

herohamp wrote:
I can but I can't mount the drive, so I need to send it binaries to mount the USB drive. Right?

Oh, sorry! xD You can't pass parameters to the kernel can't you? Is it on a ROM or a R/W storage device that's just mounted as read-only?

Last edited by Jonathan50 (July 22, 2017 00:57:07)

Not yet a Knight of the Mu Calculus.

herohamp

Jonathan50 wrote:
herohamp wrote:
I can but I can't mount the drive, so I need to send it binaries to mount the USB drive. Right?
Oh, sorry! xD You can't pass parameters to the kernel can't you? Is it on a ROM or a R/W storage device that's just mounted as read-only?

I can verify its R/W mounted as read-only because the router edits files. Infact I was able to add Hello to the bottom of a config file by adding \nHello. via the api

https://images.discordapp.net/attachments/335101418560028673/337927376514056193/unknown.png

Last edited by herohamp (July 22, 2017 01:00:23)

My website hamptonmoore.com
UMass Amherst All Campus Makerspace
Supporting the wife's SEO
Click for a Scratch based programming language I made

Discuss Scratch