Identifier / Programs / Linux and Unix

opkg

A lightweight package manager used to install OpenWrt packages. tldr-pages

GTFOBins shell 1 ATT&CK technique 1 documented command

How opkg is abused

documented by GTFOBins

shell T1059.004 Command and Scripting Interpreter: Unix Shell

install

Each abuse is GTFOBins's category and the options and words it uses; the full write-up is on GTFOBins's page for opkg.

1 documented command

from GTFOBins, each read by the identifier

shell with sudo

Generate the Debian package with fpm and upload it to the target.

echo 'exec /bin/sh' >x.sh
fpm -n x -s dir -t deb -a all --before-install x.sh .

rpm opkg install x_1.0_all.deb

Identify

The command the identifier reads trips no Sigma process-creation rule. This command is, with GTFOBins’ notes, from GTFOBins, at commit acd524623f9c of 2026-05-27, under the GPL-3.0, with no warranty. Changed: Markdown is shown formatted. The source is in lolbas-gtfobins-commands.json.gz, and the full entry is on GTFOBins’s page for opkg. The identifier reads the line that runs opkg.

What detects it

Sigma process creation rules

T1059.004Command and Scripting Interpreter: Unix Shell

Everyday use

from tldr-pages, CC BY 4.0

Install a package

opkg install packageIdentify

Matches GTFOBins abuse: shell

Remove a package

opkg remove packageIdentify

Update the list of available packages

opkg updateIdentify

Of the 3 examples the identifier reads, 1 matches GTFOBins abuse or trips a Sigma process-creation rule.

opkg

How opkg is abused

1 documented command

What detects it

Everyday use

Other programs abused for shell