Bunny_helper.sh Problems

[RazerBlade]

Hello Everyone!

I have a problem with my Bash Bunny where bunny_helper.sh doesent function so I have to always specify the switch when running an attack, for instance Usb_exfiltrator. I use the latest version from github but it still doesent functiion properly. Please help.

[GermanNoob]

Hmm, have you tried to use a short test script? I wrote this one and it works fine for me:

LED R G B

source bunny_helpers.sh

echo $SWITCH_POSITION >> /root/loot/switch.txt

sync

LED G

 

[RazerBlade]

I ran the script and it just outputed a blank txt file. So no luck I guess. I hope darrren can take a look into this problem.

[GermanNoob]

@RazerBlade

Instead of waiting for others, why don't you evaluate / debug by yourself? just insert some echo "whatever" >> whatever-file within the bunny_helpers.sh to get an idea why it isn't working... With more information people might be able to help you.

[MrSnowMonster]

You could always copy this inside your payload:

 

check_switch() {
	switch1=`cat /sys/class/gpio_sw/PA8/data`
	switch2=`cat /sys/class/gpio_sw/PL4/data`
	switch3=`cat /sys/class/gpio_sw/PL3/data`
	if [ "x$switch1" = "x0" ] && [ "x$switch2" = "x1" ] && [ "x$switch3" = "x1" ]; then
		SWITCH_POSITION="switch1"
	elif [ "x$switch1" = "x1" ] && [ "x$switch2" = "x0" ] && [ "x$switch3" = "x1" ]; then
		SWITCH_POSITION="switch2"
	elif [ "x$switch1" = "x1" ] && [ "x$switch2" = "x1" ] && [ "x$switch3" = "x0" ]; then
		SWITCH_POSITION="switch3"
	else
		SWITCH_POSITION="invalid"
	fi
}

check_switch

This is basicly what the bunny helper does. If this doesnt work, then something is wrong with your bashbunny...

[RazerBlade]

I ran source bunny_helpers.sh via serial and it outputs this:

root@bunny:~/udisk/payloads/library# source bunny_helpers.sh
-bash: $'\r': command not found
: No such file or directoryases
-bash: command substitution: line 19: syntax error near unexpected token `|'
-bash: command substitution: line 19: `         | sort | uniq | tail -n1 | sed "s/^[ \t]*//" | sed 's/\"//g' | sed 's/;//''
-bash: $'\r': command not found
-bash: $'\r': command not found
-bash: bunny_helpers.sh: line 25: syntax error near unexpected token `$'{\r''
'bash: bunny_helpers.sh: line 25: `check_switch() {

 

If i run:

cat /sys/class/gpio_sw/PA8/data
cat /sys/class/gpio_sw/PL4/data
cat /sys/class/gpio_sw/PL3/data

It outputs the correct data and if I remove the check switch bracket in the beginning of bunny_helpers so the script looks like this:

#check_switch() {
        switch1=`cat /sys/class/gpio_sw/PA8/data`
        switch2=`cat /sys/class/gpio_sw/PL4/data`
        switch3=`cat /sys/class/gpio_sw/PL3/data`
        echo "--- switch1 = $switch1, switch2 = $switch2, switch3 = $switch3"
        if [ "x$switch1" = "x0" ] && [ "x$switch2" = "x1" ] && [ "x$switch3" = $
                SWITCH_POSITION="switch1"
        elif [ "x$switch1" = "x1" ] && [ "x$switch2" = "x0" ] && [ "x$switch3" $
                SWITCH_POSITION="switch2"
        elif [ "x$switch1" = "x1" ] && [ "x$switch2" = "x1" ] && [ "x$switch3" $
                SWITCH_POSITION="switch3"
        else
                SWITCH_POSITION="invalid"
        fi
#}

Then the script just spews out problems

-bash: $'\r': command not found
: No such file or directoryases
-bash: command substitution: line 19: syntax error near unexpected token `|'
-bash: command substitution: line 19: `         | sort | uniq | tail -n1 | sed "s/^[ \t]*//" | sed 's/\"//g' | sed 's/;//''
-bash: $'\r': command not found
-bash: $'\r': command not found
, switch3 = 0 1
-bash: apa.sh: line 32: syntax error near unexpected token `elif'
'bash: apa.sh: line 32: `       elif [ "x$switch1" = "x1" ] && [ "x$switch2" = "x0" ] && [ "x$switch3" = "x1" ]; then

I really don't know what to do I expect Darren to look into this issue ASAP
 

[RazerBlade]

Found the problem. Bunny_helpers.sh was encoded as DOS line ending and not unix format. Problem solved!