#!/bin/bash
# Decrypt function
function decrypt {
MzSaas7k=$(echo $hash | sed 's/988sn1/83unasa/g')
Mzns7293sk=$(echo $MzSaas7k | sed 's/4d298d/9999/g')
MzSaas7k=$(echo $Mzns7293sk | sed 's/3i8dqos82/873h4d/g')
Mzns7293sk=$(echo $MzSaas7k | sed 's/4n9Ls/20X/g')
MzSaas7k=$(echo $Mzns7293sk | sed 's/912oijs01/i7gg/g')
Mzns7293sk=$(echo $MzSaas7k | sed 's/k32jx0aa/n391s/g')
MzSaas7k=$(echo $Mzns7293sk | sed 's/nI72n/YzF1/g')
Mzns7293sk=$(echo $MzSaas7k | sed 's/82ns71n/2d49/g')
MzSaas7k=$(echo $Mzns7293sk | sed 's/JGcms1a/zIm12/g')
Mzns7293sk=$(echo $MzSaas7k | sed 's/MS9/4SIs/g')
MzSaas7k=$(echo $Mzns7293sk | sed 's/Ymxj00Ims/Uso18/g')
Mzns7293sk=$(echo $MzSaas7k | sed 's/sSi8Lm/Mit/g')
MzSaas7k=$(echo $Mzns7293sk | sed 's/9su2n/43n92ka/g')
Mzns7293sk=$(echo $MzSaas7k | sed 's/ggf3iunds/dn3i8/g')
MzSaas7k=$(echo $Mzns7293sk | sed 's/uBz/TT0K/g')
flag=$(echo $MzSaas7k | base64 -d | openssl enc -aes-128-cbc -a -d -salt -pass pass:$salt)
}
# Variables
var="9M"
salt=""
hash="VTJGc2RHVmtYMTl2ZnYyNTdUeERVRnBtQWVGNmFWWVUySG1wTXNmRi9rQT0K"
# Base64 Encoding Example:
# $ echo "Some Text" | base64
for i in {1..28}
do
var=$(echo $var | base64)
if [[ $i == 28 ]]
then
salt=$(echo $var | wc -c)
fi
done
# Check if $salt is empty
if [[ ! -z "$salt" ]]
then
decrypt
echo $flag
else
exit 1
fi
error:*** WARNING : deprecated key derivation used.
Using -iter or -pbkdf2 would be better.
bad decrypt
140546881238400:error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt:../crypto/evp/evp_enc.c:610:
the exercise: Create a "For" loop that encodes the variable "var" 28 times in "base64". The number of characters in the 28th hash is the value that must be assigned to the "salt" variable.
code made by me :
for i in {1..28}
do
var=$(echo $var | base64)
if [[ $i == 28 ]]
then
salt=$(echo $var | wc -c)
fi
done
Here is the solution in case you are stuck. Make sure to delete “salt” in the #Variables tab. We will set the salt in the loop.
#Variables
var="9M"
hash="VTJGc2RHVmtYMTl2ZnYyNTdUeERVRnBtQWVGNmFWWVUySG1wTXNmRi9rQT0K"
# Base64 Encoding Example:
# $ echo "Some Text" | base64
# <- For-Loop here
for ((i = 0 ; i < 28 ; i++)); do
echo "Try number $i"
var=$(echo $var | base64)
echo $var | wc -c
salt=$(echo $var | wc -c)
done
It should be right, but I had to make a workaround too.
This might do the trick:
salt=$((${#var}+1))
# ${#var} counts the length and you have to add 1 to make the exercise work.
This way it'll still show you the warning, but if you copy the last line, that'll be your answer.
Related
I'm trying to find all words in a file that don't exist in the dictionary. If I look for a single word the following works
b=ther; look $b | grep -i "^$b$" | ifne -n echo $b => ther
b=there; look $b | grep -i "^$b$" | ifne -n echo $b => [no output]
However if I try to run a "while read" loop
while read a; do look $a | grep -i "^$a$" | ifne -n echo "$a"; done < <(tr -s '[[:punct:][:space:]]' '\n' <lotr.txt |tr '[:upper:]' '[:lower:]')
The output seems to contain all (?) words in the file. Why doesn't this loop only output non-dictionary words?
Regarding ifne
If stdin is non-empty, ifne -n reprints stdin to stdout. From the manpage:
-n Reverse operation. Run the command if the standard input is empty
Note that if the standard input is not empty, it is passed through
ifne in this case.
strace on ifne confirms this behavior.
Alternative
Perhaps, as an alternative:
1 #!/bin/bash -e
2
3 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
4
5 while read a; do
6 look "$a" | grep -qi "^$a$" || echo "$a"
7 done < <(
8 tr -s '[[:punct:][:space:]]' '\n' < lotr.txt \
9 | tr '[A-Z]' '[a-z]' \
10 | sort -u \
11 | grep .
12 )
I have several config files with around 20k lines each and I need to get some values from them.
I know that each of the values I need starts with a specific word "CONFNET" so I tried to get the values with a while loop, which reads every line.
But unfortunately this is extremely inefficient and slow.
Is there a better solution to this?
for filename in ~/configs/*; do
ip=$(cat $filename | strings | grep -i -A 7 "addnet_outside" | head -7 | grep "IP" | sed "s/IP//" | sed "s/=//" | sed -e 's/^[ \t]*//')
hostname=$(cat $filename | strings | grep -a "Inst:" | head -1 | sed "s/Inst://" | sed -e 's/^[ \t]*//')
while IFS= read -r line; do
object_name=$(echo $line | strings | grep "CONFNET" | sed "s/CONFNET//" | awk '{print $1}')
object_value=$(echo $line | strings | grep "CONFNET" | sed "s/CONFNET//" | awk '{print $3}' | sed -e 's/^[ \t]*//')
if [ ! -z $object_name ] && [ ! -z $object_value ]
then
echo $hostname "->" $object_name ":" $object_value
done < "$filename"
done
I need some help . I want the result will be
UP:N%:N%
but the current result is
UP:N%
:N%
this is the code.
#!/bin/bash
UP=$(pgrep mysql | wc -l);
if [ "$UP" -ne 1 ];
then
echo -n "DOWN"
else
echo -n "UP:"
fi
df -hl | grep 'sda1' | awk ' {percent+=$5;} END{print percent"%"}'| column -t && echo -n ":"
top -bn2 | grep "Cpu(s)" | \sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | \awk 'END{print 100 - $1"%"}'
You can use command substitution in your first sentence (notice you're creating a subshell in this way):
echo -n $(df -hl | grep 'sda1' | awk ' {percent+=$5;} END{print percent"%"}'| column -t ):
I am confused with this make.sh file. I read previous posts about shell scripts structure but I could not find out about this file. what is the function of this file? ....
Can anyone explain it step by step?
#!/bin/sh
rm out/*
example_number=0
for name in `ls in`
do
out=`cat in/$name | grep ".o " | tr -s \ | cut -d\ -f2`
inp=`cat in/$name | grep ".i " | tr -s \ | cut -d\ -f2`
echo -n "${name} (i=${inp}, o=${out}) "
if [ $inp -le 12 ]
then
cat in/$name \
| sed '/.i/d' \
| sed '/.o/d' \
| sed '/.p/d' \
| sed '/.e/d' \
| sed 's/|/ /g' \
| tr -s \ \
| sed 's/^[ \t]*//;s/[ \t]*$//' \
> out/${name}.in
tst=`cat out/${name}.in | cut -d\ -f2 | grep - -c`
if [ $tst -ne 0 ]
then
echo "remove file"
rm out/${name}.in
else
echo processing...
./unix2dos.exe -q out/${name}.in
example_number=`expr $example_number + 1`
fi
else
echo " skip"
fi
done
for name in `grep 2 -l out/*`
do
echo Remove $name
rm $name
example_number=`expr $example_number - 1`
done
echo Number of examples is $example_number
# bad files
# apla ( 222? )
# tms
# mainpa...
It is not a Makefile, but a shell script. You can see this from the file extension .sh and from the header
#!/bin/sh
Which is the instruction to use the shell to execute this file.
Short and direct, basically I want to use the value of $command on a variable, instead using it inside the while loop as a command itself. So:
This Works, but I think it's ugly:
#!/bin/bash
IFS=$'\n'
lsof=`which lsof`
whoami=`whoami`
while true ; do
execution_array=($(${lsof} -iTCP -P 2> /dev/null | grep ':' | grep ${whoami} | awk '{print $9}' | cut -f2 -d'>' | sort | uniq ))
for i in ${execution_array[*]}; do
echo $i
done
sleep 1
done
unset IFS
This doesn't work ( no output happens ), but i think is less ugly:
#!/bin/bash
IFS=$'\n'
lsof=`which lsof`
whoami=`whoami`
command="${lsof} -iTCP -P 2> /dev/null | grep ':' | grep ${whoami} | awk '{print $9}' | cut -f2 -d'>' | sort | uniq"
while true ; do
execution_array=($(command))
for i in ${execution_array[*]}; do
echo $i
done
sleep 1
done
unset IFS
This solved my problem:
#!/bin/bash
IFS=$'\n'
lsof=$(which lsof)
list_connections() {
${lsof} -iTCP -P 2> /dev/null | grep ':' | grep $(whoami) | awk '{print $9}' | cut -f2 -d'>' | sort | uniq
}
while true ; do
execution_array=($(list_connections))
for i in ${execution_array[*]}; do
echo $i
done
sleep 1
done
unset IFS