Big Zip

wget https://artifacts.picoctf.net/c/503/big-zip-files.zip

unzip big-zip-files.zip

rm big-zip-files.zip

Unlike First Find this is a much bigger folder so it is not as feasible to just look through the files. Using grep is kind of a must with this one.

Although, grep -R pico, once again provided the flag.

I used this command to get just the flag itself:

grep -R pico | grep -oE picoCTF{.*} --color=none

Here are some other ways you can acheive the same thing but with a different method:

• grep -R pico | rev | cut -d " " -f1 | rev
• grep -R pico | grep -oE '[^ ]+$' --color=none
• grep -R pico | sed 's/.* //g'
• grep -R pico | awk 'NF>1{print $NF}'

Flag: picoCTF{gr3p_15_m4g1c_ef87...}