CorrectHorseBatteryStaple

correcthorsebatterystaple.txt

# Create xkcd hash
    echo -n "CorrectHorseBatteryStaple" | md5sum | awk '{ print $1 }' > md5.hash
    cat md5.hash
    f6f9b174745fa4651f750c36957d674c

# Get 20k wordlist (containing all 4 words)
    wget https://raw.githubusercontent.com/first20hours/google-10000-english/master/20k.txt

# Pick 2k top words to speed up attack:
    head -2000 20k.txt > 2k.txt
    grep correct 2k.txt
    correct
    grep horse 2k.txt
    horse
    grep battery 2k.txt
    battery
    grep staple 2k.txt

# Add the missing word so this will work
    echo staple >> 2k.txt

# Capitalize words
    cat 2k.txt | hashcat --stdout -j c > capitalized_2k.txt

# Double words
    hashcat -a 1 --stdout capitalized_2k.txt capitalized_2k.txt > double.txt
    ls -lh double.txt
    -rw-r--r-- 1 albert albert 49M Jul  7 15:21 double.txt

# Crack it with hashcat
    hashcat -O --potfile-path hc.pot -m 0 md5.hash -a 1 double.txt double.txt

p
...
Time.Estimated...: Tue Jul  7 19:17:29 2020 (*3 hours, 53 mins*)
Speed.#1.........:  1142.8 MH/s (13.52ms)

Hmm, markdown didn't work. Let's see if it works in the comments.

Create xkcd hash

echo -n "CorrectHorseBatteryStaple" | md5sum | awk '{ print $1 }' > md5.hash
cat md5.hash
f6f9b174745fa4651f750c36957d674c

Get 20k wordlist (containing all 4 words)

wget https://raw.githubusercontent.com/first20hours/google-10000-english/master/20k.txt

Pick 2k top words to speed up attack:

head -2000 20k.txt > 2k.txt
grep correct 2k.txt
correct
grep horse 2k.txt
horse
grep battery 2k.txt
battery
grep staple 2k.txt

Add the missing word so this will work

echo staple >> 2k.txt

Capitalize words

cat 2k.txt | hashcat --stdout -j c > capitalized_2k.txt

Double words

hashcat -a 1 --stdout capitalized_2k.txt capitalized_2k.txt > double.txt
ls -lh double.txt
-rw-r--r-- 1 albert albert 49M Jul  7 15:21 double.txt

Crack it with hashcat

hashcat -O --potfile-path hc.pot -m 0 md5.hash -a 1 double.txt double.txt

p
...
Time.Estimated...: Tue Jul 7 19:17:29 2020 (3 hours, 53 mins)
Speed.#1.........: 1142.8 MH/s (13.52ms)