Taking a look at the cat’s confession, these keystrokes appear to be Vim commands.

gg07lDjp0lDjp04lDjp04lDjp07lDjp05lDjp02lDjp03lDjp01lDjp02lDjpgg04x2jp:5<Enter>$4hDGkP:7<Enter>ddpggjddjlp

And the resulting output of the file is

CTF
pDawgAws
ibiL
{
it
r3_m3
V3l
0w
0
i3s_aus
}

Reversing these commands seemed trickier. So, I decided to take a sample flag, follow these commands to get the spaghetti output, and reverse it while mimicking the steps with the challenge’s output. Taking the flag DawgCTF{this_is_a_test_flag_12345678} with the same length and following the vim commands, we get

CTF
tDawghis
_is_
{
a_
flag_
345
12
6
test_78
}

Since we know the input and output, we can easily reverse this and the original text.

Flag: DawgCTF{pAwsibiLiti3s_ar3_m30wV3l0us}