haruhi-dl/devscripts/ExtractCryptoYT.sh

45 lines
1.4 KiB
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Executable File

#!/bin/bash
data="$(curl -s "https://www.youtube.com/s/player/$1/player_ias.vflset/en_GB/base.js")"
func="$(echo "$data" | grep -P '[a-z]\=a\.split.*a\.join')"
echo $func
obfuscatedName="$(echo $func | grep -Poh '\(""\);[A-Za-z]+' | sed -s 's/("");//')"
obfuscatedFunc=$(echo "$data" | tr -d '\n' | grep -Poh "$obfuscatedName\=.*?}}")
mess="$(echo "$obfuscatedFunc" | grep -Poh "..:function\([a-z]+,[a-z]+\){var" | grep -Poh "^..")"
rev="$(echo "$obfuscatedFunc" | grep -Poh "..:function\([a-z]+\){[a-z]+.rev" | grep -Poh "^..")"
splice="$(echo "$obfuscatedFunc" | grep -Poh "..:function\([a-z]+\,[a-z]+\){[a-z]+\." | grep -Poh "^..")"
echo "mess name: $mess"
echo "reverse name: $rev"
echo "splice name: $splice"
code="$(echo "$func" | sed -E 's/.*[a-z]+\.split\(""\);//;s/return.*//')"
IFS=';'
for i in $code; do
num="$(echo "$i" | grep -Poh ',[0-9]+' | grep -Poh '[0-9]+')"
if [[ "$i" == *"$splice"* ]]; then
echo "a = a[$num:]"
elif [[ "$i" == *"$rev"* ]]; then
echo "a.reverse()"
elif [[ "$i" == *"$mess"* ]]; then
echo "a = self.mess(a, $num)"
else
echo "UNKNOWN????"
fi
done
echo --- and now, JS
for i in $code; do
num="$(echo "$i" | grep -Poh ',[0-9]+' | grep -Poh '[0-9]+')"
if [[ "$i" == *"$splice"* ]]; then
echo "a.splice(0,$num)"
elif [[ "$i" == *"$rev"* ]]; then
echo "a.reverse()"
elif [[ "$i" == *"$mess"* ]]; then
echo "mess(a,$num)"
else
echo "UNKNOWN????"
fi
done