laudom
/
haruhi-dl
2
0
Fork 0
Code Issues 13 Pull Requests Packages Projects Releases Wiki Activity

* reworked manual crypto extractor for YT

merge-requests/5/head
Dominika Liberda 2021-02-22 20:31:28 +01:00
parent 85bb796e05
commit 32cf3c6401
1 changed files with 14 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
devscripts/ExtractCryptoYT.sh
View File

@ -1,24 +1,26 @@
#!/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 $func
func="$(grep -P '[a-z]\=a\.split.*a\.join' <<< "$data")"
echo "full extracted function: $func"
obfuscatedName="$(echo $func | grep -Poh '\(""\);[A-Za-z]+' | sed -s 's/("");//')"
obfuscatedName="$(grep -Poh '\(""\);[A-Za-z]+' <<< "$func" | sed -s 's/("");//')"
obfuscatedFunc=$(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 "^..")"
obfuscatedFunc=$(tr -d '\n' <<< "$data" | grep -Poh "$obfuscatedName\=.*?}}")
mess="$(grep -Poh "..:function\([a-z]+,[a-z]+\){var" <<< "$obfuscatedFunc" | grep -Poh "^..")"
rev="$(grep -Poh "..:function\([a-z]+\){[a-z]+.rev" <<< "$obfuscatedFunc" | grep -Poh "^..")"
splice="$(grep -Poh "..:function\([a-z]+\,[a-z]+\){[a-z]+\." <<< "$obfuscatedFunc" | 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.*//')"
code="$(sed -E 's/.*[a-z]+\.split\(""\);//;s/return.*//' <<< "$func")"
echo "---"
IFS=';'
for i in $code; do
num="$(echo "$i" | grep -Poh ',[0-9]+' | grep -Poh '[0-9]+')"
num="$(grep -Poh ',[0-9]+' <<< "$i" | grep -Poh '[0-9]+')"
if [[ "$i" == *"$splice"* ]]; then
echo "a = a[$num:]"
elif [[ "$i" == *"$rev"* ]]; then
@ -30,9 +32,9 @@ for i in $code; do
fi
done
echo --- and now, JS
echo "--- and now, JS"
for i in $code; do
num="$(echo "$i" | grep -Poh ',[0-9]+' | grep -Poh '[0-9]+')"
num="$(grep -Poh ',[0-9]+' <<< "$i" | grep -Poh '[0-9]+')"
if [[ "$i" == *"$splice"* ]]; then
echo "a.splice(0,$num)"
elif [[ "$i" == *"$rev"* ]]; then
@ -42,4 +44,4 @@ for i in $code; do
else
echo "UNKNOWN????"
fi
done
done