Can't patch game version 8.12

[nicoco007]

Looks like Riot changed something again since it doesn't seem possible to patch the game anymore. I'm getting the dreaded "Flow was not able to patch your League of Legends executable" message when trying to patch the League of Legends exe in RADS\solutions\lol_game_client_sln\releases\0.0.1.222\deploy of patch 8.12.

[Nosskire]

Same Issue for me in Patch 8.13

[Shodance]

Yup, flow's broke.

Guess we all just have to hope and pray that it gets fixed, cause without stuff like Poppy's old VO league is unplayable for me.

[sheerlox]

It seems the public key used to verify the signature of the WAD files changes every patch.
I think that's why @Crauzer declared the WAD_ECDSA_PATTERNS list containing them.
I don't know how he found them in the first place because I'm not good at reverse engineering, but we need to find the last ones so we can append them to the list. (I think)

https://github.com/Crauzer/Flow/blob/master/Flow/MainWindow.xaml.cs

private static readonly byte[] WAD_ECDSA_PATCH = { 0xB8, 0x01, 0x00, 0x00, 0x00 };
private static readonly List<byte[]> WAD_ECDSA_PATTERNS = new List<byte[]>()
{
    new byte[] { 0x83, 0xE6, 0xE0, 0x56, 0x53, 0x57, 0xE8 }, //Before 8.1
    new byte[] { 0x93, 0x3C, 0x26, 0x00, 0x56, 0x53, 0x57, 0xE8 }, //8.1 Live
    new byte[] { 0x83, 0x36, 0x26, 0x00, 0x56, 0x53, 0x57, 0xE8 }, //8.2 PBE
    new byte[] { 0x50, 0x6A, 0x00, 0x57, 0xE8, 0xFF, 0xFF, 0xFF, 0x00, 0x56, 0x53, 0x57, 0xE8} //8.3 PBE +
};
private static readonly byte WAD_ECDSA_REPLACE = 0xE8;