[L4D2]Signature addition/support request

Question

[L4D2]Signature addition/support request

Closed this issue 3 years ago · 12 comments

/* ForEachTerrorPlayer(SpawnablePZScan &) */
"ForEachTerrorPlayer"
{
"library" "server"
"linux" "@Z19ForEachTerrorPlayerI15SpawnablePZScanEbRT"
}

sub_10356A50
The Windows signature is in this function, makesig reports me an error Ran out of bytes to create unique signature.

Answer 1 · 2021-12-30T05:06:30.000Z

I tried, but unfortunately, the function's bytes are not unique enough for wildcards. I could only get the raw bytes.

Signature for calling sub_10356A50:
"\x55\x8B\xEC\xA1\x90\x35\x7F\x10\x53\x56\x57\xBF\x01\x00\x00\x00\x39\x78\x14\x7C\x5A\x8B\x5D\x08\x57\xE8\x32\xFE"
/* 55 8B EC A1 90 35 7F 10 53 56 57 BF 01 00 00 00 39 78 14 7C 5A 8B 5D 08 57 E8 32 FE */

This will most likely break in a future update.

Answer 2 · 2021-12-30T07:14:44.000Z

I tried, but unfortunately, the function's bytes are not unique enough for wildcards. I could only get the raw bytes.
Signature for calling sub_10356A50:
"\x55\x8B\xEC\xA1\x90\x35\x7F\x10\x53\x56\x57\xBF\x01\x00\x00\x00\x39\x78\x14\x7C\x5A\x8B\x5D\x08\x57\xE8\x32\xFE"
/* 55 8B EC A1 90 35 7F 10 53 56 57 BF 01 00 00 00 39 78 14 7C 5A 8B 5D 08 57 E8 32 FE */
This will most likely break in a future update.

Thank you so much, the Psykotikism. signature is valid

Answer 3 · 2021-12-30T07:25:49.000Z

Awesome, I'll add it to the repository soon.

Answer 4 · 2021-12-30T22:49:33.000Z

emmm... Yesterday, the signature was valid when I tested it with escsig_search.idc, but it could not be loaded when I tested it on the Windows server just now.

Answer 5 · 2021-12-31T03:49:38.000Z

Do you have a sample plugin I can test with?

Answer 6 · 2021-12-31T07:13:34.000Z

Do you have a sample plugin I can test with?

https://github.com/umlka/l4d2/tree/main/control_zombies

Answer 7 · 2021-12-31T09:17:47.000Z

https://github.com/umlka/l4d2/tree/main/control_zombies

You're not using the same signature I provided.
https://github.com/umlka/l4d2/blob/main/control_zombies/control_zombies.txt#L127-L128

I tried the plugin with my signature. It fails to detour the function. I'm not sure why since I even tried changing the detour's setup.

Answer 8 · 2021-12-31T10:00:59.000Z

Yes, So I am now trying to detour all the functions that call it, but ZSpawnCore seems to be unable to detour it. I have now detour Script_ZSpawn, z_spawn_old and z_spawn. According to the current test, it can achieve the function I want.

Answer 9 · 2022-01-01T13:43:14.000Z

Yes, So I am now trying to detour all the functions that call it, but ZSpawnCore seems to be unable to detour it. I have now detour Script_ZSpawn, z_spawn_old and z_spawn. According to the current test, it can achieve the function I want.

I'll work on adding/supporting signatures for those functions.

Answer 10 · 2022-01-01T23:04:31.000Z

Yes, So I am now trying to detour all the functions that call it, but ZSpawnCore seems to be unable to detour it. I have now detour Script_ZSpawn, z_spawn_old and z_spawn. According to the current test, it can achieve the function I want.

I'll work on adding/supporting signatures for those functions.

Thanks, Psykotikism

Answer 11 · 2022-01-02T19:25:08.000Z

Just added support for several functions, including all the ones mentioned above.

Answer 12 · 2022-01-03T03:05:33.000Z

Just added support for several functions, including all the ones mentioned above.

Thank you, I have updated all my plugins that use these signatures