Patch 6609 — client connects and gets seed, but never sends login packet (custom account server)

[Shiemy]

Patch 6609 — client connects and gets seed, but never sends login packet (custom account server)

Hi all,

Working on a custom account server for patch 6609 (client shows "Conquer 3.0" on the splash screen) and I've hit a wall I can't seem to diagnose further with network capture alone. Hoping someone who's done this exact patch has run into this.

Setup:

Client is Conquer.exe DX8, patched with cyano's RSA tool — extracted the original public key, generated my own keypair, patched the binary, re-encrypted Server.dat with a single custom server entry pointing at my own account server (verified the round-trip decrypts correctly, and the entry does show up and is selectable in-game).

My account server is a from-scratch implementation (not based on any existing emulator). It correctly speaks the standard cipher (0x9D/0x62 substitution tables, XOR 0xAB, nibble swap) and sends MsgEncryptCode (1059, 8 bytes, seed) immediately on connect — verified byte-for-byte correct against a hand-rolled test client that successfully round-trips a full login using this exact cipher/framing.

What I'm seeing:

Client connects to my server on Log In, receives the seed packet, and then either (a) disconnects immediately without sending anything back, or (b) doesn't even attempt a connection at all (inconsistent between attempts, same account/password, same server entry, fresh client relaunch each time).

Confirmed via raw byte logging on my server: literally zero bytes are ever received back after the seed packet on the connections that do occur.

Ruled out: Server.dat tree structure (mirrors the original decrypted list's root→category→leaf shape), IP format (primary#backup vs bare IP), IP address type (loopback vs a real-looking public-range IP), and the FlashIcon field being empty vs a real asset path — none of these changed the behavior.

My question:
I haven't found a custom loader that worked for me yet, I've been kinda banging my head against the keyboard for a couple of days getting the same error. but at this point I really need any help I can get. so please if someone knows what can be done here let me know, thank you!

[Spirited]

We have too many threads of this. 

1. This is not an open-source project. We're a game preservation forum, not support for some rando source you paid for.
2. You fell for a scam. The source is bad, and the loader is paywalled for edits. You must go to your scammer to change the IP or know how to reverse engineer and do it yourself. Or edit the source to use a different launcher. Not sure if that's even worth doing.

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