The payload does not reach the Y2JB server
Low risk✓ ProvenWhat you see
- Sending the payload is refused, or it keeps waiting for an answer.
What it means
Y2JB runs a Remote JS Server on the console that receives what you send. The Y2JB README says this server does not always use port 50000: it usually does, but it may sometimes use another port, and that is normal.
What to do
Do not assume port 50000
If the current run shows a port, send to that one.
As a check, confirm the IP and the stage
Make sure you are sending to the console's current IP, and to the right service for this stage. The JavaScript server and the ELF loader are different services.
When to stop
Ports from other tutorials
A port used in another tutorial may not match your current run.
Sources
- Y2JB README (original project) (Oct 29, 2026)
Last reviewed: Oct 31, 2026
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