find-CEntityIdentity_SetEntityName

CEntityIdentity_SetEntityName Function Location Workflow

Overview

This workflow locates CEntityIdentity_SetEntityName in CS2 server binary files. This function sets the targetname (entity name) on a CEntityIdentity object. It is called from a V8 script binding wrapper that logs "Entity" / "SetEntityName".

Location Steps

1. Search for Signature Strings

Use find_regex to search for the SetEntityName string:

mcp__ida-pro-mcp__find_regex(pattern="SetEntityName")

Expected result: Find string addresses containing "SetEntityName".

2. Find Cross-References

Use xrefs_to to find locations that reference the "SetEntityName" string:

mcp__ida-pro-mcp__xrefs_to(addrs="<string_addr>")

Expected result: Find the V8 binding wrapper function that references "SetEntityName" multiple times alongside "Entity".

3. Decompile the V8 Binding Wrapper

Decompile the function found in step 2 and locate the following code pattern:

if ( *(int *)(a1 + 16) >= 1 )
{
    v16 = 0LL;
    if ( (unsigned __int8)sub_XXXXX(v17) )
    {
      v14 = byte_XXXXX;
      if ( v16 )
        v14 = v16;
      sub_XXXXX(*(_QWORD *)(v13 + 16), (__int64)v14);  // <-- This is CEntityIdentity_SetEntityName
    }
    else if ( (unsigned __int8)LoggingSystem_IsChannelEnabled(...) )
    {
      LoggingSystem_Log(..., "Method %s.%s invoked with bad %s value. (parameter #%d)\n",
        "Entity", "SetEntityName", "name", 0);
    }
}
else if ( (unsigned __int8)LoggingSystem_IsChannelEnabled(...) )
{
    LoggingSystem_Log(..., "Method %s.%s requires %d argument(s), %s.",
      "Entity", "SetEntityName", 1, "(name: string)");
}

Key identification: CEntityIdentity_SetEntityName is the call sub_XXXXX(*(_QWORD *)(v13 + 16), v14) that takes 2 parameters — the entity identity pointer (obtained via *(_QWORD *)(v13 + 16)) and the name string. It appears inside the success branch after the V8 argument validation, right before the bad-value error log that mentions "name" as parameter #0.

4. Rename Function

Use rename to give the function a meaningful name:

mcp__ida-pro-mcp__rename(batch={"func": {"addr": "<SetEntityName_func_addr>", "name": "CEntityIdentity_SetEntityName"}})

5. Generate and Validate Unique Signature

ALWAYS Use SKILL /generate-signature-for-function to generate a robust and unique signature for the function.

6. Write IDA Analysis Output as YAML

ALWAYS Use SKILL /write-func-as-yaml to write the analysis results.

Required parameters:

• func_name: CEntityIdentity_SetEntityName
• func_addr: The function address from step 3
• func_sig: The validated signature from step 5

Function Characteristics

The CEntityIdentity_SetEntityName function:

• Is not a virtual function (no vtable lookup needed)
• Takes 2 parameters: (CEntityIdentity* identity, const char* name)
• Is called from a V8 script binding wrapper that logs "Entity" / "SetEntityName"
• The first argument is the entity identity pointer accessed via *(_QWORD *)(entity + 16) (offset 0x10 from the entity instance)
• The wrapper also references the argument descriptor string "(name: string)"

Output YAML Format

The output YAML filename depends on the platform:

• server.dll → CEntityIdentity_SetEntityName.windows.yaml
• server.so / libserver.so → CEntityIdentity_SetEntityName.linux.yaml