find-UTIL_ClientPrintAll

Find UTIL_ClientPrintAll

Locate UTIL_ClientPrintAll in CS2 server.dll or server.so using IDA Pro MCP tools.

Method

1. Search for the idle kick string:

   mcp__ida-pro-mcp__find_regex pattern="#Game_idle_kick"
   

2. Get cross-references to the string:

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

3. The xref will point to the idle kick handler function. Decompile it:

   mcp__ida-pro-mcp__decompile addr="<function_addr>"
   

4. In the decompiled code, locate the call that uses "#Game_idle_kick" as a parameter:

   sub_XXXXXX(2, (int)"#Game_idle_kick", (int)v16, 0, 0, 0);
   

   This sub_XXXXXX is UTIL_ClientPrintAll.

5. Rename the function:

   mcp__ida-pro-mcp__rename batch={"func": [{"addr": "<UTIL_ClientPrintAll_addr>", "name": "UTIL_ClientPrintAll"}]}
   

6. Generate and validate unique signature:

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

7. Write IDA analysis output as YAML beside the binary:

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

   Required parameters:

   • func_name: UTIL_ClientPrintAll
   • func_addr: The function address from step 5
   • func_sig: The validated signature from step 6

String Reference

The function is called with the localization string #Game_idle_kick when a player is kicked for being idle:

UTIL_ClientPrintAll(2, "#Game_idle_kick", player_name, 0, 0, 0);

Function Characteristics

• Purpose: Broadcasts a message to all connected clients
• Parameters:
  • arg0 (int): Message destination type (2 = HUD_PRINTCENTER or similar)
  • arg1 (const char*): Localization string or message
  • arg2 (const char*): Parameter 1 (e.g., player name)
  • arg3-arg5: Additional parameters (usually 0)

Function Signature Pattern

The function has a distinctive prologue that saves multiple callee-saved registers:

push    rbp
mov     rbp, rsp
push    r15
mov     r15, r9
push    r14
mov     r14, r8
push    r13
mov     r13, rcx
push    r12
mov     r12, rdx
push    rbx
lea     rbx, [rbp-50h]
sub     rsp, 38h

Output YAML Format

The output YAML filename depends on the platform:

• server.dll → UTIL_ClientPrintAll.windows.yaml
• server.so → UTIL_ClientPrintAll.linux.yaml

func_va: 0x18BD940       # Virtual address of the function - changes with game updates
func_rva: 0x18BD940      # Relative virtual address (VA - image base) - changes with game updates
func_size: 0x85          # Function size in bytes - changes with game updates
func_sig: XX XX XX XX XX # Unique byte signature for pattern scanning - changes with game updates