name: find-CTakeDamageInfo_GetWeaponName
description: Find and identify the CTakeDamageInfo_GetWeaponName function in CS2 binary using IDA Pro MCP. Use this skill when reverse engineering CS2 server.dll or server.so to locate the GetWeaponName function by searching for the "_projectile" string reference and analyzing cross-references.

Find CTakeDamageInfo_GetWeaponName

Locate CTakeDamageInfo::GetWeaponName in CS2 server.dll or server.so using IDA Pro MCP tools.

Method

1. Search for the string:
   mcp__ida-pro-mcp__find_regex pattern="_projectile"

Look for the exact string _projectile (not the ones with prefixes like flashbang_projectile).

1. Get cross-references to the string:
   mcp__ida-pro-mcp__xrefs_to addrs="<string_addr>"

2. Decompile the referencing function and verify it matches this pattern:
   mcp__ida-pro-mcp__decompile addr="<function_addr>"

The target function should contain code similar to:
cpp if ( (unsigned __int8)sub_XXXXXXXX(v6) ) return v6 + 7; v15 = sub_XXXXXXXX(v6, 95i64); // 95 = '_' character v16 = v15; if ( !v15 || (unsigned int)V_stricmp_fast(v15, "_projectile") ) return v6; sub_XXXXXXXX(&unk_XXXXXXXX, "%.*s", (unsigned int)(v16 - (_DWORD)v6), v6); return (char *)&unk_XXXXXXXX;

Key characteristics:
- Uses V_stricmp_fast to compare with "_projectile"
- Uses "%.*s" format string for string manipulation
- Returns a const char*

1. Rename the function:
   mcp__ida-pro-mcp__rename batch={"func": [{"addr": "<function_addr>", "name": "CTakeDamageInfo_GetWeaponName"}]}

2. Generate and validate unique signature:

DO NOT use find_bytes as it won't work for function.
ALWAYS Use SKILL /generate-signature-for-function to generate a robust and unique signature for the function.

1. 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: CTakeDamageInfo_GetWeaponName
- func_addr: The function address from step 3
- func_sig: The validated signature from step 5

Note: This is NOT a virtual function, so no vtable parameters are needed.

Signature Pattern

The function contains:
- String comparison with "_projectile" using V_stricmp_fast
- Format string "%.*s" for extracting weapon name prefix
- Character search for '_' (95 decimal)

Function Characteristics

• Prototype: const char *CTakeDamageInfo::GetWeaponName(CTakeDamageInfo *pthis)
• Parameters:
• pthis: Pointer to the CTakeDamageInfo instance (this)
• Return: const char* - the weapon name with _projectile suffix stripped if present

DLL Information

• DLL: server.dll (Windows) / server.so (Linux)

Notes

• This is a regular member function, NOT a virtual function
• No vtable information is needed for this function

Output YAML Format

The output YAML filename depends on the platform:
- server.dll → CTakeDamageInfo_GetWeaponName.windows.yaml
- server.so → CTakeDamageInfo_GetWeaponName.linux.yaml

func_va: 0x180XXXXXX      # Virtual address of the function - This can change when game updates.
func_rva: 0xXXXXXX        # Relative virtual address (VA - image base) - This can change when game updates.
func_size: 0xXXX          # Function size in bytes - This can change when game updates.
func_sig: XX XX XX XX XX  # Unique byte signature for pattern scanning - This can change when game updates.