Immediately following the COFF symbol table is the COFF string table. The position of this table is found by taking the symbol table address in the COFF header, and adding the number of symbols multiplied by the size of a symbol.
At the beginning of the COFF string table are 4 bytes containing the total size (in bytes) of the rest of the string table. This size includes the size field itself, so that the value in this location would be 4 if no strings were present.
Following the size are null-terminated strings pointed to by symbols in the COFF symbol table.