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common.idh
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common.idh
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/*
* common.idc -- Common functions for my IDC scripts
*
* Copyright (C) Youness Alaoui (KaKaRoTo)
*
* This software is distributed under the terms of the GNU General Public
* License ("GPL") version 3, as published by the Free Software Foundation.
*
*/
#include <idc.idc>
#include "fnids.idh"
static CreateStructure(name) {
auto id;
Message(form("Creating structure %s\n", name));
id = GetStrucIdByName(name);
if (id != -1) {
Message(form("Structure %s already exists. Renaming it\n", name));
if (SetStrucName(id, form("%s_renamed", name)) == 0) {
Message(form("Structure %s_renamed already exists. deleting existing structure\n", name));
DelStruc(id);
}
id = -1;
}
id = AddStrucEx(-1, name, 0);
if (id == -1) {
Message (form("Error creating %s structure\n", name));
return 0;
}
return id;
}
static CreateOpdStructure(void) {
auto id;
id = CreateStructure("OPD_s");
AddStrucMember(id, "sub", 0x00, FF_DWRD | FF_0OFF, 0, 4);
AddStrucMember(id, "toc", 0x04, FF_DWRD | FF_0OFF, 0, 4);
return 1;
}
static CreateOpd (toc_addr) {
auto ea, func;
CreateOpdStructure();
Message("Defining OPD section entries\n");
ea = toc_addr - 0x8000;
/* Find last OPD entry */
while (ea != BADADDR && Dword(ea - 0x04) != toc_addr) {
ea = ea - 0x04;
}
while (ea != BADADDR && Dword(ea - 0x04) == toc_addr) {
ea = ea - 0x08;
MakeUnknown(ea, 0x08, DOUNK_SIMPLE);
MakeStructEx (ea, 0x08, "OPD_s");
func = Dword(ea);
MakeFunction(func, BADADDR);
}
return ea;
}
static CreateOpd64Structure(void) {
auto id;
id = CreateStructure("OPD64_s");
AddStrucMember(id, "sub", 0x00, FF_QWRD | FF_0OFF, 0, 8);
AddStrucMember(id, "toc", 0x08, FF_QWRD | FF_0OFF, 0, 8);
AddStrucMember(id, "opd32_sub", 0x10, FF_DWRD | FF_0OFF, 0, 4);
AddStrucMember(id, "opd32_toc", 0x14, FF_DWRD | FF_0OFF, 0, 4);
return 1;
}
static CreateOpd64 (start, end) {
auto ea, func;
CreateOpd64Structure();
Message("Defining OPD section entries\n");
ea = start;
while (ea != BADADDR && ea < end) {
MakeUnknown(ea, 0x18, DOUNK_SIMPLE);
MakeStructEx (ea, 0x18, "OPD64_s");
func = Qword(ea);
MakeFunction(func, BADADDR);
ea = ea + 0x18;
}
return ea;
}
static CreateExportStructure(void) {
auto id;
id = CreateStructure("ExportStub_s");
AddStrucMember(id, "ssize", 0x00, FF_WORD, 0, 2);
AddStrucMember(id, "header1", 0x02, FF_WORD, 0, 2);
AddStrucMember(id, "header2", 0x04, FF_WORD, 0, 2);
AddStrucMember(id, "exports", 0x06, FF_WORD, 0, 2);
AddStrucMember(id, "zero1", 0x08, FF_DWRD, 0, 4);
AddStrucMember(id, "zero2", 0x0C, FF_DWRD, 0, 4);
AddStrucMember(id, "noname", 0x10, FF_DWRD | FF_0OFF, 0, 4);
AddStrucMember(id, "fnid", 0x14, FF_DWRD | FF_0OFF, 0, 4);
AddStrucMember(id, "stub", 0x18, FF_DWRD | FF_0OFF, 0, 4);
return 1;
}
static CreateImportStructure(void) {
auto id;
id = CreateStructure("ImportStub_s");
AddStrucMember(id, "ssize", 0x00, FF_WORD, 0, 2);
AddStrucMember(id, "header1", 0x02, FF_WORD, 0, 2);
AddStrucMember(id, "header2", 0x04, FF_WORD, 0, 2);
AddStrucMember(id, "imports", 0x06, FF_WORD, 0, 2);
AddStrucMember(id, "zero1", 0x08, FF_DWRD, 0, 4);
AddStrucMember(id, "zero2", 0x0C, FF_DWRD, 0, 4);
AddStrucMember(id, "name", 0x10, FF_DWRD | FF_0OFF, 0, 4);
AddStrucMember(id, "fnid", 0x14, FF_DWRD | FF_0OFF, 0, 4);
AddStrucMember(id, "stub", 0x18, FF_DWRD | FF_0OFF, 0, 4);
AddStrucMember(id, "zero3", 0x1C, FF_DWRD, 0, 4);
AddStrucMember(id, "zero4", 0x20, FF_DWRD, 0, 4);
AddStrucMember(id, "zero5", 0x24, FF_DWRD, 0, 4);
AddStrucMember(id, "zero6", 0x28, FF_DWRD, 0, 4);
return 1;
}
static CreateImports(import_start, import_end) {
auto i, ea, imports, name_ptr, name, fnid_ptr, fnid, stub_ptr, stub;
auto fnid_name, fnid_comment;
Message("Defining Import stubs\n");
for (ea = import_start; ea < import_end; ea = ea + 0x2C) {
MakeUnknown(ea, 0x2C, DOUNK_SIMPLE);
MakeStructEx (ea, 0x2C, "ImportStub_s");
imports = Word(ea + 0x06);
name_ptr = Dword(ea + 0x10);
MakeStr(name_ptr, BADADDR);
name = GetString(name_ptr, -1, ASCSTR_C);
fnid_ptr = Dword(ea + 0x14);
MakeName(fnid_ptr, form("FNIDTable_%s", name));
stub_ptr = Dword(ea + 0x18);
MakeName(stub_ptr, form("StubTable_%s", name));
for (i = 0; i < imports; i++) {
MakeDword(fnid_ptr + (i*4));
fnid = Dword(fnid_ptr + (i*4));
fnid_name = get_fnid_name(name, fnid);
MakeComm(fnid_ptr + (i*4), form("Import %s (%d): FNID 0x%X : %s", name, i, fnid, fnid_name));
MakeDword(stub_ptr + (i*4));
OpOff (stub_ptr + (i*4), 0, 0);
stub = Dword(stub_ptr + (i*4));
MakeFunction(stub, BADADDR);
MakeName(stub, form("_%s_%s", name, fnid_name));
fnid_comment = get_fnid_comment(name, fnid);
if (fnid_comment != "")
SetFunctionCmt(stub, fnid_comment, 1);
}
}
}
static CreateExports(export_start, export_end) {
auto i, ea, exports, name_ptr, name, fnid_ptr, fnid, stub_ptr, stub_opd, stub;
auto fnid_name, fnid_comment;
Message("Defining Export stubs\n");
for (ea = export_start; ea < export_end; ea = ea + 0x1c) {
MakeUnknown(ea, 0x1c, DOUNK_SIMPLE);
MakeStructEx (ea, 0x1c, "ExportStub_s");
exports = Word(ea + 0x06);
name_ptr = Dword(ea + 0x10);
if (name_ptr == 0) {
name = "";
} else {
MakeStr(name_ptr, BADADDR);
name = GetString(name_ptr, -1, ASCSTR_C);
}
fnid_ptr = Dword(ea + 0x14);
MakeName(fnid_ptr, form("ExportFNIDTable_%s", name));
stub_ptr = Dword(ea + 0x18);
MakeName(stub_ptr, form("ExportStubTable_%s", name));
for (i = 0; i < exports; i++) {
MakeDword(fnid_ptr + (i*4));
fnid = Dword(fnid_ptr + (i*4));
fnid_name = get_fnid_name(name, fnid);
MakeComm(fnid_ptr + (i*4), form("Export %s(%d): FNID 0x%X : %s", name, i, fnid, fnid_name));
MakeDword(stub_ptr + (i*4));
OpOff (stub_ptr + (i*4), 0, 0);
stub_opd = Dword(stub_ptr + (i*4));
MakeName(stub_opd, form("_Export_%s_%s_opd", name, get_fnid_name(name, fnid)));
stub = Dword(stub_opd);
MakeFunction(stub, BADADDR);
MakeName(stub, form("_Export_%s_%s", name, fnid_name));
fnid_comment = get_fnid_comment(name, fnid);
if (fnid_comment != "")
SetFunctionCmt(stub, fnid_comment, 1);
}
}
}