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WillPlus3 hook (#18)

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Fixed By [lgztx96](https://github.com/Artikash/Textractor/pull/880)

Co-authored-by: lgztx <z2337878191@outlook.com>
This commit is contained in:
Shoaib Shakeel 2022-09-19 21:05:33 +02:00 committed by hentaitaku
parent 1f7d8d77a8
commit ff5ea30230
1 changed files with 16 additions and 8 deletions
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18
texthook/engine/engine.cc
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@ -9672,7 +9672,7 @@ static bool InsertNewWillPlusHook()
found = true; found = true;
} }
/* /*
hook cmp esi,0x3000 hook cmp esi or ebx,0x3000
Sample games: Sample games:
https://vndb.org/r54549 https://vndb.org/r54549
https://vndb.org/v22705 https://vndb.org/v22705
@ -9680,17 +9680,25 @@ static bool InsertNewWillPlusHook()
https://vndb.org/v25719 https://vndb.org/v25719
https://vndb.org/v27227 https://vndb.org/v27227
https://vndb.org/v27385 https://vndb.org/v27385
https://vndb.org/v34544
https://vndb.org/v35279
https://vndb.org/r94284
*/ */
const BYTE pattern[] = const BYTE pattern[] =
{ {
0x81,0xfe,0x00,0x30,0x00,0x00 //81FE 00300000 cmp esi,0x3000 0x81,XX, 0x00,0x30,0x00,0x00 // 81FE or FB 00300000 cmp esi or ebx,0x3000
// je xx
// hook here
}; };
for (auto addr : Util::SearchMemory(pattern, sizeof(pattern), PAGE_EXECUTE, processStartAddress, processStopAddress)) for (auto addr : Util::SearchMemory(pattern, sizeof(pattern), PAGE_EXECUTE, processStartAddress, processStopAddress))
{ {
BYTE byte = *(BYTE*)(addr + 1);
if (byte != 0xfe && byte != 0xfb)
continue;
HookParam hp = {}; HookParam hp = {};
hp.address = addr; hp.address = addr + 8;
hp.type = USING_UNICODE; hp.type = USING_UNICODE;
hp.offset = pusha_esi_off - 4; hp.offset = byte == 0xfe ? pusha_esi_off - 4 : pusha_ebx_off - 4;
hp.length_offset = 1; hp.length_offset = 1;
NewHook(hp, "WillPlus3"); NewHook(hp, "WillPlus3");
found = true; found = true;
@ -9704,7 +9712,7 @@ static bool InsertNewWillPlusHook()
bool InsertWillPlusHook() bool InsertWillPlusHook()
{ {
bool ok = InsertOldWillPlusHook(); bool ok = InsertOldWillPlusHook();
ok = InsertWillPlusWHook() || InsertWillPlusAHook() || InsertNewWillPlusHook() || ok; ok = InsertWillPlusWHook() || InsertNewWillPlusHook() || InsertWillPlusAHook() || ok;
if (!ok) PcHooks::hookOtherPcFunctions(); if (!ok) PcHooks::hookOtherPcFunctions();
return ok; return ok;
} }