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HideProcess.cpp
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HideProcess.cpp
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#include "HideProcess.hpp"
#include <stdio.h>
std::wstring Hider::GetEXEDirectory()
{
wchar_t buffer[MAX_PATH];
GetModuleFileNameW(NULL, buffer, MAX_PATH);
std::wstring::size_type pos = std::wstring(buffer).find_last_of(L"\\/");
return std::wstring(buffer).substr(0, pos);
}
void Hider::ChangeModuleName(wchar_t* szModule, wchar_t* newName)
{
PPEB PEB = (PPEB)__readgsqword(0x60);
_LIST_ENTRY* f = PEB->Ldr->InMemoryOrderModuleList.Flink;
bool Found = FALSE;
while (!Found)
{
PLDR_DATA_TABLE_ENTRY dataEntry = CONTAINING_RECORD(f, LDR_DATA_TABLE_ENTRY, InMemoryOrderLinks);
if (wcsstr(dataEntry->FullDllName.Buffer, szModule) != NULL)
{
/* std::wstring Path = GetEXEDirectory();
Path += L"\\";
Path += newName; */ //uncomment if we want to use the full path name
//wcscpy(dataEntry->FullDllName.Buffer, newName);
wcscpy(dataEntry->FullDllName.Buffer, newName);
Found = TRUE;
return;
}
f = dataEntry->InMemoryOrderLinks.Flink;
}
}
void Hider::SetPEBDebugFlag(bool isDebugging)
{
PPEB PEB = (PPEB)__readgsqword(0x60);
PEB->BeingDebugged = isDebugging;
}
void Hider::SetModuleChecksum(wchar_t* szModule, ULONG Checksum)
{
PPEB PEB = (PPEB)__readgsqword(0x60); //serializes the peb
_LIST_ENTRY* f = PEB->Ldr->InMemoryOrderModuleList.Flink;
bool Found = FALSE;
while (!Found)
{
PLDR_DATA_TABLE_ENTRY dataEntry = CONTAINING_RECORD(f, LDR_DATA_TABLE_ENTRY, InMemoryOrderLinks);
if (wcsstr(dataEntry->FullDllName.Buffer, szModule) != NULL)
{
dataEntry->CheckSum = Checksum;
Found = TRUE;
return;
}
f = dataEntry->InMemoryOrderLinks.Flink;
}
}
void Hider::SketchyUnlink(wchar_t* szModule)
{
PPEB PEB = (PPEB)__readgsqword(0x60);
_LIST_ENTRY* f = PEB->Ldr->InMemoryOrderModuleList.Flink;
_LIST_ENTRY* f_prev;
bool Found = FALSE;
while (!Found)
{
PLDR_DATA_TABLE_ENTRY dataEntry = CONTAINING_RECORD(f, LDR_DATA_TABLE_ENTRY, InMemoryOrderLinks);
if (wcsstr(dataEntry->FullDllName.Buffer, szModule) != NULL)
{
printf("Found module, unlinking...\n");
f->Blink = f->Flink;
Found = TRUE;
return;
}
f = dataEntry->InMemoryOrderLinks.Flink;
f_prev = f->Blink;
}
}
void Hider::SetModuleBase(wchar_t* szModule, UINT64* Address)
{
PPEB PEB = (PPEB)__readgsqword(0x60);
_LIST_ENTRY* f = PEB->Ldr->InMemoryOrderModuleList.Flink;
bool Found = FALSE;
while (!Found)
{
PLDR_DATA_TABLE_ENTRY dataEntry = CONTAINING_RECORD(f, LDR_DATA_TABLE_ENTRY, InMemoryOrderLinks);
if (wcsstr(dataEntry->FullDllName.Buffer, szModule) != NULL)
{
dataEntry->DllBase = Address;
Found = TRUE;
return;
}
f = dataEntry->InMemoryOrderLinks.Flink;
}
}
void Hider::UnlinkModule(char *szModule)
{
DWORD dwPEB = 0, dwOffset = 0;
PLIST_ENTRY pUserModuleHead, pUserModule;
PPEB_LDR_DATA1 pLdrData;
PLDR_MODULE pLdrModule = NULL;
PUNICODE_STRING lpModule = NULL;
char szModuleName[512];
int i = 0, n = 0;
BYTE* _teb = (BYTE*)__readgsqword(0x30);
pLdrData = (PPEB_LDR_DATA1)(PULONGLONG)(*(PULONGLONG)((*(PULONGLONG)(_teb + 0x60)) + 0x18));
for (; i < 3; i++)
{
switch (i)
{
case 0:
pUserModuleHead = pUserModule = (PLIST_ENTRY)(&(pLdrData->InLoadOrderModuleList));
dwOffset = 0;
break;
case 1:
pUserModuleHead = pUserModule = (PLIST_ENTRY)(&(pLdrData->InMemoryOrderModuleList));
dwOffset = sizeof(UINT64) * 2;
break;
case 2:
pUserModuleHead = pUserModule = (PLIST_ENTRY)(&(pLdrData->InInitializationOrderModuleList));
dwOffset = sizeof(UINT64) * 4;
break;
}
while (pUserModule->Flink != pUserModuleHead)
{
pUserModule = pUserModule->Flink;
lpModule = (PUNICODE_STRING)(((LONGLONG)(pUserModule)) + (72 - dwOffset));
for (n = 0; n <(lpModule->Length) / 2 && n < 512; n++)
szModuleName[n] = (CHAR)(*((lpModule->Buffer) + (n)));
szModuleName[n] = '\0';
if (strstr(szModuleName, szModule))
{
if (!pLdrModule)
pLdrModule = (PLDR_MODULE)(((LONGLONG)(pUserModule)) - dwOffset);
pUserModule->Blink->Flink = pUserModule->Flink;
pUserModule->Flink->Blink = pUserModule->Blink;
printf("Found module to unlink...\n");
}
}
}
// Unlink from LdrpHashTable
if (pLdrModule)
{
pLdrModule->HashTableEntry.Blink->Flink = pLdrModule->HashTableEntry.Flink;
pLdrModule->HashTableEntry.Flink->Blink = pLdrModule->HashTableEntry.Blink;
}
}
void Hider::RemovePeHeader(HANDLE GetModuleBase)
{
PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)GetModuleBase;
PIMAGE_NT_HEADERS pNTHeader = (PIMAGE_NT_HEADERS)((PBYTE)pDosHeader + (DWORD)pDosHeader->e_lfanew);
if (pNTHeader->Signature != IMAGE_NT_SIGNATURE)
return;
if (pNTHeader->FileHeader.SizeOfOptionalHeader)
{
DWORD Protect;
WORD Size = pNTHeader->FileHeader.SizeOfOptionalHeader;
VirtualProtect((void*)GetModuleBase, Size, PAGE_EXECUTE_READWRITE, &Protect);
RtlZeroMemory((void*)GetModuleBase, Size);
VirtualProtect((void*)GetModuleBase, Size, Protect, &Protect);
}
}