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hooklib: add createprocess hook skeleton

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This commit is contained in:
Hay1tsme 2023-09-13 17:54:40 -04:00
parent 98d2ea1390
commit 3d7d9fcaa5
2 changed files with 190 additions and 0 deletions
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176
hooklib/createprocess.c Normal file
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#include <windows.h>
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "hook/table.h"
static BOOL WINAPI my_CreateProcessA(
LPCSTR lpApplicationName,
LPSTR lpCommandLine,
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCSTR lpCurrentDirectory,
LPSTARTUPINFOA lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation
);
BOOL my_CreateProcessW(
LPCWSTR lpApplicationName,
LPWSTR lpCommandLine,
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCWSTR lpCurrentDirectory,
LPSTARTUPINFOW lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation
);
static BOOL (WINAPI *next_CreateProcessA)(
LPCSTR lpApplicationName,
LPSTR lpCommandLine,
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCSTR lpCurrentDirectory,
LPSTARTUPINFOA lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation
);
static BOOL (WINAPI *next_CreateProcessW)(
LPCWSTR lpApplicationName,
LPWSTR lpCommandLine,
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCWSTR lpCurrentDirectory,
LPSTARTUPINFOW lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation
);
static const struct hook_symbol win32_hooks[] = {
{
.name = "CreateProcessA",
.patch = my_CreateProcessA,
.link = (void **) &next_CreateProcessA
},
{
.name = "CreateProcessW",
.patch = my_CreateProcessW,
.link = (void **) &next_CreateProcessW
},
};
static bool did_init = false;
static struct process_hook_sym_w *processe_syms_w;
static struct process_hook_sym_a *processe_syms_a;
static size_t processe_nsyms_a = 0;
static size_t processe_nsyms_w = 0;
void createprocess_push_hook_w(const wchar_t *name, const wchar_t *dll_name, const wchar_t *tail) {
createprocess_hook_init();
}
void createprocess_push_hook_a(const char *name, const char *dll_name, const char *tail) {
createprocess_hook_init();
}
void createprocess_hook_init() {
if (did_init) {
return;
}
did_init = true;
hook_table_apply(
NULL,
"kernel32.dll",
win32_hooks,
_countof(win32_hooks));
dprintf("CreateProcess: Init\n");
}
static BOOL WINAPI my_CreateProcessA(
LPCSTR lpApplicationName,
LPSTR lpCommandLine,
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCSTR lpCurrentDirectory,
LPSTARTUPINFOA lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation
)
{
if (strncmp(".\\15312firm\\firmupdate_1113.exe", lpCommandLine, 31)) {
return next_CreateProcessA(
lpApplicationName,
lpCommandLine,
lpProcessAttributes,
lpThreadAttributes,
bInheritHandles,
dwCreationFlags,
lpEnvironment,
lpCurrentDirectory,
lpStartupInfo,
lpProcessInformation
);
}
dprintf("CreateProcess: Hooking child process %s\n", lpCommandLine);
char new_cmd[MAX_PATH] = "inject -d -k carolhook.dll ";
strcat_s(new_cmd, MAX_PATH, lpCommandLine);
return next_CreateProcessA(
lpApplicationName,
new_cmd,
lpProcessAttributes,
lpThreadAttributes,
bInheritHandles,
dwCreationFlags,
lpEnvironment,
lpCurrentDirectory,
lpStartupInfo,
lpProcessInformation
);
}
BOOL my_CreateProcessW(
LPCWSTR lpApplicationName,
LPWSTR lpCommandLine,
LPSECURITY_ATTRIBUTES lpProcessAttributes,
LPSECURITY_ATTRIBUTES lpThreadAttributes,
BOOL bInheritHandles,
DWORD dwCreationFlags,
LPVOID lpEnvironment,
LPCWSTR lpCurrentDirectory,
LPSTARTUPINFOW lpStartupInfo,
LPPROCESS_INFORMATION lpProcessInformation)
{
return next_CreateProcessW(
lpApplicationName,
lpCommandLine,
lpProcessAttributes,
lpThreadAttributes,
bInheritHandles,
dwCreationFlags,
lpEnvironment,
lpCurrentDirectory,
lpStartupInfo,
lpProcessInformation
);
}

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hooklib/createprocess.h Normal file
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void createprocess_push_hook_w();
void createprocess_push_hook_a();
struct process_hook_sym_w {
const wchar_t *name;
const wchar_t *dll_name;
const wchar_t *tail;
};
struct process_hook_sym_a {
const char *name;
const char *dll_name;
const char *tail;
};