Initial commit

This commit is contained in:
mkrsym1
2023-06-06 00:23:08 +03:00
commit 72626c2c18
37 changed files with 1146 additions and 0 deletions

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#include <windows.h>
static inline void write_protected_process_memory(HANDLE process, void *address, const void *buf, size_t size) {
DWORD oldProtect;
VirtualProtectEx(process, address, size, PAGE_EXECUTE_READWRITE, &oldProtect);
size_t bytesWritten;
WriteProcessMemory(process, address, buf, size, &bytesWritten);
VirtualProtectEx(process, address, size, oldProtect, &oldProtect);
}
static inline void inject(HANDLE process, const void *payload, size_t payloadSize, const char *dllPath) {
size_t _;
// Inject the loader into the module
size_t dllPathLen = strlen(dllPath) + 1;
char *remoteAlloc = VirtualAllocEx(process, NULL, payloadSize + dllPathLen, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
WriteProcessMemory(process, remoteAlloc, payload, payloadSize, &_);
WriteProcessMemory(process, remoteAlloc + payloadSize, dllPath, dllPathLen, &_);
// Find the EXE header in the process
char exeHeader[1024];
IMAGE_DOS_HEADER *dosHeader;
IMAGE_NT_HEADERS64 *ntHeaders;
MEMORY_BASIC_INFORMATION memoryInfo;
char *currentAddress = 0x0;
while (VirtualQueryEx(process, currentAddress, &memoryInfo, sizeof(memoryInfo))) {
ReadProcessMemory(process, currentAddress, exeHeader, sizeof(exeHeader), &_);
dosHeader = (IMAGE_DOS_HEADER*)exeHeader;
// DOS header magic "MZ"
if (dosHeader->e_magic != 0x5A4D) {
goto cont;
}
ntHeaders = (IMAGE_NT_HEADERS64*)(exeHeader + dosHeader->e_lfanew);
// NT header signature "PE"
if (ntHeaders->Signature != 0x4550) {
goto cont;
}
// Skip DLLs
if ((ntHeaders->FileHeader.Characteristics | IMAGE_FILE_DLL) == IMAGE_FILE_DLL) {
goto cont;
}
// Skip potential headers without an entry point
// I have no idea how and why they exist, but apparently they do
if (ntHeaders->OptionalHeader.AddressOfEntryPoint == 0) {
goto cont;
}
// Found EXE header
break;
cont:
currentAddress += memoryInfo.RegionSize;
}
char *exe = (char*)memoryInfo.BaseAddress;
// Replace the entry point with a jump to the loader
char *entryPoint = exe + ntHeaders->OptionalHeader.AddressOfEntryPoint;
const unsigned char JUMP_INST[] = { 0xFF, 0x25, 0x00, 0x00, 0x00, 0x00 };
write_protected_process_memory(process, entryPoint, JUMP_INST, sizeof(JUMP_INST));
write_protected_process_memory(process, entryPoint + sizeof(JUMP_INST), &remoteAlloc, sizeof(remoteAlloc));
// Break the import table to prevent any dlls from being loaded
// Step 1: break the first import descriptor
char *importDescriptors = exe + ntHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress;
IMAGE_IMPORT_DESCRIPTOR firstDescriptor;
ZeroMemory(&firstDescriptor, sizeof(firstDescriptor));
write_protected_process_memory(process, importDescriptors, &firstDescriptor, sizeof(firstDescriptor));
// Step 2: break the image data directory entry
ntHeaders->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size = 0;
write_protected_process_memory(process, exe, exeHeader, sizeof(exeHeader));
}

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# Assemble the payload that will be injected into the game
l_payload_bin = asm_gen.process('src/payload.asm')
# Embed it into the library
l_res_files = custom_target(
'lpayload.[oh]',
output: [ 'lpayload.o', 'lpayload.h' ],
input: [ l_payload_bin ],
command: [ gen_res, './injector/launcher_payload', '@OUTPUT0@', '@OUTPUT1@', '@INPUT@' ]
)
shared_library(
'launcher_payload',
'src/dll.c',
l_res_files,
include_directories: '../include',
name_prefix: ''
)

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#include <injshared.h>
#include <lpayload.h>
const char EXE_ENV[] = "JADEITE_TARGET_EXE_PATH";
const char INJECT_DLL_ENV[] = "JADEITE_INJECT_DLL_PATH";
static inline void read_env(const char *env, char *dest, size_t size) {
GetEnvironmentVariableA(env, dest, size);
SetEnvironmentVariableA(env, "");
}
BOOL WINAPI DllMain(HINSTANCE inst, DWORD reason, LPVOID reserved) {
// Only listen for attach
if (reason != DLL_PROCESS_ATTACH) {
return TRUE;
}
// Get target EXE path
char targetExe[MAX_PATH];
read_env(EXE_ENV, targetExe, sizeof(targetExe));
// Get the path of the DLL to inject
char injectDll[MAX_PATH];
read_env(INJECT_DLL_ENV, injectDll, sizeof(injectDll));
// Compute the working directory path
char workdir[MAX_PATH];
strcpy(workdir, targetExe);
*(strrchr(workdir, '\\')) = '\0';
// Start the game
STARTUPINFO si;
ZeroMemory(&si, sizeof(si));
PROCESS_INFORMATION pi;
si.cb = sizeof(si);
ZeroMemory(&pi, sizeof(pi));
if (!CreateProcessA(
targetExe,
NULL,
NULL,
NULL,
FALSE,
CREATE_SUSPENDED,
NULL,
workdir,
&si,
&pi
)) {
exit(1);
}
// Inject
void *payloadStart = &_binary_lpayload_o_p_payload_bin_start;
size_t payloadSize = (size_t)&_binary_lpayload_o_p_payload_bin_size;
inject(pi.hProcess, payloadStart, payloadSize, injectDll);
// Resume the process
ResumeThread(pi.hThread);
// The launcher process should now hang untill the game terminates
WaitForSingleObject(pi.hProcess, INFINITE);
return TRUE;
}

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BITS 64
main: ; Replacement entry point
push rbp
mov rbp, rsp
sub rsp, 30h + 90h
call GetKernel32ModuleHandle
mov [rbp - 8h], rax ; kernel32.dll
mov rcx, rax
call GetAddressOf_GetProcAddress
mov [rbp - 10h], rax ; *GetProcAddress
mov rcx, [rbp - 8h] ; kernel32.dll
lea rdx, [rel s_LoadLibraryA]
mov rax, [rbp - 10h] ; *GetProcAddress
call rax ; rax = *LoadLibraryA
mov [rbp - 18h], rax
lea rcx, [rel dllPath]
call rax ; LoadLibraryA(dllPath)
mov rcx, [rbp - 8h] ; kernel32.dll
lea rdx, [rel s_GetModuleHandleA]
mov rax, [rbp - 10h] ; *GetProcAddress
call rax ; rax = *GetModuleHandle
mov rcx, 0
call rax ; rax = .exe base address
mov [rbp - 20h], rax
mov rcx, [rbp - 8h] ; kernel32.dll
lea rdx, [rel s_GetCommandLineW]
mov rax, [rbp - 10h] ; *GetProcAddress
call rax ; rax = *GetCommandLineW
call rax ; rax = command line
mov [rbp - 28h], rax
lea rcx, [rel s_UnityPlayer.dll]
mov rax, [rbp - 18h] ; *LoadLibraryA
call rax ; rax = UnityPlayer.dll
mov rcx, rax
lea rdx, [rel s_UnityMain]
mov rax, [rbp - 10h] ; *GetProcAddress
call rax ; rax = *UnityMain
mov rcx, [rbp - 20h] ; .exe base address
mov rdx, 0 ; hPrevInstance - 0
mov r8, [rbp - 28h] ; command line
mov r9, 1 ; SW_NORMAL
call rax ; UnityMain(...)
add rsp, 30h + 90h
pop rbp
ret
; https://dennisbabkin.com/blog/?t=how-to-implement-getprocaddress-in-shellcode
GetKernel32ModuleHandle:
mov rax, gs:[60h]
mov rax, [rax + 18h]
mov rax, [rax + 20h]
mov rax, [rax]
mov rax, [rax]
mov rax, [rax + 20h]
ret
GetAddressOf_GetProcAddress:
mov eax, [rcx + 3ch]
add rax, rcx
lea rax, [rax + 88h]
mov edx, [rax]
lea rax, [rcx + rdx]
mov edx, [rax + 18h]
mov r8d, [rax + 20h]
lea r8, [rcx + r8]
mov r10, 41636f7250746547h ; "GetProcA"
mov r11, 0073736572646441h ; "Address\0"
GAO_GPA@1:
mov r9d, [r8]
lea r9, [rcx + r9]
; Function name comparision
cmp r10, [r9]
jnz GAO_GPA@2
cmp r11, [r9 + 7]
jnz GAO_GPA@2
; Found GetProcAddress
neg rdx
mov r10d, [rax + 18h]
lea rdx, [r10 + rdx]
mov r10d, [rax + 24h]
lea r10, [rcx + r10]
movzx rdx, word [r10 + rdx * 2]
mov r10d, [rax + 1ch]
lea r10, [rcx + r10]
mov r10d, [r10 + rdx * 4]
lea rax, [rcx + r10] ; Function address
jmp GAO_GPA@end
GAO_GPA@2:
add r8, 4
dec rdx
jnz GAO_GPA@1
GAO_GPA@end:
ret
; Strings
s_LoadLibraryA: db "LoadLibraryA", 0
s_GetModuleHandleA: db "GetModuleHandleA", 0
s_GetCommandLineW: db "GetCommandLineW", 0
s_UnityPlayer.dll: db "UnityPlayer.dll", 0
s_UnityMain: db "UnityMain", 0
dllPath:
; This will be filled out by the launcher payload dll
; Path to the dll to inject into the game

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injector/meson.build Normal file
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# Assemble the payload that will be injected into the launcher
inj_payload_bin = asm_gen.process('src/payload.asm')
# Embed it into the library
inj_res_files = custom_target(
'ipayload.[oh]',
output: [ 'ipayload.o', 'ipayload.h' ],
input: [ inj_payload_bin ],
command: [ gen_res, './injector', '@OUTPUT0@', '@OUTPUT1@', '@INPUT@' ]
)
# Main injector exe
executable(
'jadeite',
'src/injector.c',
inj_res_files,
include_directories: 'include',
name_prefix: ''
)
subdir('launcher_payload')

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injector/src/injector.c Normal file
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#include <stdio.h>
#include <injshared.h>
#include <ipayload.h>
const char EXE_ENV[] = "JADEITE_TARGET_EXE_PATH";
const char INJECT_DLL_ENV[] = "JADEITE_INJECT_DLL_PATH";
const char LAUNCHER_INJECT_DLL[] = "launcher_payload.dll";
const char GAME_INJECT_DLL[] = "game_payload.dll";
int main(int argc, char **argv) {
// Read arguments
char *gamePath = NULL;
char *launcherPath = NULL;
switch (argc) {
case 1:
printf("Usage: wine jadeite.exe [game path] <launcher path>\n");
return 0;
case 2:
printf("No launcher process specified! Using explorer.exe\n");
gamePath = argv[1];
launcherPath = "C:\\Windows\\explorer.exe";
break;
case 3:
gamePath = argv[1];
launcherPath = argv[2];
break;
default:
fprintf(stderr, "Too many arguments! (%d)\n", argc);
return 1;
}
// Compute absolute paths
char gameExePath[MAX_PATH];
GetFullPathNameA(gamePath, sizeof(gameExePath), gameExePath, NULL);
char gamePayloadPath[MAX_PATH];
GetFullPathNameA(GAME_INJECT_DLL, sizeof(gamePayloadPath), gamePayloadPath, NULL);
char launcherPayloadPath[MAX_PATH];
GetFullPathNameA(LAUNCHER_INJECT_DLL, sizeof(launcherPayloadPath), launcherPayloadPath, NULL);
printf("Starting \"%s\" via \"%s\"\n", gameExePath, launcherPath);
// Set envvars
SetEnvironmentVariableA(EXE_ENV, gameExePath);
SetEnvironmentVariableA(INJECT_DLL_ENV, gamePayloadPath);
// Start the launcher
STARTUPINFO si;
ZeroMemory(&si, sizeof(si));
PROCESS_INFORMATION pi;
si.cb = sizeof(si);
ZeroMemory(&pi, sizeof(pi));
if (!CreateProcessA(
launcherPath,
NULL,
NULL,
NULL,
FALSE,
CREATE_SUSPENDED,
NULL,
NULL,
&si,
&pi
)) {
fprintf(stderr, "Could not start process! (%ld)\n", GetLastError());
exit(1);
}
printf("Started launcher process (%ld)\n", pi.dwProcessId);
// Inject
void *payloadStart = &_binary_ipayload_o_p_payload_bin_start;
size_t payloadSize = (size_t)&_binary_ipayload_o_p_payload_bin_size; // yes this is valid
inject(pi.hProcess, payloadStart, payloadSize, launcherPayloadPath);
// Resume the process
ResumeThread(pi.hThread);
return 0;
}

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injector/src/payload.asm Normal file
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BITS 64
main: ; Replacement entry point
push rbp
mov rbp, rsp
sub rsp, 10h + 90h
call GetKernel32ModuleHandle
mov [rbp - 8h], rax ; kernel32.dll
mov rcx, rax
call GetAddressOf_GetProcAddress
mov [rbp - 10h], rax ; *GetProcAddress
mov rcx, [rbp - 8h] ; kernel32.dll
lea rdx, [rel s_LoadLibraryA]
mov rax, [rbp - 10h] ; *GetProcAddress
call rax ; rax = *LoadLibraryA
lea rcx, [rel dllPath]
call rax ; LoadLibraryA(dllPath)
add rsp, 10h + 90h
pop rbp
ret
; https://dennisbabkin.com/blog/?t=how-to-implement-getprocaddress-in-shellcode
GetKernel32ModuleHandle:
mov rax, gs:[60h]
mov rax, [rax + 18h]
mov rax, [rax + 20h]
mov rax, [rax]
mov rax, [rax]
mov rax, [rax + 20h]
ret
GetAddressOf_GetProcAddress:
mov eax, [rcx + 3ch]
add rax, rcx
lea rax, [rax + 88h]
mov edx, [rax]
lea rax, [rcx + rdx]
mov edx, [rax + 18h]
mov r8d, [rax + 20h]
lea r8, [rcx + r8]
mov r10, 41636f7250746547h ; "GetProcA"
mov r11, 0073736572646441h ; "Address\0"
GAO_GPA@1:
mov r9d, [r8]
lea r9, [rcx + r9]
; Function name comparision
cmp r10, [r9]
jnz GAO_GPA@2
cmp r11, [r9 + 7]
jnz GAO_GPA@2
; Found GetProcAddress
neg rdx
mov r10d, [rax + 18h]
lea rdx, [r10 + rdx]
mov r10d, [rax + 24h]
lea r10, [rcx + r10]
movzx rdx, word [r10 + rdx * 2]
mov r10d, [rax + 1ch]
lea r10, [rcx + r10]
mov r10d, [r10 + rdx * 4]
lea rax, [rcx + r10] ; Function address
jmp GAO_GPA@end
GAO_GPA@2:
add r8, 4
dec rdx
jnz GAO_GPA@1
GAO_GPA@end:
ret
; Strings
s_LoadLibraryA: db "LoadLibraryA", 0
dllPath:
; This will be filled out by the injector
; Path to the dll to inject into the launcher