Formatting
This commit is contained in:
parent
e761a12d8c
commit
92312dcf2f
@ -434,8 +434,12 @@ namespace arxan
|
||||
return false;
|
||||
}
|
||||
|
||||
bool ignore = false;
|
||||
|
||||
void protect_texts()
|
||||
{
|
||||
if(ignore) return;
|
||||
|
||||
const auto& texts = get_text_sections();
|
||||
for (const auto& text : texts)
|
||||
{
|
||||
@ -517,134 +521,134 @@ namespace arxan
|
||||
}
|
||||
|
||||
|
||||
uint32_t adjust_integrity_checksum(const uint64_t return_address, uint8_t* stack_frame, bool type)
|
||||
{
|
||||
if(type)
|
||||
uint32_t adjust_integrity_checksum(const uint64_t return_address, uint8_t* stack_frame, bool type)
|
||||
{
|
||||
if (type)
|
||||
{
|
||||
OutputDebugStringA("Type1");
|
||||
}else
|
||||
{
|
||||
OutputDebugStringA("Type2");
|
||||
OutputDebugStringA("Type1");
|
||||
}
|
||||
// MessageBoxA(0, "III", 0, 0);
|
||||
const auto handler_address = return_address - 5;
|
||||
const auto handler = integrity_handlers.at(handler_address);
|
||||
|
||||
const auto* context = reinterpret_cast<integrity_handler_context*>(stack_frame + handler.frame_offset);
|
||||
|
||||
if (*context->computed_checksum != *context->original_checksum)
|
||||
{
|
||||
OutputDebugStringA("Patching checksum :3");
|
||||
}
|
||||
else
|
||||
{
|
||||
OutputDebugStringA("Not patching");
|
||||
}
|
||||
|
||||
*context->computed_checksum = *context->original_checksum;
|
||||
return *context->original_checksum;
|
||||
}
|
||||
|
||||
void patch_integrity_check(const integrity_handler_data& handler)
|
||||
{
|
||||
|
||||
OutputDebugStringA(utils::string::va("Patching: %llX", handler.address));
|
||||
|
||||
const auto game_address = operator"" _g(handler.address);
|
||||
constexpr auto inst_len = 3; // mov [rdx+rcx*4], eax
|
||||
|
||||
const auto next_inst_addr = game_address + inst_len;
|
||||
const auto next_inst = *reinterpret_cast<uint32_t*>(next_inst_addr);
|
||||
|
||||
// Basicblock is intact
|
||||
if ((next_inst & 0xFF00FFFF) == 0xFF004583)
|
||||
{
|
||||
const uint8_t other_frame_offset = next_inst >> 16;
|
||||
static const auto stub = utils::hook::assemble([](utils::hook::assembler& a)
|
||||
else
|
||||
{
|
||||
a.mov(rax, qword_ptr(rsp));
|
||||
a.sub(rax, 2); // Skip the push we inserted
|
||||
OutputDebugStringA("Type2");
|
||||
}
|
||||
// MessageBoxA(0, "III", 0, 0);
|
||||
const auto handler_address = return_address - 5;
|
||||
const auto handler = integrity_handlers.at(handler_address);
|
||||
|
||||
a.push(rax);
|
||||
a.pushad64();
|
||||
const auto* context = reinterpret_cast<integrity_handler_context*>(stack_frame + handler.frame_offset);
|
||||
|
||||
a.mov(r8, 0);
|
||||
a.mov(rcx, rax);
|
||||
a.mov(rdx, rbp);
|
||||
a.call_aligned(adjust_integrity_checksum);
|
||||
|
||||
a.mov(qword_ptr(rsp, 0x80), rax);
|
||||
|
||||
a.popad64();
|
||||
a.pop(rax);
|
||||
|
||||
a.mov(dword_ptr(rdx, rcx, 4), eax);
|
||||
|
||||
a.pop(rax); // return addr
|
||||
a.xchg(rax, qword_ptr(rsp)); // switch with push
|
||||
|
||||
a.add(dword_ptr(rbp, rax), 0xFFFFFFFF);
|
||||
|
||||
a.mov(rax, dword_ptr(rdx, rcx, 4)); // restore rax
|
||||
|
||||
a.ret();
|
||||
});
|
||||
|
||||
utils::hook::set<uint16_t>(game_address, 0x6A | (other_frame_offset << 8)); // push other_frame_offset
|
||||
utils::hook::call(game_address + 2, stub);
|
||||
}
|
||||
else if (*(uint8_t*)next_inst_addr == 0xE9)
|
||||
{
|
||||
const auto jump_target = utils::hook::extract<void*>(reinterpret_cast<void*>(next_inst_addr + 1));
|
||||
const auto stub = utils::hook::assemble([jump_target](utils::hook::assembler& a)
|
||||
if (*context->computed_checksum != *context->original_checksum)
|
||||
{
|
||||
a.mov(rax, qword_ptr(rsp));
|
||||
OutputDebugStringA("Patching checksum :3");
|
||||
}
|
||||
else
|
||||
{
|
||||
OutputDebugStringA("Not patching");
|
||||
}
|
||||
|
||||
a.push(rax);
|
||||
a.pushad64();
|
||||
|
||||
a.mov(r8, 1);
|
||||
a.mov(rcx, rax);
|
||||
a.mov(rdx, rbp);
|
||||
a.call_aligned(adjust_integrity_checksum);
|
||||
|
||||
a.mov(qword_ptr(rsp, 0x80), rax);
|
||||
|
||||
a.popad64();
|
||||
a.pop(rax);
|
||||
|
||||
a.mov(dword_ptr(rdx, rcx, 4), eax);
|
||||
|
||||
a.add(rsp, 8);
|
||||
|
||||
a.jmp(jump_target);
|
||||
});
|
||||
|
||||
utils::hook::call(game_address, stub);
|
||||
*context->computed_checksum = *context->original_checksum;
|
||||
return *context->original_checksum;
|
||||
}
|
||||
else
|
||||
|
||||
void patch_integrity_check(const integrity_handler_data& handler)
|
||||
{
|
||||
OutputDebugStringA(utils::string::va("Unknown :( %llX", game_address));
|
||||
}
|
||||
OutputDebugStringA(utils::string::va("Patching: %llX", handler.address));
|
||||
|
||||
const auto game_address = operator"" _g(handler.address);
|
||||
constexpr auto inst_len = 3; // mov [rdx+rcx*4], eax
|
||||
|
||||
const auto next_inst_addr = game_address + inst_len;
|
||||
const auto next_inst = *reinterpret_cast<uint32_t*>(next_inst_addr);
|
||||
|
||||
// Basicblock is intact
|
||||
if ((next_inst & 0xFF00FFFF) == 0xFF004583)
|
||||
{
|
||||
const uint8_t other_frame_offset = next_inst >> 16;
|
||||
static const auto stub = utils::hook::assemble([](utils::hook::assembler& a)
|
||||
{
|
||||
a.mov(rax, qword_ptr(rsp));
|
||||
a.sub(rax, 2); // Skip the push we inserted
|
||||
|
||||
a.push(rax);
|
||||
a.pushad64();
|
||||
|
||||
a.mov(r8, 0);
|
||||
a.mov(rcx, rax);
|
||||
a.mov(rdx, rbp);
|
||||
a.call_aligned(adjust_integrity_checksum);
|
||||
|
||||
a.mov(qword_ptr(rsp, 0x80), rax);
|
||||
|
||||
a.popad64();
|
||||
a.pop(rax);
|
||||
|
||||
a.mov(dword_ptr(rdx, rcx, 4), eax);
|
||||
|
||||
a.pop(rax); // return addr
|
||||
a.xchg(rax, qword_ptr(rsp)); // switch with push
|
||||
|
||||
a.add(dword_ptr(rbp, rax), 0xFFFFFFFF);
|
||||
|
||||
a.mov(rax, dword_ptr(rdx, rcx, 4)); // restore rax
|
||||
|
||||
a.ret();
|
||||
});
|
||||
|
||||
utils::hook::set<uint16_t>(game_address, 0x6A | (other_frame_offset << 8)); // push other_frame_offset
|
||||
utils::hook::call(game_address + 2, stub);
|
||||
}
|
||||
else if (*(uint8_t*)next_inst_addr == 0xE9)
|
||||
{
|
||||
const auto jump_target = utils::hook::extract<void*>(reinterpret_cast<void*>(next_inst_addr + 1));
|
||||
const auto stub = utils::hook::assemble([jump_target](utils::hook::assembler& a)
|
||||
{
|
||||
a.mov(rax, qword_ptr(rsp));
|
||||
|
||||
a.push(rax);
|
||||
a.pushad64();
|
||||
|
||||
a.mov(r8, 1);
|
||||
a.mov(rcx, rax);
|
||||
a.mov(rdx, rbp);
|
||||
a.call_aligned(adjust_integrity_checksum);
|
||||
|
||||
a.mov(qword_ptr(rsp, 0x80), rax);
|
||||
|
||||
a.popad64();
|
||||
a.pop(rax);
|
||||
|
||||
a.mov(dword_ptr(rdx, rcx, 4), eax);
|
||||
|
||||
a.add(rsp, 8);
|
||||
|
||||
a.jmp(jump_target);
|
||||
});
|
||||
|
||||
utils::hook::call(game_address, stub);
|
||||
}
|
||||
else
|
||||
{
|
||||
OutputDebugStringA(utils::string::va("Unknown :( %llX", game_address));
|
||||
}
|
||||
|
||||
OutputDebugStringA(utils::string::va("Patching done: %llX", handler.address));
|
||||
}
|
||||
|
||||
void patch_integrity_checks()
|
||||
{
|
||||
load_handlers();
|
||||
|
||||
//utils::thread::suspend_other_threads();
|
||||
|
||||
for (const auto& handler : integrity_handlers)
|
||||
{
|
||||
patch_integrity_check(handler.second);
|
||||
// break;
|
||||
}
|
||||
|
||||
OutputDebugStringA("Done patching");
|
||||
//utils::thread::resume_other_threads();
|
||||
}
|
||||
void patch_integrity_checks()
|
||||
{
|
||||
load_handlers();
|
||||
|
||||
//utils::thread::suspend_other_threads();
|
||||
|
||||
for (const auto& handler : integrity_handlers)
|
||||
{
|
||||
patch_integrity_check(handler.second);
|
||||
// break;
|
||||
}
|
||||
|
||||
OutputDebugStringA("Done patching");
|
||||
//utils::thread::resume_other_threads();
|
||||
}
|
||||
|
||||
LONG WINAPI exception_filter(const LPEXCEPTION_POINTERS info)
|
||||
{
|
||||
@ -909,7 +913,7 @@ namespace arxan
|
||||
const auto old = info->ContextRecord->Rax;
|
||||
|
||||
auto h = (integrity_handler_context*)(info->ContextRecord->Rbp + handler->second.frame_offset);
|
||||
|
||||
|
||||
*h->computed_checksum = *h->original_checksum;
|
||||
info->ContextRecord->Rax = *h->original_checksum;
|
||||
|
||||
@ -1085,11 +1089,22 @@ namespace arxan
|
||||
MessageBoxA(0, "done", 0, 0);
|
||||
*/
|
||||
|
||||
|
||||
std::thread([]()
|
||||
{
|
||||
MessageBoxA(0, 0, 0, 0);
|
||||
protect_texts();
|
||||
protect_texts();
|
||||
patch_integrity_checks();
|
||||
|
||||
while (true)
|
||||
{
|
||||
MessageBoxA(0, "Remove guard", 0, 0);
|
||||
ignore = true;
|
||||
unprotect_texts();
|
||||
MessageBoxA(0, "Apply guard", 0, 0);
|
||||
ignore = false;
|
||||
protect_texts();
|
||||
}
|
||||
//verify_handlers();
|
||||
/*utils::hook::set<uint8_t>(0x1423339C0_g, 0xC3);
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user