More arxan patches
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momo5502
parent
cda5d668ad
commit
0a841e2f49
@ -362,22 +362,25 @@ namespace arxan
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uint64_t get_integrity_data_qword(const uint8_t* address)
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{
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OutputDebugStringA(utils::string::va("8 bytes -> %p", address));
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const auto og_data = utils::hook::query_original_data(address, 8);
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return *reinterpret_cast<const uint64_t*>(og_data.data());
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}
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uint32_t get_integrity_data_dword(const uint8_t* address)
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{
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OutputDebugStringA(utils::string::va("4 bytes -> %p", address));
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const auto og_data = utils::hook::query_original_data(address, 4);
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return *reinterpret_cast<const uint32_t*>(og_data.data());
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}
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uint8_t get_integrity_data_byte(const uint8_t* address)
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{
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OutputDebugStringA(utils::string::va("1 bytes -> %p", address));
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const auto og_data = utils::hook::query_original_data(address, 1);
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return og_data[0];
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}
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void patch_check_type_1_direct()
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{
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auto patch_addr = [](uint8_t* addr)
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@ -414,7 +417,7 @@ namespace arxan
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// mov [rbp+??h], eax
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auto checks = "8B 00 89 45 ??"_sig;
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for(size_t i = 0; i < checks.count(); ++i)
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for (size_t i = 0; i < checks.count(); ++i)
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{
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auto* addr = checks.get(i);
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patch_addr(addr);
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@ -443,7 +446,7 @@ namespace arxan
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a.mov(rcx, rax);
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if(rex_prefixed)
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if (rex_prefixed)
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{
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a.call_aligned(get_integrity_data_dword);
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@ -465,7 +468,7 @@ namespace arxan
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// mov rax, [rax]; jmp ...
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auto checks = "48 8B 00 E9"_sig;
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for(size_t i = 0; i < checks.count(); ++i)
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for (size_t i = 0; i < checks.count(); ++i)
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{
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auto* addr = checks.get(i);
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patch_addr(addr);
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@ -480,9 +483,9 @@ namespace arxan
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}
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}
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void patch_check_type_2()
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void patch_check_type_2_direct()
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{
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const auto checks = "0F B6 00 0F B6 C0 33 45 50 89 45 50"_sig;
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const auto checks = "0F B6 00 0F B6 C0"_sig;
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for (size_t i = 0; i < checks.count(); ++i)
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{
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auto* addr = checks.get(i);
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@ -508,7 +511,35 @@ namespace arxan
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}
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}
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void patch_check_type_4()
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void patch_check_type_2_indirect()
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{
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const auto checks = "0F B6 00 E9"_sig;
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for (size_t i = 0; i < checks.count(); ++i)
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{
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auto* addr = checks.get(i);
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const auto jump_target = utils::hook::follow_branch(addr + 3);
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utils::hook::jump(addr, utils::hook::assemble([addr, jump_target](utils::hook::assembler& a)
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{
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a.push(rax);
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a.pushad64();
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a.mov(rcx, rax);
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a.call_aligned(get_integrity_data_byte);
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a.mov(rcx, qword_ptr(rsp, 128));
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a.movzx(ecx, al);
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a.mov(qword_ptr(rsp, 128), rcx);
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a.popad64();
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a.pop(rax);
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a.jmp(jump_target);
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}));
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}
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}
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void patch_check_type_4_direct()
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{
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const auto checks = "48 8B 04 10 48 89 45 20"_sig;
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for (size_t i = 0; i < checks.count(); ++i)
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@ -534,7 +565,33 @@ namespace arxan
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}
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}
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void patch_check_type_5()
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void patch_check_type_4_indirect()
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{
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const auto checks = "48 8B 04 10 E9"_sig;
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for (size_t i = 0; i < checks.count(); ++i)
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{
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auto* addr = checks.get(i);
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const auto jump_target = utils::hook::follow_branch(addr + 4);
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utils::hook::jump(addr, utils::hook::assemble([addr, jump_target](utils::hook::assembler& a)
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{
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a.mov(rax, qword_ptr(rax, rdx));
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a.push(rax);
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a.pushad64();
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a.mov(rcx, rax);
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a.call_aligned(get_integrity_data_qword);
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a.mov(qword_ptr(rsp, 128), rax);
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a.popad64();
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a.pop(rax);
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a.jmp(jump_target);
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}));
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}
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}
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void patch_check_type_5_direct()
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{
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const auto checks = "0F B6 00 88 02"_sig;
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for (size_t i = 0; i < checks.count(); ++i)
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@ -543,7 +600,7 @@ namespace arxan
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// Skip false positives
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// Prefixed 0x41 encodes a different instruction
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if(addr[-1] == 0x41)
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if (addr[-1] == 0x41)
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{
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continue;
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}
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@ -569,6 +626,43 @@ namespace arxan
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}
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}
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void patch_check_type_5_indirect()
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{
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const auto checks = "0F B6 00 E9"_sig;
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for (size_t i = 0; i < checks.count(); ++i)
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{
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auto* addr = checks.get(i);
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// Skip false positives
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// Prefixed 0x41 encodes a different instruction
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if (addr[-1] == 0x41)
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{
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continue;
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}
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const auto jump_target = utils::hook::follow_branch(addr + 4);
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utils::hook::jump(addr, utils::hook::assemble([addr, jump_target](utils::hook::assembler& a)
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{
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a.push(rax);
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a.pushad64();
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a.mov(rcx, rax);
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a.call_aligned(get_integrity_data_byte);
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a.mov(rcx, qword_ptr(rsp, 128));
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a.movzx(ecx, al);
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a.mov(qword_ptr(rsp, 128), rcx);
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a.popad64();
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a.pop(rax);
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a.jmp(jump_target);
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}));
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}
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}
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class component final : public component_interface
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{
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public:
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@ -608,13 +702,15 @@ namespace arxan
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void post_unpack() override
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{
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/*
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patch_check_type_1_direct();
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patch_check_type_1_indirect();
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patch_check_type_2();
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patch_check_type_4();
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patch_check_type_5();
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*/
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patch_check_type_2_direct();
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patch_check_type_2_indirect();
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patch_check_type_4_direct();
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patch_check_type_4_indirect();
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patch_check_type_5_direct();
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patch_check_type_5_indirect();
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MessageBoxA(0, "done", 0, 0);
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}
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void pre_destroy() override
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@ -16,11 +16,11 @@ namespace splash
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void enable_dpi_awareness()
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{
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const utils::nt::library user32{ "user32.dll" };
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const utils::nt::library user32{"user32.dll"};
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const auto set_dpi = user32
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? user32.get_proc<BOOL(WINAPI*)(DPI_AWARENESS_CONTEXT)>(
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"SetProcessDpiAwarenessContext")
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: nullptr;
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? user32.get_proc<BOOL(WINAPI*)(DPI_AWARENESS_CONTEXT)>(
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"SetProcessDpiAwarenessContext")
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: nullptr;
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if (set_dpi)
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{
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set_dpi(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
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@ -40,15 +40,7 @@ namespace splash
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void pre_start() override
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{
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if(this->window_)
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{
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MSG msg{};
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while (PeekMessageW(&msg, nullptr, NULL, NULL, PM_REMOVE))
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{
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TranslateMessage(&msg);
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DispatchMessageW(&msg);
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}
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}
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this->draw_frame();
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}
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void pre_destroy() override
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@ -81,6 +73,16 @@ namespace splash
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HWND window_{};
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HANDLE image_{};
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void draw_frame() const
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{
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MSG msg{};
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while (this->window_ && PeekMessageW(&msg, nullptr, NULL, NULL, PM_REMOVE))
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{
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TranslateMessage(&msg);
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DispatchMessageW(&msg);
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}
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}
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void destroy() const
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{
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if (this->window_ && IsWindow(this->window_))
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@ -144,7 +146,9 @@ namespace splash
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SetWindowPos(this->window_, nullptr, rect.left, rect.top, rect.right - rect.left,
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rect.bottom - rect.top, SWP_NOZORDER);
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SetWindowRgn(this->window_, CreateRoundRectRgn(0, 0, rect.right - rect.left, rect.bottom - rect.top, 15, 15), TRUE);
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SetWindowRgn(this->window_,
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CreateRoundRectRgn(0, 0, rect.right - rect.left, rect.bottom - rect.top, 15,
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15), TRUE);
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ShowWindow(this->window_, SW_SHOW);
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UpdateWindow(this->window_);
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