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https://git.xeondev.com/LR/C.git
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Release 1.0.14
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xeon
183
src/root.zig
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183
src/root.zig
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@@ -0,0 +1,183 @@
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const std = @import("std");
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const interceptor = @import("interceptor.zig");
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const Il2cpp = @import("Il2cpp.zig");
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const proxy_exports = @import("proxy_exports.zig");
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const windows = std.os.windows;
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const unicode = std.unicode;
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const Io = std.Io;
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const DLL_PROCESS_ATTACH = 1;
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extern "kernel32" fn AllocConsole() callconv(.winapi) void;
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extern "kernel32" fn FreeConsole() callconv(.winapi) void;
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const gameassembly_name = unicode.utf8ToUtf16LeStringLiteral("GameAssembly.dll");
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var base: usize = 0;
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var il2cpp: Il2cpp = undefined;
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pub const std_options: std.Options = .{
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.logFn = colorlessLog,
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};
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fn onAttach() void {
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const log = std.log.scoped(.lr);
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FreeConsole();
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AllocConsole();
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std.debug.print(
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\\ @
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\\ #:@ @@@
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\\ #@::#@ @:@%
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\\ ##@::::@ @=::@%@
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\\ *##@-:::::@ @##::::::::::==@ @@@%::::::@%%@
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\\ @###@=:::@@#::::::::::-@*#%=::@::::::@@%%@
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\\ @#####@==*@@%#########@@@:#*+=::@@@##@%%%@
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\\ %####@%%@#%%#:=:=::#%%%%@@:@#@::@**@%%%@
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\\ *##@%%%@%%:@#@#+**@@@%%:%@#%%%@-:@@%%%%
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\\ @@+*#@:#%%%%:@##@@@@@@#@:%@*%%%%%%%@@%@@*##@@
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\\ @+*##@@@#%#@*@########%%@%%%%%%%@@#@-@##++##@
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\\ @@%#@*##@@#+++***********@%%%@@@*####@#@*+*##@
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\\ @==+@@*##@*++@++++++++++++++*@#%-@**##@=@@*++@@
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\\ @===%+:@##@-****@=++++++++++*#++***@---*##=-@#@##*++*@@@
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\\ **@@@:-@==##%@@@@====+++++**.+++++*@--=*##+-@....@**++@
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\\ @@---=--@#@#@@ #@@......-@@@@@@=..%@:-=##@-=@..@####@
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\\ @--@+--=@+@:@#######@.......@@@@@.@.@+#@:#:--=@@@##@@
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\\ @:----=*@::::#--###@.......@ .###%..++**#@---=@=-@#**@
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\\ @@==@-=@#=@::::::%@@@.........@######@@++***:----===-@#*++@
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\\@===**##*==@::::::....@.........#--##@:@++***#@:----=@###++++@
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\\ @@%#@**=++@::::......@@@@@@....:@+:::::@**###@:---@@@##*++++@
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\\ @++@==++**@:................:::::::@ %**##@*#@@#*# %#**+@
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\\ ++@==++**@@ @@@............:#@ @+***@#*******@
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\\ @++===++**@ @+***###*******@
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\\ @++@===+***#@ ++****#%##******@
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\\ @++++*@%=+**@@ @++***##@###*****@
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\\ @@@@@@@ *++*####%@###**@
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\\ @@@@@##@ @@@
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\\
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, .{});
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var threaded: Io.Threaded = .init_single_threaded;
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defer threaded.deinit();
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const io = threaded.ioBasic();
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log.info("Successfully injected. Waiting for the game startup.", .{});
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while (base == 0) : (base = @intFromPtr(windows.kernel32.GetModuleHandleW(gameassembly_name))) {
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io.sleep(.fromNanoseconds(200 * std.time.ns_per_ms), .awake) catch {};
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} else {
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io.sleep(.fromSeconds(2), .awake) catch {};
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}
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log.info("GameAssembly: {X}", .{base});
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il2cpp = Il2cpp.link(@ptrFromInt(base)) catch |err| {
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log.err("failed to link il2cpp symbols: {t}", .{err});
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return;
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};
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const domain = il2cpp.domain_get();
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const uwr_module = il2cpp.assembly_get_image(il2cpp.domain_assembly_open(domain, "UnityEngine.UnityWebRequestModule.dll").?);
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const web_request_utils = il2cpp.class_from_name(uwr_module, "UnityEngineInternal", "WebRequestUtils").?;
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const unity_web_request = il2cpp.class_from_name(uwr_module, "UnityEngine.Networking", "UnityWebRequest").?;
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const make_initial_url = il2cpp.class_get_method_from_name(web_request_utils, "MakeInitialUrl", 2).?;
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const internal_set_url = il2cpp.class_get_method_from_name(unity_web_request, "InternalSetUrl", 1).?;
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const set_url = il2cpp.class_get_method_from_name(unity_web_request, "set_url", 1).?;
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const gameplay_module = il2cpp.assembly_get_image(il2cpp.domain_assembly_open(domain, "Gameplay.Beyond.dll").?);
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const camera_mono = il2cpp.class_from_name(gameplay_module, "Beyond.Gameplay.View", "CameraMono").?;
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const evaluate_all_touched_entities = il2cpp.class_get_method_from_name(camera_mono, "EvaluateAllTouchedEntities", 0).?;
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WebRequestPatch.init(set_url.address, make_initial_url.address, internal_set_url.address);
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SloppyRSAPatch.init();
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interceptor.write(evaluate_all_touched_entities.address, &.{0xC3}); // Dither
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log.info("Successfully initialized! Time to play Endfield!", .{});
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}
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// Patch out the SRSA (Sloppy RSA)
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const SloppyRSAPatch = struct {
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const write_srsa_check: usize = 0xA20ABFF;
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const read_srsa_check: usize = 0xA20B354;
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pub fn init() void {
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interceptor.write(base + write_srsa_check, &.{ 0x90, 0x90 });
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interceptor.write(base + read_srsa_check, &.{ 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 });
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}
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};
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const WebRequestPatch = struct {
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const log = std.log.scoped(.uwr);
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const https_prefix = "https://";
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var uwrInternalSetUrl: *const fn (uwr: *anyopaque, url: *Il2cpp.String) callconv(.c) void = undefined;
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var makeInitialUrl: *const fn (target: *Il2cpp.String, local: *Il2cpp.String) callconv(.c) *Il2cpp.String = undefined;
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pub fn init(uwr_set_url: usize, make_initial_url: usize, uwr_internal_set_url: usize) void {
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makeInitialUrl = @ptrFromInt(make_initial_url);
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uwrInternalSetUrl = @ptrFromInt(uwr_internal_set_url);
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interceptor.replace(uwr_set_url, onUwrSetUrl);
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}
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fn onUwrSetUrl(uwr: *anyopaque, url_string: *Il2cpp.String) callconv(.c) void {
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var utf8_conversion_buf: [8192]u8 = undefined;
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var replacement_buf: [8192]u8 = undefined;
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const localhost = il2cpp.string_new("http://localhost/");
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const url = url_string.toUtf8(&utf8_conversion_buf) catch |err| {
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log.err("failed to convert URL to utf8: {t}", .{err});
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return uwrInternalSetUrl(uwr, makeInitialUrl(url_string, localhost));
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};
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log.debug("{s}", .{url});
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if (std.mem.startsWith(u8, url, https_prefix)) {
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if (std.mem.findScalar(u8, url[https_prefix.len..], '/')) |i| {
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const replacement = std.fmt.bufPrintSentinel(
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&replacement_buf,
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"{s}/{s}",
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.{ "http://127.0.0.1:10001", url[https_prefix.len + i + 1 ..] },
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0,
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) catch |err| {
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log.err("failed to replace url: {t} (url: {s})", .{ err, url });
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return uwrInternalSetUrl(uwr, makeInitialUrl(url_string, localhost));
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};
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log.debug("replacement: {s}", .{replacement});
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return uwrInternalSetUrl(uwr, makeInitialUrl(il2cpp.string_new(replacement), localhost));
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}
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}
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uwrInternalSetUrl(uwr, makeInitialUrl(url_string, localhost));
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}
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};
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pub export fn DllMain(_: windows.HINSTANCE, reason: windows.DWORD, _: windows.LPVOID) callconv(.winapi) windows.BOOL {
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if (reason == DLL_PROCESS_ATTACH) {
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if (windows.kernel32.LoadLibraryW(unicode.utf8ToUtf16LeStringLiteral("gfsdk_original.dll"))) |lib| {
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proxy_exports.link(lib);
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}
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const thread = std.Thread.spawn(.{}, onAttach, .{}) catch unreachable;
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thread.detach();
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}
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return 1;
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}
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fn colorlessLog(
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comptime level: std.log.Level,
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comptime scope: @EnumLiteral(),
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comptime format: []const u8,
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args: anytype,
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) void {
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var buffer: [64]u8 = undefined;
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var stderr = std.debug.lockStderr(&buffer).terminal();
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defer std.debug.unlockStderr();
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stderr.mode = .no_color;
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return std.log.defaultLogFileTerminal(level, scope, format, args, stderr) catch {};
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}
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