decrypt_self() function

Fixed SPU self decryption
Fixed PSV debug self load

rpcs3/Crypto/unself.cpp

@@ -1038,15 +1038,10 @@ bool SELFDecrypter::DecryptData()
 	return true;
 }
 
-bool SELFDecrypter::MakeElf(const std::string& elf, bool isElf32)
+fs::file SELFDecrypter::MakeElf(bool isElf32)
 {
 	// Create a new ELF file.
-	fs::file e(elf, fs::rewrite);
+	fs::file e = fs::make_stream<std::vector<u8>>();
-	if(!e)
-	{
-		LOG_ERROR(LOADER, "Could not create ELF file! (%s)", elf.c_str());
-		return false;
-	}
 
 	// Set initial offset.
 	u32 data_buf_offset = 0;
@@ -1162,7 +1157,7 @@ bool SELFDecrypter::MakeElf(const std::string& elf, bool isElf32)
 		}
 	}
 
-	return true;
+	return e;
 }
 
 bool SELFDecrypter::GetKeyFromRap(u8 *content_id, u8 *npdrm_key)
@@ -1201,23 +1196,11 @@ bool SELFDecrypter::GetKeyFromRap(u8 *content_id, u8 *npdrm_key)
 	return true;
 }
 
-bool IsSelf(const std::string& path)
+static bool IsSelfElf32(const fs::file& f)
 {
-	fs::file f(path);
-
 	if (!f) return false;
 
-	SceHeader hdr;
+	f.seek(0);
-	hdr.Load(f);
-
-	return hdr.CheckMagic();
-}
-
-bool IsSelfElf32(const std::string& path)
-{
-	fs::file f(path);
-
-	if (!f) return false;
 
 	SceHeader hdr;
 	SelfHeader sh;
@@ -1233,46 +1216,31 @@ bool IsSelfElf32(const std::string& path)
 	return (elf_class[4] == 1);
 }
 
-bool CheckDebugSelf(const std::string& self, const std::string& elf)
+static bool CheckDebugSelf(fs::file& s)
 {
-	// Open the SELF file.
+	if (s.size() < 0x18)
-	fs::file s(self);
-
-	if (!s)
 	{
-		LOG_ERROR(LOADER, "Could not open SELF file! (%s)", self.c_str());
 		return false;
 	}
 
 	// Get the key version.
 	s.seek(0x08);
 
-	u16 key_version;
+	const u16 key_version = s.read<le_t<u16>>();
-	s.read(&key_version, sizeof(key_version));
 
 	// Check for DEBUG version.
-	if (swap16(key_version) == 0x8000)
+	if (key_version == 0x80 || key_version == 0xc0)
 	{
 		LOG_WARNING(LOADER, "Debug SELF detected! Removing fake header...");
 
 		// Get the real elf offset.
 		s.seek(0x10);
 
-		u64 elf_offset;
-		s.read(&elf_offset, sizeof(elf_offset));
-
 		// Start at the real elf offset.
-		elf_offset = swap64(elf_offset);
+		s.seek(key_version == 0x80 ? +s.read<be_t<u64>>() : +s.read<le_t<u64>>());
-
-		s.seek(elf_offset);
 
 		// Write the real ELF file back.
-		fs::file e(elf, fs::rewrite);
+		fs::file e = fs::make_stream<std::vector<u8>>();
-		if (!e)
-		{
-			LOG_ERROR(LOADER, "Could not create ELF file! (%s)", elf.c_str());
-			return false;
-		}
 
 		// Copy the data.
 		char buf[2048];
@@ -1281,6 +1249,7 @@ bool CheckDebugSelf(const std::string& self, const std::string& elf)
 			e.write(buf, size);
 		}
 
+		s = std::move(e);
 		return true;
 	}
 
@@ -1288,53 +1257,43 @@ bool CheckDebugSelf(const std::string& self, const std::string& elf)
 	return false;
 }
 
-bool DecryptSelf(const std::string& elf, const std::string& self)
+extern fs::file decrypt_self(fs::file elf_or_self)
 {
-	LOG_NOTICE(LOADER, "Decrypting %s", self);
+	elf_or_self.seek(0);
 
-	// Check for a debug SELF first.
+	// Check SELF header first. Check for a debug SELF.
-	if (!CheckDebugSelf(self, elf))
+	if (elf_or_self.size() >= 4 && elf_or_self.read<u32>() == "SCE\0"_u32 && !CheckDebugSelf(elf_or_self))
 	{
-		// Set a virtual pointer to the SELF file.
-		fs::file self_vf(self);
-
-		if (!self_vf)
-			return false;
-
 		// Check the ELF file class (32 or 64 bit).
-		bool isElf32 = IsSelfElf32(self);
+		bool isElf32 = IsSelfElf32(elf_or_self);
 
 		// Start the decrypter on this SELF file.
-		SELFDecrypter self_dec(self_vf);
+		SELFDecrypter self_dec(elf_or_self);
 
 		// Load the SELF file headers.
 		if (!self_dec.LoadHeaders(isElf32))
 		{
 			LOG_ERROR(LOADER, "SELF: Failed to load SELF file headers!");
-			return false;
+			return fs::file{};
 		}
 		
 		// Load and decrypt the SELF file metadata.
 		if (!self_dec.LoadMetadata())
 		{
 			LOG_ERROR(LOADER, "SELF: Failed to load SELF file metadata!");
-			return false;
+			return fs::file{};
 		}
 		
 		// Decrypt the SELF file data.
 		if (!self_dec.DecryptData())
 		{
 			LOG_ERROR(LOADER, "SELF: Failed to decrypt SELF file data!");
-			return false;
+			return fs::file{};
 		}
 		
 		// Make a new ELF file from this SELF.
-		if (!self_dec.MakeElf(elf, isElf32))
+		return self_dec.MakeElf(isElf32);
-		{
-			LOG_ERROR(LOADER, "SELF: Failed to make ELF file from SELF!");
-			return false;
-		}
 	}
 
-	return true;
+	return elf_or_self;
 }

rpcs3/Crypto/unself.h

@@ -379,7 +379,7 @@ class SELFDecrypter
 
 public:
 	SELFDecrypter(const fs::file& s);
-	bool MakeElf(const std::string& elf, bool isElf32);
+	fs::file MakeElf(bool isElf32);
 	bool LoadHeaders(bool isElf32);
 	void ShowHeaders(bool isElf32);
 	bool LoadMetadata();
@@ -388,7 +388,4 @@ public:
 	bool GetKeyFromRap(u8 *content_id, u8 *npdrm_key);
 };
 
-extern bool IsSelf(const std::string& path);
+extern fs::file decrypt_self(fs::file elf_or_self);
-extern bool IsSelfElf32(const std::string& path);
-extern bool CheckDebugSelf(const std::string& self, const std::string& elf);
-extern bool DecryptSelf(const std::string& elf, const std::string& self);

rpcs3/Emu/Cell/Modules/sys_spu_.cpp

@@ -67,25 +67,16 @@ s32 sys_raw_spu_load(s32 id, vm::cptr<char> path, vm::ptr<u32> entry)
 {
 	sysPrxForUser.warning("sys_raw_spu_load(id=%d, path=%s, entry=*0x%x)", id, path, entry);
 
-	const fs::file f(vfs::get(path.get_ptr()));
+	const fs::file elf_file = decrypt_self(fs::file(vfs::get(path.get_ptr())));
-	if (!f)
+
+	if (!elf_file)
 	{
 		sysPrxForUser.error("sys_raw_spu_load() error: %s not found!", path);
 		return CELL_ENOENT;
 	}
 
-	SceHeader hdr;
-	hdr.Load(f);
-
-	if (hdr.CheckMagic())
-	{
-		fmt::throw_exception("sys_raw_spu_load() error: %s is encrypted! Try to decrypt it manually and try again.", path);
-	}
-
-	f.seek(0);
-
 	u32 _entry;
-	LoadSpuImage(f, _entry, RAW_SPU_BASE_ADDR + RAW_SPU_OFFSET * id);
+	LoadSpuImage(elf_file, _entry, RAW_SPU_BASE_ADDR + RAW_SPU_OFFSET * id);
 
 	*entry = _entry | 1;
 

rpcs3/Emu/Cell/PPUModule.cpp

@@ -2,6 +2,7 @@
 #include "Utilities/Config.h"
 #include "Utilities/AutoPause.h"
 #include "Crypto/sha1.h"
+#include "Crypto/unself.h"
 #include "Loader/ELF.h"
 #include "Emu/System.h"
 #include "Emu/IdManager.h"
@@ -1120,7 +1121,7 @@ void ppu_load_exec(const ppu_exec_object& elf)
 
 	if (g_cfg_load_liblv2)
 	{
-		const ppu_prx_object obj = fs::file(lle_dir + "/liblv2.sprx");
+		const ppu_prx_object obj = decrypt_self(fs::file(lle_dir + "/liblv2.sprx"));
 
 		if (obj == elf_error::ok)
 		{
@@ -1135,7 +1136,7 @@ void ppu_load_exec(const ppu_exec_object& elf)
 	{
 		for (const auto& name : g_cfg_load_libs.get_set())
 		{
-			const ppu_prx_object obj = fs::file(lle_dir + '/' + name);
+			const ppu_prx_object obj = decrypt_self(fs::file(lle_dir + '/' + name));
 
 			if (obj == elf_error::ok)
 			{

rpcs3/Emu/Cell/lv2/sys_prx.cpp

@@ -18,7 +18,7 @@ s32 prx_load_module(std::string path, u64 flags, vm::ptr<sys_prx_load_module_opt
 {
 	sys_prx.warning("prx_load_module(path='%s', flags=0x%llx, pOpt=*0x%x)", path.c_str(), flags, pOpt);
 
-	const ppu_prx_object obj = fs::file(vfs::get(path));
+	const ppu_prx_object obj = decrypt_self(fs::file(vfs::get(path)));
 
 	if (obj != elf_error::ok)
 	{

rpcs3/Emu/Cell/lv2/sys_spu.cpp

@@ -60,25 +60,16 @@ error_code sys_spu_image_open(vm::ptr<sys_spu_image_t> img, vm::cptr<char> path)
 {
 	sys_spu.warning("sys_spu_image_open(img=*0x%x, path=%s)", img, path);
 
-	const fs::file f(vfs::get(path.get_ptr()));
+	const fs::file elf_file = decrypt_self(fs::file(vfs::get(path.get_ptr())));
-	if (!f)
+
+	if (!elf_file)
 	{
 		sys_spu.error("sys_spu_image_open() error: %s not found!", path);
 		return CELL_ENOENT;
 	}
 
-	SceHeader hdr;
-	hdr.Load(f);
-
-	if (hdr.CheckMagic())
-	{
-		fmt::throw_exception("sys_spu_image_open() error: %s is encrypted! Try to decrypt it manually and try again.", path);
-	}
-
-	f.seek(0);
-
 	u32 entry;
-	u32 offset = LoadSpuImage(f, entry);
+	u32 offset = LoadSpuImage(elf_file, entry);
 
 	img->type = SYS_SPU_IMAGE_TYPE_USER;
 	img->entry_point = entry;

rpcs3/Emu/System.cpp

@@ -84,6 +84,8 @@ void Emulator::Init()
 
 	// Reload global configuration
 	cfg::root.from_string(fs::file(fs::get_config_dir() + "/config.yml", fs::read + fs::create).to_string());
+
+	SetCPUThreadStop(0);
 }
 
 void Emulator::SetPath(const std::string& path, const std::string& elf_path)
@@ -152,44 +154,55 @@ void Emulator::Load()
 	{
 		Init();
 
-		if (!fs::is_file(m_path))
+		// Open SELF or ELF
+		fs::file elf_file(m_path);
+
+		LOG_NOTICE(LOADER, "Path: %s", m_path);
+
+		if (!elf_file)
 		{
-			LOG_ERROR(LOADER, "File not found: %s", m_path);
+			LOG_ERROR(LOADER, "Failed to open file: %s", m_path);
 			return;
 		}
 
 		const std::string& elf_dir = fs::get_parent_dir(m_path);
 
-		if (IsSelf(m_path))
+		// Check SELF header
+		if (elf_file.size() >= 4 && elf_file.read<u32>() == "SCE\0"_u32)
 		{
+			// Decrypt SELF
+			elf_file = decrypt_self(std::move(elf_file));
+
 			const std::size_t elf_ext_pos = m_path.find_last_of('.');
 			const std::string& elf_ext = fmt::to_upper(m_path.substr(elf_ext_pos != -1 ? elf_ext_pos : m_path.size()));
 			const std::string& elf_name = m_path.substr(elf_dir.size());
 
+			// Save ELF (TODO: configuration, cache and different file location)
+			std::string new_path = m_path;
+
 			if (elf_name.compare(elf_name.find_last_of("/\\", -1, 2) + 1, 9, "EBOOT.BIN", 9) == 0)
 			{
-				m_path.erase(m_path.size() - 9, 1); // change EBOOT.BIN to BOOT.BIN
+				new_path.erase(new_path.size() - 9, 1); // change EBOOT.BIN to BOOT.BIN
 			}
 			else if (elf_ext == ".SELF" || elf_ext == ".SPRX")
 			{
-				m_path.erase(m_path.size() - 4, 1); // change *.self to *.elf, *.sprx to *.prx
+				new_path.erase(new_path.size() - 4, 1); // change *.self to *.elf, *.sprx to *.prx
 			}
 			else
 			{
-				m_path += ".decrypted.elf";
+				new_path += ".decrypted.elf";
 			}
 
-			if (!DecryptSelf(m_path, elf_dir + elf_name))
+			if (fs::file elf_out{new_path, fs::rewrite})
 			{
-				LOG_ERROR(LOADER, "Failed to decrypt %s", elf_dir + elf_name);
+				elf_out.write(elf_file.to_vector<u8>());
-				return;
+			}
+			else
+			{
+				LOG_ERROR(LOADER, "Failed to save file: %s", new_path);
 			}
 		}
 
-		SetCPUThreadStop(0);
-
-		LOG_NOTICE(LOADER, "Path: %s", m_path);
-
 		// Load custom config
 		if (fs::file cfg_file{ m_path + ".yml" })
 		{
@@ -197,7 +210,6 @@ void Emulator::Load()
 			cfg::root.from_string(cfg_file.to_string());
 		}
 
-		const fs::file elf_file(m_path);
 		ppu_exec_object ppu_exec;
 		ppu_prx_object ppu_prx;
 		spu_exec_object spu_exec;
@@ -205,7 +217,7 @@ void Emulator::Load()
 
 		if (!elf_file)
 		{
-			LOG_ERROR(LOADER, "Failed to open %s", m_path);
+			LOG_ERROR(LOADER, "Failed to decrypt SELF: %s", m_path);
 			return;
 		}
 		else if (ppu_exec.open(elf_file) == elf_error::ok)

rpcs3/Gui/MainFrame.cpp

@@ -374,19 +374,30 @@ void MainFrame::DecryptSPRXLibraries(wxCommandEvent& WXUNUSED(event))
 		std::string prx_path = fmt::ToUTF8(module);
 		const std::string& prx_dir = fs::get_parent_dir(prx_path);
 
-		if (IsSelf(prx_path))
+		fs::file elf_file(prx_path);
+
+		if (elf_file && elf_file.size() >= 4 && elf_file.read<u32>() == "SCE\0"_u32)
 		{
 			const std::size_t prx_ext_pos = prx_path.find_last_of('.');
 			const std::string& prx_ext = fmt::to_upper(prx_path.substr(prx_ext_pos != -1 ? prx_ext_pos : prx_path.size()));
 			const std::string& prx_name = prx_path.substr(prx_dir.size());
 
+			elf_file = decrypt_self(std::move(elf_file));
+
 			prx_path.erase(prx_path.size() - 4, 1); // change *.sprx to *.prx
 
-			if (DecryptSelf(prx_path, prx_dir + prx_name))
+			if (elf_file)
 			{
-				LOG_SUCCESS(GENERAL, "Decrypted %s", prx_dir + prx_name);
+				if (fs::file new_file{prx_path, fs::rewrite})
+				{
+					new_file.write(elf_file.to_string());
+					LOG_SUCCESS(GENERAL, "Decrypted %s", prx_dir + prx_name);
+				}
+				else
+				{
+					LOG_ERROR(GENERAL, "Failed to create %s", prx_path);
+				}				
 			}
-
 			else
 			{
 				LOG_ERROR(GENERAL, "Failed to decrypt %s", prx_dir + prx_name);

rpcs3/Gui/SettingsDialog.cpp

@@ -1,6 +1,7 @@
 #include "stdafx.h"
 #include "stdafx_gui.h"
 #include "Utilities/Config.h"
+#include "Crypto/unself.h"
 #include "Loader/ELF.h"
 #include "Emu/System.h"
 
@@ -340,7 +341,7 @@ SettingsDialog::SettingsDialog(wxWindow* parent)
 		for (const auto& prxf : fs::dir(lle_dir))
 		{
 			// List found unselected modules
-			if (!prxf.is_directory && ppu_prx_object(fs::file(lle_dir + prxf.name)) == elf_error::ok && !set.count(prxf.name))
+			if (!prxf.is_directory && ppu_prx_object(decrypt_self(fs::file(lle_dir + prxf.name))) == elf_error::ok && !set.count(prxf.name))
 			{
 				lle_module_list_unselected.push_back(prxf.name);
 			}