Alien Isolation PS4 csum fix

Update build-win.yml

Update README.md

.github/workflows/build-win.yml

@@ -43,7 +43,7 @@ jobs:
           make
           # add .exe extension to binaries
           mv alien-checksum-fixer/alien-checksum-fixer alien-checksum-fixer.exe
-          mv castlevania-checksum-fixer/cod-checksum-fixer castlevania-checksum-fixer.exe
+          mv castlevania-checksum-fixer/castlevania-checksum-fixer castlevania-checksum-fixer.exe
           mv cod-blackops-decrypter/cod-blackops-decrypter cod-blackops-decrypter.exe
           mv cod-checksum-fixer/cod-checksum-fixer cod-checksum-fixer.exe
           mv dbz-checksum-fixer/dbz-checksum-fixer dbz-checksum-fixer.exe

README.md

@@ -61,7 +61,10 @@ Tools to decrypt specific PS4 save-games:
 
 Tools to fix checksums for specific PS3 save-games:
 - [alien-checksum-fixer](./alien-checksum-fixer)
-  - Alien: Isolation
+  - Alien: Isolation (PS3/PS4)
+- [castlevania-checksum-fixer](./castlevania-checksum-fixer)
+  - Castlevania: Lords of Shadow
+  - Castlevania: Lords of Shadow 2
 - [cod-checksum-fixer](./cod-checksum-fixer)
   - Call of Duty: Ghosts
 - [deadspace-checksum-fixer](./deadspace-checksum-fixer)

alien-checksum-fixer/main.c

@@ -1,6 +1,6 @@
 /*
 *
-*	Alien: Isolation (PS3) Checksum Fixer - (c) 2021 by Bucanero - www.bucanero.com.ar
+*	Alien: Isolation (PS3/PS4) Checksum Fixer - (c) 2021 by Bucanero - www.bucanero.com.ar
 *
 * This tool is based on the "Security Archive" notes by Philymaster (https://community.wemod.com/t/philymasters-security-archive/3923)
 *
@@ -32,7 +32,7 @@ int main(int argc, char **argv)
 	u64 csum;
 	char *opt, *bak;
 
-	printf("\nAlien: Isolation (PS3) checksum fixer 0.1.0 - (c) 2021 by Bucanero\n\n");
+	printf("\nAlien: Isolation (PS3/PS4) checksum fixer 0.2.0 - (c) 2021 by Bucanero\n\n");
 
 	if (--argc < 1)
 	{
@@ -48,8 +48,18 @@ int main(int argc, char **argv)
 	// Save a file backup
 	asprintf(&bak, "%s.bak", argv[1]);
 	write_buffer(bak, data, len);
-
-	csum = ES32(*(u32*)(data + 0x18)) + ES32(*(u32*)(data + 0x1C)) - 0x20;
+
+	// detect PS4 save
+	if (memcmp(data, "IAAC", 4) == 0)
+		csum = (*(u32*)(data + 0x18)) + (*(u32*)(data + 0x1C)) - 0x20;
+	// detect PS3 save
+	else if (memcmp(data, "CAAI", 4) == 0)
+		csum = ES32(*(u32*)(data + 0x18)) + ES32(*(u32*)(data + 0x1C)) - 0x20;
+	else
+	{
+		printf("[X] This is not an Alien Isolation save file! (%s)\n", argv[1]);
+		return -1;
+	}
 
 	printf("[*] Checksum Size   : %llu bytes\n", csum);
 	printf("[*] Stored Checksum : %016llX\n", ES64(*(u64*)(data+8)));