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September 23, 2024 11:21
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BuildEssentialsBackup() GM9 script
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| # essential.exefs builder script by thepikachugamer (Naim2000) | |
| # version 1.0 | |
| # Last modified: 2024/09/22 17:05 PM | |
| # Can I add an RSA signature here? Can we maybe make some directives so GM9 can show a nice name in the Scripts menu? | |
| set EXEFS 9:/essential.exefs | |
| fdummy $[EXEFS] 2200 | |
| fill $[EXEFS] 00 | |
| # Section I - Finding the files | |
| find S:/nand_hdr.bin NAND_HDR | |
| find M:/nand_cid.mem NAND_CID | |
| find M:/otp.mem OTP | |
| find 1:/private/movable.sed MOVABLE | |
| find 1:/ro/sys/HWCAL0.dat HWCAL0 | |
| find 1:/ro/sys/HWCAL1.dat HWCAL1 | |
| if not find 1:/rw/sys/SecureInfo_A SECINFO | |
| find 1:/rw/sys/SecureInfo_B SECINFO | |
| echo "You have a SecureInfo_B? Weird but okay." | |
| end | |
| if not find 1:/rw/sys/LocalFriendCodeSeed_B FRNDSEED | |
| find 1:/rw/sys/LocalFriendCodeSeed_A FRNDSEED | |
| echo "You have a LocalFriendCodeSeed_A? Weird but okay." | |
| end | |
| # Section II - Constructing EXEFS file headers | |
| # File 1: nand_hdr | |
| # Offset: 0x000 | |
| # Size: 0x200 | |
| fset $[EXEFS]@00:8 6e616e645f686472 | |
| fset -e $[EXEFS]@08:4 00000000 | |
| fset -e $[EXEFS]@0C:4 00000200 | |
| # File 2: secinfo | |
| # Offset: 0x200 | |
| # Size: 0x111 | |
| fset $[EXEFS]@10:8 736563696e666f00 | |
| fset -e $[EXEFS]@18:4 00000200 | |
| fset -e $[EXEFS]@1C:4 00000111 | |
| # File 3: movable | |
| # Offset: 0x400 | |
| # Size: 0x140 | |
| fset $[EXEFS]@20:8 6d6f7661626c6500 | |
| fset -e $[EXEFS]@28:4 00000400 | |
| fset -e $[EXEFS]@2C:4 00000140 | |
| # File 4: frndseed | |
| # Offset: 0x600 | |
| # Size: 0x110 | |
| fset $[EXEFS]@30:8 66726e6473656564 | |
| fset -e $[EXEFS]@38:4 00000600 | |
| fset -e $[EXEFS]@3C:4 00000110 | |
| # File 5: nand_cid | |
| # Offset: 0x800 | |
| # Size: 0x10 | |
| fset $[EXEFS]@40:8 6e616e645f636964 | |
| fset -e $[EXEFS]@48:4 00000800 | |
| fset -e $[EXEFS]@4C:4 00000010 | |
| # File 6: otp | |
| # Offset: 0xA00 | |
| # Size: 0x100 | |
| fset $[EXEFS]@50:8 6f74700000000000 | |
| fset -e $[EXEFS]@58:4 00000A00 | |
| fset -e $[EXEFS]@5C:4 00000100 | |
| # File 7: hwcal0 | |
| # offset: 0xC00 | |
| # Size: 0x9D0 | |
| fset $[EXEFS]@60:8 687763616c300000 | |
| fset -e $[EXEFS]@68:4 00000C00 | |
| fset -e $[EXEFS]@6C:4 000009D0 | |
| # File 8: hwcal1 | |
| # offset: 0x1600 | |
| # Size: 0x9D0 | |
| fset $[EXEFS]@70:8 687763616c310000 | |
| fset -e $[EXEFS]@78:4 00001600 | |
| fset -e $[EXEFS]@7C:4 000009D0 | |
| # Section III - Writing file data | |
| inject $[NAND_HDR] $[EXEFS]@0200 | |
| inject $[SECINFO] $[EXEFS]@0400 | |
| inject $[MOVABLE] $[EXEFS]@0600 | |
| inject $[FRNDSEED] $[EXEFS]@0800 | |
| inject $[NAND_CID] $[EXEFS]@0A00 | |
| inject $[OTP] $[EXEFS]@0C00 | |
| inject $[HWCAL0] $[EXEFS]@0E00 | |
| inject $[HWCAL1] $[EXEFS]@1800 | |
| # Section IV - Writing file hashes | |
| set HASH 0000000000000000000000000000000000000000000000000000000000000000 | |
| # Work with the exefs. It is inside RAMDISK, no need to go round 2 of reading the source files. | |
| shaget $[EXEFS]@200:200 HASH | |
| fset $[EXEFS]@1E0:20 $[HASH] | |
| shaget $[EXEFS]@400:111 HASH | |
| fset $[EXEFS]@1C0:20 $[HASH] | |
| shaget $[EXEFS]@600:140 HASH | |
| fset $[EXEFS]@1A0:20 $[HASH] | |
| shaget $[EXEFS]@800:110 HASH | |
| fset $[EXEFS]@180:20 $[HASH] | |
| shaget $[EXEFS]@A00:10 HASH | |
| fset $[EXEFS]@160:20 $[HASH] | |
| shaget $[EXEFS]@C00:100 HASH | |
| fset $[EXEFS]@140:20 $[HASH] | |
| shaget $[EXEFS]@E00:9D0 HASH | |
| fset $[EXEFS]@120:20 $[HASH] | |
| shaget $[EXEFS]@1800:9D0 HASH | |
| fset $[EXEFS]@100:20 $[HASH] |
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