View source for Secure Loader

SAMU IPL, codenamed as 80000001, is the main loader of the Secure Kernel (80010001) <br>
The header contained in it contains the following information:

= Header Info =

{| class="wikitable"
! Offset !! Size !! Description !! Notes
|-
| 0x0 || 4 || Magic || 5E D7 9A 0B
|-
| 0x4 || 4 || Header Size || Little Endian (0x280)
|-
| 0x8 || 4 || Entry Point || Little Endian (0x100)
|-
| 0xC || 4 || Payload Size || Little Endian (e.g 0x232D0)
|-
| 0x10 || 0x10 || Padding || Zeroes
|-
| 0x20 || 0x20 || SHA256 of the decrypted payload || Verified from 0x280 to 0x23550 
|-
| 0x40 || 0xE0 || Padding || Ascii Zeroes
|-
| 0x120 || 0x20 || Revision Nonce || (Likely) SHA256 of the IPL's revision, from this point onward, SAM IPL is encrypted with two layers of CBC crypto
|-
| 0x140 || 0x40 || Metadata ||
|-
| 0x180 || 0x100 || RSA Header Signature || Verified with rsa modulus from SAMU BootROM from 0 to 0x180
|-
| 0x280 || 0x232D0 || Payload ||
|-
| 0x23550 || 0x100 || RSA Footer Signature || Verified from header + body (somewhere else, likely PUP SM Manager)
|-
|}

= MetaData Info = 

{| class="wikitable"
! Offset !! Size !! Description !! Notes
|-
| 0x0 || 0x20 || MetaData Body || Contains Keyslot Keys
|-
| 0x20 || 0x20 || HDR + MetaData SHA256HMAC || SHA256 of hdr plus metadata (HMAC)
|-
|}

= MetaData Body =

{| class="wikitable"
! Offset !! Size !! Description !! Notes
|-
| 0x0 || 0x20 || KeySlot 1 || 
|-
|}

= Revision Nonce Collection =

{| class="wikitable"
! Hash !! Versions Supported !! Notes
|-
| {{hex| 60 CF 88 21 68 52 47 93 8B 6C 81 23 AE D2 A8 B0 B8 EF 9D 39 D9 AE B2 72 7A 0C 64 FD 81 01 18 E7}} || ???2.50-5.05??? || Revision 0x23
|- 
| {{hex| A5 26 93 8F 00 64 97 41 4F 3F 4E FE 25 EE F0 A3 0F 74 85 43 C9 5A 0A 3E 51 9B 08 BD 62 96 EA 77}} || ???5.05??? || Revision 0x26
|-
| {{hex| 86 52 B2 B9 C7 5B DB C7 78 A2 9F 1C DE 20 38 7C CE 8D F7 44 5A 5F CC A1 A3 56 25 93 3E 0D 9B A1}} || ???5.05??? || Revision 0x27
|-
| {{hex| 7A E1 C8 43 B3 7E 82 B2 56 56 FD 6A 2F 3B 01 5C 19 4A 40 0D FB 38 71 42 8B CB 6B D8 83 F6 FB FE}} || ???5.01-5.05??? || Revision 0x2D
|-
|}