306 lines
11 KiB
C
Executable File
306 lines
11 KiB
C
Executable File
/*
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* installer.c
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*/
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#include "installer.h"
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#include "memory.h"
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#include "fs.h"
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#include "crypto.h"
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#include "screen.h"
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#include "draw.h"
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#include "utils.h"
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#include "types.h"
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#include "fatfs/sdmmc/sdmmc.h"
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#include "../build/bundled.h"
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static const u8 sectorHash[SHA_256_HASH_SIZE] = {
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0x82, 0xF2, 0x73, 0x0D, 0x2C, 0x2D, 0xA3, 0xF3, 0x01, 0x65, 0xF9, 0x87, 0xFD, 0xCC, 0xAC, 0x5C,
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0xBA, 0xB2, 0x4B, 0x4E, 0x5F, 0x65, 0xC9, 0x81, 0xCD, 0x7B, 0xE6, 0xF4, 0x38, 0xE6, 0xD9, 0xD3
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},
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firm0Hash[SHA_256_HASH_SIZE] = {
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0x6E, 0x4D, 0x14, 0xAD, 0x51, 0x50, 0xA5, 0x9A, 0x87, 0x59, 0x62, 0xB7, 0x09, 0x0A, 0x3C, 0x74,
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0x4F, 0x72, 0x4B, 0xBD, 0x97, 0x39, 0x33, 0xF2, 0x11, 0xC9, 0x35, 0x22, 0xC8, 0xBB, 0x1C, 0x7D
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},
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firm0A9lhHash[SHA_256_HASH_SIZE] = {
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0x79, 0x3D, 0x35, 0x7B, 0x8F, 0xF1, 0xFC, 0xF0, 0x8F, 0xB6, 0xDB, 0x51, 0x31, 0xD4, 0xA7, 0x74,
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0x8E, 0xF0, 0x4A, 0xB1, 0xA6, 0x7F, 0xCD, 0xAB, 0x0C, 0x0A, 0xC0, 0x69, 0xA7, 0x9D, 0xC5, 0x04
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},
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firm0100Hash[SHA_256_HASH_SIZE] = {
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0xD8, 0x2D, 0xB7, 0xB4, 0x38, 0x2B, 0x07, 0x88, 0x99, 0x77, 0x91, 0x0C, 0xC6, 0xEC, 0x6D, 0x87,
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0x7D, 0x21, 0x79, 0x23, 0xD7, 0x60, 0xAF, 0x4E, 0x8B, 0x3A, 0xAB, 0xB2, 0x63, 0xE4, 0x21, 0xC6
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},
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firm1Hash[SHA_256_HASH_SIZE] = {
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0xD2, 0x53, 0xC1, 0xCC, 0x0A, 0x5F, 0xFA, 0xC6, 0xB3, 0x83, 0xDA, 0xC1, 0x82, 0x7C, 0xFB, 0x3B,
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0x2D, 0x3D, 0x56, 0x6C, 0x6A, 0x1A, 0x8E, 0x52, 0x54, 0xE3, 0x89, 0xC2, 0x95, 0x06, 0x23, 0xE5
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};
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u32 posY;
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bool isN3DS;
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void main(void)
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{
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//Determine if booting with A9LH
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bool isA9lh = !PDN_SPI_CNT;
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//Detect the console being used
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isN3DS = PDN_MPCORE_CFG == 7;
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vu32 *magic = (vu32 *)0x25000000;
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bool isOtpless = isA9lh && magic[0] == 0xABADCAFE && magic[1] == 0xDEADCAFE;
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initScreens();
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drawString(TITLE, 10, 10, COLOR_TITLE);
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posY = drawString("Thanks to delebile, #cakey and StandardBus", 10, 40, COLOR_WHITE);
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if(!sdmmc_sdcard_init() && !isOtpless)
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shutdown(1, "Error: failed to initialize SD and NAND");
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u32 pressed;
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if(!isOtpless)
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{
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posY = drawString(isA9lh ? "Press SELECT to update A9LH, START to uninstall" : "Press SELECT for a full install", 10, posY + SPACING_Y, COLOR_WHITE);
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posY = drawString("Press any other button to shutdown", 10, posY, COLOR_WHITE);
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pressed = waitInput();
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}
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else
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{
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magic[0] = magic[1] = 0;
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posY = drawString("Finalizing install...", 10, posY + SPACING_Y, COLOR_WHITE);
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pressed = 0;
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}
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if(isOtpless || pressed == BUTTON_SELECT) installer(isA9lh, isOtpless);
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if(pressed == BUTTON_START && isA9lh) uninstaller();
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shutdown(0, NULL);
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}
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static inline void installer(bool isA9lh, bool isOtpless)
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{
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bool updateA9lh = false;
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u8 otp[256] = {0},
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keySector[512];
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if(!isOtpless && !mountFs(true))
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shutdown(1, "Error: failed to mount the SD card");
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//If making a first install on O3DS, we need the OTP
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if(!isA9lh && !isN3DS)
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{
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const char otpPath[] = "a9lh/otp.bin";
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//Prefer OTP from memory if available
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if(memcmp((void *)OTP_FROM_MEM, otp, sizeof(otp)) == 0)
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{
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// Read OTP from file
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if(fileRead(otp, otpPath, sizeof(otp)) != sizeof(otp))
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shutdown(1, "Error: otp.bin doesn't exist and can't be dumped");
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}
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else
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{
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//Write OTP from memory to file
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fileWrite((void *)OTP_FROM_MEM, otpPath, sizeof(otp));
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memcpy(otp, (void *)OTP_FROM_MEM, sizeof(otp));
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}
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}
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//Setup the key sector de/encryption with the SHA register or otp.bin
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if(isA9lh || !isN3DS) setupKeyslot0x11(otp, isA9lh);
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//Calculate the CTR for the 3DS partitions
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getNandCtr();
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//Get NAND FIRM0 and test that the CTR is correct
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if(!isOtpless)
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{
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readFirm0((u8 *)FIRM0_OFFSET, FIRM0_SIZE);
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if(memcmp((void *)FIRM0_OFFSET, "FIRM", 4) != 0)
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shutdown(1, "Error: failed to setup FIRM encryption");
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}
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//If booting from A9LH or on N3DS, we can use the key sector from NAND
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if(isA9lh || isN3DS) getSector(keySector, isA9lh);
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else
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{
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//Read decrypted key sector
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if(fileRead(keySector, "a9lh/secret_sector.bin", sizeof(keySector)) != sizeof(keySector))
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shutdown(1, "Error: secret_sector.bin doesn't exist or has\na wrong size");
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if(!verifyHash(keySector, sizeof(keySector), sectorHash))
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shutdown(1, "Error: secret_sector.bin is invalid or corrupted");
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}
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if(isA9lh && !isOtpless)
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{
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u32 i;
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for(i = 1; i < 3; i++)
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if(memcmp(keySector + AES_BLOCK_SIZE, key2s[i], AES_BLOCK_SIZE) == 0) break;
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if(i == 3) shutdown(1, "Error: the OTP hash or the NAND key sector\nare invalid");
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if(i == 1) updateA9lh = true;
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}
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if(!isA9lh || updateA9lh || isOtpless) generateSector(keySector, (!isA9lh && isN3DS) ? 1 : 0);
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if(!isA9lh || updateA9lh)
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{
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//Read FIRM0
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if(fileRead((void *)FIRM0_OFFSET, "a9lh/firm0.bin", FIRM0_SIZE) != FIRM0_SIZE)
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shutdown(1, "Error: firm0.bin doesn't exist or has a wrong size");
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if(!verifyHash((void *)FIRM0_OFFSET, FIRM0_SIZE, firm0Hash))
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shutdown(1, "Error: firm0.bin is invalid or corrupted");
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}
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else if(!isOtpless && !verifyHash((void *)FIRM0_OFFSET, SECTION2_POSITION, firm0A9lhHash))
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shutdown(1, "Error: NAND FIRM0 is invalid");
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if(!isA9lh)
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{
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if(isN3DS)
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{
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//Read 10.0 FIRM0
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if(fileRead((void *)FIRM0_100_OFFSET, "a9lh/firm0_100.bin", FIRM0100_SIZE) != FIRM0100_SIZE)
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shutdown(1, "Error: firm0_100.bin doesn't exist or has a wrong size");
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if(!verifyHash((void *)FIRM0_100_OFFSET, FIRM0100_SIZE, firm0100Hash))
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shutdown(1, "Error: firm0_100.bin is invalid or corrupted");
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}
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//Read FIRM1
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if(fileRead((void *)FIRM1_OFFSET, "a9lh/firm1.bin", FIRM1_SIZE) != FIRM1_SIZE)
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shutdown(1, "Error: firm1.bin doesn't exist or has a wrong size");
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if(!verifyHash((void *)FIRM1_OFFSET, FIRM1_SIZE, firm1Hash))
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shutdown(1, "Error: firm1.bin is invalid or corrupted");
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}
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if(!isOtpless)
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{
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bool missingStage1Hash,
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missingStage2Hash;
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u8 stageHash[SHA_256_HASH_SIZE];
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//Inject stage1
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memset32((void *)STAGE1_OFFSET, 0, MAX_STAGE1_SIZE);
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u32 stageSize = fileRead((void *)STAGE1_OFFSET, "a9lh/payload_stage1.bin", MAX_STAGE1_SIZE);
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if(!stageSize)
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shutdown(1, "Error: payload_stage1.bin doesn't exist or\nexceeds max size");
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const u8 zeroes[688] = {0};
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if(memcmp(zeroes, (void *)STAGE1_OFFSET, 688) == 0)
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shutdown(1, "Error: the payload_stage1.bin you're attempting\nto install is not compatible");
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//Verify stage1
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if(fileRead(stageHash, "a9lh/payload_stage1.bin.sha", sizeof(stageHash)) == sizeof(stageHash))
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{
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if(!verifyHash((void *)STAGE1_OFFSET, stageSize, stageHash))
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shutdown(1, "Error: payload_stage1.bin is invalid\nor corrupted");
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missingStage1Hash = false;
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}
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else missingStage1Hash = true;
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//Read stage2
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memset32((void *)STAGE2_OFFSET, 0, MAX_STAGE2_SIZE);
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stageSize = fileRead((void *)STAGE2_OFFSET, "a9lh/payload_stage2.bin", MAX_STAGE2_SIZE);
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if(!stageSize)
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shutdown(1, "Error: payload_stage2.bin doesn't exist or\nexceeds max size");
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//Verify stage2
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if(fileRead(stageHash, "a9lh/payload_stage2.bin.sha", sizeof(stageHash)) == sizeof(stageHash))
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{
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if(!verifyHash((void *)STAGE2_OFFSET, stageSize, stageHash))
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shutdown(1, "Error: payload_stage2.bin is invalid\nor corrupted");
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missingStage2Hash = false;
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}
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else missingStage2Hash = true;
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if(missingStage1Hash || missingStage2Hash)
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{
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posY = drawString("Couldn't verify stage1 and/or stage2 integrity!", 10, posY + 10, COLOR_RED);
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posY = drawString("Continuing might be dangerous!", 10, posY, COLOR_RED);
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inputSequence();
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}
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posY = drawString("All checks passed, installing...", 10, posY + SPACING_Y, COLOR_WHITE);
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sdmmc_nand_writesectors(0x5C000, MAX_STAGE2_SIZE / 0x200, (u8 *)STAGE2_OFFSET);
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}
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if(!isA9lh) writeFirm((u8 *)FIRM1_OFFSET, true, FIRM1_SIZE);
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if(!isA9lh || updateA9lh || isOtpless) sdmmc_nand_writesectors(0x96, 1, keySector);
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if(!isA9lh && isN3DS)
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{
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*(vu32 *)0x80FD0FC = 0xEAFFCBBF; //B 0x80F0000
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memcpy((void *)0x80F0000, loader_bin, loader_bin_size);
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writeFirm((u8 *)FIRM0_100_OFFSET, false, FIRM0100_SIZE);
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mcuReboot();
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}
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writeFirm((u8 *)FIRM0_OFFSET, false, FIRM0_SIZE);
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shutdown(2, isA9lh && !isOtpless ? "Update: success!" : "Full install: success!");
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}
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static inline void uninstaller(void)
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{
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u8 keySector[512];
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posY = drawString("You are about to uninstall A9LH!", 10, posY + 10, COLOR_RED);
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posY = drawString("Doing this will require having 9.0 to reinstall!", 10, posY, COLOR_RED);
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inputSequence();
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//New 3DSes need a key sector with a proper key2, Old 3DSes have a blank key sector
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if(isN3DS)
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{
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setupKeyslot0x11(NULL, true);
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getSector(keySector, true);
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if(memcmp(keySector + AES_BLOCK_SIZE, key2s[1], AES_BLOCK_SIZE) != 0 && memcmp(keySector + AES_BLOCK_SIZE, key2s[2], AES_BLOCK_SIZE) != 0)
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shutdown(1, "Error: the OTP hash or the NAND key sector\nare invalid");
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generateSector(keySector, 2);
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}
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else memset32(keySector, 0, sizeof(keySector));
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if(!mountFs(false))
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shutdown(1, "Error: failed to mount CTRNAND");
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//Read FIRM cxi from CTRNAND
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switch(firmRead((void *)FIRM0_OFFSET))
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{
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case 1:
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shutdown(1, "Error: more than one FIRM cxi has been detected");
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break;
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case 2:
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shutdown(1, "Error: a FIRM equal or newer than 11.0\nhas been detected");
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break;
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case 3:
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shutdown(1, "Error: the CTRNAND FIRM is too large");
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break;
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case 4:
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shutdown(1, "Error: couldn't read FIRM from CTRNAND");
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break;
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default:
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break;
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}
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//Decrypt it and get its size
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u32 firmSize = decryptExeFs((u8 *)FIRM0_OFFSET);
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//writeFirm encrypts in-place, so we need two copies
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memcpy((void *)FIRM1_OFFSET, (void *)FIRM0_OFFSET, firmSize);
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//Zero out the stage2 space on NAND
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memset32((void *)STAGE2_OFFSET, 0, MAX_STAGE2_SIZE);
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posY = drawString("All checks passed, uninstalling...", 10, posY + SPACING_Y, COLOR_WHITE);
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//Point of no return, install stuff in the safest order
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sdmmc_nand_writesectors(0x96, 1, keySector);
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writeFirm((u8 *)FIRM0_OFFSET, false, firmSize);
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writeFirm((u8 *)FIRM1_OFFSET, true, firmSize);
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sdmmc_nand_writesectors(0x5C000, MAX_STAGE2_SIZE / 0x200, (u8 *)STAGE2_OFFSET);
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shutdown(2, "Uninstall: success!");
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} |