mirror of
https://github.com/DarkStore-3DS/Project_CTR.git
synced 2026-07-03 08:49:03 +00:00
Reisyukaku
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "aes_keygen.h"
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#include "tik.h"
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#include "ctr.h"
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#include "utils.h"
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void tik_init(tik_context* ctx)
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{
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memset(ctx, 0, sizeof(tik_context));
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}
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void tik_set_file(tik_context* ctx, FILE* file)
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{
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ctx->file = file;
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}
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void tik_set_offset(tik_context* ctx, u64 offset)
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{
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ctx->offset = offset;
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}
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void tik_set_size(tik_context* ctx, u32 size)
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{
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ctx->size = size;
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}
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void tik_set_usersettings(tik_context* ctx, settings* usersettings)
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{
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ctx->usersettings = usersettings;
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}
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void tik_get_titlekey(tik_context* ctx, u8 key[0x10])
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{
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memcpy(key, ctx->titlekey, 0x10);
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}
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void tik_get_titleid(tik_context* ctx, u8 titleid[8])
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{
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memcpy(titleid, ctx->tik.title_id, 8);
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}
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void tik_get_iv(tik_context* ctx, u8 iv[16])
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{
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memset(iv, 0, 16);
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memcpy(iv, ctx->tik.title_id, 8);
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}
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void tik_decrypt_titlekey(tik_context* ctx, u8 decryptedkey[0x10])
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{
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u8 iv[16];
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u8* keyX = settings_get_common_keyX(ctx->usersettings);
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const u8 keyYs[6][16] = {
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// application titles (eShop titles)
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{0xd0, 0x7b, 0x33, 0x7f, 0x9c, 0xa4, 0x38, 0x59, 0x32, 0xa2, 0xe2, 0x57, 0x23, 0x23, 0x2e, 0xb9},
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// system titles
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{0x0c, 0x76, 0x72, 0x30, 0xf0, 0x99, 0x8f, 0x1c, 0x46, 0x82, 0x82, 0x02, 0xfa, 0xac, 0xbe, 0x4c},
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// these are unused
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{0xc4, 0x75, 0xcb, 0x3a, 0xb8, 0xc7, 0x88, 0xbb, 0x57, 0x5e, 0x12, 0xa1, 0x09, 0x07, 0xb8, 0xa4},
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{0xe4, 0x86, 0xee, 0xe3, 0xd0, 0xc0, 0x9c, 0x90, 0x2f, 0x66, 0x86, 0xd4, 0xc0, 0x6f, 0x64, 0x9f},
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{0xed, 0x31, 0xba, 0x9c, 0x04, 0xb0, 0x67, 0x50, 0x6c, 0x44, 0x97, 0xa3, 0x5b, 0x78, 0x04, 0xfc},
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{0x5e, 0x66, 0x99, 0x8a, 0xb4, 0xe8, 0x93, 0x16, 0x06, 0x85, 0x0f, 0xd7, 0xa1, 0x6d, 0xd7, 0x55},
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};
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u8 key[16];
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memset(decryptedkey, 0, 0x10);
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if (!keyX)
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{
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fprintf(stdout, "Warning, could not read common key.\n");
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}
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else
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{
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ctr_aes_keygen(keyX, keyYs[(ctx->tik.title_id[3] & 0x10) ? 1 : 0], key);
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memset(iv, 0, 0x10);
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memcpy(iv, ctx->tik.title_id, 8);
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ctr_init_cbc_decrypt(&ctx->aes, key, iv);
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ctr_decrypt_cbc(&ctx->aes, ctx->tik.encrypted_title_key, decryptedkey, 0x10);
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}
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}
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void tik_process(tik_context* ctx, u32 actions)
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{
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if (ctx->size < sizeof(eticket))
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{
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fprintf(stderr, "Error, ticket size too small\n");
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goto clean;
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}
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fseeko64(ctx->file, ctx->offset, SEEK_SET);
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fread((u8*)&ctx->tik, 1, sizeof(eticket), ctx->file);
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tik_decrypt_titlekey(ctx, ctx->titlekey);
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if (actions & InfoFlag)
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{
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tik_print(ctx);
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}
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clean:
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return;
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}
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void tik_print(tik_context* ctx)
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{
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int i;
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eticket* tik = &ctx->tik;
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fprintf(stdout, "\nTicket content:\n");
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fprintf(stdout,
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"Signature Type: %08x\n"
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"Issuer: %s\n",
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getle32(tik->sig_type), tik->issuer
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);
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fprintf(stdout, "Signature:\n");
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hexdump(tik->signature, 0x100);
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fprintf(stdout, "\n");
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memdump(stdout, "Encrypted Titlekey: ", tik->encrypted_title_key, 0x10);
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if (settings_get_common_keyX(ctx->usersettings))
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memdump(stdout, "Decrypted Titlekey: ", ctx->titlekey, 0x10);
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memdump(stdout, "Ticket ID: ", tik->ticket_id, 0x08);
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fprintf(stdout, "Ticket Version: %d\n", getle16(tik->ticket_version));
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memdump(stdout, "Title ID: ", tik->title_id, 0x08);
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fprintf(stdout, "Common Key Index: %d\n", tik->commonkey_idx);
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fprintf(stdout, "Content permission map:\n");
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for(i = 0; i < 0x40; i++) {
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printf(" %02x", tik->content_permissions[i]);
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if ((i+1) % 8 == 0)
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printf("\n");
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}
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printf("\n");
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}
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