wip xbox xsv builder

.gitignore

@@ -2,10 +2,18 @@
 *.bin
 *.elf
 *.o
+ernie
+# wip shellcode
+*.asm
+# output artifacts
 *.gci
+*.xsv
+*.xbx
+*.xbe
 # executable artifacts
 *.exe
 gci_builder
+xsv_builder
 *.dSYM
 # other stuff
 *.zip

README.md

@@ -38,8 +38,8 @@ If you only want to build for a specific region, type `make usa` or `make eur`.
 
 ## License
 
-The memory card loader and GCI builder are licensed under the GNU General Public License version 2. See attached
+The GameCube memory card loader and GCI builder are licensed under the GNU General Public License version 2. See attached
 LICENSE file for more details.
 
-This chain uses FIX94's [gc-exploit-common-loader](https://github.com/FIX94/gc-exploit-common-loader), also licensed
+The GameCube chain uses FIX94's [gc-exploit-common-loader](https://github.com/FIX94/gc-exploit-common-loader), also licensed
 under GPLv2.

gci_builder_src/Makefile

@@ -8,7 +8,7 @@ SRC := gci_builder.c
 default: all
 
 $(TARGET): $(SRC)
-	$(CC) $(CFLAGS) -o $@ $<
+	$(CC) $(CFLAGS) -o $@ $^
 
 .PHONY: all
 all: $(TARGET)

xbox_src/Makefile

@@ -0,0 +1,18 @@
+TARGET := xsv_builder
+ifeq ($(OS),Windows_NT)
+	TARGET := $(addsuffix .exe,$(TARGET))
+endif
+
+SRC := sha1.c hmac_sha1.c xsv_builder.c
+
+default: all
+
+$(TARGET): $(SRC)
+	$(CC) $(CFLAGS) -o $@ $^
+
+.PHONY: all
+all: $(TARGET)
+
+.PHONY: clean
+clean:
+	@-rm -f $(TARGET)

xbox_src/hmac_sha1.c

@@ -0,0 +1,43 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include "sha1.h"
+#include "hmac_sha1.h"
+
+void HMAC_SHA1_Init(HMAC_SHA1_CTX *context, const uint8_t *key, size_t key_len) {
+    // upper limit on the key length
+    if (key_len > 0x40) key_len = 0x40;
+    // prepare the sha1 contexts
+    SHA1_Init(&context->state[0]);
+    SHA1_Init(&context->state[1]);
+    // prepare the key buffers to initialise the sha1 contexts
+    uint8_t key_buf_1[0x40] = {0};
+    uint8_t key_buf_2[0x40] = {0};
+    memcpy(key_buf_1, key, key_len);
+    memcpy(key_buf_2, key, key_len);
+    for (int i = 0; i < 0x40; i++) {
+        key_buf_1[i] ^= 0x36;
+        key_buf_2[i] ^= 0x5C;
+    }
+    SHA1_Update(&context->state[0], key_buf_1, 0x40);
+    SHA1_Update(&context->state[1], key_buf_2, 0x40);
+}
+
+void HMAC_SHA1_Update(HMAC_SHA1_CTX *context, const uint8_t *data, const size_t len) {
+    SHA1_Update(&context->state[0], data, len);
+}
+
+void HMAC_SHA1_Final(HMAC_SHA1_CTX *context, uint8_t digest[SHA1_DIGEST_SIZE]) {
+    uint8_t hash[0x14];
+    SHA1_Final(&context->state[0], hash);
+    // feed the final hash of the first state into the second state
+    SHA1_Update(&context->state[1], hash, sizeof(hash));
+    SHA1_Final(&context->state[1], digest);
+}
+
+void HMAC_SHA1(const uint8_t *key, size_t key_len, const uint8_t *data, const size_t len, uint8_t digest[SHA1_DIGEST_SIZE]) {
+    HMAC_SHA1_CTX ctx = {0};
+    HMAC_SHA1_Init(&ctx, key, key_len);
+    HMAC_SHA1_Update(&ctx, data, len);
+    HMAC_SHA1_Final(&ctx, digest);
+}

xbox_src/hmac_sha1.h

@@ -0,0 +1,29 @@
+#ifndef _HMAC_SHA1_H
+#define _HMAC_SHA1_H
+
+#include <stdint.h>
+#include <stdio.h>
+#include "sha1.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+typedef struct {
+    SHA1_CTX state[2];
+} HMAC_SHA1_CTX;
+
+#define SHA1_DIGEST_SIZE 20
+
+void HMAC_SHA1_Init(HMAC_SHA1_CTX *context, const uint8_t *key, size_t key_len);
+void HMAC_SHA1_Update(HMAC_SHA1_CTX *context, const uint8_t *data, const size_t len);
+void HMAC_SHA1_Final(HMAC_SHA1_CTX *context, uint8_t digest[SHA1_DIGEST_SIZE]);
+
+void HMAC_SHA1(const uint8_t *key, size_t key_len, const uint8_t *data, const size_t len, uint8_t digest[SHA1_DIGEST_SIZE]);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _HMAC_SHA1_H

xbox_src/sha1.c

@@ -0,0 +1,256 @@
+/*
+SHA-1 in C
+By Steve Reid <[email protected]>
+100% Public Domain
+
+-----------------
+Modified 7/98
+By James H. Brown <[email protected]>
+Still 100% Public Domain
+
+Corrected a problem which generated improper hash values on 16 bit machines
+Routine SHA1Update changed from
+	void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned int
+len)
+to
+	void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned
+long len)
+
+The 'len' parameter was declared an int which works fine on 32 bit machines.
+However, on 16 bit machines an int is too small for the shifts being done
+against
+it.  This caused the hash function to generate incorrect values if len was
+greater than 8191 (8K - 1) due to the 'len << 3' on line 3 of SHA1Update().
+
+Since the file IO in main() reads 16K at a time, any file 8K or larger would
+be guaranteed to generate the wrong hash (e.g. Test Vector #3, a million
+"a"s).
+
+I also changed the declaration of variables i & j in SHA1Update to
+unsigned long from unsigned int for the same reason.
+
+These changes should make no difference to any 32 bit implementations since
+an
+int and a long are the same size in those environments.
+
+--
+I also corrected a few compiler warnings generated by Borland C.
+1. Added #include <process.h> for exit() prototype
+2. Removed unused variable 'j' in SHA1Final
+3. Changed exit(0) to return(0) at end of main.
+
+ALL changes I made can be located by searching for comments containing 'JHB'
+-----------------
+Modified 8/98
+By Steve Reid <[email protected]>
+Still 100% public domain
+
+1- Removed #include <process.h> and used return() instead of exit()
+2- Fixed overwriting of finalcount in SHA1Final() (discovered by Chris Hall)
+3- Changed email address from [email protected] to [email protected]
+
+-----------------
+Modified 4/01
+By Saul Kravitz <[email protected]>
+Still 100% PD
+Modified to run on Compaq Alpha hardware.
+
+-----------------
+Modified 07/2002
+By Ralph Giles <[email protected]>
+Still 100% public domain
+modified for use with stdint types, autoconf
+code cleanup, removed attribution comments
+switched SHA1Final() argument order for consistency
+use SHA1_ prefix for public api
+move public api to sha1.h
+*/
+
+/*
+Test Vectors (from FIPS PUB 180-1)
+"abc"
+  A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
+"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
+  84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
+A million repetitions of "a"
+  34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
+*/
+
+#define SHA1HANDSOFF
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+
+#include "sha1.h"
+
+void SHA1_Transform(uint32_t state[5], const uint8_t buffer[64]);
+
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+/* blk0() and blk() perform the initial expand. */
+/* I got the idea of expanding during the round function from SSLeay */
+/* FIXME: can we do this in an endian-proof way? */
+#ifdef WORDS_BIGENDIAN
+#define blk0(i) block->l[i]
+#else
+#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
+    |(rol(block->l[i],8)&0x00FF00FF))
+#endif
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
+    ^block->l[(i+2)&15]^block->l[i&15],1))
+
+/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
+
+#ifdef VERBOSE                  /* SAK */
+void
+SHAPrintContext(SHA1_CTX *context, char *msg)
+{
+    printf("%s (%d,%d) %08x %08x %08x %08x %08x\n",
+           msg, context->count[0], context->count[1], context->state[0], context->state[1], context->state[2], context->state[3], context->state[4]);
+}
+#endif /* VERBOSE */
+
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+void
+SHA1_Transform(uint32_t state[5], const uint8_t buffer[64])
+{
+    uint32_t a, b, c, d, e;
+    typedef union {
+        uint8_t c[64];
+        uint32_t l[16];
+    } CHAR64LONG16;
+    CHAR64LONG16 *block;
+
+#ifdef SHA1HANDSOFF
+    static uint8_t workspace[64];
+
+    block = (CHAR64LONG16 *) workspace;
+    memcpy(block, buffer, 64);
+#else
+    block = (CHAR64LONG16 *) buffer;
+#endif
+
+    /* Copy context->state[] to working vars */
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+
+    /* Add the working vars back into context.state[] */
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+
+    /* Wipe variables */
+    a = b = c = d = e = 0;
+}
+
+/* SHA1Init - Initialize new context */
+void
+SHA1_Init(SHA1_CTX *context)
+{
+    /* SHA1 initialization constants */
+    context->state[0] = 0x67452301;
+    context->state[1] = 0xEFCDAB89;
+    context->state[2] = 0x98BADCFE;
+    context->state[3] = 0x10325476;
+    context->state[4] = 0xC3D2E1F0;
+    context->count[0] = context->count[1] = 0;
+}
+
+/* Run your data through this. */
+void
+SHA1_Update(SHA1_CTX *context, const uint8_t *data, const size_t len)
+{
+    size_t i, j;
+
+#ifdef VERBOSE
+    SHAPrintContext(context, "before");
+#endif
+
+    j = (context->count[0] >> 3) & 63;
+    if ((context->count[0] += len << 3) < (len << 3))
+        context->count[1]++;
+    context->count[1] += (len >> 29);
+    if ((j + len) > 63) {
+        memcpy(&context->buffer[j], data, (i = 64 - j));
+        SHA1_Transform(context->state, context->buffer);
+        for (; i + 63 < len; i += 64) {
+            SHA1_Transform(context->state, data + i);
+        }
+        j = 0;
+    } else
+        i = 0;
+    memcpy(&context->buffer[j], &data[i], len - i);
+
+#ifdef VERBOSE
+    SHAPrintContext(context, "after ");
+#endif
+}
+
+/* Add padding and return the message digest. */
+void
+SHA1_Final(SHA1_CTX *context, uint8_t digest[SHA1_DIGEST_SIZE])
+{
+    uint32_t i;
+    uint8_t finalcount[8];
+
+    for (i = 0; i < 8; i++) {
+        finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
+                                         >> ((3 - (i & 3)) * 8)) & 255);        /* Endian independent */
+    }
+    SHA1_Update(context, (uint8_t *) "\200", 1);
+    while ((context->count[0] & 504) != 448) {
+        SHA1_Update(context, (uint8_t *) "\0", 1);
+    }
+    SHA1_Update(context, finalcount, 8);        /* Should cause a SHA1_Transform() */
+    for (i = 0; i < SHA1_DIGEST_SIZE; i++) {
+        digest[i] = (uint8_t)
+                    ((context->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
+    }
+
+    /* Wipe variables */
+    i = 0;
+    memset(context->buffer, 0, 64);
+    memset(context->state, 0, 20);
+    memset(context->count, 0, 8);
+    memset(finalcount, 0, 8);   /* SWR */
+
+#ifdef SHA1HANDSOFF             /* make SHA1Transform overwrite its own static vars */
+    SHA1_Transform(context->state, context->buffer);
+#endif
+}