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BINK1998 Upgrade Bit

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This commit is contained in:
Andrew
2023-06-10 19:38:22 +03:00
parent f11552509a
commit d4d50d9885
5 changed files with 36 additions and 18 deletions
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35
src/BINK1998.cpp
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@@ -7,6 +7,7 @@
/* Unpacks the Windows XP-like Product Key. */
void BINK1998::Unpack(
QWORD (&pRaw)[2],
BOOL &pUpgrade,
DWORD &pSerial,
DWORD &pHash,
QWORD &pSignature
@@ -14,8 +15,11 @@ void BINK1998::Unpack(
// We're assuming that the quantity of information within the product key is at most 114 bits.
// log2(24^25) = 114.
// Serial = Bits [0..30] -> 31 bits
pSerial = FIRSTNBITS(pRaw[0], 31);
// Upgrade = Bit 0
pUpgrade = FIRSTNBITS(pRaw[0], 1);
// Serial = Bits [1..30] -> 30 bits
pSerial = NEXTSNBITS(pRaw[0], 30, 1);
// Hash = Bits [31..58] -> 28 bits
pHash = NEXTSNBITS(pRaw[0], 28, 31);
@@ -27,6 +31,7 @@ void BINK1998::Unpack(
/* Packs the Windows XP-like Product Key. */
void BINK1998::Pack(
QWORD (&pRaw)[2],
BOOL pUpgrade,
DWORD pSerial,
DWORD pHash,
QWORD pSignature
@@ -36,7 +41,7 @@ void BINK1998::Pack(
// 64 * 2 = 128
// Signature [114..59] <- Hash [58..31] <- Serial [30..1] <- Upgrade [0]
pRaw[0] = FIRSTNBITS(pSignature, 5) << 59 | FIRSTNBITS(pHash, 28) << 31 | pSerial;
pRaw[0] = FIRSTNBITS(pSignature, 5) << 59 | FIRSTNBITS(pHash, 28) << 31 | pSerial << 1 | pUpgrade;
pRaw[1] = NEXTSNBITS(pSignature, 51, 5);
}
@@ -50,16 +55,21 @@ bool BINK1998::Verify(
BN_CTX *numContext = BN_CTX_new();
QWORD pRaw[2]{},
pSignature = 0;
pSignature;
DWORD pSerial = 0,
pHash = 0;
DWORD pData,
pSerial,
pHash;
BOOL pUpgrade;
// Convert Base24 CD-key to bytecode.
unbase24((BYTE *)pRaw, pKey);
// Extract RPK, hash and signature from bytecode.
Unpack(pRaw, pSerial, pHash, pSignature);
Unpack(pRaw, pUpgrade, pSerial, pHash, pSignature);
pData = pSerial << 1 | pUpgrade;
/*
*
@@ -107,7 +117,7 @@ bool BINK1998::Verify(
BN_bn2lebin(y, yBin, FIELD_BYTES);
// Assemble the SHA message.
memcpy((void *)&msgBuffer[0], (void *)&pSerial, 4);
memcpy((void *)&msgBuffer[0], (void *)&pData, 4);
memcpy((void *)&msgBuffer[4], (void *)xBin, FIELD_BYTES);
memcpy((void *)&msgBuffer[4 + FIELD_BYTES], (void *)yBin, FIELD_BYTES);
@@ -139,6 +149,7 @@ void BINK1998::Generate(
BIGNUM *genOrder,
BIGNUM *privateKey,
DWORD pSerial,
BOOL pUpgrade,
char (&pKey)[25]
) {
BN_CTX *numContext = BN_CTX_new();
@@ -151,6 +162,9 @@ void BINK1998::Generate(
QWORD pRaw[2]{},
pSignature = 0;
// Data segment of the RPK.
DWORD pData = pSerial << 1 | pUpgrade;
do {
EC_POINT *r = EC_POINT_new(eCurve);
@@ -175,7 +189,7 @@ void BINK1998::Generate(
BN_bn2lebin(y, yBin, FIELD_BYTES);
// Assemble the SHA message.
memcpy((void *)&msgBuffer[0], (void *)&pSerial, 4);
memcpy((void *)&msgBuffer[0], (void *)&pData, 4);
memcpy((void *)&msgBuffer[4], (void *)xBin, FIELD_BYTES);
memcpy((void *)&msgBuffer[4 + FIELD_BYTES], (void *)yBin, FIELD_BYTES);
@@ -216,10 +230,11 @@ void BINK1998::Generate(
BN_bn2lebinpad(s, (BYTE *)&pSignature, BN_num_bytes(s));
// Pack product key.
Pack(pRaw, pSerial, pHash, pSignature);
Pack(pRaw, pUpgrade, pSerial, pHash, pSignature);
if (options.verbose) {
fmt::print("Generation results:\n");
fmt::print(" Upgrade: 0x{:08x}\n", pUpgrade);
fmt::print(" Serial: 0x{:08x}\n", pSerial);
fmt::print(" Hash: 0x{:08x}\n", pHash);
fmt::print(" Signature: 0x{:08x}\n", pSignature);