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Delacroix, posted Tue Mar 01, 2016 11:14 am (11711)

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Greetings. May I ask for help with this archive?

RimeBerta.dat

Thanks in advance.

aluigi, posted Tue Mar 01, 2016 2:26 pm (11714)

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In my opinion the first 0x400 bytes of each file are encrypted with a block cipher like AES or blowfish.
Is this file from PC or mobile?

Ekey, posted Tue Mar 01, 2016 9:02 pm (11727)

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Xor with two keys

Code:

static unsigned char pKey1[512] = {
       0xAD, 0xDD, 0x11, 0x1D, 0x2F, 0xC7, 0x48, 0xDA, 0x17, 0xF6, 0x43, 0x89, 0x64, 0x3E, 0x30, 0x6E,
       0xEF, 0xCD, 0x8B, 0xA7, 0x6D, 0x5E, 0xF1, 0x72, 0xEE, 0x71, 0x35, 0x76, 0xBB, 0xC2, 0x5A, 0xFC,
       0x86, 0x8A, 0xA5, 0xFB, 0x14, 0xAC, 0xAF, 0x1F, 0x74, 0xF3, 0x84, 0xD9, 0x33, 0xC6, 0x18, 0x34,
       0x13, 0x8C, 0xD4, 0x65, 0xE1, 0x2A, 0x53, 0xDC, 0xD5, 0x81, 0xE2, 0x52, 0x07, 0x46, 0x9C, 0xE7,
       0x99, 0x32, 0x87, 0x9E, 0x45, 0x01, 0x66, 0x56, 0x5B, 0x54, 0xB3, 0x10, 0xC1, 0xB4, 0x63, 0x03,
       0x2B, 0xAA, 0x7C, 0x77, 0x50, 0x29, 0xE5, 0x06, 0x83, 0xA0, 0x38, 0x96, 0x3C, 0x78, 0x93, 0xB1,
       0xB7, 0x04, 0xED, 0x92, 0x94, 0xD3, 0x73, 0x44, 0x08, 0x21, 0x05, 0x60, 0xEB, 0x61, 0xE9, 0x40,
       0xC9, 0xC4, 0xF0, 0x9D, 0xD6, 0x5F, 0x3A, 0xC0, 0xBD, 0x49, 0xDF, 0x4A, 0xAE, 0x24, 0x8E, 0xE8,
       0xFF, 0x23, 0x6F, 0xF2, 0xB0, 0x20, 0x7F, 0x5D, 0xBA, 0xA3, 0x88, 0xC3, 0x57, 0xB6, 0x9B, 0xDE,
       0xF5, 0x4B, 0xA4, 0x80, 0x4E, 0x59, 0x1E, 0xD2, 0x82, 0x12, 0xDB, 0x47, 0x6A, 0x68, 0xCE, 0xEA,
       0x98, 0xE3, 0x26, 0x0E, 0x19, 0xFD, 0x4D, 0xB8, 0xCB, 0x37, 0xE6, 0xB5, 0xEC, 0x16, 0xA1, 0x5C,
       0xA6, 0x39, 0x3B, 0xFE, 0x2E, 0xB9, 0xCA, 0xBC, 0x75, 0x62, 0xBE, 0x79, 0x0F, 0xF8, 0x25, 0x8F,
       0x70, 0xD8, 0x0D, 0x09, 0x2D, 0x8D, 0x15, 0x1C, 0x3D, 0x41, 0xF7, 0x7D, 0x58, 0xB2, 0x4F, 0x4C,
       0x6B, 0xC8, 0x67, 0xF4, 0x7B, 0x22, 0x6C, 0xCC, 0xD0, 0xAB, 0x00, 0x0A, 0x7A, 0xD1, 0x2C, 0xA2,
       0x36, 0x1B, 0x95, 0xC5, 0xCF, 0xBF, 0x31, 0x28, 0x0C, 0x42, 0x69, 0xE0, 0x90, 0xD7, 0x51, 0xA9,
       0xE4, 0x85, 0xF9, 0x0B, 0x7E, 0x97, 0x9F, 0x3F, 0x91, 0xFA, 0x9A, 0x02, 0x1A, 0x55, 0x27, 0xA8,
       0x2D, 0x51, 0x90, 0x02, 0x8B, 0xFD, 0x71, 0xE6, 0x87, 0x58, 0xBB, 0x3F, 0x1D, 0xF8, 0xF3, 0x89,
       0xA5, 0x66, 0xD5, 0xA3, 0x8A, 0xF5, 0xDF, 0x10, 0x63, 0xA6, 0x56, 0x4F, 0xFC, 0x1B, 0x7E, 0x83,
       0x9B, 0xCC, 0xFE, 0x88, 0x3B, 0xC0, 0x6F, 0x3C, 0x38, 0x48, 0x5A, 0x42, 0x45, 0x77, 0xDC, 0xAF,
       0x1E, 0x0D, 0xED, 0xF0, 0x49, 0x8C, 0x4A, 0x30, 0x11, 0xE5, 0x73, 0x72, 0x59, 0x3E, 0xB3, 0x33,
       0xF4, 0xD6, 0x94, 0xDB, 0x70, 0xA2, 0xA8, 0x76, 0xF7, 0xBA, 0x4B, 0x0A, 0xFA, 0x5C, 0x1A, 0x01,
       0x86, 0xEA, 0xD3, 0x09, 0x04, 0x81, 0x00, 0xB6, 0x8F, 0x68, 0x64, 0xC7, 0xBF, 0x9E, 0x9D, 0x37,
       0x2B, 0x5B, 0xD8, 0x40, 0x3D, 0xD0, 0xF9, 0x43, 0x2E, 0x69, 0x93, 0xCD, 0x47, 0xDE, 0x8D, 0xDD,
       0x44, 0x41, 0x21, 0x9A, 0x60, 0x24, 0xB2, 0x29, 0xF6, 0xCE, 0x3A, 0x23, 0x67, 0x2F, 0x0B, 0x34,
       0x0E, 0xAB, 0xEB, 0x03, 0x62, 0xC2, 0xD9, 0x20, 0x7B, 0x25, 0x16, 0x7F, 0x7A, 0xE4, 0xA4, 0x36,
       0xC8, 0xD1, 0x0F, 0x46, 0xBC, 0x28, 0x92, 0xC3, 0x99, 0xE8, 0x50, 0x53, 0x85, 0x9F, 0xF2, 0xB1,
       0xB9, 0xE0, 0xD2, 0x82, 0xF1, 0x5E, 0x2A, 0x06, 0xDA, 0x32, 0x74, 0xCF, 0xD7, 0xE9, 0xC4, 0x6A,
       0x4D, 0x52, 0x17, 0x1F, 0xAA, 0x22, 0x9C, 0xEE, 0xA0, 0xB0, 0xB7, 0x7C, 0x80, 0x65, 0x91, 0xD4,
       0xC6, 0x13, 0xA7, 0xFF, 0xC1, 0x26, 0x0C, 0xBD, 0xE2, 0x27, 0xFB, 0x39, 0x7D, 0xCA, 0x5F, 0x84,
       0x95, 0xEC, 0x18, 0x6B, 0xB4, 0x79, 0x6E, 0x6C, 0xE7, 0x31, 0xC5, 0x2C, 0x55, 0x75, 0x07, 0xAC,
       0xAE, 0x08, 0xAD, 0x54, 0x98, 0x8E, 0x78, 0x6D, 0xA9, 0xCB, 0x15, 0xC9, 0xBE, 0x19, 0xEF, 0x5D,
       0x97, 0xE3, 0xA1, 0xE1, 0x57, 0x4C, 0x61, 0x4E, 0x05, 0x35, 0x14, 0xB5, 0x96, 0x1C, 0x12, 0xB8};

Code:

static unsigned char pKey2[512] = {
       0x61, 0x17, 0x12, 0xF8, 0x34, 0x69, 0xF9, 0xF2, 0x80, 0x7D, 0xFF, 0xCB, 0x1E, 0xF6, 0x2B, 0xC5,
       0xFA, 0x40, 0xEE, 0xD0, 0x19, 0x62, 0x48, 0xBF, 0x90, 0x6F, 0x10, 0xDE, 0x0D, 0xAA, 0x8A, 0x33,
       0x0C, 0xED, 0x37, 0x04, 0x4E, 0x4C, 0xF1, 0x9A, 0x87, 0xF5, 0x44, 0x58, 0x5A, 0x9E, 0x7C, 0x93,
       0x67, 0x46, 0xFD, 0xA0, 0x4B, 0x28, 0x26, 0xDB, 0x5C, 0xF0, 0x21, 0xB7, 0xE9, 0x54, 0x7B, 0x01,
       0x0A, 0xA3, 0x60, 0xD5, 0xC6, 0xB5, 0x23, 0x68, 0xEA, 0x00, 0xB1, 0x86, 0xA9, 0x78, 0x65, 0x42,
       0xAD, 0x91, 0xEB, 0x7E, 0xCE, 0xF7, 0xA2, 0xDF, 0x5F, 0x25, 0x84, 0x59, 0x20, 0xE8, 0x6E, 0xAE,
       0x0E, 0x97, 0xA1, 0x43, 0xD2, 0x13, 0x66, 0xE1, 0xCA, 0x63, 0xC7, 0x7F, 0xB0, 0x2D, 0xA7, 0x14,
       0x2F, 0x06, 0x1B, 0x9D, 0xFE, 0xE2, 0x11, 0x1D, 0x9B, 0xEF, 0x79, 0x9C, 0x71, 0x6D, 0xD7, 0x3A,
       0xB2, 0xAF, 0xD4, 0xB8, 0x6A, 0xDC, 0xCC, 0x77, 0x74, 0x8F, 0xA6, 0x3F, 0x98, 0x85, 0x83, 0x92,
       0xC0, 0x81, 0x47, 0xCD, 0x5D, 0x29, 0xB6, 0x6B, 0xAB, 0x52, 0x08, 0x4F, 0xB3, 0x7A, 0x32, 0xE5,
       0x18, 0xD9, 0x0B, 0xF4, 0x2A, 0x3E, 0x24, 0x72, 0x76, 0x41, 0x6C, 0x53, 0x82, 0x56, 0x07, 0x4D,
       0x1A, 0x5B, 0x3C, 0xE6, 0x02, 0xCF, 0x16, 0x73, 0x4A, 0xDD, 0xC4, 0x57, 0x55, 0xC3, 0x9F, 0x1C,
       0x22, 0x45, 0x70, 0x95, 0x64, 0xD3, 0xBC, 0xE7, 0x35, 0xBB, 0x49, 0xAC, 0xA4, 0x0F, 0x3B, 0x03,
       0xD6, 0x05, 0xB4, 0x89, 0xE4, 0xBA, 0x36, 0xC2, 0xD8, 0x51, 0x39, 0x8E, 0xA5, 0x30, 0x8B, 0xA8,
       0xBE, 0x1F, 0xF3, 0x2E, 0x5E, 0x94, 0x50, 0x3D, 0x75, 0xFB, 0xE3, 0x09, 0x2C, 0xD1, 0xC1, 0xDA,
       0x8C, 0xC9, 0x31, 0x38, 0xC8, 0x99, 0xB9, 0x15, 0xFC, 0x88, 0x8D, 0xBD, 0x96, 0xE0, 0xEC, 0x27,
       0x95, 0xDE, 0xED, 0xD5, 0x80, 0xFD, 0x7A, 0xD6, 0x3E, 0xC0, 0x79, 0x43, 0xF8, 0xCC, 0xE5, 0x8D,
       0xAC, 0x39, 0x48, 0xA8, 0xD0, 0xB2, 0x6F, 0xBC, 0x38, 0xCB, 0x6E, 0x1E, 0xE4, 0x7E, 0x0F, 0x71,
       0x62, 0x7C, 0x21, 0xC4, 0xD3, 0x25, 0x09, 0x55, 0x73, 0x44, 0x1D, 0x77, 0x69, 0x07, 0x7F, 0x0E,
       0xB0, 0x4B, 0xA6, 0x06, 0xC1, 0x6C, 0x87, 0xCF, 0x5D, 0xF5, 0x17, 0xDD, 0x36, 0x9E, 0x4E, 0x04,
       0x13, 0x02, 0xCD, 0xF7, 0x90, 0xB6, 0xA4, 0x29, 0x5A, 0x2E, 0x46, 0x18, 0x01, 0xF6, 0xDF, 0x4C,
       0xD1, 0x20, 0x50, 0x12, 0xC8, 0x3F, 0xEE, 0x56, 0xDB, 0x08, 0x15, 0x9C, 0x31, 0x0C, 0x5B, 0xBF,
       0x63, 0x16, 0x8B, 0x86, 0x98, 0x26, 0x93, 0xA5, 0x9B, 0xB8, 0x0B, 0xB3, 0x7B, 0x19, 0x61, 0x30,
       0xC3, 0x3A, 0xD2, 0xFE, 0x37, 0x3D, 0xCA, 0xA0, 0x2C, 0xB1, 0x97, 0x6A, 0x3B, 0x41, 0x40, 0xC9,
       0xCE, 0x2F, 0xAB, 0x8F, 0x4D, 0x82, 0xE7, 0x70, 0x58, 0xFC, 0x54, 0x1A, 0xE1, 0x5C, 0xA9, 0xF4,
       0x2B, 0x9D, 0xD9, 0x72, 0x5E, 0x85, 0xDC, 0xAD, 0x2D, 0x45, 0xE6, 0x35, 0xC7, 0x76, 0x28, 0xC6,
       0x9F, 0x9A, 0xD8, 0x10, 0x68, 0x84, 0xB5, 0xE9, 0xF3, 0xF9, 0xBB, 0xBA, 0xFA, 0xEF, 0x0D, 0x99,
       0xAA, 0xC5, 0x3C, 0xA7, 0x8C, 0xE2, 0x67, 0x0A, 0x03, 0xD7, 0x6B, 0x88, 0x5F, 0xAE, 0x91, 0xAF,
       0xB7, 0x1C, 0x42, 0x32, 0x96, 0xF2, 0x81, 0x8E, 0x24, 0x11, 0xF0, 0xEB, 0x05, 0x27, 0x51, 0x53,
       0x4A, 0xB4, 0x65, 0xF1, 0x22, 0x00, 0xEA, 0xB9, 0xA1, 0xE3, 0x83, 0x92, 0xE8, 0x52, 0x64, 0x34,
       0x57, 0xE0, 0x4F, 0xEC, 0x23, 0x6D, 0x14, 0x94, 0x49, 0x78, 0x1F, 0xFF, 0xA2, 0xDA, 0xA3, 0x89,
       0x47, 0x7D, 0xFB, 0xBE, 0x2A, 0x33, 0x60, 0xC2, 0x75, 0xD4, 0x1B, 0x59, 0x8A, 0x66, 0x74, 0xBD};

First key for decrypt first block with size 0x400
Second key for decrypt files data.

Code:

pBuffer[i] ^= pKey(1 or 2)[i % 0x100];

Data compressed by Zlib.

aluigi, posted Tue Mar 01, 2016 11:06 pm (11729)

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Well done Ekey.

Script:
http://aluigi.org/bms/rime_berta.bms