# This is a python script. You need a Python interpreter to run it. # For example, ActiveState Python, which exists for windows. # Changelog # 0.01 - Initial version # 0.02 - Support more eReader files. Support bold text and links. Fix PML decoder parsing bug. # 0.03 - Fix incorrect variable usage at one place. # 0.03b - Add support for type 259 import struct, binascii, zlib, os, sha, sys, os.path ECB = 0 CBC = 1 class Des: __pc1 = [56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3] __left_rotations = [1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1] __pc2 = [13, 16, 10, 23, 0, 4,2, 27, 14, 5, 20, 9, 22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1, 40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47, 43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31] __ip = [57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7, 56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6] __expansion_table = [31, 0, 1, 2, 3, 4, 3, 4, 5, 6, 7, 8, 7, 8, 9, 10, 11, 12,11, 12, 13, 14, 15, 16, 15, 16, 17, 18, 19, 20,19, 20, 21, 22, 23, 24, 23, 24, 25, 26, 27, 28,27, 28, 29, 30, 31, 0] __sbox = [[14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7, 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8, 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0, 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13], [15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10, 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5, 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15, 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9], [10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8, 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1, 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7, 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12], [7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15, 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9, 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4, 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14], [2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9, 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6, 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14, 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3], [12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11, 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8, 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6, 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13], [4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1, 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6, 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2, 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12], [13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7, 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2, 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8, 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11],] __p = [15, 6, 19, 20, 28, 11,27, 16, 0, 14, 22, 25, 4, 17, 30, 9, 1, 7,23,13, 31, 26, 2, 8,18, 12, 29, 5, 21, 10,3, 24] __fp = [39, 7, 47, 15, 55, 23, 63, 31,38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29,36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27,34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25,32, 0, 40, 8, 48, 16, 56, 24] # Type of crypting being done ENCRYPT = 0x00 DECRYPT = 0x01 def __init__(self, key, mode=ECB, IV=None): if len(key) != 8: raise ValueError("Invalid DES key size. Key must be exactly 8 bytes long.") self.block_size = 8 self.key_size = 8 self.__padding = '' self.setMode(mode) if IV: self.setIV(IV) self.L = [] self.R = [] self.Kn = [ [0] * 48 ] * 16 # 16 48-bit keys (K1 - K16) self.final = [] self.setKey(key) def getKey(self): return self.__key def setKey(self, key): self.__key = key self.__create_sub_keys() def getMode(self): return self.__mode def setMode(self, mode): self.__mode = mode def getIV(self): return self.__iv def setIV(self, IV): if not IV or len(IV) != self.block_size: raise ValueError("Invalid Initial Value (IV), must be a multiple of " + str(self.block_size) + " bytes") self.__iv = IV def getPadding(self): return self.__padding def __String_to_BitList(self, data): l = len(data) * 8 result = [0] * l pos = 0 for c in data: i = 7 ch = ord(c) while i >= 0: if ch & (1 << i) != 0: result[pos] = 1 else: result[pos] = 0 pos += 1 i -= 1 return result def __BitList_to_String(self, data): result = '' pos = 0 c = 0 while pos < len(data): c += data[pos] << (7 - (pos % 8)) if (pos % 8) == 7: result += chr(c) c = 0 pos += 1 return result def __permutate(self, table, block): return map(lambda x: block[x], table) def __create_sub_keys(self): key = self.__permutate(Des.__pc1, self.__String_to_BitList(self.getKey())) i = 0 self.L = key[:28] self.R = key[28:] while i < 16: j = 0 while j < Des.__left_rotations[i]: self.L.append(self.L[0]) del self.L[0] self.R.append(self.R[0]) del self.R[0] j += 1 self.Kn[i] = self.__permutate(Des.__pc2, self.L + self.R) i += 1 def __des_crypt(self, block, crypt_type): block = self.__permutate(Des.__ip, block) self.L = block[:32] self.R = block[32:] if crypt_type == Des.ENCRYPT: iteration = 0 iteration_adjustment = 1 else: iteration = 15 iteration_adjustment = -1 i = 0 while i < 16: tempR = self.R[:] self.R = self.__permutate(Des.__expansion_table, self.R) self.R = map(lambda x, y: x ^ y, self.R, self.Kn[iteration]) B = [self.R[:6], self.R[6:12], self.R[12:18], self.R[18:24], self.R[24:30], self.R[30:36], self.R[36:42], self.R[42:]] j = 0 Bn = [0] * 32 pos = 0 while j < 8: m = (B[j][0] << 1) + B[j][5] n = (B[j][1] << 3) + (B[j][2] << 2) + (B[j][3] << 1) + B[j][4] v = Des.__sbox[j][(m << 4) + n] Bn[pos] = (v & 8) >> 3 Bn[pos + 1] = (v & 4) >> 2 Bn[pos + 2] = (v & 2) >> 1 Bn[pos + 3] = v & 1 pos += 4 j += 1 self.R = self.__permutate(Des.__p, Bn) self.R = map(lambda x, y: x ^ y, self.R, self.L) self.L = tempR i += 1 iteration += iteration_adjustment self.final = self.__permutate(Des.__fp, self.R + self.L) return self.final def crypt(self, data, crypt_type): if not data: return '' if len(data) % self.block_size != 0: if crypt_type == Des.DECRYPT: # Decryption must work on 8 byte blocks raise ValueError("Invalid data length, data must be a multiple of " + str(self.block_size) + " bytes\n.") if not self.getPadding(): raise ValueError("Invalid data length, data must be a multiple of " + str(self.block_size) + " bytes\n. Try setting the optional padding character") else: data += (self.block_size - (len(data) % self.block_size)) * self.getPadding() if self.getMode() == CBC: if self.getIV(): iv = self.__String_to_BitList(self.getIV()) else: raise ValueError("For CBC mode, you must supply the Initial Value (IV) for ciphering") i = 0 dict = {} result = [] while i < len(data): block = self.__String_to_BitList(data[i:i+8]) if self.getMode() == CBC: if crypt_type == Des.ENCRYPT: block = map(lambda x, y: x ^ y, block, iv) processed_block = self.__des_crypt(block, crypt_type) if crypt_type == Des.DECRYPT: processed_block = map(lambda x, y: x ^ y, processed_block, iv) iv = block else: iv = processed_block else: processed_block = self.__des_crypt(block, crypt_type) result.append(self.__BitList_to_String(processed_block)) i += 8 if crypt_type == Des.DECRYPT and self.getPadding(): s = result[-1] while s[-1] == self.getPadding(): s = s[:-1] result[-1] = s return ''.join(result) def encrypt(self, data, pad=''): self.__padding = pad return self.crypt(data, Des.ENCRYPT) def decrypt(self, data, pad=''): self.__padding = pad return self.crypt(data, Des.DECRYPT) class Sectionizer: def __init__(self, filename, ident): self.contents = file(filename, 'rb').read() self.header = self.contents[0:72] self.num_sections, = struct.unpack('>H', self.contents[76:78]) if self.header[0x3C:0x3C+8] != ident: raise ValueError('Invalid file format') self.sections = [] for i in xrange(self.num_sections): offset, a1,a2,a3,a4 = struct.unpack('>LBBBB', self.contents[78+i*8:78+i*8+8]) flags, val = a1, a2<<16|a3<<8|a4 self.sections.append( (offset, flags, val) ) def loadSection(self, section): if section + 1 == self.num_sections: end_off = len(self.contents) else: end_off = self.sections[section + 1][0] off = self.sections[section][0] return self.contents[off:end_off] def sanitizeFileName(s): r = '' for c in s.lower(): if c in "abcdefghijklmnopqrstuvwxyz0123456789_.-": r += c return r def fixKey(key): def fixByte(b): return b ^ ((b ^ (b<<1) ^ (b<<2) ^ (b<<3) ^ (b<<4) ^ (b<<5) ^ (b<<6) ^ (b<<7) ^ 0x80) & 0x80) return "".join([chr(fixByte(ord(a))) for a in key]) class EreaderProcessor: def __init__(self, section_reader, username, creditcard): self.section_reader = section_reader data = section_reader(0) version, = struct.unpack('>H', data[0:2]) if version != 272 and version != 260 and version != 259: raise ValueError('incorrect eReader version %d (error 1)' % version) data = section_reader(1) self.data = data des = Des(fixKey(data[0:8])) cookie_shuf, cookie_size = struct.unpack('>LL', des.decrypt(data[-8:])) if cookie_shuf < 3 or cookie_shuf > 0x14 or cookie_size < 0xf0 or cookie_size > 0x200: raise ValueError('incorrect eReader version (error 2)') input = des.decrypt(data[-cookie_size:]) def unshuff(data, shuf): r = [''] * len(data) j = 0 for i in xrange(len(data)): j = (j + shuf) % len(data) r[j] = data[i] assert len("".join(r)) == len(data) return "".join(r) r = unshuff(input[0:-8], cookie_shuf) def fixUsername(s): r = '' for c in s.lower(): if (c >= 'a' and c <= 'z' or c >= '0' and c <= '9'): r += c return r user_key = struct.pack('>LL', binascii.crc32(fixUsername(username)) & 0xffffffff, binascii.crc32(creditcard[-8:])& 0xffffffff) drm_sub_version = struct.unpack('>H', r[0:2])[0] self.num_text_pages = struct.unpack('>H', r[2:4])[0] - 1 self.num_image_pages = struct.unpack('>H', r[26:26+2])[0] self.first_image_page = struct.unpack('>H', r[24:24+2])[0] self.flags = struct.unpack('>L', r[4:8])[0] reqd_flags = (1<<9) | (1<<7) | (1<<10) if (self.flags & reqd_flags) != reqd_flags: print "Flags: 0x%X" % self.flags raise ValueError('incompatible eReader file') des = Des(fixKey(user_key)) if version == 259: if drm_sub_version != 7: raise ValueError('incorrect eReader version %d (error 3)' % drm_sub_version) encrypted_key_sha = r[44:44+20] encrypted_key = r[64:64+8] elif version == 260: if drm_sub_version != 13: raise ValueError('incorrect eReader version %d (error 3)' % drm_sub_version) encrypted_key = r[44:44+8] encrypted_key_sha = r[52:52+20] elif version == 272: encrypted_key = r[172:172+8] encrypted_key_sha = r[56:56+20] self.content_key = des.decrypt(encrypted_key) if sha.new(self.content_key).digest() != encrypted_key_sha: raise ValueError('Incorrect Name and/or Credit Card') def getNumImages(self): return self.num_image_pages def getImage(self, i): sect = self.section_reader(self.first_image_page + i) name = sect[4:4+32].strip('\0') data = sect[62:] return sanitizeFileName(name), data def getText(self): des = Des(fixKey(self.content_key)) r = '' for i in xrange(self.num_text_pages): r += zlib.decompress(des.decrypt(self.section_reader(1 + i))) return r class PmlConverter: def __init__(self, s): self.s = s self.pos = 0 def nextOptAttr(self): p = self.pos if self.s[p:p+2] != '="': return None r = '' p += 2 while self.s[p] != '"': r += self.s[p] p += 1 self.pos = p + 1 return r def next(self): p = self.pos if p >= len(self.s): return None if self.s[p] != '\\': res = self.s.find('\\', p) if res == -1: res = len(self.s) self.pos = res return self.s[p : res], None, None c = self.s[p+1] if c in 'pxcriuovtnsblBk-lI\\d': self.pos = p + 2 return None, c, None if c in 'TwmqQ': self.pos = p + 2 return None, c, self.nextOptAttr() if c == 'a': self.pos = p + 5 return None, c, int(self.s[p+2:p+5]) if c == 'U': self.pos = p + 6 return None, c, int(self.s[p+2:p+6], 16) c = self.s[p+1:p+1+2] if c in ('X0','X1','X2','X3','X4','Sp','Sb'): self.pos = p + 3 return None, c, None if c in ('C0','C1','C2','C3','C4','Fn','Sd'): self.pos = p + 3 return None, c, self.nextOptAttr() print "unknown escape code %s" % c self.pos = p + 1 return None, None, None def linkPrinter(link): return '' % link html_tags = { 'c' : ('

', '

'), 'r' : ('

', '

'), 'i' : ('', ''), 'u' : ('', ''), 'b' : ('', ''), 'B' : ('', ''), 'o' : ('', ''), 'v' : (''), 't' : ('', ''), 'Sb' : ('', ''), 'Sp' : ('', ''), 'X0' : ('

', '

'), 'X1' : ('

', '

'), 'X2' : ('

', '

'), 'X3' : ('

', '

'), 'X4' : ('
', '
'), 'l' : ('', ''), 'q' : (linkPrinter, '
'), } html_one_tags = { 'p' : '

' } pml_chars = { 160 : ' ',130 : '—',131: 'ƒ',132: '„', 133: '…',134: '†',135: '‡',138: 'Š', 139: '‹',140: 'Œ',145: '‘',146: '’', 147: '“',148: '”',149: '•',150: '–', 151: '—',153: '™',154: 'š',155: '›', 156: 'œ',159: 'Ÿ' } def process(self): final = '\n' in_tags = [] def makeText(s): s = s.replace('&', '&') #s = s.replace('"', '"') s = s.replace('<', '<') s = s.replace('>', '>') s = s.replace('\n', '
\n') return s while True: r = self.next() if not r: break text, cmd, attr = r if text: final += makeText(text) if cmd: def getTag(ti, end): cmd, attr = ti r = self.html_tags[cmd][end] if type(r) != str: r = r(attr) return r if cmd in self.html_tags: pair = (cmd, attr) if cmd not in [a for (a,b) in in_tags]: final += getTag(pair, False) in_tags.append(pair) else: j = len(in_tags) while True: j = j - 1 final += getTag(in_tags[j], True) if in_tags[j][0] == cmd: break del in_tags[j] while j < len(in_tags): final += getTag(in_tags[j], False) j = j + 1 if cmd in self.html_one_tags: final += self.html_one_tags[cmd] if cmd == 'm': final += '' % attr if cmd == 'Q': final += ' ' % attr if cmd == 'a': final += self.pml_chars.get(attr, '&#%d;' % attr) if cmd == 'U': final += '&#%d;' % attr final += '\n' while True: s = final.replace('
\n
\n
\n', '
\n
\n') if s == final: break final = s return final def convertEreaderToHtml(infile, name, cc, outdir): if not os.path.exists(outdir): os.makedirs(outdir) sect = Sectionizer(infile, 'PNRdPPrs') er = EreaderProcessor(sect.loadSection, name, cc) for i in xrange(er.getNumImages()): name, contents = er.getImage(i) file(os.path.join(outdir, name), 'wb').write(contents) pml = PmlConverter(er.getText()) file(os.path.join(outdir, 'book.html'),'wb').write(pml.process()) print "eReader2Html v0.03b, derived from:" print "\teReader2Html v0.03. Copyright (c) 2008 The Dark Reverser" print "with enhancement by DeBockle" if len(sys.argv)!=5: print "Converts eReader books to HTML" print "Usage:" print " ereader2html infile.pdb outdir \"your name\" credit_card_number " print "Note:" print " It's enough to enter the last 8 digits of the credit card number" else: infile, outdir, name, cc = sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4] try: print "Processing...", convertEreaderToHtml(infile, name, cc, outdir) print "done" except ValueError, e: print "Error: %s" % e