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<?php $tempToken = "1b76364f-ce5a-435a-94ad-8235e379c452972e0d26-c8da-4289-ab14-8c01165106e4"; $clearText = "AuthToken=1b76364f-ce5a-435a-94ad-8235e379c452972e0d26-c8da-4289-ab14-8c01165106e4&PayerId=7197202092114251&PaymentProcessType=CreditCard&ProcessMethod=None&PaymentMethodStorageOption=None&ReturnURL=https://il01addproc.propay.com:443/Return.aspx "; // $tempToken = "1f25d31c-e8fe-4d68-be73-f7b439bfa0a329e90de6-4e93-4374-8633-22cef77467f5"; // $clearText = "AuthToken=1f25d31c-e8fe-4d68-be73-f7b439bfa0a329e90de6-4e93-4374-8633-22cef77467f5&PayerID=2833955147881261&Amount=10.00&CurrencyCode=USD&ProcessMethod=Capture&PaymentMethodStorageOption=None&InvoiceNumber=Invoice123&Comment1=comment1&Comment2=comment2&echo=echotest&ReturnURL=https://il01addproc.propay.com:443/Return.aspx&ProfileId=3351&PaymentProcessType=CreditCard&StandardEntryClassCode=&DisplayMessage=True&Protected=False"; // Encode the TempToken string in UTF-8 $encodedTempToken = utf8_encode($tempToken); // Get the MD5 hash of $encodedTempToken in raw binary format with a length of 16 $md5Hash = md5($encodedTempToken, TRUE); // Encode the name value string in UTF-8 $encodedNameValueString = utf8_encode($clearText); // Pad the name value string using pkcs5_pad $blocksize = mcrypt_get_block_size('rijndael_128', 'cbc'); $pad = $blocksize - (strlen($encodedNameValueString) % $blocksize); $encodedNameValueString = $encodedNameValueString . str_repeat("M", $pad); echo $encodedNameValueString; echo "\n"; // Use AES-128 encryption to encrypt the name value string with the key and IV both being equal to the MD5 hash of $encodedTempToken $aes128 = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $md5Hash, $encodedNameValueString, MCRYPT_MODE_CBC, $md5Hash); // Use Base64 encoding to send the resulting bytes of the encrypted name value string $settingsCipher = base64_encode($aes128); echo $settingsCipher;
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/BVjo8
function name:  (null)
number of ops:  48
compiled vars:  !0 = $tempToken, !1 = $clearText, !2 = $encodedTempToken, !3 = $md5Hash, !4 = $encodedNameValueString, !5 = $blocksize, !6 = $pad, !7 = $aes128, !8 = $settingsCipher
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   5     0  E >   ASSIGN                                                   !0, '1b76364f-ce5a-435a-94ad-8235e379c452972e0d26-c8da-4289-ab14-8c01165106e4'
   6     1        ASSIGN                                                   !1, 'AuthToken%3D1b76364f-ce5a-435a-94ad-8235e379c452972e0d26-c8da-4289-ab14-8c01165106e4%26PayerId%3D7197202092114251%26PaymentProcessType%3DCreditCard%26ProcessMethod%3DNone%26PaymentMethodStorageOption%3DNone%26ReturnURL%3Dhttps%3A%2F%2Fil01addproc.propay.com%3A443%2FReturn.aspx%0B%0B%0B%0B%0B%0B%0B%0B%0B%0B%0B'
  13     2        INIT_FCALL                                               'utf8_encode'
         3        SEND_VAR                                                 !0
         4        DO_ICALL                                         $11     
         5        ASSIGN                                                   !2, $11
  16     6        INIT_FCALL                                               'md5'
         7        SEND_VAR                                                 !2
         8        SEND_VAL                                                 <true>
         9        DO_ICALL                                         $13     
        10        ASSIGN                                                   !3, $13
  19    11        INIT_FCALL                                               'utf8_encode'
        12        SEND_VAR                                                 !1
        13        DO_ICALL                                         $15     
        14        ASSIGN                                                   !4, $15
  22    15        INIT_FCALL                                               'mcrypt_get_block_size'
        16        SEND_VAL                                                 'rijndael_128'
        17        SEND_VAL                                                 'cbc'
        18        DO_ICALL                                         $17     
        19        ASSIGN                                                   !5, $17
  23    20        STRLEN                                           ~19     !4
        21        MOD                                              ~20     ~19, !5
        22        SUB                                              ~21     !5, ~20
        23        ASSIGN                                                   !6, ~21
  24    24        INIT_FCALL                                               'str_repeat'
        25        SEND_VAL                                                 'M'
        26        SEND_VAR                                                 !6
        27        DO_ICALL                                         $23     
        28        CONCAT                                           ~24     !4, $23
        29        ASSIGN                                                   !4, ~24
  26    30        ECHO                                                     !4
  27    31        ECHO                                                     '%0A'
  30    32        INIT_FCALL                                               'mcrypt_encrypt'
        33        FETCH_CONSTANT                                   ~26     'MCRYPT_RIJNDAEL_128'
        34        SEND_VAL                                                 ~26
        35        SEND_VAR                                                 !3
        36        SEND_VAR                                                 !4
        37        FETCH_CONSTANT                                   ~27     'MCRYPT_MODE_CBC'
        38        SEND_VAL                                                 ~27
        39        SEND_VAR                                                 !3
        40        DO_ICALL                                         $28     
        41        ASSIGN                                                   !7, $28
  33    42        INIT_FCALL                                               'base64_encode'
        43        SEND_VAR                                                 !7
        44        DO_ICALL                                         $30     
        45        ASSIGN                                                   !8, $30
  35    46        ECHO                                                     !8
        47      > RETURN                                                   1

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