is there a way to root/hack T23a750 ?

[juusso]

What is this? monitor?

Aha.. Link to firmware is here.

Probably it is hackable like other D series arm devices...

Edit: Decrypted using samygo patcher 0.30

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C:\tmp>C:\tmp\SamyGO.py decrypt_all ./T-GASMDEUC
SamyGO Firmware Patcher v0.30 Alpha (c) 2010-2011 Erdem U. Altinyurt

                   -=BIG FAT WARNING!=-
            You can brick your TV with this tool!
Authors accept no responsibility about ANY DAMAGE on your devices!
         project home: http://www.SamyGO.tv

Firmware:  T-GASMDEUC v1006.1

AES Encrytped CI+ firmware detected.
Processing file appext.img.sec
secret key :  SHWJUH:xxxx
Decrypting AES...
Decrypting with  XOR Key :  T-GASMDEUC
Crypto package found, using fast XOR engine.

Calculated CRC : 0x74E5195B
CRC Validation passed


Processing file exe.img.sec
secret key :  SHWJUH:xxxx
Decrypting AES...
Decrypting with  XOR Key :  T-GASMDEUC
Crypto package found, using fast XOR engine.

Calculated CRC : 0x38283C3B
CRC Validation passed


Processing file Image.sec
secret key :  SHWJUH:xxxx
Decrypting AES...
Decrypting with  XOR Key :  T-GASMDEUC
Crypto package found, using fast XOR engine.

Calculated CRC : 0xFF2F577
CRC Validation passed


Processing file rootfs.img.sec
secret key :  SHWJUH:xxxx
Decrypting AES...
Decrypting with  XOR Key :  T-GASMDEUC
Crypto package found, using fast XOR engine.

Calculated CRC : 0x72723E59
CRC Validation passed


Processing file T-GENMDEUS1.bin.sec
secret key :  SHWJUH:xxxx
Decrypting AES...
Decrypting with  XOR Key :  T-GASMDEUC
Crypto package found, using fast XOR engine.

Calculated CRC : 0x2CA075D0
Traceback (most recent call last):
  File "C:\tmp\SamyGO.py", line 1207, in <module>
    DecryptAll( sys.argv[2] )
  File "C:\tmp\SamyGO.py", line 1020, in DecryptAll
    ValidCRC = int(ValidCRC[CRCstart:CRCstart+8], 16)
ValueError: invalid literal for int() with base 16: '283c3b*0'

C:\tmp>

Image:

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Offset      0  1  2  3  4  5  6  7   8  9  A  B  C  D  E  F

00000020   4C 69 6E 75 78 2D 32 2E  36 2E 33 30 2E 39 00 00   Linux-2.6.30.9  

We don`t have any D series rooted monitor here. Even don`t know much about those. But probably you could get console over ExLink... and start research it. With help of us.