Run the TurboTax installer until the error dialog pops up. Click the close button since you can't go any further. Now press WinKey-R and type %TEMP% to go to the temporary folder. Copy the ckz_XXXX folder to the desktop. Select the Setup.exe file and press CTRL-C then CTRL-V to make a copy/backup.
Now use radare as follows:
Command | Description |
---|---|
r2 -A -w SetUp.exe | analyze and allow writing (thanks to @SureshotM6) |
axt str.CurrentVersion | look for references to this string |
s fcn.0041cc60 | seek to the function's location that was found in the previous command |
VV | Use visual mode |
p | optionally show addresses |
x | jump to xref |
l | seek to ref/xref |
( | reverse the opcode |
exit from visual mode | |
q | quit radare |
Now you can click on "Setup.exe" and install without error. (Note that the Verified publisher says "unknown" even though we only changed one byte.)
Paste these commands into a regular terminal window:
cd %TEMP%
cd ckz_XXXX
powershell
Now paste these command into a powershell window:
$bytes = [System.IO.File]::ReadAllBytes("Setup.exe")
$offset = 120746
$bytes[$offset] = 0x75
[System.IO.File]::WriteAllBytes("Setup.exe", $bytes)
exit
Open the Setup.exe file and at offset 0x0001d7aa change the 74 to 75. Save it and you are done. Remember this offset only works with the version of TurboTax Deluxe mentioned above. If you have another version, follow the radare instructions above to find the right offset.
DISCLAIMER: This is for educational purposes only. Use TurboTax in Windows 7 at you own risk. It most likely will work just fine, but Intuit doesn't want to support older versions of Windows.
OK. I'm no great expert like the folks who worked all this out - so I can't provide foolproof radare2 instructions. However - a hex editor and trial and error worked for me. I searched for 85C07432 in setup.exe of TurboTax 2023 deluxe in a hexeditor. This pattern occurred four times in my setup.exe. Change the second instance to 85C0EB32. This pattern starts at offset 000178fb and the '74' which needs changing to 'eb' is therefore at offset 000178fd And Bob's your uncle.
PS I imagine there is more work to do to fix state taxes - but I just did those manually last year - it didn't take long because State is much simpler than Federal.
UPDATE Well maybe I spoke too soon. This allowed me to complete installation, but I am getting an error when actually running the program - so maybe more is required :-(