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fs/gs

Started by JK, July 24, 2020, 06:42:47 AM

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JK

July 24, 2020, 06:42:47 AM
While in 64 bit this works:

Code Select

  mov qword ptr rax, gs:[...] 
  mov gs:[...], rax 


this 32 bit code doesn´t:

Code Select

  mov dword ptr eax, fs:[...]
  mov fs:[...], eax


What am i doing wrong? I want to read/write data from/to the TEB.


JK

nidud

#1
July 24, 2020, 07:06:44 AM Last Edit: February 26, 2022, 04:06:14 AM by nidud
deleted

JK

#2
July 24, 2020, 08:04:48 PM
Ok - thanks, indeed this solves the problem!

Quotefs is assumed to error ...

just to understand the background - why?
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