CHAPTER 68. WINDOWS NT CHAPTER 68. WINDOWS NT
sub rsp, 32
mov rbp, rdx
$LN10@main$filt$:
mov rax, QWORD PTR [rcx]
xor ecx, ecx
cmp DWORD PTR [rax], -1073741819; c0000005H
sete cl
mov eax, ecx
$LN12@main$filt$:
add rsp, 32
pop rbp
ret 0
int 3
main$filt$0 ENDP
main$filt$1 PROC
push rbp
sub rsp, 32
mov rbp, rdx
$LN6@main$filt$:
mov rax, QWORD PTR [rcx]
mov rdx, rcx
mov ecx, DWORD PTR [rax]
call filter_user_exceptions
npad 1 ; align next label
$LN8@main$filt$:
add rsp, 32
pop rbp
ret 0
int 3
main$filt$1 ENDP
text$x ENDS
_TEXT SEGMENT
code$ = 48
ep$ = 56
filter_user_exceptions PROC
$LN6:
push rbx
sub rsp, 32
mov ebx, ecx
mov edx, ecx
lea rcx, OFFSET FLAT:$SG86277 ; 'in filter. code=0x%08X'
call printf
cmp ebx, 1122867; 00112233H
jne SHORT $LN2@filter_use
lea rcx, OFFSET FLAT:$SG86279 ; 'yes, that is our exception'
call printf
mov eax, 1
add rsp, 32
pop rbx
ret 0
$LN2@filter_use:
lea rcx, OFFSET FLAT:$SG86281 ; 'not our exception'
call printf
xor eax, eax
add rsp, 32
pop rbx
ret 0
filter_user_exceptions ENDP
_TEXT ENDS
Read [Sko12] for more detailed information about this.
Aside from exception information,.pdatais a section that contains the addresses of almost all function starts and ends,
hence it may be useful for a tools targeted at automated analysis.