ExeCryptor 2.24 - 2.25 IAT Rebuilder
/*Script written by okdodo2007/03
Tested for execryptor v2.24/v2.25
Ollyice: Ignore all exceptions (add 0EEDFADE,C0000005,C000001E)
HideOD : Check HideNtDebugBit and ZwQueryInformationProcess(method2)
Test Environment : Ollyice 1.1 + HideOD
ODBGScript 1.51 under WINXP
Thanks :
kanxue - author of HideOD
hnhuqiong- author of ODbgScript 1.51
*/
data:
var hInstance
var codeseg
var vmseg
var ep
var oep
var esptmp
var _esp
var iat_start
var iat_end
var iat_cur
var addr
var c_gpa
var ibase
var iend
var temp
var tmp
var SBM
var TOA
var mbase
var msize
code:
bphwcall
gpa "SetBkMode","GDI32.dll"
mov SBM,$RESULT
REV SBM
mov SBM,$RESULT
itoa SBM
gpa "TextOutA","GDI32.dll"
mov TOA,$RESULT
REV TOA
mov TOA,$RESULT
itoa TOA
gpa "VirtualFree","kernel32.dll"
bphws $RESULT,"x"
run
bphwc $RESULT
rtu
gmi eip,MODULEBASE
mov hInstance,$RESULT
mov temp,$RESULT
add temp,3c
mov temp,
add temp,hInstance
add temp,28
mov temp,
add temp,hInstance
mov ep,temp
bc ep
gmemi eip,MEMORYBASE
mov codeseg,$RESULT
find $RESULT,#2ECC9D#
mov [$RESULT],#2ECC90#
gpa "EnumWindows","user32.dll"
mov [$RESULT],#8BC09C85C09D0578563412C20800#
gpa "CreateThread","kernel32.dll"
find $RESULT,#FF7518#
mov [$RESULT],#6A0490#
gpa "ZwCreateThread","ntdll.dll"
bp $RESULT
loop1:
esto
cmp eip,$RESULT
jne loop1
bc $RESULT
bp ep
bpep:
run
cmp eip,ep
je loop2
jmp bpep
loop2:
bc ep
mov esptmp,esp
sub esptmp,4
mov temp,codeseg
sub temp,1
gmemi temp,MEMORYBASE
mov vmseg,$RESULT
gmemi temp,MEMORYSIZE
bprm vmseg,$RESULT
loop3:
esto
mov tmp,eip
mov tmp,
cmp tmp,992C008A
jne loop5
mov oep,eax
sti
bprm oep,1
loop4:
esto
cmp eip,oep
jne loop4
jmp iat
loop5:
cmp esp,esptmp
jne loop3
iat:
bpmc
mov oep,eip
cmt eip,"OEP?"
gmi eip, MODULEBASE
mov ibase, $RESULT
mov temp,ibase
add temp,3C
mov temp,
add temp,ibase
add temp,50
mov iend,
add iend,ibase
mov count,0
mov iatbase,0
mov mbase,codeseg
hwloop:
sub mbase,1
cmp mbase,ibase
jb @iatinit
gmemi mbase,MEMORYBASE
mov mbase,$RESULT
gmemi msize,MEMORYSIZE
mov msize,$RESULT
mov temp,mbase
cmp iatbase,0
jne vmsegloop
eval #{SBM}#
find temp,$RESULT,msize
cmp 0,$RESULT
je findTextOutA
gmemi $RESULT,MEMORYBASE
mov iatbase,$RESULT
jmp vmsegloop
findTextOutA:
cmp iatbase,0
jne vmsegloop
eval #{TOA}#
find temp,$RESULT,msize
cmp 0,$RESULT
je vmsegloop
gmemi $RESULT,MEMORYBASE
mov iatbase,$RESULT
vmsegloop:
find temp,#03C28B000345FC#
mov tmp, $RESULT
cmp tmp,0
je check239
add tmp,7
bphws tmp,"x"
mov temp,tmp
mov c_gpa,tmp
inc count
jmp vmsegloop
check239:
cmp count,0
jne hwloop
mov mbase,codeseg
hwloop1:
sub mbase,1
cmp mbase,ibase
jb @iatinit
gmemi mbase,MEMORYBASE
mov mbase,$RESULT
mov temp,mbase
cmp iatbase,0
jne vmsegloop1
eval #{SBM}#
find temp,$RESULT,msize
cmp 0,$RESULT
je findTextOutA1
gmemi $RESULT,MEMORYBASE
mov iatbase,$RESULT
jmp vmsegloop1
findTextOutA1:
cmp iatbase,0
jne vmsegloop1
eval #{TOA}#
find temp,$RESULT,msize
cmp 0,$RESULT
je vmsegloop1
gmemi $RESULT,MEMORYBASE
mov iatbase,$RESULT
vmsegloop1:
find temp,#8B000345FC8945#
mov tmp, $RESULT
cmp tmp,0
je hwloop1
add tmp,5
bphws tmp,"x"
mov temp,tmp
mov c_gpa,tmp
jmp vmsegloop1
@iatinit:
cmp iatbase,0
je @error
gmemi iatbase,MEMORYSIZE
mov iat_end,$RESULT
add iat_end,iatbase
sub iat_end,4
mov _esp,esp
mov iat_cur,iatbase
sub iat_cur,4
mov count,0
@imprec:
add iat_cur,4
cmp iat_cur,iat_end
ja @end
mov addr,
cmp addr,0
je @imprec
cmp addr,ibase
jb @imprec
cmp count,0
jne @next
mov iat_start,iat_cur
log iat_start
@next:
cmp addr,iend
inc count
mov temp,iat_cur
ja @imprec
cmp addr,iatbase
jae next1
jmp next2
next1:
cmp addr,iat_end
jbe @end
next2:
mov esp,_esp
mov eip,addr
mov ,eip
esto
mov ,eax
jmp @imprec
@end:
bphwcall
mov iat_end,temp
log iat_end
mov eip,oep
eval "IAT Start Address: {iat_start} IAT End Address: {iat_end}"
msg $RESULT
msg "Script ends ok!Find the OEP manually and dump it~"
ret
@error:
bphwcall
msg "ERROR!"
ret
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