TwMs v226.3 CRC MSCRC

zzsf_09

//TwMs v226.3 CRC MSCRC
//單MSCRC ,沒有BCCRC的情況下會觸發D1060104檢測到CE D1010201 BlackCipher檢測到MS內存被修改
//mscrc1,0489AB59   reg edx
//mscrc2,045C958F  reg ebx


[Enable]
registersymbol(memcopy)
alloc(memcopy,256)
registersymbol(mscem)
alloc(mscem,95418016)//5AE7000‬+xx
registersymbol(memaddr)
alloc(memaddr,4)
label(copyend)
label(loopcopy)
createthread(memcopy)

memaddr:
dd mscem

memcopy:
mov eax,00401000
lea ecx,[mscem]

loopcopy:
xor ebx,ebx
movzx ebx,byte ptr [eax]
mov byte ptr [ecx],bl
inc eax
inc ecx
cmp eax,00401000+5AE7000
jg copyend
jmp loopcopy

copyend:
lea ebx,[mscem]
sub ebx,00401000
add ebx,0489AB59//FIXjmp
cmp [ebx],5B5A0202
je +d
mov [ebx],5B5A0202
mov [ebx+4],AAB35366


lea ebx,[mscem]
sub ebx,00401000
add ebx,045C958F//FIXjmp
cmp [ebx],1A011B8B
je +d
mov [ebx],1A011B8B
mov [ebx+4],04E6819C



ret



registersymbol(mscrc1)
alloc(mscrc1,512)
label(mscrc1end)

mscrc1:
cmp edx,00401000
jb mscrc1end
cmp edx,00401000+5AE7000
ja mscrc1end
add edx,[memaddr]
sub edx,00401000

jmp mscrc1end

mscrc1end:
db 02 02 5A 5B 66 53 B3 AA
jmp 0489AB59+8

0489AB59:        
jmp mscrc1




registersymbol(mscrc2)
alloc(mscrc2,512)
label(mscrc2end)

mscrc2:


cmp ebx,00401000
jb mscrc2end
cmp ebx,00401000+5AE7000
ja mscrc2end
add ebx,[memaddr]
sub ebx,00401000


jmp mscrc2end

mscrc2end:
db 8B 1B 01 1A 9C
jmp 045C958F+5

045C958F:
jmp mscrc2

[Disable]