Jump to content
Tuts 4 You

V2m 1.0 problem fix with IDA Pro

Recommended Posts

Yeah, today i've discovered it when most of tPORt releases, even with v2m's in it (with libv2 1.0 mostly), don't work on Vista and higher, so if u wanna test these releases/having some experience with them but ur just lazy too open them up in XP (or simply you don't have it), here's how i did it :

I firstly opened one of tPORt's releases with v2m in it i have in my collection with IDA pro , then i've analyzed the whole EXE file . The v2m initialization must start with DirectSoundCreate function most of it , from which it was called from this :

sub_406E82      proc near               ; CODE XREF: sub_403DEA+38^p
PS_____:00406E82 var_9C          = dword ptr -9Ch
PS_____:00406E82 arg_0           = dword ptr  4
PS_____:00406E82 arg_4           = dword ptr  8
PS_____:00406E82 arg_8           = dword ptr  0Ch
PS_____:00406E82                 pusha
PS_____:00406E83                 mov     ebx, offset dword_6722B4
PS_____:00406E88                 mov     ecx, 20082h
PS_____:00406E8D                 mov     edi, ebx
PS_____:00406E8F                 xor     eax, eax
PS_____:00406E91                 rep stosb
PS_____:00406E93                 mov     esi, [esp+20h+arg_0]
PS_____:00406E97                 mov     [ebx+0Ch], esi
PS_____:00406E9A                 mov     esi, [esp+20h+arg_4]
PS_____:00406E9E                 mov     [ebx+10h], esi
PS_____:00406EA1                 lea     esi, [ebx+8]
PS_____:00406EA4                 mov     [esi], eax
PS_____:00406EA6                 push    eax             ; pUnkOuter
PS_____:00406EA7                 push    esi             ; ppDS
PS_____:00406EA8                 push    eax             ; pcGuidDevice
PS_____:00406EA9                 call    DirectSoundCreate
PS_____:00406EAE                 mov     esi, [esi]
PS_____:00406EB0                 or      esi, esi
PS_____:00406EB2                 jz      short loc_406ED5
PS_____:00406EB4                 mov     al, 2
PS_____:00406EB6                 push    eax
PS_____:00406EB7                 push    [esp+24h+arg_8]
PS_____:00406EBB                 push    esi
PS_____:00406EBC                 mov     edi, [esi]
PS_____:00406EBE                 call    dword ptr [edi+18h]
PS_____:00406EC1                 or      eax, eax
PS_____:00406EC3                 jnz     short loc_406ED5
PS_____:00406EC5                 push    eax
PS_____:00406EC6                 lea     ebp, [ebx+4]
PS_____:00406EC9                 push    ebp
PS_____:00406ECA                 push    offset dword_407194
PS_____:00406ECF                 push    esi
PS_____:00406ED0                 call    dword ptr [edi+0Ch]
PS_____:00406ED3                 or      eax, eax
PS_____:00406ED5 loc_406ED5:                             ; CODE XREF: sub_406E82+30^j
PS_____:00406ED5                                         ; sub_406E82+41^j
PS_____:00406ED5                 jnz     short loc_406EE6
PS_____:00406ED7                 push    eax
PS_____:00406ED8                 lea     edx, [ebx]
PS_____:00406EDA                 push    edx
PS_____:00406EDB                 push    offset dword_407180
PS_____:00406EE0                 push    esi
PS_____:00406EE1                 call    dword ptr [edi+0Ch]
PS_____:00406EE4                 or      eax, eax
PS_____:00406EE6 loc_406EE6:                             ; CODE XREF: sub_406E82:loc_406ED5^j
PS_____:00406EE6                                         ; sub_406E82+A6ˇj
PS_____:00406EE6                 jnz     loc_406FB4
PS_____:00406EEC                 lea     edi, [ebx+70h]
PS_____:00406EEF                 push    edi
PS_____:00406EF0                 lea     esi, word_40716E
PS_____:00406EF6                 lea     ecx, [eax+12h]
PS_____:00406EF9                 rep movsb
PS_____:00406EFB                 mov     esi, [ebp+0]
PS_____:00406EFE                 push    esi
PS_____:00406EFF                 mov     edi, [esi]
PS_____:00406F01                 call    dword ptr [edi+38h]
PS_____:00406F04                 xor     esi, esi
PS_____:00406F06                 push    2
PS_____:00406F0B                 lea     edx, [ebx+2Ch]
PS_____:00406F0E                 push    edx
PS_____:00406F0F                 lea     edx, [ebx+28h]
PS_____:00406F12                 push    edx
PS_____:00406F13                 lea     edx, [ebx+24h]
PS_____:00406F16                 push    edx
PS_____:00406F17                 lea     edx, [ebx+20h]
PS_____:00406F1A                 push    edx
PS_____:00406F1B                 push    esi
PS_____:00406F1C                 push    esi
PS_____:00406F1D                 mov     ebp, [ebx]
PS_____:00406F1F                 mov     esi, [ebp+0]
PS_____:00406F22                 push    ebp
PS_____:00406F23                 call    dword ptr [esi+2Ch]
PS_____:00406F26                 or      eax, eax
PS_____:00406F28                 jnz     short loc_406EE6
PS_____:00406F2A                 mov     ecx, [ebx+24h]
PS_____:00406F2D                 mov     edi, [ebx+20h]
PS_____:00406F30                 rep stosb
PS_____:00406F32                 mov     ecx, [ebx+2Ch]
PS_____:00406F35                 mov     edi, [ebx+28h]
PS_____:00406F38                 rep stosb
PS_____:00406F3A                 push    dword ptr [ebx+2Ch]
PS_____:00406F3D                 push    dword ptr [ebx+28h]
PS_____:00406F40                 push    dword ptr [ebx+24h]
PS_____:00406F43                 push    dword ptr [ebx+20h]
PS_____:00406F46                 push    ebp
PS_____:00406F47                 call    dword ptr [esi+4Ch]
PS_____:00406F4A                 or      eax, eax
PS_____:00406F4C                 jnz     short loc_406FB4
PS_____:00406F4E                 mov     dword ptr [ebx+68h], 0FFFF0000h
PS_____:00406F55                 mov     dword ptr [ebx+6Ch], 0FFFF0000h
PS_____:00406F5C                 xor     eax, eax
PS_____:00406F5E                 push    eax             ; lpName
PS_____:00406F5F                 push    eax             ; bInitialState
PS_____:00406F60                 push    eax             ; bManualReset
PS_____:00406F61                 push    eax             ; lpEventAttributes
PS_____:00406F62                 call    CreateEventA
PS_____:00406F67                 mov     [ebx+40h], eax
PS_____:00406F6A                 lea     eax, [ebx+48h]
PS_____:00406F6D                 push    eax             ; lpCriticalSection
PS_____:00406F6E                 call    InitializeCriticalSection
PS_____:00406F73                 xor     eax, eax
PS_____:00406F75                 inc     al
PS_____:00406F77                 push    eax
PS_____:00406F78                 push    1
PS_____:00406F7D                 dec     al
PS_____:00406F7F                 push    eax
PS_____:00406F80                 push    eax
PS_____:00406F81                 push    ebp             ; nPriority
PS_____:00406F82                 call    dword ptr [esi+30h]
PS_____:00406F85                 or      eax, eax
PS_____:00406F87                 jnz     short loc_406FB4
PS_____:00406F89                 fld     flt_406E50
PS_____:00406F8F                 fstp    dword ptr [ebx+14h]
PS_____:00406F92                 lea     edx, [ebx+3Ch]
PS_____:00406F95                 push    edx             ; lpThreadId
PS_____:00406F96                 push    eax             ; dwCreationFlags
PS_____:00406F97                 push    eax             ; lpParameter
PS_____:00406F98                 push    offset sub_407009 ; lpStartAddress
PS_____:00406F9D                 push    eax             ; dwStackSize
PS_____:00406F9E                 push    eax             ; lpThreadAttributes
PS_____:00406F9F                 call    CreateThread
PS_____:00406FA4                 mov     [ebx+1Ch], eax
PS_____:00406FA7                 inc     [esp+9Ch+var_9C]
PS_____:00406FAA                 push    eax             ; hThread
PS_____:00406FAB                 call    SetThreadPriority
PS_____:00406FB0                 popa
PS_____:00406FB1                 stc
PS_____:00406FB2                 jmp     short loc_406FBB
PS_____:00406FB4 ; ---------------------------------------------------------------------------
PS_____:00406FB4 loc_406FB4:                             ; CODE XREF: sub_406E82:loc_406EE6^j
PS_____:00406FB4                                         ; sub_406E82+CA^j ...
PS_____:00406FB4                 call    sub_406FC0
PS_____:00406FB9                 popa
PS_____:00406FBA                 clc
PS_____:00406FBB loc_406FBB:                             ; CODE XREF: sub_406E82+130^j
PS_____:00406FBB                 sbb     eax, eax
PS_____:00406FBD                 retn    0Ch
PS_____:00406FBD sub_406E82      endp

.... then from this subroutine which was called in DialogFunc :

sub_403DEA      proc near
PS_____:00403DEA var_4           = dword ptr -4
PS_____:00403DEA arg_0           = dword ptr  4
PS_____:00403DEA arg_4           = dword ptr  8
PS_____:00403DEA                 mov     ecx, [esp+arg_0]
PS_____:00403DEE                 mov     edx, offset dword_40B160
PS_____:00403DF3                 call    sub_403558
PS_____:00403DF8                 call    sub_403666
PS_____:00403DFD                 push    [esp+arg_4]
PS_____:00403E01                 xor     eax, eax
PS_____:00403E03                 push    eax
PS_____:00403E04                 push    offset sub_403D0F
PS_____:00403E09                 mov     dword_40B154, eax
PS_____:00403E0E                 mov     dword_40B150, eax
PS_____:00403E13                 mov     dword_40A718, eax
PS_____:00403E18                 mov     dword_40A71C, 1
PS_____:00403E22                 call    sub_406E82
PS_____:00403E27                 fld1
PS_____:00403E29                 push    ecx
PS_____:00403E2A                 fstp    [esp+4+var_4]   ; float
PS_____:00403E2D                 call    sub_407147
PS_____:00403E32                 retn    8
PS_____:00403E32 sub_403DEA      endp

and this was the block of codes where the v2m playback was initiated :

PS_____:00401AD4                 call    sub_403DEA
PS_____:00401AD9                 call    sub_403E35
PS_____:00401ADE                 mov     byte_409520, 1

So what i did was patching them with NOP's only so this would skip the whole V2M playback subroutine (yep, this will not play v2m anymore.) :


Final result (for example i chose AutoRun_Pro_6.0.1.40.Keygen.ev1l^4.tPORt ) :


Without patching (and with v2m playback called, and about to play in the keygen) may result in this error (which is manifested from Vista and higher - the keygen will run normally with v2m playback only on Windows XP) ...:


other results :





MetaProducts Flash and Media Capture v1.2.43 SR1 by tPORt








But i know there was a patch solution for it i've found months ago in which can play the v2m's in windows 7 with libv2 1.0 , idk if it really is but if i see it and the patch solution getting to work even on 7 , maybe i'll post the solution.
Anyway,this is how i fixed the releases using IDA only.

Link to comment

As a matter of fact, since i have all their resources, i'm gonna remake some of these templates above, but using MagicH's v2m engine on them for almost-full experience (perhaps i won't include their keygen algos). And i'll be posting them directly in Downloads section.

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...