Jump to content
Tuts 4 You

[crackme] SillyCrackMe


Mouradpr

Recommended Posts

I don't know what i must tell about this stupid challenge, but i love it like my son :D

ok let's see what happen in this simple CrackME..

Request : Serial

Good luck for every one

CrackME.rar

Edited by Mouradpr
Link to comment
Teddy Rogers

The [crackme] tag has been added to your topic title.

Please remember to follow and adhere to the topic title format - thankyou!

[This is an automated reply]

Link to comment

Really nice crack me! thank you Mouradpr...

but my mathematics is weak!

what serial we must enter until ebx = 4D9 in this routine!!?!

@s:

mov al,[esi+4054E3h]

add ebx,eax

dec esi

jnz @s

Best Regards,

VESA

Link to comment

Thats the point...... there is a char limit of 14h chars and 14h * 39h (as input is limited to numbers) < 4D9h.

It would be too easy otherwise ;)

You need to look elsewhere ;)

Edited by Loki
Link to comment
what serial we must enter until ebx = 4D9 in this routine!!?!

this is an old idea... but this isn't the main idea in this CrackME...

Thats the point...... there is a char limit of 14h chars and 14h * 39h (as input is limited to numbers) < 4D9h.

yes :) it isn't a problem ... look up somewhere else :D

Edited by Mouradpr
Link to comment

004010A2 8A86 E3544000 mov al,byte ptr ds:[esi+4054E3]

004010A8 03D8 add ebx,eax

004010AA 4E dec esi

004010AB ^ 75 F5 jnz short CrackME.004010A2

004010AD 81F3 D9040000 xor ebx,4D9

004010B3 74 18 je short CrackME.004010CD

004010B5 6A 30 push 30

004010B7 68 30504000 push CrackME.00405030 ; ASCII "Error"

004010BC 68 28504000 push CrackME.00405028 ; ASCII "Bad Boy"

004010C1 FF75 08 push dword ptr ss:[ebp+8]

004010C4 E8 D9000000 call <jmp.&user32.MessageBoxA>

004010C9 C9 leave

004010CA C2 1000 retn 10

004010CD 6A 30 push 30

004010CF 68 44504000 push CrackME.00405044 ; ASCII "Success"

004010D4 68 38504000 push CrackME.00405038 ; ASCII "Good Job"

004010D9 FF75 08 push dword ptr ss:[ebp+8]

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...