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- This tutorial will be on Cracking CrackMe's..
-
- The first crackme we will attack is MexElites crackme #1 (Coded by
- nIabI)
- First of all it's unencrypted, so you can find it with w32dasm, but
- i will show you how i did it.
-
- First off all i started it, and entered a crap serial, in my case
- 666, then i swapped in to Softice and sat a BPT on HMEMCPY,
- then i pushed the 'Check it' button and i came into Softice, and i
- pressed F5 once and then F11 to come out of the HMEMCPY call, then
- i worked my way down untill i came to
- :0042D56D 6882D54200 push 0042D582
- and i checked up 0042D582 with 'D 0042D582', and i saw
- [Y] Benadryl
- And i thought that the 'Benadryl' stuff looked suspicious, and i
- tested if that was the valid code, and it was..
-
- This two is so easy =).. it's Lord Caligo's TRY_ME1.COM and TRY_ME2.COM
- , all i did was to look at them with an hex editor, and i saw '123'
- and thought that looked suspicious, and it was the valid code for both
- of them.
-
- The fourth crackme we will attack is MexElites Crackme 4.0 (Coded by
- nIabI)
- first enter a name, i entered 'Klefz TOL' and a junk serial '1122334455'
- and now set an BPT on HMEMCPY with SI, and press the 'Check' button,
- and boom you are in SI and press F5 8 times and F11 the 9:th time and
- go on untill you comes to this adress
- :0042DCB2 A360F74200 mov [0042F760], eax <-- do an ? EAX and you'll see '1122334455'
- :0042DCB7 A158F74200 mov eax, [0042F758] <-- do an ? EAX and you'll see '0653663220' and thats our valid serial =)
- :0042DCBC 3B0560F74200 cmp eax, [0042F760] <-- cmp '1122334455' with '0653663220'
- :0042DCC2 7517 jne 0042DCDB <-- jump to "Bad Name Or Serial Number !!!!!"
- :0042DCC4 6A00 push 00000000
- :0042DCC6 668B0D1CDD4200 mov cx, [0042DD1C]
- :0042DCCD B202 mov dl, 02
- :0042DCCF B8A0DD4200 mov eax, 0042DDA0 <-- put the "Good Serial" dialogue in eax
- :0042DCD4 E867F1FFFF call 0042CE40 <-- print out "Good serial" dialogue
- :0042DCD9 EB15 jmp 0042DCF0 <-- jump to good cracker
- that's all for this crackme.
-
- /Klefz^tOL - tol@thepentagon.com