Challenge of Reverse Engineering

diablo2oo2's Crackme #09 ------------------------ name: d2k2.crkme.09.exe size: 6 kb code: masm32 date: 02.12.2008 About: After long time i decided to make a new keygenme... Rules: 1) No patching 2) Find serial for your name 3) Make a Keygen =) _d2k2_crkme09.zip

Xiaojiam's keygenme #02 ! name: Xiaojiam's Keygen.zip size: 562 kb code: yiyuyan date: 12.12.2008 About: A so easy Keygen ..... Rules: 1) No patching ; 2) Find serial for your name ; 3) Make a Keygen ; Xiaojiam__s_Keygen.zip

一、取掉NAG窗口 BP MessageBoxA 00445077 . 8945 FC MOV DWORD PTR [EBP-4], EAX 0044507A . 8B45 FC MOV EAX, DWORD PTR [EBP-4] 0044507D . 66:83B8 D2020>CMP WORD PTR [EAX+2D2], 0 00445085 74 49 JE SHORT 004450D0 ; 此处改为JMP 00445087 . 33C0 XOR EAX, EAX 00445089 . 55 PUSH EBP 0044508A . 68 B1504400 PUSH 004450B1 0044508F . 64:FF30 PUSH DWORD PTR FS:[EAX] 00445092 . 64:8920 MOV DWORD PTR FS:[EAX], ESP 00445095 . 8B5D FC MOV EBX, DWORD PTR [EBP-4] 00445098 . 8B55 FC MOV EDX, DWORD PTR [EBP-4] 0044509B . 8B83 D4020000 MOV …

Here is a challenge for all. Some time ago, I coded an (freeware for medical purposes) application which was never cracked. Too stupid, not worth bothering or too difficult ?!? Dunno ... but I hope you'll tell me. BTW, a registration scheme was only implemented to keep track of people's use (free registration). To comply with forum rules, I have grabbed the registration scheme and made a ReverseMe from it. Everything is allowed : serialfishing, patching, brute forcing ... the ultimate goal is a keygen. The only nag in the real stuff is when clicking the "Register" button. This reverseMe has more to make it easier. Each time an action is required, the registration sc…

004856C6 |. 84C0 test al,al 004856C8 0F84 EA000000 je CrackMe2.004857B8 004856CE |. 8D4D F4 lea ecx,[local.3] 004856D1 |. 8B15 088D4800 mov edx,dword ptr ds:[488D08] 004856D7 |. 8B83 18030000 mov eax,dword ptr ds:[ebx+318] 004856DD |. E8 D2FCFFFF call CrackMe2.004853B4 004856E2 |. 8B45 F4 mov eax,[local.3] 004856E5 |. 8D55 F8 lea edx,[local.2] 004856E8 |. E8 132CF8FF call CrackMe2.00408300 004856ED |. 8B45 F8 mov eax,[local.2] 004856F0 |. 50 push eax 004856F1 |. 8D55 F0 lea edx,[local.4] 004856F4 |. 8B83 04030000 mov eax,dword ptr ds:[ebx+304] 004856FA |. E8 0D3DFBFF call CrackMe2.00439…

by:70 crackme CRACKME1.rar

看看谁可以破解(Who can look at the break) crackme.rar

So Easy CRACKME! MY NEW Work! CrackMe.rar

My own packer... It's so easy... So, it's only a game... to relax yourself There're some anti-debugger in it .... I believe you can unpack it ... 001.rar

VB+ASPACK+mbox2w unpakme.rar

Your Mission if you choose Unpack this file and tell me the original OEP and original File Size. some things to consider: anti olly if you can bypass this please tell me how;) , anti dumping and a few other things let me know! PS. most of the file size is the chiptune converted to c++ table array (adds to the encryption bigger the file = more encryption ps: attach to process example Sorry a little drunk right now maybe this is simple for you to bypass but let me know PS. I am Nefarious PS. The File size is higher now then it is Uncryptedme NefariousUnCryptMe.zip

I hope you can keygen it XUECRACK.rar

Hello every body. I have a New Example of Hardlevel Unpack/Crack me. Please Help me for unpacking and Cracking this file. I think it's Really Hard for Unpacking. if you Unpack this file please Say The Level of Difficulty. 0-3 = EASY 4-6 = MEDIUM 7-10 = HARD Special Thanks to all members that will download this file and work for unpacking and cracking. Please Excuse Me for My Bad English. Crackme.rar

Hi To All new keygen me for testing you Coded iN Borland Delphi 7 Protection : MD5 , Base64 , RSA Note : Just Write A KeyGen Link http://underseh.parsaspace.com/November/KeYGeN%20mE%207_Under%20SEH%20Team.rarBye

V.EASY? CrackME #2 BUT HARD Protected with nBinder v5.5 Protection: Find Correct Serial Compression: MAX Cryptography: Enabled NoTe: If Any First Person DiD iT? *MAKE TUT* I will give U Mod Rank on my SITE. SO? Be Hurry! eNjOy! CrackME__2.rar

Algorithm:(算法) Chinese code 声明变量:(A number of variables) 文本型(01):变量1 变量2 变量3 变量4 变量5 变量6 变量7 变量8 变量9 变量10 变量11 变量12 文本型(02):A B C D E F G H I J K L M N O P 文本型(03):注册码 用户名 常量(常量): 常量1= 4 常量2= H 常量3= S 常量4= Q7 常量5= 2 常量6= 6 常量7= 84 常量8= G 常量9= RR 常量10=D 常量11=B 常量12=KB 常量13=T1 // 常量14=1 常量15=2 常量16=3 常量17=Q7 常量18=4 常量19=5 常量20=67 常量21=8 常量22=RR 常量23=0 //零 常量24=T 常量25=BK 常量26=1T // 常量27=314 常量28=515 常量29=T3R 常量30=QR 常量31=7B 常量32=52 常量33=69T 常量34=890 常量35=RN1 常量36=9 常量37=22B 常量38=T2C 常量39=B134K 常量40=1231T // 常量41=414 常量42=525 常量43=R3R 常量44=Q7 常量45=74 常量46=58 常量47=697 常量48=898 常量49=RR1 常量50=9 常量51=B 常量52=TC 常量53=B1k…

not so much for protecting, I made it just to prove the point that protection can be done in many different ways :/ the goal is to make a script Detemida_np.rar

China crackme.rar

Ok, I've improved it a bit.. and added some cool things I hope this time could take more than just 1 min to unpack it unpackme.rar

Hi , This KeyGenMe coded with using ElGamal algorithm [ Discrete Logarithm ] and Digital Signature Scheme method KeyGenMe Coded with Small key Size For understanding [ Signature Scheme ] method Prog.Languge : Delphi 7 ------- Download Link ----------------------------------- http://www.zshare.net/download/20427257a6e16a7e/ --------------------------------------------------------------- Try To Write KeyGen or Find Serial For Your Name ,,, If you write keygen , please write Short tutorial ,,, Good Luck ... !! RobenX

An improved version of ModdedFog protector Do as usual Download:

This is the most sophisticated CrackME I ever wrote .... I hope everyone tries with it, You must write a keygen and a tutor. Good Luck http://rapidshare.com/files/157996927/Released.rar.html

A new challenge This time just require some minutes to reverse it I want to see a keygen for this baby Note: 1 name have many serials! As always, no patching.. no bruteforcing.. Enjoy! simpkgm.rar

Here we go, friends of .NET & other sh!t ! :biggrin: This was a fast one today evening, but I'm sure it's not easy to solve. It's clean and small, but might turn out as a hard nut :dry: Level : Bitch Good luck ! CrackMe.zip PS: Yes, it IS keygenable.. but just bring me that goodboy and u're actually done.

Good Luck WinLicense_UnPack_Me_.rar