Author:
VladMetz

Language:
C/C++

Upload:
6:35 PM 01/29/2022

Download

Platform
Windows

Difficulty:
3.5

Quality:
4.0

Arch:
x86

Description

The task is to find out the flag at which the message that you are a professional appears :D The main conditions do not change the program, good luck

• Comments
• Solutions

ayyMike on 12:12 AM 02/01/2022: The logic of the program seems to be as follows - esi = 2 * input[7] + input[0] * input[1] * (input[2] - input[2] * input[0] * input[6] * input[5] * input[4] * input[3] * input[9] * input[8] * input[8]); unsigned int calculated_value = esi / input[11] / input[12] / input[13] * input[2] * input[0] * input[1] calculated_value -= 148000000 if calculated_value = 1000000 fail() With this in mind, providing a specific set of characters will result in a calculated value

ayyMike on 12:13 AM 02/01/2022: under 1000000. Password I used: jXqmXyYrgJRVqs

VladMetz on 10:26 AM 02/01/2022: ayyMike,Yes, you're good.

Slava on 3:40 AM 02/05/2022: it boils down to if ( (unsigned int)(calc_value2 - 0x8D24D00) = 0xF4240 ) result_flag = "Invalid flag!"; I see that the calculation itself was already mentioned above.. a few more keys: ZXINzDNniEkOvS CevXPjscYmPOSh CevXPjscYmPOSh SePSvWbGRPoQpQ twciiDbxPPyvtW

Shert on 1:39 PM 02/28/2022: Оставил исходники кей-гена в решении, примите! Спасибо Your key = gfjoZW[HbCZitO Your key = _JwxfzKtwOFFuh Your key = nSDgDaSUuUxPOQ Your key = UPGqUTl\p_Xa\i Your key = tkRGmsFElhAJHO Your key = ckqWWxOXh\LBSu Your key = cfmtfvIZVLyIiF Your key = CO]U[mMFQsT^tZ Your key = MMDZOXDHHzSld^ Your key = ^s\eDuE[DgZLyj Your key = ixOw[oLHotarzo Your key = miqKhZgu\aAwsf Your key = PCFGWOKazZwXjq Your key = xsMegfnBeeDYaf Your key = rMrcgMClCvvcMT Your key = LSwXaXduUJbbWm Your key = aZApcdWvPgmuXf Your key = hcyYfqjcdJAFys Your key = Op`cMUSfgeAsua Your key = kSHcWnUy_mLppO

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