Author:
bl4ack

Language:
C/C++

Upload:
1:56 AM 12/17/2021

Platform
Windows

Difficulty:
3.0

Quality:
3.5

Arch:
x86-64

Description

Hi there, the rules is on crackme. is not difficult bypass the anti-debugger but find the key, you'll have to use your neurons...

• Comments
• Solutions

mucomplex on 5:54 PM 01/09/2022: Password input is bugged. It is not replace inside memory

mstik13 on 8:05 AM 05/19/2022: NiceOne!, that was fun!

db123 on 7:37 AM 06/22/2022: char v15m[16] = { 0x4E, 0, 0x69, 0, 0x63, 0 , 0x65, 0, 0x4F, 0, 0x6E, 0, 0x65, 0, 0x21, 0 }; memcpy(&v15, v15m, sizeof(v15)); char v16m[16] = { 0x2D, 0, 0x5F, 0, 0, 0 , 0, 0, 0x80, 0x50, 0x5D, 0x61, 0xF8, 0x7F, 0, 0 }; memcpy(&v16, v16m, sizeof(v16)); memset(&si128, 0, sizeof(si128)); si128.m128i_i8[0] = (uint8)strlen(username); si128.m128i_u8[8] = 0x0F; userpassword[0] = (si128.m128i_i32[0] ^ *(unsigned __int16*)&v15); userpassword[1] = (si128.m128i_i32[0] ^ WORD1(v15)); userpassword[2] = (si128.m128i_i32[0] ^ WORD2(v15)); userpassword[3] = (si128.m128i_i32[0] ^ WORD3(v15)); userpassword[4] = (si128.m128i_i32[0] ^ WORD4(v15)); userpassword[5] = (si128.m128i_i32[0] ^ WORD5(v15)); userpassword[6] = (si128.m128i_i32[0] ^ WORD6(v15)); userpassword[7] = (si128.m128i_i32[0] ^ HIWORD(v15)); userpassword[8] = (si128.m128i_i32[0] ^ v16.m128i_u16[0]); userpassword[9] = (si128.m128i_i32[0] ^ v16.m128i_u16[1]); userpassword[10] = (si128.m128i_i32[0] ^ v16.m128i_u16[2]); userpassword[11] = 0;

You must me logged to submit a solution