Warmup Warmup : Welcome to securinets CTF In this task we are dealing with very simple function main: undefined8 main(void) { int64_t iVar1; undefined8 uVar2; uint32_t var_8h; undefined8 var_4h; write(1, 0x988, 0x1a); read(0, 0x201080, 0x31); iVar1 = strlen(0x201080); *(undefined *)(iVar1 + 0x20107f) = 0; var_8h = 0; strcpy(rsi, 0x201080); uVar2 = strlen(0x201080); memfrob(0x201080, uVar2); var_4h._0_4_ = 0; while ((int32_t)var_4h < 0x14) { var_8h = var_8h + (int32_t)(char)(*(uint8_t *)((int64_t)(int32_t)var_4h + 0x201020) ^ *(uint8_t *)((int64_t)(int32_t)var_4h + 0x201080)); var_4h....

[re] Snake (10) Description Short info about task: Name: Snake Difficulty: easy Score: 10 Flag should be in the format: HTB{username:password} Overview We have got the python script that is waiting for some username and password: $ python snake.py ___________.__ _________ __ \__ ___/| |__ ____ / _____/ ____ _____ | | __ ____ | | | | \_/ __ \ \_____ \ / \__ \ | |/ // __ \ | | | Y \ ___/ / \ | \/ __ \| <\ ___/ |____| |___| /\___ > /_______ /___| (____ /__|_ \___ > \/ \/ \/ \/ \/ \/ \/ The Snake Created by 3XPL017 Your number is 809 Authentication required Enter your username QWE Wrong username try harder Let’s look into code to get more info about how to get username and password....

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Prerequisities Make sure that you have dumped binary from memory (optionally) Fix PE headers if necessary Unmap With PE bear Open PE-bear > Sections > Section Headers Make sure that VA and VS matches RA and RS, so: RA[i] = VA[i] RS[i] = RA[i+1] - RA[i] RS.reloc = 0 VS[i] = RS[i] If you see some red blocks it means that PE is probably misalligned, check: Fix misalligned sections Fix misalligned sections Open binary in hex editor Go to the 1st section (on example above to 0x1000) Section should start in this place, nulls should be before....