Teknikclel69's silly

Author:
Teknikclel69

Language:
Assembler

Upload:
2024-01-23 15:50

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Platform:
Unix/linux etc.

Difficulty:
1.5

Quality:
4.8

Arch:
x86

Downloads:
21

Size:
8.71 KB

Writeups:
3

Comments:
5

Description

second day of using assembly. i made it silly cause i felt like it

Comments (5)
Writeups (3)

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bitemiraatif on 2024-02-07 06:30: im a newbie and cracked it, but i have two questions? if int 0x80 is executed at that time eax is 3 how is it taking input from me if system call code is 3 and Q2 is when did we load "chinese baguette" in the first place?

cnathansmith on 2024-02-08 05:51: syscall 3 in x86 on Linux is sys_read. Take a look at the register arguments here: https://faculty.nps.edu/cseagle/assembly/sys_call.html "chinese baguette\n" is just hardcoded into the data section and labeled 'lmao': 0804A018 lmao db 'chinese baguette',0Ah,0 The input is read into 'string', then this is compared to 'lmao' byte-by-byte: .text:0804901B lea esi, string .text:08049021 lea edi, lmao ; "chinese baguette\n" .text:08049027 mov ecx, 11h .text:0804902C repe cmpsb .text:0804902E jnz short error

pico on 2024-02-11 17:36: [Click to reveal]

AfkMaster on 2024-02-11 19:40: nice!

stewa2m3 on 2024-04-01 23:15: I was thrown off originally by the "chinese baguette". Found in through the strings command. Was able to use gdb to breakpoint at trole() and just print the string from memory.

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Solution by cnathansmith on 2024-01-24 21:58:
Straightforward solution using a disassembler

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Solution by neon on 2024-01-26 00:02:
Solution to silly by Teknikclel69.

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Solution by k3rneL on 2024-09-18 22:04:
Simple solution using objdump

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Teknikclel69's silly