stackpointer7's agent

Author:
stackpointer7

Language:
C/C++

Upload:
2025-06-07 02:07

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Platform:
Unix/linux etc.

Difficulty:
2.4

Quality:
4.4

Arch:
x86-64

Downloads:
71

Size:
16.20 KB

Writeups:
3

Comments:
5

Description

this is a binary that combines binary exploitation and RE... good luck mr 1337 :) DESCRIPTION BELOW: Welcome, Agent 1337. The notorious group 0xL0CCEDC0DE has stolen 1337 billion dollars, and your mission is to break into their internal systems and recover the funds.

Comments (5)
Writeups (3)

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rook on 2025-06-26 05:53: you can just bruteforce 2 charcters until it form a pair of encrypted bytes

xHector on 2025-07-31 09:05: it was great! I couldn't solve the last stage but it is okay :D

cheongmyeong on 2025-08-01 14:48: im not able to get past stage0. heres what i tried: 0 root(access denied so it destroys the allocated memory) 1 root(entered root as password because malloc allocates memory on the same space which was assigned to the username case, so the username pointer still points to the same memory) 1 IAMROOT1337(to allocate new memory for the actual password) 2 login but i still got a segfault and im not sure why

romance on 2025-09-22 16:10: unreasonable and unexpected segfault upon logging in

LimeTheDerg on 2025-10-08 16:06: This is probably the most fun I've had with a crackme :D It's very challenging tho, I couldn't do stage2 TuT

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Solution by Berardinis on 2025-06-11 07:28:
After analyzing the program in IDA Pro and making several attempts with the correct values, we arrived at the following input: ``` welcome agent 1337, the evil group 0xL0CCEDC0DE has stolen 1337 BILLION dollars, you MUST get it back... for your first take you must hack into the admin account 0: enter username, 1: enter password, 2: login 0 enter ur username: AAAA 0: enter username, 1: enter password, 2: login 2 please try again as an admin! 0: enter username, 1: enter password, 2: login 1 enter ur password: root 0: enter username, 1: enter password, 2: login 1 enter ur password: IAMROOT1337 0: enter username, 1: enter password, 2: login 2 stage 1/2 of logging in done... stage 2/2 of logging in done... good job agent 1337! you must now use ur secret device to change the code to unlock the door! the current code is ABCD and you must change it! %.4919d%8$n .... YOU MADE IT agent 1337 you now have to get the money and escape wait is someone here? so mr 1337... you made it into our building... you want this money so bad right?? ok than, say my name and ill give it to you! what is my name?: stackpointer you did it... fine i guess you can have the money back AGENT 1337 YOU DID IT! ``` To determine the flag in the final stage, a Python script was written. Flag: `stackpointer`

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Solution by georgepaphitis on 2025-08-29 16:23:

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Solution by temurin on 2025-10-05 16:27:

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crackmes.one

crackmes.one

stackpointer7's agent_1337