Sharing writeups of CTF challenges and Machines
Description Can you figure out how this program works to get the flag? Connect to the program with netcat: The program’s source code can be downloaded here. The binary can be downloaded here. Solution We can learn another function of gdb from this challenge. In the question, we are asked to input the address of … Read More “picoCTF – Picker IV write-up” »
Description main calls a function that multiplies eax by a constant. The flag for this challenge is that constant in decimal base. If the constant you find is 0x1000, the flag will be picoCTF{4096}.Debug this. I think this exercies is very useful. I will share 2 solutions of the exercise. Solution 1 We can simply disassemble the function. If we … Read More “picoCTF – GDB baby step4 writeup” »
