This binary asks for a number and a string and outputs it. While playing with value, we notice a negative number for the number will crash the program. $ nc 58.229.122.22 6666 Input Num : 32 Input Msg : TOTO Reply : ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`TOTO $ nc 58.229.122.22 6666 Input Num : […]
This is the next level of Folly, the multi-level challenge from the Ghost in The Shell CTF. Note: I couldn’t complete this level during the CTF because of issues in getting my Debian Lenny and Squeeze qemu-system-arm images working with the Folly binary. I ended up blind coding the ARM […]
folly-b2632babf6ce9c2378630e364150ee2c84f47b73: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.26, stripped Folly was a multi-level challenge from the Ghost In The Shell Code CTF. This Write-up is for Level 2 based on the X86 architecture. It’s a sample text-game like this: $ […]
Exploit 500 is the final exploitation challenge for CSAW CTF. It looks like a game asking questions. You get 2 tries per question. .text:08048CF7 buffer1 = byte ptr -4B4h .text:08048CF7 buffer2 = byte ptr -438h .text:08048CF7 answer = […]