voidsecurity

Unlike x86, x86_64 ROP payload needs the parameters to function call in registers. __libc_csu_init functions provides a few nice ga...

The given binary is a 32 bit FreeBSD ELF executable, statically linked. Setting up a FreeBSD 9.1 VM, I started analysing the bina...

We were given a 32 bit Linux ELF executable with NX enabled. The executable is very much similar to pwn100. As pwn100, we can over...

We were given a 32-bit Linux ELF executable, with NX disabled. Analysing the binary, we can see the following information [*] Th...

We were given two files for this challenge - python script used to generate RSA keypair and authorized_keys. Authorized_keys is t...

We have a 32 bit ELF executable, with RWX permission in stack and 0x08049000-0x0804a000 memory. 61 bytes of user input is taken us...

This again is a challenge we set for InCTF Quals. The idea was inspired by the service Maya written for previous edition of InCTF....