voidsecurity

This is a code which I wrote sometime back to demonstrate the padding oracle in POODLE vulnerability. Full details of the issue is...

This post is about exploiting a minimal binary without SigReturn Oriented Programming (SROP). Below is demo code, thanks to my frie...

Played ECTF with some of friends in Team BADSECTOR. Exploit 400 was a Linux 64-bit ELF protected with NX, partial RELRO and canary...

For this challenge we got a Linux 64-bit ELF executable [C++ code]. ASLR was enabled in the remote machine and NX disabled in exec...

We got a statically linked linux 32-bit ELF with NX and stack canary. It had 2 vulnerabilities - format string and buffer overflo...

We were given a gzip compressed file which had the rot13 encoded python source for the challenge. The source had python bytecode wh...

This is not a full solution to the challenge. The challenge was to write a code that could be executed as C, Python 2, Python 3, R...

Challenge binary is an 32-bit ELF, with ASLR and NX enabled. The buffer overflow is straight forward and happens in read() call, th...

This is a vulnerability that I found along with my friend Dhanesh while fuzzing iOS Safari in iPad Mini. The POC could trigger a U...

A 32-bit ELF was given for this challenge. The binary is simple which reads name and age. [root@renorobert Pwnium]# ./pwn200 Name...

We were given a 64-bit stripped ELF for this challenge. We need to generate a valid password for this executable. [root@renorobe...

This one again is 32 bit ELF protected with NX and Canary. The binary implements some operations as below: Welcome to Shitsco Int...

The 32-bit ELF allocates heap using sbrk() and then calls mprotect() to make is executable. One object of size 260 bytes can be ov...

Vuln 200 is a 32 bit ELF protected with NX and ASLR enabled and no RELRO. This is what it looked like: [ctf@renorobert ructf]$ n...

Description: You need to open door no 5 in a secret facility. We have been trying to brute-force the door without success. One o...

We were given a 32 bit ELF running on Ubuntu 13.10 x86 system with NX, Stack Canary and ASLR enabled. The vulnerability is in the ...

The binary starts with mmap() syscall to allocate a memory of 0x7530 bytes. .text:00000000004000E0 exit: ...