Vulnerabilities

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Tuesday, November 19, 2013

CSCAMP CTF Quals 2013 - Crypto 400 - [Team SegFault]

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We were given two files for the challenge - public key and encrypted message. Reading the public key with openssl we got [ctf@re...
2 comments:

CSCAMP CTF Quals 2013 - Crypto 300 - [Team SegFault]

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We were given about 12 encrypted messages and the challenge description said Many Time Pad and 12th message holds the flag. Below...
Tuesday, October 29, 2013

EMC Defenders League - Round 3 - ElGamal Cryptosystem

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A ruby script was given, looking at the code its easily identified as ElGamal cryptosystem def encrypt(plaintext) begin p,g...

EMC Defenders League - Round 2 - Hill Cipher Known Plain Text Attack

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Couple of cipher text and password for first cipher text was given. Our aim was to decrypt the second message to find the flag fo...
Tuesday, September 24, 2013

CSAW CTF 2013 Quals - Exploitation 200 | 300 | 400 - [Team SegFault]

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Exploitation 200 A Linux ELF 32-bit LSB executable is given without NX. On connecting to the service running on port 31338 [*]...
3 comments:
Tuesday, September 17, 2013

A FFmpeg 0.11.3 Memory Corruption Bug

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I was fuzzing a bit during my free time last month. Mplayer produced an interesting crash due to invalid memory access when tested...
1 comment:
Monday, August 12, 2013

ctf.wargame.vn - Pwn 300

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For pwn300 challenge we were given a 32-bit ELF executable with NX enabled. Analysing the binary we have the following information...
4 comments: