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visits member for 1 year, 10 months
seen Apr 13 at 4:42

Sep
11
comment Encryption and compression of Data
That looks like a question from the coursera cryptography course's exams.
Aug
21
awarded  Constituent
Aug
21
awarded  Caucus
Aug
21
comment Are there any tools that focus on shellcode analysis?
@Polynomial you can disassemble raw blobs using objdump: objdump -mi386 -D -b binary shellcode.bin
Aug
18
answered How to make / dump contents of memory for forensics analysis?
Aug
2
answered Isn't microtime() or mt_rand() sufficient for password reset?
Jul
31
comment Computer decryption algorithms and knowing the solution
On block ciphers you can check the padding of the last block.
Jul
23
awarded  Commentator
Jul
23
comment Find changes and modifications made to system by application or virus,
You could try a malware sandbox like cuckoo.
Jul
20
answered How wep wireless security works?
Jul
13
awarded  Enthusiast
Jul
11
comment SQL injection explanation
Sorry I was replying to @jcubic, there's nothing wrong with your answer.
Jul
11
comment SQL injection explanation
@jcubic, yes mysql can interpret hex literals as strings see Hexadecimal Literals
Jul
11
comment SQL injection explanation
That's not correct. You can put whatever you want in an union when testing the number of columns, as long as it isn't filtered.
Jul
11
answered SQL injection explanation
Jul
10
comment Storing password hashes without a correlation to the user account
Not to mention all the additional inconveniences, like making your backups grow several GB. Also an attacker could grab the admin salt and insert a new hash in the table. It'd be a completely stealthy backdoor.
Jul
7
awarded  Critic
Jul
6
comment Shellcode for higher file privileges
Is the stack executable? Have you confirmed the shellcode gets executed (use gdb)?
Jul
6
comment Knowing Hash Algorithm from Hashed String
I don't think so. DES has a 64 bit block size and 56 bit key size. If it were encrypted with DES, it should have a size multiple of 64 bit.
Jul
6
awarded  Analytical