how to crack md5(md5(pwd)+string) hashes?

[perlish]

hi,the hash was created using md5(md5(pwd)+string),how can I use plus to crack it ?

thank you !

[atom]

This depends on string length. If salt length < 30, use 2611. if its 30 use 2711. Otherwise its not supported.

[perlish]

(06-28-2012 09:57 AM)atom Wrote:  This depends on string length. If salt length < 30, use 2611. if its 30 use 2711. Otherwise its not supported.

md5(md5(pwd+string)) means md5(md5(pwd.salt)) ?

it seems 2611 and 2711 did not work,double md5 seems ok but can not crack.

./oclHashcat-plus64.bin -m 2600 ./hash ./dic
oclHashcat-plus v0.08 by atom starting...

Hashes: 1
Unique digests: 1
Bitmaps: 8 bits, 256 entries, 0x000000ff mask, 1024 bytes
Rules: 1
GPU-Loops: 64
GPU-Accel: 40
Password lengths range: 1 - 15
Platform: AMD compatible platform found

Scanned dictionary ./dic: 24 bytes, 2 words, 2 keyspace, starting attack...


Status.......: Exhausted
Input.Mode...: File (./dic)
Hash.Target..:
Hash.Type....: Double MD5
Time.Running.: 1 sec
Time.Left....: 0 secs
Time.Util....: 1000.6ms/0.0ms Real/CPU, 0.0% idle
Speed........: 2 c/s Real, 0 c/s GPU
Recovered....: 0/1 Digests, 0/1 Salts
Progress.....: 2/2 (100.00%)
Rejected.....: 0/2 (0.00%)
HW.Monitor.#1: 0% GPU, 35c Temp
HW.Monitor.#2: 0% GPU, 34c Temp
HW.Monitor.#3: 0% GPU, 31c Temp

Started: Thu Jun 28 06:36:09 2012
Stopped: Thu Jun 28 06:36:10 2012
./oclHashcat-plus64.bin -m 2611 ./hash ./dic
WARNING: Hashfile './hash' in line 1 : Line-length exception
ERROR: No hashes loaded

./oclHashcat-plus64.bin -m 2711 ./hash ./dic
WARNING: Hashfile './hash' in line 1 : Line-length exception
ERROR: No hashes loaded

[undeath]

md5(md5(pwd)+string) != md5(md5(pwd+string))

also you did not specify that "string" in your hash file (aka salt).

[perlish]

(06-28-2012 02:11 PM)undeath Wrote:  md5(md5(pwd)+string) != md5(md5(pwd+string))

also you did not specify that "string" in your hash file (aka salt).

clear,thank you !