Na-edozi ọrụ ahụ na pwnable.kr 25 - otp. Oke nha faịlụ Linux

N'isiokwu a, anyị ga-edozi ọrụ 25th site na saịtị ahụ enwere ike.kr.

Ozi nhaziKarịsịa maka ndị chọrọ ịmụta ihe ọhụrụ ma zụlite na mpaghara ọ bụla nke ozi na nchekwa kọmputa, m ga-ede ma kwuo banyere ụdị ndị a:

• PWN;
• cryptography (Crypto);
• teknụzụ netwọkụ (Network);
• ntụgharị (Reverse Engineering);
• steganography (Stegano);
• ịchọ na nrigbu nke adịghị ike WEB.

Na mgbakwunye na nke a, m ga-ekekọrịta ahụmịhe m na kọmpụta forensics, malware na firmware analysis, ọgụ na netwọk ikuku na netwọk mpaghara, na-eduzi pentest na ide ihe.

Iji nyere gị aka ị nweta akụkọ ọhụrụ, ngwanrọ na ozi ndị ọzọ, emepụtara m Telegram ọwa и otu iji kparịta okwu ọ bụla na mpaghara IIKB. Nakwa arịrịọ nkeonwe gị, ajụjụ, ntụnye na ndụmọdụ gị Aga m ele anya wee zaghachi onye ọ bụla..

Enyere ozi niile maka ebumnuche nkuzi naanị. Onye dere akwụkwọ a anaghị ewere ọrụ ọ bụla maka mmebi ọ bụla kpatara onye ọ bụla n'ihi iji ihe ọmụma na ụzọ enwetara n'ihi ịmụ akwụkwọ a.

Na-edozi ọrụ otp

Ka anyị gaa n'ihu na ngalaba nke abụọ. M ga-ekwu ozugbo na ọ dị mgbagwoju anya karịa nke mbụ, ma oge a ha anaghị enye koodu isi mmalite nke mmemme ahụ. Echefula maka mkparịta ụka ebe a (https://t.me/RalfHackerPublicChat) na ebe a (https://t.me/RalfHackerChannel). Ka anyị malite.

Pịa akara ngosi nke nwere mbinye aka otp. Enyere anyị adreesị na ọdụ ụgbọ mmiri iji jikọọ.

Anyị jikọọ na-ele anya gburugburu ihe nkesa.

Ọkọlọtọ nke anyị enweghị ike ịgụ, mmemme na koodu isi mmalite ya. Ka anyị leba anya na isi mmalite.

Ka anyị dozie ya. Usoro ihe omume na-ewe a paswọọdụ dị ka arụmụka.

Na-esote, a na-echekwa bytes 16 random na mgbanwe otp.

A na-emepụta faịlụ nwere aha random na folda tmp (nke mbụ 8 bytes bụ otp) na-edere ya 8 bytes (nke abụọ bytes 8 bụ otp).

Maka ihe ụfọdụ, a na-agụ uru nke faịlụ emepụtara ma jiri ya tụnyere paswọọdụ abanyela.

Nke a bụ ebe adịghị ike na-abata. Ọ na-agụnye ichekwa nọmba emepụtara n'otu oge na faịlụ. Anyị nwere ike belata nha faịlụ, dịka ọmụmaatụ, na 0, mgbe ahụ mgbe ị na-ede ma na-agụ, 0 ga-atụnyere paswọọdụ. Enwere ike ime nke a dị ka nke a.

# ulimit -f 0

Ugbu a, ka anyị na-agba ọsọ mmemme.

Anyị nwetara mperi. Ọ baghị uru, enwere ike ịhazi ya site na iji otu python.

python -c "import os, signal; signal.signal(signal.SIGXFSZ, signal.SIG_IGN); os.system('./otp 0')" 

Anyị na-enweta ọkọlọtọ na ihe dị mfe 100 anyị. Ma anyị na-aga n'ihu: n'isiokwu na-esonụ, anyị ga-emetụ aka na Weebụ. Ị nwere ike isonyere anyị na telegram.

isi: www.habr.com