Ho rarolla mosebetsi ka pwnable.kr 25 - otp. Litekanyetso tsa boholo ba faele ea Linux

Sehloohong sena re tla rarolla mosebetsi oa 25 ho tloha sebakeng sa marang-rang pwnable.kr.

litaba tsa mokhatloHaholo-holo ho ba batlang ho ithuta ntho e ncha le ho ntshetsa pele sebakeng leha e le sefe sa tlhahisoleseding le ts'ireletso ea k'homphieutha, ke tla ngola le ho bua ka lihlopha tse latelang:

• PWN;
• cryptography (Crypto);
• mahlale a marang-rang (Network);
• reverse (Reverse Engineering);
• steganography (Stegano);
• ho batla le ho sebelisa hampe likotsi tsa WEB.

Ntle le moo, ke tla arolelana le boiphihlelo ba ka ho tsa forensics ea khomphutha, tlhahlobo ea malware le firmware, litlhaselo tsa marang-rang a se nang mohala le marang-rang a sebaka sa lehae, ts'ebetso ea pentesting le ho ngola.

E le hore u ka tseba ka lingoliloeng tse ncha, software le lintlha tse ling, ke li entse Lenaneo la thelekramo и sehlopha ho buisana ka litaba life kapa life sebakeng sa IIKB. Hape le likopo tsa hau, lipotso, litlhahiso le likhothaletso Ke tla sheba 'me ke arabe batho bohle..

Lintlha tsohle li fanoe molemong oa thuto feela. Mongoli oa tokomane ena ha a nke boikarabelo ba tšenyo leha e le efe e bakiloeng ho mang kapa mang ka lebaka la ho sebelisa tsebo le mekhoa e fumanoeng ka lebaka la ho ithuta tokomane ena.

Ho rarolla mosebetsi oa otp

Re tsoela pele ka karolo ea bobeli. Ke tla re hang-hang hore ho thata ho feta ea pele, empa lekhetlong lena ha ba fane ka khoutu ea mohloli oa lenaneo. Se ke oa lebala puisano mona (https://t.me/RalfHackerPublicChat) le mona (https://t.me/RalfHackerChannel). Ha re qaleng.

Tobetsa aekhoneng e nang le otp ea ho saena. Re fuoa aterese le boema-kepe ho hokela ho tsona.

Re hokahanya le ho sheba ho pota-pota ka har'a seva.

Folakha eo re ke keng ra e bala ke lenaneo le khoutu ea eona ea mohloli. A re boneng mohloli.

Ha re e thonakang. Lenaneo le nka phasewete e le khang.

Ho feta moo, li-byte tse 16 tse sa reroang li bolokiloe mofuteng oa otp.

Faele e nang le lebitso le sa reroang e entsoe foldareng ea tmp (li-byte tsa pele tse 8 ke otp) 'me li-byte tse 8 li ngotsoe ho eona (li-byte tse 8 tsa bobeli li otp).

Ka lebaka le itseng, boleng ba faele e entsoeng bo baloa le ho bapisoa le password e kentsoeng.

Ho na le ts'oaetso mona. E na le poloko ea mahareng ea nomoro e hlahisitsoeng faeleng. Re ka fokotsa boholo ba faele, mohlala, ho 0, ebe ha u ngola le ho bala, 0 e tla bapisoa le password. U ka e etsa tjena.

# ulimit -f 0

Joale ha re tsamaiseng lenaneo.

Re fumana phoso. Ha ho na taba, e ka sebetsoa ho sebelisoa python e tšoanang.

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

Re fumana folakha le lintlha tsa rona tse bonolo tsa 100. 'Me re tsoela pele: sehloohong se latelang re tla ama Websaete. U ka ikopanya le rona ho thelekramo.

Source: www.habr.com