Ukuxazulula umsebenzi nge-pwnable.kr 25 - otp. Umkhawulo kasayizi wefayela le-Linux

Kulesi sihloko sizoxazulula umsebenzi wama-25 kusuka kusayithi pwnable.kr.

ulwazi lwenhlanganoIkakhulukazi kulabo abafuna ukufunda okuthile okusha futhi bathuthuke kunoma iyiphi indawo yolwazi nokuphepha kwamakhompiyutha, ngizobhala futhi ngikhulume ngezigaba ezilandelayo:

• I-PWN;
• i-cryptography (Crypto);
• ubuchwepheshe benethiwekhi (Inethiwekhi);
• reverse (Reverse Engineering);
• i-steganography (i-Stegano);
• ukusesha nokuxhashazwa kobungozi be-WEB.

Ngaphezu kwalokhu, ngizokwabelana ngolwazi lwami ku-forensics yekhompyutha, ukuhlaziya uhlelo olungayilungele ikhompuyutha kanye nokuhlaziywa kwe-firmware, ukuhlaselwa kwamanethiwekhi angenawaya namanethiwekhi endawo, ukwenza ama-pentest kanye nokuxhaphaza ngokubhala.

Ukuze ukwazi ukuthola mayelana nezihloko ezintsha, isofthiwe nolunye ulwazi, ngidale isiteshi kuTelegram и iqembu ukuxoxa nganoma yiziphi izinkinga endaweni ye-IIKB. Futhi izicelo zakho siqu, imibuzo, iziphakamiso kanye nezincomo Ngizobheka bese ngiphendula wonke umuntu..

Lonke ulwazi luhlinzekelwe ngezinjongo zemfundo kuphela. Umbhali walo mbhalo akathwesi icala nganoma yimuphi umonakalo odalwe kunoma ubani ngenxa yokusebenzisa ulwazi nezindlela ezitholwe ngenxa yokutadisha lo mbhalo.

Ukuxazulula umsebenzi we-otp

Asiqhubeke nesigaba sesibili. Ngizosho ngokushesha ukuthi kuyinkimbinkimbi kuneyokuqala, kodwa kulokhu abahlinzeki ngekhodi yomthombo yohlelo. Ungakhohlwa ngengxoxo lapha (https://t.me/RalfHackerPublicChat) futhi lapha (https://t.me/RalfHackerChannel). Ake siqale.

Chofoza isithonjana nge-opp yesiginesha. Sinikezwa ikheli kanye nembobo esingaxhuma kukho.

Sixhuma futhi sibheke iseva.

Ifulegi esingakwazi ukulifunda, uhlelo kanye nekhodi yalo yomthombo. Ake sibheke umthombo.

Asiyilungise. Uhlelo luthatha iphasiwedi njengengxabano.

Okulandelayo, amabhayithi angu-16 angahleliwe agcinwa kokuguquguqukayo kwe-otp.

Ifayela elinegama elingahleliwe lakhiwa kufolda ye-tmp (amabhayithi okuqala angu-8 ayi-otp) futhi amabhayithi angu-8 angahleliwe abhalwa kulo (amabhayithi angu-8 esibili yi-otp).

Ngesizathu esithile, inani lefayela elidaliwe liyafundwa futhi liqhathaniswa nephasiwedi efakiwe.

Yilapho ubungozi bungena khona. Iqukethe ukulondoloza okuphakathi inombolo ekhiqiziwe efayelini. Singakhawulela usayizi wefayela, isibonelo, ku-0, bese kuthi lapho ubhala nokufunda, u-0 uqhathaniswe nephasiwedi. Lokhu kungenziwa kanje.

# ulimit -f 0

Manje ake siqalise uhlelo.

Sithola iphutha. Akunandaba, ingacutshungulwa kusetshenziswa i-python efanayo.

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

Sithola ifulegi kanye namaphoyinti ethu angu-100 alula. Futhi siyaqhubeka: esihlokweni esilandelayo sizothinta iWebhu. Ungasijoyina ku yocingo.

Source: www.habr.com