I was a speaker at spbctf summer 2021 meetups with brief talk about currently available static methods for analysis executable files that will be helpful in CTF/MA reverse process.

A link to youtube (ru) - Currently unavailable.

The presentation (.pptx).

I reviewed the trends of 2020 and 2021 in the use of PyInstaller in malware. I provided statistics on the versions used, analysis of mechanisms for gaining persistence in the system, data theft, encryption, and communication with C&C. Special attention to obfuscation and how to deal with it.

Recourses from my PHDays 10 speech.

Speech on phdays.com

Record on thestandoff365.com

I was a speaker at spbctf NY 2020 meetups with my research about possibilities of reverse PYC (compiled python) files, paths how to obfuscate it to complicate the work of reverse engineers, hehe. And, finally, how to investigate obfuscated pycs.

A link to youtube (ru).

The presentation (.pptx).

Writeup on APC6969 - 8-bit architecture made by archercreat.

Let’s write our full-pledged architecture implementation :)

Райтап на одну из самых комплексных задач отборочного этапа:

• [1000 pts, reverse] 1_w1sh_1_w1ll_r3v3rs3_y0ur_r3m0t3_4dm1n_t00l

Представляю райтапы на задачи отборочного этапа Dubna CTF 2021, проводимого между НИУ МЭИ и Университетом Дубны.

Список реализованных задач:

• [0 pts, admin] 1_b3l13v3_wh4t_y0u_s41d
• [516 pts, admin] 1_w1sh_1_c0uld_s3cur3_my_l0v3
• [324 pts, forensics] 1_w1sh_t0_b3_gl4d_7o_s33_y0u_w3ll
• [1000 pts, reverse] 1_w1sh_1_w1ll_r3v3rs3_y0ur_r3m0t3_4dm1n_t00l - в отдельном посте
• [744 pts, web] 1_w1sh_t0_b3_g00gl3
• [100 pts, web] 1_w1sh_t0_b3_y0ur_4l1b1
• [100 pts, reverse] 1_w4n7_70_b3_c4lcul473d

The master-level individual competition.

Reverse and traffic analysis: Task 3 and task 5.

Task creators decided to use writeups in this files as the last step of the competition, heh.

New! Доступен разбор на русском! Выкладываю свой доклад финала.

Solution.docx

I’ve written three tasks for my speech on spbctf winter meetup 2020. Here are writeups on them.

Tasks:

• Odna pika
• Dve piki
• Tri piki

You can watch the writeup on YouTube (on russian).

(open the post to view more)

Похоже, в этом году составители тасков решили сильно сжалиться над участниками-магистрами. В прошлом году было в разы сложнее (и одновременно на столько же увлекательней!)

Recourses from my THE STANDOFF 2020 speech.

Link to the presentation

Repository with POCs

Record on thestandoff365.com

The main goal of my research was analysing attack vectors on PyInstaller and check the possibility to inject our payload to each of them.