PYC - Self Modifying (Byte)Code

45 Points  0x0

It’s also possible in Python!

Author

Njörd,  

Level  Difficulty

Validations

94 Challengers 1%

Note  Notation

1
2
3
4
5
23 Votes

To reach this part of the site please login

solutions 1 Solution

Display solutions Submit a solution
You should validate this challenge first

Challenge Results Challenge Results

Pseudo Challenge Lang Date
sourcePerrier Cracking  PYC - Self Modifying (Byte)Code fr 30 April 2025 at 23:53
AlphaX Cracking  PYC - Self Modifying (Byte)Code fr 16 April 2025 at 23:47
KangTheConq Cracking  PYC - Self Modifying (Byte)Code en 10 April 2025 at 11:37
glx1036 Cracking  PYC - Self Modifying (Byte)Code fr 29 March 2025 at 20:28
s4tb0y Cracking  PYC - Self Modifying (Byte)Code fr 3 March 2025 at 17:14
sansong Cracking  PYC - Self Modifying (Byte)Code fr 13 February 2025 at 13:53
yag00 Cracking  PYC - Self Modifying (Byte)Code fr 10 February 2025 at 16:22
choch Cracking  PYC - Self Modifying (Byte)Code fr 10 February 2025 at 16:13
boo! Cracking  PYC - Self Modifying (Byte)Code fr 6 February 2025 at 23:18
00BL1X Cracking  PYC - Self Modifying (Byte)Code fr 4 February 2025 at 00:29

challenges 70 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide ELF x86 - 0 protection 14% 48107 5 g0uZ 10 7 October 2006
pas_valide ELF x86 - Basic 11% 38835 5 g0uZ 10 7 October 2006
pas_valide PE x86 - 0 protection 7% 21750 5 alejandr0 7 11 November 2012
pas_valide ELF C++ - 0 protection 4% 11547 10 sourcePerrier 6 13 July 2016
pas_valide Godot - 0 protection 1% 2511 10 Elf 4 10 June 2022
pas_valide PE DotNet - 0 protection 3% 10684 10 Geluchat 6 15 September 2014
pas_valide APK - Introduction 1% 2044 15 Algorab 5 17 October 2022
pas_valide ELF MIPS - Basic Crackme 2% 4508 15 sar 2 9 July 2018
pas_valide ELF x64 - Golang basic 1% 3093 15 jenaye 3 8 November 2018
pas_valide ELF x86 - Fake Instructions 3% 9162 15 kmkz 6 21 February 2010
pas_valide ELF x86 - Ptrace 3% 8050 15 g0uZ 3 27 November 2009
pas_valide Godot - Bytecode 1% 1182 15 Elf 1 10 June 2022
pas_valide WASM - Introduction 1% 1519 15 Cyxo 2 26 March 2021
pas_valide APK - Flutter Debug 1% 649 20 extiop 1 19 June 2022
pas_valide ELF ARM - Basic Crackme 2% 4422 20 0xmitsurugi 7 13 July 2016
pas_valide ELF x64 - Basic KeygenMe 1% 1747 20 fr0g 3 2 September 2020
pas_valide Unity3D Save handling 1% 231 20 Lumy 1 21 July 2023
pas_valide Godot - Mono 1% 763 20 Elf 1 10 June 2022
pas_valide PE DotNet - Basic Anti-Debug 1% 1614 20 nqnt 3 24 March 2021
pas_valide PE DotNet - Basic Crackme 1% 1259 20 nqnt 3 14 April 2021
pas_valide PYC - ByteCode 2% 5370 20 Thanat0s 9 3 July 2013
pas_valide Basic ? crackme 1% 184 25 Dvorhack 0 14 March 2025
pas_valide ELF x86 - No software breakpoints 2% 4065 25 yodzeb 9 2 October 2013
pas_valide Lua - Bytecode 1% 859 25 Bernstein 2 25 March 2021
pas_valide MachO x64 - keygenme or not 1% 1566 25 /bin/ls 2 14 April 2017
pas_valide ELF ARM - crackme 1337 1% 2485 30 2 3 February 2011
pas_valide ELF x86 - CrackPass 2% 5369 30 Tosh 5 3 February 2011
pas_valide ELF x86 - ExploitMe 2% 4539 30 kmkz 5 3 February 2011
pas_valide ELF x86 - Random Crackme 1% 3597 30 kmkz 3 3 February 2011
pas_valide GB - Basic GameBoy crackme 1% 1382 30 jambon69 2 14 September 2018
pas_valide PDF - Javascript 1% 1638 30 koma 1 14 February 2012
pas_valide PE x86 - Xor Madness 1% 905 30 ENOENT 3 17 July 2019
pas_valide Powershell DeObfuscation 1% 572 30 hat.time 2 2 April 2021
pas_valide ELF ARM - Crypted 1% 646 35 koma 2 4 September 2012
pas_valide ELF x64 - Crackme automating 1% 1149 35 0xmitsurugi 7 14 August 2018
pas_valide EVM - Bytecode 1% 8 35 Elf 0 14 March 2025
pas_valide Godot - 3D model 1% 479 35 Elf 1 10 June 2022
pas_valide NRO ARM - Switch homebrew 1% 122 35 Elf 0 21 July 2023
pas_valide PE x86 - SEHVEH 1% 1281 35 Thanat0s 1 4 May 2013
pas_valide APK - Anti-debug 1% 2773 40 cryptax 3 18 December 2012
pas_valide APK - Insomni’Droid 1% 1705 40 cryptax 1 4 March 2012
pas_valide ELF x64 - Rust backdoor 1% 155 40 Elf 0 21 July 2023
pas_valide ELF x64 - Rust Crackme 1% 167 40 extiop 0 17 October 2022
pas_valide PE x64 - UEFI Secure Boot 1% 148 40 Solden 1 10 May 2023
pas_valide APK - Root My Droid 1% 1199 45 koma 1 26 February 2012
pas_valide ELF x64 - Nanomites - Introduction 1% 788 45 Phenol 4 4 March 2018
pas_valide ELF x86 - Anti-debug 1% 1878 45 Tosh 4 3 June 2012
pas_valide PE DotNet - KeygenMe 1% 291 45 nqnt 1 14 April 2021
pas_valide PE x64 - Tables in shambles 1% 95 45 0xTRIKKSS 0 28 December 2023
pas_valide PE x86 - AutoPE 1% 873 45 Gr4ph0s 3 5 August 2011
pas_valide PYC - Self Modifying (Byte)Code 1% 94 45 Njörd 1 28 December 2023
pas_valide PYC - Snakeygen 1% 182 45 erk3 0 17 October 2022
pas_valide ELF x86 - KeygenMe 1% 916 50 int_0x80 5 20 July 2011
pas_valide HackerMan 1% 86 50 LordRoke , Stealer , Sengengie 1 10 May 2023
pas_valide Unity - Mono - Basic Game Hacking 1% 141 50 0x0ff 1 17 October 2022
pas_valide WASM - Find the NPC 1% 262 50 Cyxo 3 26 March 2021
pas_valide PE DotNet - Memory Protect 1% 8 55 Vozec 0 14 March 2025
pas_valide Bash - VM 1% 321 60 govlog 2 25 March 2021
pas_valide ELF x64 - KeyGenMe 1% 171 60 rene-d 1 12 November 2020
pas_valide ELF x64 - Anti-debug and equations 1% 436 65 0xmitsurugi 4 18 July 2016
pas_valide Unity - IL2CPP - Basic Game Hacking 1% 62 65 0x0ff 0 21 July 2023
pas_valide ELF x64 - Nanomites 1% 422 70 Phenol 2 4 March 2018
pas_valide ELF x86 - Packed 1% 442 70 Tosh 3 18 October 2011
pas_valide PE x86 - RunPE 1% 1002 75 Thanat0s 5 16 December 2013
pas_valide PE32+ - KeygenMe 1% 7 85 Redouane 0 14 March 2025
pas_valide ELF x86 - VM 1% 626 90 Thanat0s 7 16 June 2013
pas_valide ELF x64 - Hidden Control Flow 1% 152 100 so3 1 18 November 2020
pas_valide Ringgit 1% 103 110 Cryptanalyse 2 6 October 2019
pas_valide Voracious Nanomites 1% 23 110 Kasen 0 21 July 2023
pas_valide White-Box Cryptography #2 1% 73 130 Cryptanalyse 1 17 July 2019