Cracking Cracking

Reverse binaries and crack executables.

This series of challenges will help you understand the inner workings of compiled languages. Disassemble the binaries provided to solve the crackmes at the assembly level.

Prerequisites:
– Advanced understanding of assembly languages on various architectures (x86, ARM, MIPS ...).
– Understanding of the different executable formats (ELF, PE, etc.).
– Mastery in the use disassemblers and debuggers.

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% 53891 5 g0uZ 10 7 October 2006
pas_valide ELF x86 - Basic 11% 43373 5 g0uZ 10 7 October 2006
pas_valide PE x86 - 0 protection 7% 24811 5 alejandr0 7 11 November 2012
pas_valide ELF C++ - 0 protection 4% 13672 10 sourcePerrier 6 13 July 2016
pas_valide Godot - 0 protection 1% 3954 10 Elf 5 10 June 2022
pas_valide PE DotNet - 0 protection 3% 12061 10 Geluchat 6 15 September 2014
pas_valide APK - Introduction 1% 3122 15 algorab 5 17 October 2022
pas_valide ELF MIPS - Basic Crackme 2% 5492 15 sar 2 9 July 2018
pas_valide ELF x64 - Golang basic 1% 3816 15 jenaye 3 8 November 2018
pas_valide ELF x86 - Fake Instructions 3% 10071 15 kmkz 6 21 February 2010
pas_valide ELF x86 - Ptrace 3% 8925 15 g0uZ 3 27 November 2009
pas_valide Godot - Bytecode 1% 1754 15 Elf 1 10 June 2022
pas_valide WASM - Introduction 1% 2000 15 Cyxo 2 26 March 2021
pas_valide PYC - ByteCode 2% 5854 20 Thanat0s 9 3 July 2013
pas_valide PE DotNet - Basic Crackme 1% 1595 20 nqnt 3 14 April 2021
pas_valide PE DotNet - Basic Anti-Debug 1% 2026 20 nqnt 3 24 March 2021
pas_valide Godot - Mono 1% 1141 20 Elf 1 10 June 2022
pas_valide Unity3D Save handling 1% 471 20 Lumy 2 21 July 2023
pas_valide ELF ARM - Basic Crackme 2% 5173 20 0xmitsurugi 7 13 July 2016
pas_valide APK - Flutter Debug 1% 1022 20 extiop 1 19 June 2022
pas_valide ELF x64 - Basic KeygenMe 1% 2345 20 fr0g 3 2 September 2020
pas_valide Basic ? crackme 1% 767 25 Dvorhack 2 14 March 2025
pas_valide ELF x86 - No software breakpoints 2% 4490 25 yodzeb 9 2 October 2013
pas_valide Lua - Bytecode 1% 1180 25 Bernstein 2 25 March 2021
pas_valide MachO x64 - keygenme or not 1% 1792 25 /bin/ls 2 14 April 2017
pas_valide PDF - Javascript 1% 1834 30 koma 1 14 February 2012
pas_valide Powershell DeObfuscation 1% 786 30 hat.time 2 2 April 2021
pas_valide PE x86 - Xor Madness 1% 1144 30 ENOENT 3 17 July 2019
pas_valide ELF x86 - CrackPass 2% 5933 30 Tosh 5 3 February 2011
pas_valide GB - Basic GameBoy crackme 1% 1591 30 jambon69 2 14 September 2018
pas_valide ELF x86 - Random Crackme 1% 3929 30 kmkz 3 3 February 2011
pas_valide ELF x86 - ExploitMe 2% 4933 30 kmkz 5 3 February 2011
pas_valide ELF ARM - crackme 1337 1% 2816 30 2 3 February 2011
pas_valide PE x86 - SEHVEH 1% 1465 35 Thanat0s 1 4 May 2013
pas_valide NRO ARM - Switch homebrew 1% 229 35 Elf 0 21 July 2023
pas_valide EVM - Bytecode 1% 171 35 Elf 0 14 March 2025
pas_valide Godot - 3D model 1% 691 35 Elf 1 10 June 2022
pas_valide ELF ARM - Crypted 1% 764 35 koma 2 4 September 2012
pas_valide ELF x64 - Crackme automating 1% 1379 35 0xmitsurugi 7 14 August 2018
pas_valide APK - Anti-debug 1% 3072 40 cryptax 3 18 December 2012
pas_valide APK - Insomni’Droid 1% 1894 40 cryptax 1 4 March 2012
pas_valide ELF x64 - Rust backdoor 1% 333 40 Elf 0 21 July 2023
pas_valide ELF x64 - Rust Crackme 1% 336 40 extiop 1 17 October 2022
pas_valide PE x64 - UEFI Secure Boot 1% 285 40 Solden 1 10 May 2023
pas_valide PE x86 - AutoPE 1% 969 45 Gr4ph0s 3 5 August 2011
pas_valide PYC - Snakeygen 1% 305 45 erk3 0 17 October 2022
pas_valide PYC - Self Modifying (Byte)Code 1% 244 45 Njörd 1 28 December 2023
pas_valide APK - Root My Droid 1% 1370 45 koma 1 26 February 2012
pas_valide PE x64 - Tables in shambles 1% 229 45 0xTRIKKSS 0 28 December 2023
pas_valide PE DotNet - KeygenMe 1% 384 45 nqnt 1 14 April 2021
pas_valide ELF x86 - Anti-debug 1% 2129 45 Tosh 4 3 June 2012
pas_valide ELF x64 - Nanomites - Introduction 1% 983 45 Phenol 4 4 March 2018
pas_valide WASM - Find the NPC 1% 372 50 Cyxo 3 26 March 2021
pas_valide HackerMan 1% 156 50 LordRoke , Stealer , Sengengie 1 10 May 2023
pas_valide Unity - Mono - Basic Game Hacking 1% 206 50 0x0ff 1 17 October 2022
pas_valide ELF x86 - KeygenMe 1% 1075 50 int_0x80 5 20 July 2011
pas_valide PE DotNet - Memory Protect 1% 112 55 Vozec 0 14 March 2025
pas_valide Bash - VM 1% 474 60 govlog 2 25 March 2021
pas_valide ELF x64 - KeyGenMe 1% 298 60 rene-d 1 12 November 2020
pas_valide ELF x64 - Anti-debug and equations 1% 547 65 0xmitsurugi 4 18 July 2016
pas_valide Unity - IL2CPP - Basic Game Hacking 1% 113 65 0x0ff 0 21 July 2023
pas_valide ELF x64 - Nanomites 1% 565 70 Phenol 2 4 March 2018
pas_valide ELF x86 - Packed 1% 553 70 Tosh 3 18 October 2011
pas_valide PE x86 - RunPE 1% 1197 75 Thanat0s 5 16 December 2013
pas_valide PE32+ - KeygenMe 1% 99 85 Redouane 0 14 March 2025
pas_valide ELF x86 - VM 1% 766 90 Thanat0s 7 16 June 2013
pas_valide ELF x64 - Hidden Control Flow 1% 280 100 so3 1 18 November 2020
pas_valide Ringgit 1% 180 110 Cryptanalyse 2 6 October 2019
pas_valide Voracious Nanomites 1% 67 110 Kasen 0 21 July 2023
pas_valide White-Box Cryptography #2 1% 155 130 Cryptanalyse 1 17 July 2019

Challenge Results Challenge Results

Pseudo Challenge Lang Date
chilipaper Cracking  PE x86 - RunPE en 7 September 2026 at 08:22
cbibi Cracking  ELF x64 - KeyGenMe fr 7 September 2026 at 07:52
zero_finder Cracking  NRO ARM - Switch homebrew fr 7 September 2026 at 07:34
korah Cracking  Godot - Bytecode fr 7 September 2026 at 00:37
c5g Cracking  PE DotNet - KeygenMe fr 6 September 2026 at 22:34
ruba Cracking  WASM - Introduction fr 6 September 2026 at 22:15
ruba Cracking  Godot - Bytecode fr 6 September 2026 at 21:10
voidbat Cracking  ELF x64 - Nanomites - Introduction fr 6 September 2026 at 21:04
korah Cracking  ELF x86 - Ptrace fr 6 September 2026 at 18:37
Tanlotus Cracking  ELF x86 - 0 protection fr 6 September 2026 at 18:32