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.

 46 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% 33704 5 g0uZ 10 7 October 2006
pas_valide ELF x86 - Basic 12% 27206 5 g0uZ 10 7 October 2006
pas_valide PE x86 - 0 protection 6% 14530 5 alejandr0 6 11 November 2012
pas_valide ELF C++ - 0 protection 3% 7296 10 sourcePerrier 4 13 July 2016
pas_valide PE DotNet - 0 protection 4% 7621 10 Geluchat 5 15 September 2014
pas_valide ELF MIPS - Basic Crackme 2% 2587 15 sar 2 9 July 2018
pas_valide ELF x64 - Golang basic 1% 1836 15 jenaye 3 8 November 2018
pas_valide ELF x86 - Fake Instructions 3% 6912 15 kmkz 5 21 February 2010
pas_valide ELF x86 - Ptrace 3% 6042 15 g0uZ 3 27 November 2009
pas_valide WASM - Introduction 1% 458 15 Cyxo 1 26 March 2021
pas_valide ELF ARM - Basic Crackme 2% 3004 20 0xmitsurugi 7 13 July 2016
pas_valide ELF x64 - Basic KeygenMe 1% 683 20 fr0g 3 2 September 2020
pas_valide PE DotNet - Basic Anti-Debug 1% 585 20 nqnt 2 24 March 2021
pas_valide PE DotNet - Basic Crackme 1% 428 20 nqnt 2 14 April 2021
pas_valide PYC - ByteCode 2% 4150 20 Thanat0s 9 3 July 2013
pas_valide ELF x86 - No software breakpoints 2% 3167 25 yodzeb 8 2 October 2013
pas_valide Lua - Bytecode 1% 287 25 Bernstein 1 25 March 2021
pas_valide MachO x64 - keygenme or not 1% 1184 25 /bin/ls 2 14 April 2017
pas_valide ELF ARM - crackme 1337 1% 1826 30 Anonymous 2 3 February 2011
pas_valide ELF x86 - CrackPass 2% 3998 30 Tosh 5 3 February 2011
pas_valide ELF x86 - ExploitMe 2% 3489 30 kmkz 5 3 February 2011
pas_valide ELF x86 - Random Crackme 2% 2775 30 kmkz 3 3 February 2011
pas_valide GB - Basic GameBoy crackme 1% 867 30 jambon69 2 14 September 2018
pas_valide PDF - Javascript 1% 1255 30 koma 1 14 February 2012
pas_valide PE x86 - Xor Madness 1% 513 30 ENOENT 3 17 July 2019
pas_valide ELF ARM - Crypted 1% 512 35 koma 2 4 September 2012
pas_valide ELF x64 - Crackme automating 1% 751 35 0xmitsurugi 7 14 August 2018
pas_valide PE x86 - SEHVEH 1% 961 35 Thanat0s 1 4 May 2013
pas_valide Powershell DeObfuscation 1% 192 35 hat.time 1 2 April 2021
pas_valide APK - Anti-debug 1% 1901 40 cryptax 3 18 December 2012
pas_valide ELF x64 - Nanomites - Introduction 1% 495 45 Phenol 2 4 March 2018
pas_valide ELF x86 - Anti-debug 1% 1421 45 Tosh 3 3 June 2012
pas_valide PE DotNet - KeygenMe 1% 104 45 nqnt 1 14 April 2021
pas_valide PE x86 - AutoPE 1% 664 45 Gr4ph0s 3 5 August 2011
pas_valide ELF x86 - KeygenMe 1% 680 50 int_0x80 5 20 July 2011
pas_valide WASM - Find the NPC 1% 96 50 Cyxo 0 26 March 2021
pas_valide Bash - VM 1% 139 60 govlog 1 25 March 2021
pas_valide ELF x64 - KeyGenMe 1% 80 60 rene-d 0 12 November 2020
pas_valide ELF x64 - Anti-debug and equations 1% 316 65 0xmitsurugi 3 18 July 2016
pas_valide ELF x64 - Nanomites 1% 274 70 Phenol 2 4 March 2018
pas_valide ELF x86 - Packed 1% 350 70 Tosh 3 18 October 2011
pas_valide PE x86 - RunPE 1% 762 75 Thanat0s 5 16 December 2013
pas_valide ELF x86 - VM 1% 494 90 Thanat0s 7 16 June 2013
pas_valide ELF x64 - Hidden Control Flow 1% 58 100 so3 1 18 November 2020
pas_valide Ringgit 1% 57 110 Cryptanalyse 1 6 October 2019
pas_valide White-Box Cryptography #2 1% 36 130 Cryptanalyse 1 17 July 2019

Challenge Results Challenge Results

Pseudo Challenge Lang Date
Redouane   White-Box Cryptography #2 21 January 2022 at 17:22
Joël, hahaha, Joël ?   ELF x86 - Anti-debug 21 January 2022 at 17:21
Amine Ismail   PE x86 - 0 protection 21 January 2022 at 16:45
Amine Ismail   ELF x86 - Basique 21 January 2022 at 16:40
Amine Ismail   ELF x86 - 0 protection 21 January 2022 at 16:38
mistermax   ELF ARM - Basic Crackme 21 January 2022 at 16:35
C1ph3r   PDF - Javascript 21 January 2022 at 16:16
RootCAM   ELF x86 - Basique 21 January 2022 at 15:44
RootCAM   ELF x86 - 0 protection 21 January 2022 at 15:38
dorianbdev   PE x86 - 0 protection 21 January 2022 at 14:49