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% 33258 5 g0uZ 10 7 October 2006
pas_valide PE x86 - 0 protection 6% 14293 5 alejandr0 6 11 November 2012
pas_valide ELF C++ - 0 protection 3% 7170 10 sourcePerrier 4 13 July 2016
pas_valide PE DotNet - 0 protection 4% 7482 10 Geluchat 5 15 September 2014
pas_valide ELF x86 - Basic 12% 26842 5 g0uZ 10 7 October 2006
pas_valide ELF ARM - Basic Crackme 2% 2946 20 0xmitsurugi 7 13 July 2016
pas_valide PYC - ByteCode 2% 4101 20 Thanat0s 9 3 July 2013
pas_valide PE DotNet - Basic Crackme 1% 375 20 nqnt 2 14 April 2021
pas_valide ELF x64 - Basic KeygenMe 1% 638 20 fr0g 3 2 September 2020
pas_valide PE DotNet - Basic Anti-Debug 1% 519 20 nqnt 2 24 March 2021
pas_valide WASM - Introduction 1% 407 15 Cyxo 1 26 March 2021
pas_valide ELF x86 - Ptrace 3% 5976 15 g0uZ 3 27 November 2009
pas_valide ELF x86 - Fake Instructions 3% 6833 15 kmkz 5 21 February 2010
pas_valide ELF x64 - Golang basic 1% 1794 15 jenaye 3 8 November 2018
pas_valide ELF MIPS - Basic Crackme 2% 2518 15 sar 2 9 July 2018
pas_valide ELF x64 - Crackme automating 1% 735 35 0xmitsurugi 7 14 August 2018
pas_valide WASM - Find the NPC 1% 91 50 Cyxo 0 26 March 2021
pas_valide ELF x86 - KeygenMe 1% 669 50 int_0x80 5 20 July 2011
pas_valide PE x86 - AutoPE 1% 655 45 Gr4ph0s 3 5 August 2011
pas_valide PE DotNet - KeygenMe 1% 94 45 nqnt 1 14 April 2021
pas_valide ELF x86 - Anti-debug 1% 1406 45 Tosh 3 3 June 2012
pas_valide ELF x64 - Nanomites - Introduction 1% 487 45 Phenol 2 4 March 2018
pas_valide APK - Anti-debug 1% 1873 40 cryptax 3 18 December 2012
pas_valide Powershell DeObfuscation 1% 180 35 hat.time 1 2 April 2021
pas_valide PE x86 - SEHVEH 1% 954 35 Thanat0s 1 4 May 2013
pas_valide PDF - Javascript 1% 1244 30 koma 1 14 February 2012
pas_valide ELF ARM - Crypted 1% 508 35 koma 2 4 September 2012
pas_valide GB - Basic GameBoy crackme 1% 847 30 jambon69 2 14 September 2018
pas_valide ELF x86 - Random Crackme 2% 2739 30 kmkz 3 3 February 2011
pas_valide ELF x86 - ExploitMe 2% 3454 30 kmkz 5 3 February 2011
pas_valide ELF x86 - CrackPass 2% 3944 30 Tosh 5 3 February 2011
pas_valide ELF ARM - crackme 1337 1% 1806 30 Anonymous 2 3 February 2011
pas_valide MachO x64 - keygenme or not 1% 1171 25 /bin/ls 2 14 April 2017
pas_valide Lua - Bytecode 1% 265 25 Bernstein 1 25 March 2021
pas_valide ELF x86 - No software breakpoints 2% 3134 25 yodzeb 8 2 October 2013
pas_valide PE x86 - Xor Madness 1% 502 30 ENOENT 3 17 July 2019
pas_valide PE x86 - RunPE 1% 757 75 Thanat0s 5 16 December 2013
pas_valide ELF x64 - Hidden Control Flow 1% 55 100 so3 1 18 November 2020
pas_valide ELF x86 - VM 1% 493 90 Thanat0s 7 16 June 2013
pas_valide Bash - VM 1% 133 60 govlog 1 25 March 2021
pas_valide ELF x86 - Packed 1% 350 70 Tosh 3 18 October 2011
pas_valide ELF x64 - Nanomites 1% 271 70 Phenol 2 4 March 2018
pas_valide ELF x64 - Anti-debug and equations 1% 315 65 0xmitsurugi 3 18 July 2016
pas_valide ELF x64 - KeyGenMe 1% 73 60 rene-d 0 12 November 2020
pas_valide Ringgit 1% 56 110 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
Emilien   ELF x86 - 0 protection 9 December 2021 at 12:15
R4ichu   PE DotNet - Basic Crackme 9 December 2021 at 11:58
R4ichu   PE DotNet - Basic Anti-Debug 9 December 2021 at 10:53
R4ichu   ELF ARM - crackme 1337 9 December 2021 at 10:20
R4ichu   MachO x64 - keygenme or not 9 December 2021 at 09:51
adwa   PE x86 - 0 protection 9 December 2021 at 08:07
BugHunters   ELF x86 - CrackPass 9 December 2021 at 05:07
BugHunters   ELF x86 - Fake Instructions 9 December 2021 at 05:06
Евгений Романович Лопухов   ELF x86 - 0 protection 9 December 2021 at 04:00
HOM3S   PE DotNet - Basic Anti-Debug 9 December 2021 at 00:25