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.

 38 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide ELF x86 - 0 protection 15% 28796 5 g0uZ 10
pas_valide ELF x86 - Basic 12% 23336 5 g0uZ 10
pas_valide PE x86 - 0 protection 7% 12355 5 alejandr0 5
pas_valide ELF C++ - 0 protection 3% 5933 10 sourcePerrier 4
pas_valide PE DotNet - 0 protection 4% 6434 10 Geluchat 5
pas_valide ELF MIPS - Basic Crackme 1% 1824 15 s4r 2
pas_valide ELF x64 - Golang basic 1% 1345 15 jenaye 3
pas_valide ELF x86 - Fake Instructions 4% 6087 15 kmkz 5
pas_valide ELF x86 - Ptrace 3% 5311 15 g0uZ 3
pas_valide ELF ARM - Basic Crackme 2% 2476 20 0xmitsurugi 7
pas_valide ELF x64 - Basic KeygenMe 1% 217 20 fr0g 3
pas_valide PYC - ByteCode 2% 3666 20 Thanat0s 9
pas_valide ELF x86 - No software breakpoints 2% 2859 25 yodzeb 8
pas_valide MachO x64 - keygenme or not 1% 1042 25 /bin/ls 1
pas_valide ELF ARM - crackme 1337 1% 1604 30 2
pas_valide ELF x86 - CrackPass 2% 3486 30 Tosh 5
pas_valide ELF x86 - ExploitMe 2% 3114 30 kmkz 5
pas_valide ELF x86 - Random Crackme 2% 2447 30 kmkz 3
pas_valide GB - Basic GameBoy crackme 1% 666 30 jambon69 2
pas_valide PDF - Javascript 1% 1115 30 koma 1
pas_valide PE x86 - Xor Madness 1% 378 30 ENOENT 2
pas_valide ELF ARM - Crypted 1% 465 35 koma 2
pas_valide ELF x64 - Crackme automating 1% 575 35 0xmitsurugi 6
pas_valide PE x86 - SEHVEH 1% 847 35 Thanat0s 1
pas_valide APK - Anti-debug 1% 1577 40 cryptax 3
pas_valide ELF x64 - Nanomites - Introduction 1% 389 45 Phenol 2
pas_valide ELF x86 - Anti-debug 1% 1245 45 Tosh 3
pas_valide PE x86 - AutoPE 1% 575 45 Gr4ph0s 3
pas_valide ELF x86 - KeygenMe 1% 586 50 int_0x80 5
pas_valide ELF x64 - KeyGenMe 1% 2 60 rene-d 0
pas_valide ELF x64 - Anti-debug and equations 1% 277 65 0xmitsurugi 3
pas_valide ELF x64 - Nanomites 1% 219 70 Phenol 2
pas_valide ELF x86 - Packed 1% 317 70 Tosh 3
pas_valide PE x86 - RunPE 1% 683 75 Thanat0s 5
pas_valide ELF x86 - VM 1% 440 90 Thanat0s 7
pas_valide ELF x64 - Hidden Control Flow 1% 1 100 so3 0
pas_valide Ringgit 1% 32 110 Cryptanalyse 0
pas_valide White-Box Cryptography #2 1% 23 130 Cryptanalyse 1

Challenge Results Challenge Results

Pseudo Challenge Lang date
r00tSIS   APK - Anti-debug 25 November 2020 at 07:03
Erez   ELF x64 - Basic KeygenMe 25 November 2020 at 06:47
Erez   ELF x64 - Golang basic 25 November 2020 at 05:47
Lan Huong   PE DotNet - 0 protection 25 November 2020 at 04:44
r00tSIS   ELF ARM - crackme 1337 25 November 2020 at 04:33
Lan Huong   PE x86 - 0 protection 25 November 2020 at 04:29
Lan Huong   ELF x86 - Basic 25 November 2020 at 04:10
Lan Huong   ELF x86 - 0 protection 25 November 2020 at 04:03
sinister   PE x86 - 0 protection 25 November 2020 at 01:31
sinister   ELF x86 - Basic 25 November 2020 at 00:02