reverseeasy

spbctf_4_x86_64

spbctf

Task: ELF64 binary validates input digits as swap indices to sort an array, then XOR-decrypts the flag. Solution: BFS to find valid swap sequence that sorts [8,7,5,4,1,3,2,6,9,10] into [1..10].

$ ls tags/ techniques/
elf64xor_decryptionx86_64not_strippedconstraint_solvingsortingbubble_sortswap_sequence
xor_decryptionstatic_analysisdisassemblyconstraint_solvingsorting_algorithm_analysis
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