reverseProeasy

task4

spbctf

Task: 32-bit ELF binary reads integer and calls it as function pointer. Solution: Find printflag address (0x0804867f = 134514303), enter it to trigger flag generation via modulo-indexed function table.

$ ls tags/ techniques/

modular_arithmetic function_pointer x86 not_stripped elf32 function_table scanf_to_call

static_analysisdisassemblyfunction_pointer_hijackmodulo_computation

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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