killchain-compendium/exploit/binaries/r2.md

Radare2

Usage

Debug

r2 -d <binary>

• Analyze

aaa

• Show all info

ia

• Search for strings

izz

• Main address

iM

• Entrypoint

ie

• Current memory address

s

• Show address of function or register, respectively

s <func>
sr <reg>

• Show main

pdf @main

• Show main and follwing functions

pd @main

• Breakpoint

db 0xdeadbeef

• Show all breakpoints

dbi

• Show rbp-0x4

px @rbp-0x4

• Continue

dc

• Step

ds

• Show registers

dr

• Restart

ood

Visual Mode

• Enter visual mode via VV
• Enter normal mode inside visual mode via :
• Add comment via ;

Write Mode

• Enter write mode via w
• Write cache list via wc
• Alter/modify opcode at current seek via wA
• Use as follows

s <memoryaddress>
wx <newOpcode>
dc

AT&T Instructions

• leaq src, dst: this instruction sets dst to the address denoted by the expression in src
• addq src, dst: dst = dst + src
• subq src, dst: dst = dst - src
• imulq src, dst: dst = dst * src
• salq src, dst: dst = dst << src
• sarq src, dst: dst = dst >> src
• xorq src, dst: dst = dst XOR src
• andq src, dst: dst = dst & src
• orq src, dst: dst = dst | src