Running via qi skips the seek

[ror6ax]

Environment

Mon Oct 14 08:53:53 PM CEST 2024
radare2 5.9.4 0 @ linux-x86-64
birth: git.5.9.4 2024-08-12__00:00:00
options: gpl release -O1 cs:5 cl:2 meson
Linux x86_64

Description

Running the same commands as a script somehow omits the seek command.

Test

I've created a script file with following contents:

aaaa;
s main;
drr;

Running it via r2 -qi script /bin/ls . Here's the output of the run:

WARN: Relocs has not been applied. Please use `-e bin.relocs.apply=true` or `-e bin.cache=true` next time
INFO: Analyze all flags starting with sym. and entry0 (aa)
INFO: Analyze imports (af@@@i)
INFO: Analyze entrypoint (af@ entry0)
INFO: Analyze symbols (af@@@s)
INFO: Analyze all functions arguments/locals (afva@@@F)
INFO: Analyze function calls (aac)
INFO: Analyze len bytes of instructions for references (aar)
INFO: Finding and parsing C++ vtables (avrr)
INFO: Analyzing methods (af @@ method.*)
INFO: Recovering local variables (afva@@@F)
INFO: Type matching analysis for all functions (aaft)
INFO: Propagate noreturn information (aanr)
INFO: Scanning for strings constructed in code (/azs)
INFO: Finding function preludes (aap)
INFO: Enable anal.types.constraint for experimental type propagation
role reg    value refstr
――――――――――――――――――――――――
SN   rax    0x0   0 R 0x10102464c457f
     rbx    0x0   0 R 0x10102464c457f
A3   rcx    0x0   0 R 0x10102464c457f
A2   rdx    0x0   0 R 0x10102464c457f
A1   rsi    0x0   0 R 0x10102464c457f
A0   rdi    0x0   0 R 0x10102464c457f
A4   r8     0x0   0 R 0x10102464c457f
A5   r9     0x0   0 R 0x10102464c457f
A6   r10    0x0   0 R 0x10102464c457f
A7   r11    0x0   0 R 0x10102464c457f
     r12    0x0   0 R 0x10102464c457f
     r13    0x0   0 R 0x10102464c457f
     r14    0x0   0 R 0x10102464c457f
     r15    0x0   0 R 0x10102464c457f
PC   rip    0x0   0 R 0x10102464c457f
BP   rbp    0x0   0 R 0x10102464c457f
     rflags 0x0   0 R 0x10102464c457f
     riz    0x0   0 R 0x10102464c457f
SP   rsp    0x0   0 R 0x10102464c457f

Comare the drr output when I have typed all the commands in interactive mode one by one:

SN   rax    0x0    0 R 0x10102464c457f
     rbx    0x0    0 R 0x10102464c457f
A3   rcx    0x0    0 R 0x10102464c457f
A2   rdx    0x0    0 R 0x10102464c457f
A1   rsi    0x0    0 R 0x10102464c457f
A0   rdi    0x0    0 R 0x10102464c457f
A4   r8     0x0    0 R 0x10102464c457f
A5   r9     0x0    0 R 0x10102464c457f
A6   r10    0x0    0 R 0x10102464c457f
A7   r11    0x0    0 R 0x10102464c457f
     r12    0x0    0 R 0x10102464c457f
     r13    0x0    0 R 0x10102464c457f
     r14    0x0    0 R 0x10102464c457f
     r15    0x0    0 R 0x10102464c457f
PC   rip    0x5ef0 24304 .text entry0,_start,rip entry0 R X 'endbr64'
BP   rbp    0x0    0 R 0x10102464c457f
     rflags 0x0    0 R 0x10102464c457f
     riz    0x0    0 R 0x10102464c457f
SP   rsp    0x0    0 R 0x10102464c457f

[trufae]

Seek doesnt' change the program counter. what is happening here is that when you run commands in the shell r2 runs internally the .dr* command which loads the flags associated with the register values.

If you want to change the program counter use the dr PC=main command instead. you can later do sr PC to seek there

But apart from that what is what you are trying to achieve here? Also, can you try with latest release?

[ror6ax]

But apart from that what is what you are trying to achieve here? Also, can you try with latest release?

I am trying to create repeatable environment so that I don't have to re-type same commands over and over. Is this fundamentally not compatible with the mode of operation in r2?