From db31455d26aebb8f31994a577b014e6933c8ab25 Mon Sep 17 00:00:00 2001
From: h7x4 <h7x4@nani.wtf>
Date: Wed, 1 Jul 2026 23:21:26 +0900
Subject: [PATCH] rev/bit_o_asm4

---
 rev/bit_o_asm4/disassembler-dump0_d.txt | 14 ++++++++++++++
 rev/bit_o_asm4/solve.sh                 |  9 +++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 rev/bit_o_asm4/disassembler-dump0_d.txt
 create mode 100755 rev/bit_o_asm4/solve.sh

diff --git a/rev/bit_o_asm4/disassembler-dump0_d.txt b/rev/bit_o_asm4/disassembler-dump0_d.txt
new file mode 100644
index 0000000..8c810be
--- /dev/null
+++ b/rev/bit_o_asm4/disassembler-dump0_d.txt
@@ -0,0 +1,14 @@
+<+0>:     endbr64 
+<+4>:     push   rbp
+<+5>:     mov    rbp,rsp
+<+8>:     mov    DWORD PTR [rbp-0x14],edi
+<+11>:    mov    QWORD PTR [rbp-0x20],rsi
+<+15>:    mov    DWORD PTR [rbp-0x4],0x9fe1a
+<+22>:    cmp    DWORD PTR [rbp-0x4],0x2710
+<+29>:    jle    0x55555555514e <main+37>
+<+31>:    sub    DWORD PTR [rbp-0x4],0x65
+<+35>:    jmp    0x555555555152 <main+41>
+<+37>:    add    DWORD PTR [rbp-0x4],0x65
+<+41>:    mov    eax,DWORD PTR [rbp-0x4]
+<+44>:    pop    rbp
+<+45>:    ret
diff --git a/rev/bit_o_asm4/solve.sh b/rev/bit_o_asm4/solve.sh
new file mode 100755
index 0000000..f70667d
--- /dev/null
+++ b/rev/bit_o_asm4/solve.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+RBP_0X4="$((16#9fe1a))"
+
+if [ "$RBP_0X4" -le "$((16#2710))" ]; then
+  echo "picoCTF{$(("$RBP_0X4" + 16#65))}"
+else
+  echo "picoCTF{$(("$RBP_0X4" - 16#65))}"
+fi